Title of Invention	VEHICLE PROVIDED WITH TRAILER
Abstract	A vehicle provided with a trailer (10) in which a trailer hitch (26) is provided to the rear of the body of the vehicle (12) and the trailer (13) is coupled using the trailer hitch (26) so that the trailer (13) can be detached, characterized in that: passengers can be seated with their backs turned forward by arranging the trailer hitch (26) in front of the axle of a rear wheel (23) on the body side of the vehicle (12), extending a frame of the trailer to a part above the rear wheel (24), providing a floor for the passengers in the trailer (13) to put their feet in the center of the frame and providing front seats for the passengers to sit on the frame in front of the floor (142).

Title of Invention

VEHICLE PROVIDED WITH TRAILER

Abstract

A vehicle provided with a trailer (10) in which a trailer hitch (26) is provided to the rear of the body of the vehicle (12) and the trailer (13) is coupled using the trailer hitch (26) so that the trailer (13) can be detached, characterized in that: passengers can be seated with their backs turned forward by arranging the trailer hitch (26) in front of the axle of a rear wheel (23) on the body side of the vehicle (12), extending a frame of the trailer to a part above the rear wheel (24), providing a floor for the passengers in the trailer (13) to put their feet in the center of the frame and providing front seats for the passengers to sit on the frame in front of the floor (142).

Full Text	FORM 2 THE PATENTS ACT 1970 [39 OF 1970] COMPLETE SPECIFICATION [See Section 10] "VEHICLE PROVIDED WITH TRAILER" HONDA GIKEN KOGYO KABUSHIKI KAISHA, a corporation of Japan, 1-1, Minamiaoyama 2-chome, Minato-ku, Tokyo, Japan The following specification particularly describes the nature of the invention and the manner in which it is to be performed :- The present invention relates to vehicle provided with trailer [Technical Field of the Invention] The present invention relates to a vehicle provided with a trailer in which in case the trailer is used for apassenger car, a function of a small turning circle is enhanced, a center of gravity when passengers are seated is lowered, a driver himself/herself can brake the trailer and in addition, the trailer can be detached from the body of the vehicle. [0002] [Prior Art] For exampl.e, a vehicle provided with a trailer disclosed in Japanese published unexamined patent application No. HeilO-59253, "Traction structure of swing-type three-wheeled vehicle" is known. [0003] In Figs. 1 and 2 in the patent application, traction structure that a coupling member 28 is attached to the rear of a rear frame 24 of a swing-type three-wheeled vehicle 1 (reference numbers described in the patent application are used as they are) and a coupled part 32 provided to the front of a trailer 7 is coupled to the coupling member 28 is shown. The trailer 7 is provided with a main frame 30 and right and left wheels 37, 37 are attached to a lower part of the rear of the main frame 30 via a stay 36. [0004] The structure that an inertia braking system 33 is integrated with the coupled part 32 and in the meantime, the main frame 30 of the trailer 7 is attached to the coupled part 32 so that the main frame can be moved longitudinally of the swing-type three-wheeled vehicle 1 is also shown. In deceleration, the trailer 7 is moved on the side of the swing-type three-wheeled vehicle 1 by inertia force, an operation cable 74 of the inertia braking system 33 operates a drum brake 73 of a wheel 37 and the wheel 37 is braked. [0005] [Problems to be Solved by the Invention] In a case that two seats are arranged right and left and two rows each of which includes the two seats are arranged in front and in the rear to seat passengers on the trailer 7 according to the patent application described above, the whole length of the trailer 7 is increased and a function of a small turning circle of the wing-type three-wheeled vehicle 1 for pulling the trailer 7 is deteriorated. In the case of the structure that passengers are seated on the main frame 3 0 of the trailer 7, a center of gravity on the side of the trailer 7 when the passengers are seated becomes high and is not desirable. [0006] As the inertia braking system 33 is operated by only the inertia force of the trailer 7, the trailer cannot be braked by desired control force and at desired timing of a driver seated on the swing-type three-wheeled vehicle 1. [0007] For means for the driver to brake the wheel 37 of the trailer 7, for example, it is considered that a brake fluid pipe is arranged from the side of the swing-type three wheeled vehicle 1 to the trailer side 7 and a drum brake 73 is operated. If a joint for connecting the side of the swing-type three-wheeled vehicle 1 and the trailer side 7 is provided on the way of the brake fluid pipe, the brake fluid pipe has only to be separated in the joint when the trailer 7 is detached from the swing-type three-wheeled vehicle 1. [0008] However, the end of the joint is required to be covered with a cap and others to prevent the inside face of the joint from being exposed to the outside and being exposed to rainwater and a cloud of dust. When air is mixed in the brake fluid pipe when the joint is coupled again, air bleeding is required and work becomes troublesome. [0009] Then, the object of the invention is to enhance a function of a small turning circle in case a trailer is used to carry passengers and in addition, to lower a center of gravity when the passengers are seated (1) , to enable a driver to arbitrarily brake the trailer (2) respectively by improving the vehicle provided with the trailer described above and to facilitate the separation of a pipe for a brake when the trailer is detached from the body of the vehicle in structure that a brake pipe is crossed from the side of the body of the vehicle to the trailer side. [0010] [Means to Solve the Problems] To achieve the object, Claim 1 is based upon a vehicle provided with a trailer in which a trailer hitch is provided to the rear of the body of the vehicle and the trailer is coupled using the trailer hitch so that the trailer can be detached and is characterized in that passengers can be seated with their backs turned forward by arranging the trailer hitch in front of an axle of a rear wheel on the body side of the vehicle, extending a frame of the trailer to a part above the rear wheel, providing a floor for passengers in the trailer to put their feet in the center of the frame and providing front seats for the passengers to sit to the frame in front of the floor. [0011] The whole length of the trailer can be reduced by extending the frame of the trailer to the part above the rear wheel on the body side of the vehicle and arranging the front seat on the frame above the rear wheel, as a result, the whole length of the vehicle provided with the trailer can be reduced and the function of a small turning circle can be enhanced. When the front seat is attached to the frame above the rear wheel of the trailer and the floor is provided below the seat, the center of gravity on the trailer side when passengers are seated can be lowered and the stability of the vehicle provided with the trailer can be enhanced. [0012] Claim 2 is characterized in that rear seats for passengers to sit are provided to a frame at the back of a floor. The number of passengers who take the trailer can be increased by the front seats and the rear seats. [0013] Claim 3 is based upon a vehicle provided with a trailer in which the trailer is coupled to the rear of the body of the vehicle via a trailer hitch so that the trailer can be detached and is characterized in that a trailer wheel brake for braking a trailer wheel by a driver seated on the body of the vehicle operating is provided to the vehicle, a brake pipe for transmitting the pressure of brake fluid from a part for applying the trailer wheel brake to the trailer wheel side is separated into a pipe on the body side of the vehicle and a pipe on the trailer side halfway, a mechanical force conversion cylinder for once converting the pressure of brake fluid to mechanical force is provided to the end of the pipe on the body side of the vehicle, a master cylinder for housing a second piston that generates the pressure of brake fluid when the second piston is pressed by the end of a first piston provided in the mechanical force conversion cylinder is provided to the end of the pipe on the trailer side and the mechanical force conversion cylinder and the master cylinder are coupled so that they can be detached. [0014] A driver can directly apply the trailer wheel brake by crossing the brake pipe from the body side of the vehicle to the trailer wheel side and the trailer can be braked by desired control force and at desired timing. [0015] As a passage of brake fluid is not exposed to the outside though the first piston and the second piston are exposed to the outside even if the mechanical force conversion cylinder and the master cylinder are separated when the trailer is detached from the body of the vehicle, a cap and others required in the prior art are not required to be used in the invention, compared with the case that the passage of brake fluid in the following divided joints is required to be covered with a cap and others to protect the passage in case a one touch type joint is used, and the mechanical force conversion cylinder and the master cylinder can be simply separated. [0016] [Mode for Carrying Out the Invention] Referring to the attached drawings, embodiments of the invention will be described below. The drawings shall be viewed in a direction of reference numbers. [Brief Description of the Drawings] [Fig. 1] Fig. 1 is a side view showing a vehicle provided with a trailer according to the invention; [Fig. 2] Fig. 2 is a plan showing the vehicle provided with the trailer according to the invention; [Fig. 3] Fig. 3 is a sectional view viewed along a line 3-3 in Fig. 1; [Fig. 4] Fig. 4 is a perspective view showing a body frame according to the invention; [Fig. 5] Fig. 5 is a perspective view showing a trailer frame according to the invention; [Fig. 6] Fig. 6 is a side view showing a main part of the vehicle provided with the trailer according to the invention; [Fig. 7] Fig. 7 is a side view showing a trailer hitch according to the invention; [Fig. 8] Fig. 8 is an exploded perspective view showing the trailer hitch according to the invention; [Fig. 9] Fig. 9 is a plan showing the trailer hitch according to the invention; [Fig. 10] Fig. 10 is a sectional view viewed along a line 10-10 in Fig. 9; [Fig. 11] Fig. 11 is a system diagram showing a braking device of the vehicle provided with the trailer according to the invention; [Fig. 12] Fig. 12 is a sectional view viewed along a line 12-12 in Fig. 9; [Fig. 13] Fig. 13 is a sectional view viewed along a line 13-13 in Fig. 9; [Fig. 14] Fig. 14 is an explanatory drawing for explaining the action of a relay part according to the invention; [Fig. 15] Figs. 15 are explanatory drawings for explaining the action of the relay part and a second housing case according to the invention; and [Fig. 16] Fig. 16 is an explanatory drawing for explaining a state in which the coupling of the trailer hitch is released according to the invention. Fig. 1 is a side view showing a vehicle provided with a trailer according to the invention and the vehicle provided with the trailer 10 is composed of the body of the vehicle 12 in which a driver 11 is seated and the trailer 13 for passengers coupled to the rear of the body of the vehicle 12. [0017] The body of the vehicle 12 is a three-wheeled vehicle in which a front fork 16 and a front wheel 17 are attached to a head pipe 15 provided at the front end of a body frame 14 via a handlebar shaft not shown so that the front fork and the front wheel can be steered, a handlebar 18 is attached to an upper part of the handlebar shaft, a power unit 21 is attached to a lower part of an intermediate part of the body frame 14, a first swing arm 22 is attached to a lower part of the body frame 14 so that the first swing arm can be vertically swung, a rear axle 23 is attached to the rear end of the first swing arm 22 so that the rear axle can be revolved, right and left rear wheels 24, 24 (the rear wheel 24 on the inside is not shown) are attached to the rear axle 23 and a trailer hitch 26 as a coupling device for coupling the trailer 13 is attached to loading space 25 provided to an upper part of the rear of the body frame 14 . [0018] A reference number 30 denotes a front axle as the rotation axis of the front wheel 17, 31 denotes a front fender covering the front wheel 17 over it, 32 denotes a front cover, 33 denotes a wind screen integrated with a roof 34, 35 (a reference number 35 on the inside is not shown) denotes a post supporting the roof 34, 36 (a reference number 36 on the inside is not shown) denotes a grip attached to each post 35, 37 denotes a seat for a driver, 41 (a reference number 41 on the inside is not shown) denotes a rear cushion unit installed between the rear end of the first swing arm 22 and the body frame 14, 42 (a reference number 42 on the inside is not shown) denotes a rear fender covering each rear wheel 24, 43 denotes a first tail lamp, 45 denotes a step for the driver 11 to put his/her foot, 47 denotes a brake pedal, 48 denotes a change pedal, 51 denotes an air cleaner and 52 denotes a carburetor. A cover covering the body frame 14 is omitted. [0019] The trailer 13 is a vehicle in which a floor 62 for passengers 61 to put their feet is provided in the center of a trailer frame 60, front seats 63, 63 (the front seat 63 on the inside is not shown) are attached to the trailer frame 60 above the front of the floor 62, rear seats 64, 64 (the rear seat 64 on the inside is not shown) are attached to the trailer frame 60 above the rear of the floor 62, a second swing arm 65 is attached to a lower part of the trailer frame 60 so that the second swing arm can be vertically swung, a trailer axle 6 6 is attached to the rear end of the second swing arm 65 so that the trailer axle can be revolved and right and left trailer wheels 67, 67 (the trailer wheel 67 on the inside is not shown) are attached to the trailer axle 66. [0020] A reference number 71 denotes a head rest, 72 (the reference number 72 on the inside is not shown) denotes a cushion unit for the trailer installed between the rear end of the second swing arm 65 and the trailer frame 60 and 73 denotes a tail lamp. [0021] Fig. 2 is a plan showing the vehicle provided with the trailer according to the invention and shows a state in which the trailer 13 of the vehicle provided with the trailer 10 is swung left (a direction shown by an arrow (left) the inside of which is blank in Fig. 2) with the position of the trailer hitch 26 in the center. The trailer 13 is similarly swung right (a direction shown by an arrow (right) the inside of which is blank in Fig. 2) though it is not shown in Fig. 2. [0022] A reference number 81 denotes a right brake lever for braking the front wheel 17 of the body of the vehicle 12 and 82 denotes a left brake lever for braking the trailer wheels 67, 67 of the trailer 13. The rear wheels 24, 24 of the body of the vehicle 12 is braked by the brake pedal 47 shown in Fig. 1. [0023] Fig. 3 is a sectional view viewed along a line 3-3 in Fig. 1, a sprocket (not shown) is attached to an output shaft to a transmission of the power unit 21 shown in Fig. 1, a chain 86 is put around the sprocket and a driven sprocket 85 shown in Fig. 3 and a differential gear unit 88 is attached to the driven sprocket 85 via a bracket 87. [0024] The differential gear unit 88 is composed of a case 91, a spindle 92 attached to the case 91, first bevel gears 93, 93 supported by the spindle 92 so that the bevel gear can be revolved and second bevel gears 94, 94 engaged with the first bevel gears 93, 93, a left rear axle shaft 95 and a right rear axle shaft 96 are respectively integrated with the second bevel gears 94, 94, and the left rear axle shaft 95 and the right rear axle shaft 96 are respectively coupled to the rear wheels 24, 24. The left rear axle shaft 95 and the right rear axle shaft 95 are members forming the rear axle 23 shown in Fig. 1. [0025] The case 91 of the differential gear unit 88 is a member to the left side of which a left cylindrical member 97 for housing the left rear axle shaft 95 is attached and to the right side of which a right cylindrical member 98 for housing the right rear axle shaft 96 is attached and drum brake assemblies 103, 103 are respectively attached to the respective ends of the left and right cylindrical members 97, 98. Reference numbers 105 and 106 denote a wheel and a tire respectively forming the rear wheel 24, and 107 and 108 denote a drum and a wheel cylinder respectively provided to a hydraulic drum brake assembly 103. [0026] Fig. 4 is a perspective view showing the body frame according to the invention, the body frame 14 is composed of the head pipe 15, a main frame 112 extended backward and downward from the head pipe 15, a pivot plate 113 attached to a lower part of the rear of the main frame 112, a cross pipe 114 attached to the pivot plate 113, subframes 115, 116 respectively coupled to both ends of the cross pipe 114 by being extended downward and backward from the left and the right of the main frame 112, rear frames 117, 118 respectively curved and extended left and right and backward from a halfway part of the main frame 112, cross beams 123, 124 respectively tying the respective rear of the rear frames 117, 118, a U-type upper frame 125 which is extended backward and upward from both ends of the cross pipe 114 and halfway parts of which are respectively attached to the rear frames 117, 118 and cross subpipes 127, 128 extended left and right and upward from the rear end of the main frame 112 and respectively coupled to the upper frame 125. [0027] A reference number 131 denotes a seat attaching bracket attached to the upper frame 125 via the cross pipe 132 to attach the rear of the seat for a driver 37 shown in Fig. 1, 133 and 134 denote a loading space attaching bracket for attaching the loading space 25 and 135 denotes a post attaching bracket for attaching the post 35. [0028] Fig. 5 is a perspective view showing the trailer frame according to the invention, the trailer frame 60 is composed of a trailer lower frame 144 the center 141 of which is made lower and a front seat attached part 142 and a rear seat attached part 143 of which are made higher, a left pillar 146 and a right pillar 147 attached to the left and right upper parts of the trailer lower frame 144, a front upper cross pipe 148, cross plates 151, 151 and a rear upper cross pipe 152 respectively tying the left pillar 146 and the right pillar 147, front L-type frames 155, 155 respectively extended to the left pillar 146 and the right pillar 147 from left and right parts of the front seat attached part 142 and rear L-type frames 156, 156 respectively extended to the left pillar 146 and the right pillar 147 from left and right parts of the rear seat attached part 143. A reference number 157 denotes a pivot member attached to a front lower cross pipe 158 of the trailer lower frame 144 and the trailer is coupled to the body of the vehicle 12 shown in Fig. 2 via the pivot member 157. [0029] Fig. 6 is a side view showing the main part of the vehicle provided with the trailer according to the invention and shows the trailer hitch 26 , detailedly a pivot shaft 171 of the trailer hitch 26 is arranged forward by distance D from the rear axle 23 of the rear wheel 24 on the body side of the vehicle 12. As described above, in case the trailer hitch 26 is arranged in front of the rear axle 23, a load of the trailer 13 acts between the front wheel 17 shown in Fig. 1 and the rear wheel 24 respectively of the body of the vehicle 12 and a vertical load of the front wheel 17 can be prevented from being reduced. The pivot shaft 171 is a shaft of a pivot pin 177 shown in Fig. 7 described later. [0030] Fig. 6 shows that a passenger can be seated with his/her back turned forward by extending the trailer lower frame 144 of the trailer 13 to a part above the rear wheel 24, providing the floor 62 for the passengers of the trailer 13 to put their feet in the center 141 of the trailer lower frame 144 and providing the front seats 63, 63 (the front seat 63 on the inside is not shown) for the passengers to sit to the front seat attached part 142 in front of the floor 62. Further, the rear seats 64, 64 (the rear seat on the inside is not shown) for the passengers to sit are provided to the rear seat attached part 143 at the back of the floor 62. [0031] Fig. 7 is a side view showing the trailer hitch according to the invention and the trailer hitch 26 is composed of a base 175 attached on the body side of the vehicle 12 shown in Fig. 6, a box part 176 attached to the base 175 so that the box part can be revolved and the pivot member 157 attached to the box part 176 via the pivot pin 177 so that the pivot member can be swung left and right. [0032] Fig. 8 is an exploded perspective view showing the trailer hitch according to the invention and the trailer is coupled to the body of the vehicle by inserting a cylindrical member 183 attached to the end of the pivot member 157 between an upper boss 181 and a lower boss 182 respectively provided to the box part 176 of the trailer hitch 26 as shown by an arrow, inserting the pivot pin 177 into the upper boss 181, the cylindrical member 183 and the lower boss 182 from the side of the upper boss 181 and fixing the pivot pin 177 by a set screw 185 provided to the side of the upper boss 181. [0033] Fig. 9 is a plan showing the trailer hitch according to the invention and shows that the pivot member 157 on the trailer side is coupled to the box part 176 on the body side of the vehicle by the pivot pin 177. The pivot member 157 can be swung left and right until the pivot member hits side walls 196, 196 of the box part 176 and its articulation angle is respectively 6 left and right. [0034] Fig. 10 is a sectional view viewed along a line 10-10 in Fig. 9 and the base 175 of the trailer hitch 26 is composed of a base plate 201 attached to the loading space 25 shown in Fig. 6 and supporting brackets 202, 203 attached to left and right parts of the base plate 201. The box part 176 is formed by extending arms 204 and 205 left and right and the arms 204, 205 are respectively attached to the supporting brackets 202, 203 so that the arm can be revolved. [0035] Detailedly, a cylindrical member 206 is attached to one arm 204, a needle bearing 207 is fitted into the cylindrical member 206, a collar 208 is inserted into the inside of the needle bearing 207 and the collar 208 is attached to the supporting bracket 202 by a bolt 211 and a nut 212. The coupling of the other arm 205 and the supporting bracket 203 is also similar to the side of the arm 204. [0036] A headlining board 215 is attached to the respective upper part of the side walls 196, 196 of the box part 176, a bottom plate 216 is attached to the respective lower parts, the upper boss 181 is attached to an upper part of the headlining board 215 and the lower boss 182 is attached to an upper part of the bottom plate 215. [0037] The pivot pin 177 is composed of a knob 217, a flange 218, a straight part 221 and an annular groove 222 formed in an upper part of the straight part 221, the diameter of the flange 218 is made larger than the outside diameter of the upper boss 181, the pivot pin 177 is prevented from being detached by pressing the set screw 185 shown in Fig. 9 on the annular groove 222 and the straight part 221 is inserted into the cylindrical member 183 of the pivot member 157 shown in Fig. 9. [0038] Fig. 11 is a system diagram showing a braking device of the vehicle provided with the trailer according to the invention and the braking device 230 is composed of a front brake 231 for braking the front wheel 17, a rear brake 232 for braking the rear wheels 24, 24 and a trailer wheel brake 233 for braking the trailer wheels 67, 67. [0039] The front brake 231 is composed of a right brake lever 81 attached to the handlebar 18, a master cylinder for the front wheel 236 that generates the pressure of brake fluid by the operation of the right brake lever 81, a front brake pipe 237 extended from the master cylinder for the front wheel 236 to the side of the front wheel 17 and a drum brake for the front wheel 238 connected to the end of the front brake pipe 237. A reference number 241 denotes a front wheel cylinder for pressing a brake shoe of the drum brake for the front wheel 23 8 on a drum and the front wheel cylinder is connected to the front brake pipe 237. [0040] The rear brake 232 is composed of the brake pedal 47 attached to the body frame 14, a master cylinder for the rear wheel 243 that generates the pressure of brake fluid by the operation of the brake pedal 47, a left rear brake pipe 244 and a right rear brake pipe 245 respectively extended from the master cylinder for the rear wheel 243 to the sides of the left and right rear wheels 24, 24 and drum brakes for the rear wheels 246, 246 connected to the respective ends of the left and right rear brake pipes 244, 245. A reference number 247 denotes a pivot shaft that mainly supports the fluctuation of the brake pedal 47, 248, 248 denote rear wheel cylinders for pressing brake shoes of the drum brakes for the rear wheel 246, 246 on drums and the rear wheel cylinders are connected to the left and right rear brake pipes 244, 245. [0041] The trailer wheel brake 233 is composed of a left brake lever 82 attached to the handlebar 18, a master cylinder for the trailer wheel 253 that generates the pressure of brake fluid by the operation of the left brake lever 82, a brake pipe for the trailer 254 which is extended backward from the master cylinder for the trailer wheel 253 and the side of the end of is branched in two, drum brakes for the trailer wheels 256, 256 connected to the respective ends of the brake pipe for the trailer 254 and a relay part 257 provided in a halfway part of the brake pipe for the trailer 254 and attached to the pivot member 157 of the trailer hitch 26. Reference numbers 258, 258 denote a wheel cylinder on the side of the trailer wheel for pressing brake shoes of the drum brakes for the trailer wheels 256, 256 on the drums and the wheel cylinders on the sides of the trailer wheels are connected to the brake pipe for the trailer 254. [0042] The brake pipe for the trailer 254 is composed of a pipe 262 on the body side of the vehicle on the front side of the relay part 257 and a pipe 263 on the trailer side on the rear side of the relay part 257. The relay part 257 is composed of a first cylinder 265 as a mechanical force conversion cylinder for converting the pressure of brake fluid generated in the master cylinder for the trailer wheel 253 to mechanical force, a second cylinder as a master cylinder for receiving the mechanical force generated in the first cylinder 265 and generating the pressure of brake fluid and a first housing case (not shown, described in detail later) for housing the first cylinder 265 and the second cylinder 266, and the first cylinder 265 and the second cylinder 266 can be detached when the trailer 13 is separated from the body of the vehicle 12. [0043] According to the configuration described above, when the right brake lever 81 is operated, the pressure of brake fluid is generated in the master cylinder for the front wheel 236, is transmitted to the front wheel cylinder 241 of the drum brake for the front wheel 238 via the front brake pipe 237 and can brake the front wheel 17. [0044] When the brake pedal 47 is worked, the pressure of brake fluid is generated in the master cylinder for the rear wheel 243 coupled to the brake pedal 47, is transmitted to the drum brakes for the left and right rear wheels 246, 246 via the left rear brake pipe 244 and the right rear brake pipe 245 and can brake the rear wheels 24, 24. [0045] Further, when the left brake lever 82 is operated, the pressure of brake fluid is generated in the master cylinder for the trailer wheel 253, is transmitted to the wheel cylinders for the trailer wheels 258, 258 of the drum brakes for the trailer wheels 256, 256 via the brake pipe for the trailer 254 and can brake the trailer wheels 67, 67. [0046] Fig. 12 is a sectional view viewed along a line 12-12 in Fig. 9 and shows that a bracket 274 is attached to the pivot member 157 by bolts 272, 272 and nuts 273, 273 and the relay part 257 is attached to the bracket 274 by bolts 275, 275 and nuts 276, 276. [0047] The first housing case 277 forming the relay part 257 is provided with a first housing 281 for housing the first cylinder 265 and a second housing 283 for housing the second cylinder 266. [0048] The first cylinder 265 is composed of a cylinder case 285, a cylinder hole 286 formed in the cylinder case 285, a first piston 287 inserted into the cylinder hole 286 so that the first piston can be moved and a pipe connection 288 communicating with the cylinder hole 286 and connected to the pipe 262 on the body side of the vehicle. Reference numbers 291 and 291 denote a bolt for attaching the first cylinder 265 to the first housing case 277, 292 and 292 denote 0 ring and 293 denotes a cup seal for holding the pressure of brake fluid. The first piston 287 is composed of a main piston 294 and a deputy piston 295 adjacent to the main piston 294. [0049] The second cylinder 266 is composed of a cylinder case 297, a cylinder hole 298 formed in the cylinder case 297, a second piston 301 inserted into the cylinder hole 298 so that the second piston can be moved, a spring 302 for pressing the second piston 301 on the side of the first cylinder 265, a connection to a pipe on the trailer side 3 03 communicating with the back side of the second piston 301 in the cylinder hole 298 (that is, the side on which the spring 302 is arranged of the cylinder hole 298) and connected to the pipe on the trailer side 263 and a stopper member 304 for preventing the second piston 301 from being detached on the side of the first cylinder 265. A reference number 306 denotes a seal member attached to the main piston 294 to protect the respective contact parts of the main piston 294 and the second piston 301, and 307 and 307 denote an installation hole provided to the cylinder case 297 to attach the second cylinder 266 to the first housing case 277. [0050] Next, the action of the relay part 257 will be described. When the pressure of brake fluid acts in the cylinder hole 286 of the first cylinder 265, the deputy piston 295 hits the wall of the first housing case 277 and is still, however, the main piston 294 moves right and presses the second piston 301 of the second cylinder 266 right. That is, in the first cylinder 265, the pressure of brake fluid is converted to mechanical force. [0051] As a result, the second piston 301 is moved right against the elasticity of a spring 302. Hereby, in a brake fluid passage 318 filled with brake fluid and adjacent to the second piston 301, the pressure of brake fluid is generated and is transmitted to the drum brakes for the trailer wheels 256, 256 via the pipe on the trailer side 263 shown in Fig. 11. [0052] Fig. 13 is a sectional view viewed along a line 13-13 in Fig. 9 and shows that a second housing case 311 for temporarily housing the first cylinder 265 shown in Fig. 12 housed in the relay part 257 shown in Fig. 12 when the trailer 13 shown in Fig. 6 is detached from the body of the vehicle 12 shown in Fig. 6 is attached to an upper part of the box part 176 of the trailer hitch 26 shown in Fig. 9 by bolts 313, 313 and nuts 314, 314 via collars 312, 312. A reference number 315 denotes a stopper member for preventing the first piston 287 shown in Fig. 12 from being detached after the first cylinder 265 is housed. [0053] The action of the relay part 257 described above will be described below. Fig. 14 is an explanatory drawing for explaining the action of the relay part according to the invention. First, the bolts 291, 291 shown in Fig. 12 are loosened and the first cylinder 265 is detached from the first housing case 277 as shown in Fig. 14. The first cylinder 265 is housed in the second housing case 311. [0054] Figs . 15A and 15B are explanatory drawings for explaining the action of the relay part and the second housing case according to the invention. Fig. 15A shows that the first cylinder 265 housed in the second housing case 311 is attached to the second housing case 311 by bolts 318, 318. The first piston 287 of the first cylinder 265 , detailedly the end of the main piston 294 is made opposite to the end of the stopper member 315 and the seal member 306 covers the stopper member 315. [0055] Fig. 15B shows the inside of the first housing case 277 from which the first cylinder 265 shown in Fig. 15A is detached. As the brake fluid passage 318 coupled to the pipe on the trailer side 263 shown in Fig. 11 is not exposed to the outside though the second piston 301 of the second cylinder 266 is exposed to the outside, the brake fluid passage 318 is not exposed to rainwater and dust. [0056] Fig. 16 is an explanatory drawing for explaining a state in which the coupling of the trailer hitch is released according to the invention and after the first cylinder 265 is detached from the first housing case 277 and is housed in the second housing case 311, the coupling of the trailer hitch 26 is released as shown by an arrow. As described above, the separation of the relay part 257 shown in Fig. 12 caused by the release of the coupling of the trailer hitch 26 can be easily performed and the operationability can be enhanced. [0057] As described referring to the drawings above, the invention is first characterized in that in the vehicle provided with the trailer 10 in which the trailer hitch 26 is provided to the rear of the body of the vehicle 12 and the trailer 13 is coupled using the trailer hitch 26 so that the trailer can be detached, passengers can be seated with their backs turned forward by arranging the trailer hitch 26 in front of the axle of the rear wheel 24 on the body side of the vehicle 12, that is, the rear axle 23, extending the trailer lower frame 144 of the trailer 13 to the part above the rear wheel 24, providing the floor 62 for the passengers in the trailer 13 to put their feet in the center of the trailer lower frame 144 and providing the front seats 63 for the passengers to sit to the frame in front of the floor 62, that is, the front seat attached part 142. [0058] The whole length of the trailer 13 can be reduced by extending the trailer lower frame 144 of the trailer 13 to the part above the rear wheel 24 on the body side of the vehicle 12 and arranging the front seat 63 in front seat attached part 142 above the rear wheel 24, as a result, the whole length of the vehicle provided with the trailer 10 can be reduced and the function of a small turning circle can be enhanced. [0059] Also, as the front seat 63 is attached to the trailer lower frame 144 of the trailer 13 above the rear wheel 24 and the floor is provided below the front seat 63, the center of gravity on the trailer side 13 when passengers are seated can be lowered and the stability of the vehicle provided with the trailer 10 can be enhanced. [0060] Further, space above the rear wheel 24 can be effectively utilized by arranging the front seat 63 provided to the front of the trailer lower frame 144 of the trailer 13 above the rear wheel 24 on the body side of the vehicle 12. [0061] The invention is second characterized in that the rear seats 64 for passengers to sit are provided to the frame at the back of the floor, that is, the rear seat attached part 143. The number of passengers in the trailer 13 can be increased by the front seats 63 and the rear seats 64. [0062] The invention is third characterized in that in the vehicle provided with the trailer 10 in which the trailer 13 is coupled to the rear of the body of the vehicle 12 via the trailer hitch 26 so that the trailer can be detached, the trailer wheel brake 233 that brakes the trailer wheel 67 when a driver seated on the body of the vehicle 12 applies it is provided to the vehicle 10, the brake pipe 254 for the trailer for transmitting the pressure of brake fluid from the left brake lever 82 of the trailer wheel brake 233 to the trailer wheel side 67 is separated into the pipe on the body side of the vehicle 262 and the pipe on the trailer side 263 halfway, the first cylinder 265 for once converting the pressure of the brake fluid to mechanical force is provided to the end of the pipe on the body side of the vehicle 262 , the second cylinder 266 for housing the second piston 301 that generates the pressure of the fluid when the second piston is pressed by the end of the first piston 287 provided in the first cylinder 265 is provided to the end of the pipe on the trailer side 263 and the first piston 287 and the second piston 301 are coupled so that they can be detached. [0063] As the brake pipe for the trailer 254 is crossed from the body side of the vehicle 12 to the trailer wheel side 67, a driver can directly apply the trailer wheel brake 233 and the trailer 13 can be braked by desired control force and at desired timing. [0064] Also, as the passage of brake fluid is not exposed to the outside though the first piston 287 and the second piston 301 are exposed to the outside even if the first cylinder 265 and the second cylinder 266 are separated when the trailer 13 is detached from the body of the vehicle 12, the cap and others are not required to be used in the invention, compared with the case that the divided joints are required to be covered with the cap and others to protect the passage of the brake fluid of the divided joints in case the one touch type joint is used for example and the first cylinder 265 and the second cylinder 266 can be simply separated. [0065] [Effect of the Invention] The invention produces the following effect owing to the configuration described above. Passengers can be seated with their backs turned forward by arranging the trailer hitch in front of the axle of the rear wheel on the body side of the vehicle, extending the frame of the trailer to the part above the rear wheel, providing the floor for passengers in the trailer to put their feet in the center of the frame and providing the front seats for the passengers to sit to the frame in front of the floor in the vehicle provided with the trailer according to Claim 1, the whole length of the trailer can be reduced by extending the frame of the trailer to the part above the rear wheel on the body side of the vehicle and arranging the front seat on the frame above the rear wheel, as a result, the whole length of the vehicle provided with the trailer can be reduced and the function of a small turning circle can be enhanced. [0066] Also, when the front seats are attached to the frame of the trailer above the rear wheels and the floor is provided below the seats, the center of gravity on the trailer side when passengers are seated can be lowered and the stability of the vehicle provided with the trailer can be enhanced. [0067] As the vehicle provided with the trailer according to Claim 2 is provided with the rear seats for passengers to sit to the frame at the back of the floor, the number of passengers in the trailer can be increased by the front seats and the rear seats. [0068] As the vehicle provided with the trailer according to Claim 3 is provided with the trailer wheel brake that brakes the trailer wheel when a driver seated on the body of the vehicle applies it, the braKe pipe for transmitting the pressure of brake fluid from the part for applying the trailer wheel brake to the trailer wheel side is separated into the pipe on the body side of the vehicle and the pipe on the trailer side halfway, the mechanical force conversion cylinder for once converting the pressure of the brake fluid to mechanical force is provided to the end of the pipe on the body side of the vehicle, the master cylinder for housing the second piston that generates the pressure of the brake fluid when the second piston is pressed by the end of the first piston provided to the mechanical force conversion cylinder is provided to the end of the pipe on the trailer side and the mechanical force conversion cylinder and the master cylinder are coupled so that they can be detached, the driver can directly apply the trailer wheel brake by crossing the brake pipe from the body side of the vehicle to the trailer wheel side and the trailer can be braked at desired control force and at desired timing. [0 069] Also, as the passage of brake fluid is not exposed to the outside though the first piston and the second piston are exposed to the outside even if the mechanical force conversion cylinder and the master cylinder are separated when the trailer is detached from the body of the vehicle, the cap and others are not required to be used in the invention, compared with the case that the passages of the brake fluid of the divided joints are required to be covered with the cap and others to protect the passages of the brake fluid in the divided joints in case the one touch type joint is used for example and the mechanical force conversion cylinder and the master cylinder can be simply separated. (Description of Reference Numbers] 10 Vehicle provided with trailer, 12 Body of vehicle, 13 Trailer, 23 Axle (Rear axle), 24 Rear wheel, 26 Trailer hitch, 62 Floor, 63 Front seat, 64 Rear seat, 67 Trailer wheel, 82 Part for applying trailer wheel brake (Left brake lever) , 142 Frame in front of floor (Front seat attached part), 143 Frame at back of floor (Rear seat attached part), 144 Frame of trailer (Trailer lower frame), 233 Trailer wheel brake, 254 Brake pipe (Brake pipe for trailer), 262 Pipe on the body side of vehicle, 263 Pipe on trailer side, 265 Mechanical force conversion cylinder (First cylinder), 266 --- Master cylinder (Second cylinder) , 287 --- First piston, 301 --- Second piston WE CLAIM: 1. A vehicle provided with a trailer (10) in which a trailer hitch (26) is provided to the rear of the body of the vehicle (12) and the trailer (13) is coupled using the trailer hitch (26) so that the trailer (13) can be detached, characterized in that: passengers can be seated with their backs turned forward by arranging the trailer hitch (26) in front of the axle of a rear wheel (23) on the body side of the vehicle (12), extending a frame of the trailer to a part above the rear wheel (24), providing a floor for the passengers in the trailer (13) to put their feet in the center of the frame and providing front seats for the passengers to sit on the frame in front of the floor (142). 2. A vehicle provided with a trailer (10) as claimed in Claim 1, wherein: rear seats (64) for passengers to sit are provided to the frame at the back of the floor (143). 3. A vehicle provided with a trailer (10) in which the trailer (13) is coupled to the rear of body of the vehicle (12) via a trailer hitch (26) so that the trailer (13) can be detached, comprising: a trailer wheel brake (233) for braking a trailer (13) wheel by a driver in the body of the vehicle (12) operating, wherein: a brake pipe (254) for transmitting the pressure of brake fluid from a part for applying the trailer wheel brake (233) to the side of the trailer wheel is separated into a pipe on the body side of the vehicle (262) and a pipe on the trailer side halfway (263); a mechanical force conversion cylinder (265) for once converting the pressure of brake fluid to mechanical force is provided at the end of the pipe on the body side of the vehicle (262); a master cylinder (266) for housing a second piston (301) that generates the pressure of the fluid when the second piston (301) is pressed by the end of a first piston (287) provided in the mechanical force conversion cylinder (265) is provided at the end of the pipe on the trailer side (263); and the mechanical force conversion cylinder (265) and the master cylinder (266) are coupled so that they can be detached. 4 A vehicle provided with a trailer (10) substantially as hereinbefore described with reference to the accompanying drawings. Dated this 05/02/2003 [VARUN SHARMA] OF REMFRY & SAGAR AGENT FOR THE APPLICANTS

Full Text

FORM 2
THE PATENTS ACT 1970
[39 OF 1970]
COMPLETE SPECIFICATION
[See Section 10]
"VEHICLE PROVIDED WITH TRAILER"
HONDA GIKEN KOGYO KABUSHIKI KAISHA, a corporation of Japan, 1-1, Minamiaoyama 2-chome, Minato-ku, Tokyo, Japan The following specification particularly describes the nature of the invention and the manner in which it is to be performed :-

The present invention relates to vehicle provided with trailer
[Technical Field of the Invention]
The present invention relates to a vehicle provided with a trailer in which in case the trailer is used for apassenger car, a function of a small turning circle is enhanced, a center of gravity when passengers are seated is lowered, a driver himself/herself can brake the trailer and in addition, the trailer can be detached from the body of the vehicle. [0002] [Prior Art]
For exampl.e, a vehicle provided with a trailer disclosed in Japanese published unexamined patent application No. HeilO-59253, "Traction structure of swing-type three-wheeled vehicle" is known. [0003]
In Figs. 1 and 2 in the patent application, traction structure that a coupling member 28 is attached to the rear of a rear frame 24 of a swing-type three-wheeled vehicle 1
(reference numbers described in the patent application are used as they are) and a coupled part 32 provided to the front of a trailer 7 is coupled to the coupling member 28 is shown.
The trailer 7 is provided with a main frame 30 and right and left wheels 37, 37 are attached to a lower part of the rear of the main frame 30 via a stay 36. [0004]
The structure that an inertia braking system 33 is integrated with the coupled part 32 and in the meantime, the main frame 30 of the trailer 7 is attached to the coupled part 32 so that the main frame can be moved longitudinally of the swing-type three-wheeled vehicle 1 is also shown.
In deceleration, the trailer 7 is moved on the side of the swing-type three-wheeled vehicle 1 by inertia force, an operation cable 74 of the inertia braking system 33 operates a drum brake 73 of a wheel 37 and the wheel 37 is braked. [0005] [Problems to be Solved by the Invention]
In a case that two seats are arranged right and left and two rows each of which includes the two seats are arranged in front and in the rear to seat passengers on the trailer 7 according to the patent application described above, the whole length of the trailer 7 is increased and a function of a small turning circle of the wing-type three-wheeled vehicle 1 for pulling the trailer 7 is deteriorated.
In the case of the structure that passengers are seated on the main frame 3 0 of the trailer 7, a center of gravity on the side of the trailer 7 when the passengers are seated becomes
high and is not desirable. [0006]
As the inertia braking system 33 is operated by only the inertia force of the trailer 7, the trailer cannot be braked by desired control force and at desired timing of a driver seated on the swing-type three-wheeled vehicle 1. [0007]
For means for the driver to brake the wheel 37 of the trailer 7, for example, it is considered that a brake fluid pipe is arranged from the side of the swing-type three wheeled vehicle 1 to the trailer side 7 and a drum brake 73 is operated. If a joint for connecting the side of the swing-type three-wheeled vehicle 1 and the trailer side 7 is provided on the way of the brake fluid pipe, the brake fluid pipe has only to be separated in the joint when the trailer 7 is detached from the swing-type three-wheeled vehicle 1. [0008]
However, the end of the joint is required to be covered with a cap and others to prevent the inside face of the joint from being exposed to the outside and being exposed to rainwater and a cloud of dust. When air is mixed in the brake fluid pipe when the joint is coupled again, air bleeding is required and work becomes troublesome. [0009]
Then, the object of the invention is to enhance a function of a small turning circle in case a trailer is used to carry passengers and in addition, to lower a center of gravity when the passengers are seated (1) , to enable a driver to arbitrarily

brake the trailer (2) respectively by improving the vehicle provided with the trailer described above and to facilitate the separation of a pipe for a brake when the trailer is detached from the body of the vehicle in structure that a brake pipe is crossed from the side of the body of the vehicle to the trailer side. [0010] [Means to Solve the Problems]
To achieve the object, Claim 1 is based upon a vehicle provided with a trailer in which a trailer hitch is provided to the rear of the body of the vehicle and the trailer is coupled using the trailer hitch so that the trailer can be detached and is characterized in that passengers can be seated with their backs turned forward by arranging the trailer hitch in front of an axle of a rear wheel on the body side of the vehicle, extending a frame of the trailer to a part above the rear wheel, providing a floor for passengers in the trailer to put their feet in the center of the frame and providing front seats for the passengers to sit to the frame in front of the floor. [0011]
The whole length of the trailer can be reduced by extending the frame of the trailer to the part above the rear wheel on the body side of the vehicle and arranging the front seat on the frame above the rear wheel, as a result, the whole length of the vehicle provided with the trailer can be reduced and the function of a small turning circle can be enhanced.
When the front seat is attached to the frame above the rear wheel of the trailer and the floor is provided below the

seat, the center of gravity on the trailer side when passengers are seated can be lowered and the stability of the vehicle provided with the trailer can be enhanced. [0012]
Claim 2 is characterized in that rear seats for passengers to sit are provided to a frame at the back of a floor.
The number of passengers who take the trailer can be increased by the front seats and the rear seats. [0013]
Claim 3 is based upon a vehicle provided with a trailer in which the trailer is coupled to the rear of the body of the vehicle via a trailer hitch so that the trailer can be detached and is characterized in that a trailer wheel brake for braking a trailer wheel by a driver seated on the body of the vehicle operating is provided to the vehicle, a brake pipe for transmitting the pressure of brake fluid from a part for applying the trailer wheel brake to the trailer wheel side is separated into a pipe on the body side of the vehicle and a pipe on the trailer side halfway, a mechanical force conversion cylinder for once converting the pressure of brake fluid to mechanical force is provided to the end of the pipe on the body side of the vehicle, a master cylinder for housing a second piston that generates the pressure of brake fluid when the second piston is pressed by the end of a first piston provided in the mechanical force conversion cylinder is provided to the end of the pipe on the trailer side and the mechanical force conversion cylinder and the master cylinder are coupled so that they can be detached.

[0014]
A driver can directly apply the trailer wheel brake by crossing the brake pipe from the body side of the vehicle to the trailer wheel side and the trailer can be braked by desired control force and at desired timing. [0015]
As a passage of brake fluid is not exposed to the outside though the first piston and the second piston are exposed to the outside even if the mechanical force conversion cylinder and the master cylinder are separated when the trailer is detached from the body of the vehicle, a cap and others required in the prior art are not required to be used in the invention, compared with the case that the passage of brake fluid in the following divided joints is required to be covered with a cap and others to protect the passage in case a one touch type joint is used, and the mechanical force conversion cylinder and the master cylinder can be simply separated. [0016] [Mode for Carrying Out the Invention]
Referring to the attached drawings, embodiments of the invention will be described below. The drawings shall be viewed in a direction of reference numbers.

[Brief Description of the Drawings] [Fig. 1]
Fig. 1 is a side view showing a vehicle provided with a trailer according to the invention; [Fig. 2]
Fig. 2 is a plan showing the vehicle provided with the trailer according to the invention; [Fig. 3]
Fig. 3 is a sectional view viewed along a line 3-3 in Fig. 1; [Fig. 4]
Fig. 4 is a perspective view showing a body frame according to the invention;

[Fig. 5]
Fig. 5 is a perspective view showing a trailer frame according to the invention; [Fig. 6]
Fig. 6 is a side view showing a main part of the vehicle provided with the trailer according to the invention; [Fig. 7]
Fig. 7 is a side view showing a trailer hitch according to the invention; [Fig. 8]
Fig. 8 is an exploded perspective view showing the trailer hitch according to the invention; [Fig. 9]
Fig. 9 is a plan showing the trailer hitch according to the invention; [Fig. 10]
Fig. 10 is a sectional view viewed along a line 10-10 in Fig. 9; [Fig. 11]
Fig. 11 is a system diagram showing a braking device of the vehicle provided with the trailer according to the invention; [Fig. 12]
Fig. 12 is a sectional view viewed along a line 12-12 in Fig. 9; [Fig. 13]
Fig. 13 is a sectional view viewed along a line 13-13 in Fig. 9;

[Fig. 14]
Fig. 14 is an explanatory drawing for explaining the action of a relay part according to the invention; [Fig. 15]
Figs. 15 are explanatory drawings for explaining the action of the relay part and a second housing case according to the invention; and [Fig. 16]
Fig. 16 is an explanatory drawing for explaining a state in which the coupling of the trailer hitch is released according to the invention.
Fig. 1 is a side view showing a vehicle provided with a trailer according to the invention and the vehicle provided with the trailer 10 is composed of the body of the vehicle 12 in which a driver 11 is seated and the trailer 13 for passengers coupled to the rear of the body of the vehicle 12. [0017]

The body of the vehicle 12 is a three-wheeled vehicle in which a front fork 16 and a front wheel 17 are attached to a head pipe 15 provided at the front end of a body frame 14 via a handlebar shaft not shown so that the front fork and the front wheel can be steered, a handlebar 18 is attached to an upper part of the handlebar shaft, a power unit 21 is attached to a lower part of an intermediate part of the body frame 14, a first swing arm 22 is attached to a lower part of the body frame 14 so that the first swing arm can be vertically swung, a rear axle 23 is attached to the rear end of the first swing arm 22 so that the rear axle can be revolved, right and left rear wheels 24, 24 (the rear wheel 24 on the inside is not shown) are attached to the rear axle 23 and a trailer hitch 26 as a coupling device for coupling the trailer 13 is attached to loading space 25 provided to an upper part of the rear of the body frame 14 . [0018]
A reference number 30 denotes a front axle as the rotation axis of the front wheel 17, 31 denotes a front fender covering the front wheel 17 over it, 32 denotes a front cover, 33 denotes a wind screen integrated with a roof 34, 35 (a reference number 35 on the inside is not shown) denotes a post supporting the roof 34, 36 (a reference number 36 on the inside is not shown) denotes a grip attached to each post 35, 37 denotes a seat for a driver, 41 (a reference number 41 on the inside is not shown) denotes a rear cushion unit installed between the rear end of the first swing arm 22 and the body frame 14, 42 (a reference number 42 on the inside is not shown) denotes a rear fender

covering each rear wheel 24, 43 denotes a first tail lamp, 45 denotes a step for the driver 11 to put his/her foot, 47 denotes a brake pedal, 48 denotes a change pedal, 51 denotes an air cleaner and 52 denotes a carburetor. A cover covering the body frame 14 is omitted. [0019]
The trailer 13 is a vehicle in which a floor 62 for passengers 61 to put their feet is provided in the center of a trailer frame 60, front seats 63, 63 (the front seat 63 on the inside is not shown) are attached to the trailer frame 60 above the front of the floor 62, rear seats 64, 64 (the rear seat 64 on the inside is not shown) are attached to the trailer frame 60 above the rear of the floor 62, a second swing arm 65 is attached to a lower part of the trailer frame 60 so that the second swing arm can be vertically swung, a trailer axle 6 6 is attached to the rear end of the second swing arm 65 so that the trailer axle can be revolved and right and left trailer wheels 67, 67 (the trailer wheel 67 on the inside is not shown) are attached to the trailer axle 66. [0020]
A reference number 71 denotes a head rest, 72 (the reference number 72 on the inside is not shown) denotes a cushion unit for the trailer installed between the rear end of the second swing arm 65 and the trailer frame 60 and 73 denotes a tail lamp. [0021]
Fig. 2 is a plan showing the vehicle provided with the trailer according to the invention and shows a state in which

the trailer 13 of the vehicle provided with the trailer 10 is swung left (a direction shown by an arrow (left) the inside of which is blank in Fig. 2) with the position of the trailer hitch 26 in the center. The trailer 13 is similarly swung right (a direction shown by an arrow (right) the inside of which is blank in Fig. 2) though it is not shown in Fig. 2. [0022]
A reference number 81 denotes a right brake lever for braking the front wheel 17 of the body of the vehicle 12 and 82 denotes a left brake lever for braking the trailer wheels 67, 67 of the trailer 13. The rear wheels 24, 24 of the body of the vehicle 12 is braked by the brake pedal 47 shown in Fig. 1. [0023]
Fig. 3 is a sectional view viewed along a line 3-3 in Fig. 1, a sprocket (not shown) is attached to an output shaft to a transmission of the power unit 21 shown in Fig. 1, a chain 86 is put around the sprocket and a driven sprocket 85 shown in Fig. 3 and a differential gear unit 88 is attached to the driven sprocket 85 via a bracket 87. [0024]
The differential gear unit 88 is composed of a case 91, a spindle 92 attached to the case 91, first bevel gears 93, 93 supported by the spindle 92 so that the bevel gear can be revolved and second bevel gears 94, 94 engaged with the first bevel gears 93, 93, a left rear axle shaft 95 and a right rear axle shaft 96 are respectively integrated with the second bevel gears 94, 94, and the left rear axle shaft 95 and the right

rear axle shaft 96 are respectively coupled to the rear wheels 24, 24.
The left rear axle shaft 95 and the right rear axle shaft 95 are members forming the rear axle 23 shown in Fig. 1. [0025]
The case 91 of the differential gear unit 88 is a member to the left side of which a left cylindrical member 97 for housing the left rear axle shaft 95 is attached and to the right side of which a right cylindrical member 98 for housing the right rear axle shaft 96 is attached and drum brake assemblies 103, 103 are respectively attached to the respective ends of the left and right cylindrical members 97, 98. Reference numbers 105 and 106 denote a wheel and a tire respectively forming the rear wheel 24, and 107 and 108 denote a drum and a wheel cylinder respectively provided to a hydraulic drum brake assembly 103. [0026]
Fig. 4 is a perspective view showing the body frame according to the invention, the body frame 14 is composed of the head pipe 15, a main frame 112 extended backward and downward from the head pipe 15, a pivot plate 113 attached to a lower part of the rear of the main frame 112, a cross pipe 114 attached to the pivot plate 113, subframes 115, 116 respectively coupled to both ends of the cross pipe 114 by being extended downward and backward from the left and the right of the main frame 112, rear frames 117, 118 respectively curved and extended left and right and backward from a halfway part of the main frame 112, cross beams 123, 124 respectively tying the respective rear

of the rear frames 117, 118, a U-type upper frame 125 which is extended backward and upward from both ends of the cross pipe 114 and halfway parts of which are respectively attached to the rear frames 117, 118 and cross subpipes 127, 128 extended left and right and upward from the rear end of the main frame 112 and respectively coupled to the upper frame 125. [0027]
A reference number 131 denotes a seat attaching bracket attached to the upper frame 125 via the cross pipe 132 to attach the rear of the seat for a driver 37 shown in Fig. 1, 133 and 134 denote a loading space attaching bracket for attaching the loading space 25 and 135 denotes a post attaching bracket for attaching the post 35. [0028]
Fig. 5 is a perspective view showing the trailer frame according to the invention, the trailer frame 60 is composed of a trailer lower frame 144 the center 141 of which is made lower and a front seat attached part 142 and a rear seat attached part 143 of which are made higher, a left pillar 146 and a right pillar 147 attached to the left and right upper parts of the trailer lower frame 144, a front upper cross pipe 148, cross plates 151, 151 and a rear upper cross pipe 152 respectively tying the left pillar 146 and the right pillar 147, front L-type frames 155, 155 respectively extended to the left pillar 146 and the right pillar 147 from left and right parts of the front seat attached part 142 and rear L-type frames 156, 156 respectively extended to the left pillar 146 and the right pillar 147 from left and right parts of the rear seat attached

part 143. A reference number 157 denotes a pivot member attached to a front lower cross pipe 158 of the trailer lower frame 144 and the trailer is coupled to the body of the vehicle
12 shown in Fig. 2 via the pivot member 157.
[0029]
Fig. 6 is a side view showing the main part of the vehicle provided with the trailer according to the invention and shows the trailer hitch 26 , detailedly a pivot shaft 171 of the trailer hitch 26 is arranged forward by distance D from the rear axle 23 of the rear wheel 24 on the body side of the vehicle 12.
As described above, in case the trailer hitch 26 is arranged in front of the rear axle 23, a load of the trailer
13 acts between the front wheel 17 shown in Fig. 1 and the rear
wheel 24 respectively of the body of the vehicle 12 and a
vertical load of the front wheel 17 can be prevented from being
reduced.
The pivot shaft 171 is a shaft of a pivot pin 177 shown in Fig. 7 described later. [0030]
Fig. 6 shows that a passenger can be seated with his/her back turned forward by extending the trailer lower frame 144 of the trailer 13 to a part above the rear wheel 24, providing the floor 62 for the passengers of the trailer 13 to put their feet in the center 141 of the trailer lower frame 144 and providing the front seats 63, 63 (the front seat 63 on the inside is not shown) for the passengers to sit to the front seat attached part 142 in front of the floor 62. Further, the rear seats 64, 64 (the rear seat on the inside is not shown) for

the passengers to sit are provided to the rear seat attached part 143 at the back of the floor 62. [0031]
Fig. 7 is a side view showing the trailer hitch according to the invention and the trailer hitch 26 is composed of a base 175 attached on the body side of the vehicle 12 shown in Fig. 6, a box part 176 attached to the base 175 so that the box part can be revolved and the pivot member 157 attached to the box part 176 via the pivot pin 177 so that the pivot member can be swung left and right. [0032]
Fig. 8 is an exploded perspective view showing the trailer hitch according to the invention and the trailer is coupled to the body of the vehicle by inserting a cylindrical member 183 attached to the end of the pivot member 157 between an upper boss 181 and a lower boss 182 respectively provided to the box part 176 of the trailer hitch 26 as shown by an arrow, inserting the pivot pin 177 into the upper boss 181, the cylindrical member 183 and the lower boss 182 from the side of the upper boss 181 and fixing the pivot pin 177 by a set screw 185 provided to the side of the upper boss 181. [0033]
Fig. 9 is a plan showing the trailer hitch according to the invention and shows that the pivot member 157 on the trailer side is coupled to the box part 176 on the body side of the vehicle by the pivot pin 177.
The pivot member 157 can be swung left and right until the pivot member hits side walls 196, 196 of the box part 176

and its articulation angle is respectively 6 left and right. [0034]
Fig. 10 is a sectional view viewed along a line 10-10 in Fig. 9 and the base 175 of the trailer hitch 26 is composed of a base plate 201 attached to the loading space 25 shown in Fig. 6 and supporting brackets 202, 203 attached to left and right parts of the base plate 201.
The box part 176 is formed by extending arms 204 and 205 left and right and the arms 204, 205 are respectively attached to the supporting brackets 202, 203 so that the arm can be revolved. [0035]
Detailedly, a cylindrical member 206 is attached to one arm 204, a needle bearing 207 is fitted into the cylindrical member 206, a collar 208 is inserted into the inside of the needle bearing 207 and the collar 208 is attached to the supporting bracket 202 by a bolt 211 and a nut 212.
The coupling of the other arm 205 and the supporting bracket 203 is also similar to the side of the arm 204. [0036]
A headlining board 215 is attached to the respective upper part of the side walls 196, 196 of the box part 176, a bottom plate 216 is attached to the respective lower parts, the upper boss 181 is attached to an upper part of the headlining board 215 and the lower boss 182 is attached to an upper part of the bottom plate 215. [0037]
The pivot pin 177 is composed of a knob 217, a flange

218, a straight part 221 and an annular groove 222 formed in an upper part of the straight part 221, the diameter of the flange 218 is made larger than the outside diameter of the upper boss 181, the pivot pin 177 is prevented from being detached by pressing the set screw 185 shown in Fig. 9 on the annular groove 222 and the straight part 221 is inserted into the cylindrical member 183 of the pivot member 157 shown in Fig. 9. [0038]
Fig. 11 is a system diagram showing a braking device of the vehicle provided with the trailer according to the invention and the braking device 230 is composed of a front brake 231 for braking the front wheel 17, a rear brake 232 for braking the rear wheels 24, 24 and a trailer wheel brake 233 for braking the trailer wheels 67, 67. [0039]
The front brake 231 is composed of a right brake lever 81 attached to the handlebar 18, a master cylinder for the front wheel 236 that generates the pressure of brake fluid by the operation of the right brake lever 81, a front brake pipe 237 extended from the master cylinder for the front wheel 236 to the side of the front wheel 17 and a drum brake for the front wheel 238 connected to the end of the front brake pipe 237. A reference number 241 denotes a front wheel cylinder for pressing a brake shoe of the drum brake for the front wheel 23 8 on a drum and the front wheel cylinder is connected to the front brake pipe 237. [0040]

The rear brake 232 is composed of the brake pedal 47 attached to the body frame 14, a master cylinder for the rear wheel 243 that generates the pressure of brake fluid by the operation of the brake pedal 47, a left rear brake pipe 244 and a right rear brake pipe 245 respectively extended from the master cylinder for the rear wheel 243 to the sides of the left and right rear wheels 24, 24 and drum brakes for the rear wheels 246, 246 connected to the respective ends of the left and right rear brake pipes 244, 245. A reference number 247 denotes a pivot shaft that mainly supports the fluctuation of the brake pedal 47, 248, 248 denote rear wheel cylinders for pressing brake shoes of the drum brakes for the rear wheel 246, 246 on drums and the rear wheel cylinders are connected to the left and right rear brake pipes 244, 245. [0041]
The trailer wheel brake 233 is composed of a left brake lever 82 attached to the handlebar 18, a master cylinder for the trailer wheel 253 that generates the pressure of brake fluid by the operation of the left brake lever 82, a brake pipe for the trailer 254 which is extended backward from the master cylinder for the trailer wheel 253 and the side of the end of is branched in two, drum brakes for the trailer wheels 256, 256 connected to the respective ends of the brake pipe for the trailer 254 and a relay part 257 provided in a halfway part of the brake pipe for the trailer 254 and attached to the pivot member 157 of the trailer hitch 26. Reference numbers 258, 258 denote a wheel cylinder on the side of the trailer wheel for pressing brake shoes of the drum brakes for the trailer wheels

256, 256 on the drums and the wheel cylinders on the sides of the trailer wheels are connected to the brake pipe for the trailer 254. [0042]
The brake pipe for the trailer 254 is composed of a pipe 262 on the body side of the vehicle on the front side of the relay part 257 and a pipe 263 on the trailer side on the rear side of the relay part 257.
The relay part 257 is composed of a first cylinder 265 as a mechanical force conversion cylinder for converting the pressure of brake fluid generated in the master cylinder for the trailer wheel 253 to mechanical force, a second cylinder as a master cylinder for receiving the mechanical force generated in the first cylinder 265 and generating the pressure of brake fluid and a first housing case (not shown, described in detail later) for housing the first cylinder 265 and the second cylinder 266, and the first cylinder 265 and the second cylinder 266 can be detached when the trailer 13 is separated from the body of the vehicle 12. [0043]
According to the configuration described above, when the right brake lever 81 is operated, the pressure of brake fluid is generated in the master cylinder for the front wheel 236, is transmitted to the front wheel cylinder 241 of the drum brake for the front wheel 238 via the front brake pipe 237 and can brake the front wheel 17. [0044]
When the brake pedal 47 is worked, the pressure of brake

fluid is generated in the master cylinder for the rear wheel 243 coupled to the brake pedal 47, is transmitted to the drum brakes for the left and right rear wheels 246, 246 via the left rear brake pipe 244 and the right rear brake pipe 245 and can brake the rear wheels 24, 24. [0045]
Further, when the left brake lever 82 is operated, the pressure of brake fluid is generated in the master cylinder for the trailer wheel 253, is transmitted to the wheel cylinders for the trailer wheels 258, 258 of the drum brakes for the trailer wheels 256, 256 via the brake pipe for the trailer 254 and can brake the trailer wheels 67, 67. [0046]
Fig. 12 is a sectional view viewed along a line 12-12 in Fig. 9 and shows that a bracket 274 is attached to the pivot member 157 by bolts 272, 272 and nuts 273, 273 and the relay part 257 is attached to the bracket 274 by bolts 275, 275 and nuts 276, 276. [0047]
The first housing case 277 forming the relay part 257 is provided with a first housing 281 for housing the first cylinder 265 and a second housing 283 for housing the second cylinder 266. [0048]
The first cylinder 265 is composed of a cylinder case 285, a cylinder hole 286 formed in the cylinder case 285, a first piston 287 inserted into the cylinder hole 286 so that the first piston can be moved and a pipe connection 288

communicating with the cylinder hole 286 and connected to the pipe 262 on the body side of the vehicle. Reference numbers 291 and 291 denote a bolt for attaching the first cylinder 265 to the first housing case 277, 292 and 292 denote 0 ring and 293 denotes a cup seal for holding the pressure of brake fluid.
The first piston 287 is composed of a main piston 294 and a deputy piston 295 adjacent to the main piston 294. [0049]
The second cylinder 266 is composed of a cylinder case 297, a cylinder hole 298 formed in the cylinder case 297, a second piston 301 inserted into the cylinder hole 298 so that the second piston can be moved, a spring 302 for pressing the second piston 301 on the side of the first cylinder 265, a connection to a pipe on the trailer side 3 03 communicating with the back side of the second piston 301 in the cylinder hole 298 (that is, the side on which the spring 302 is arranged of the cylinder hole 298) and connected to the pipe on the trailer side 263 and a stopper member 304 for preventing the second piston 301 from being detached on the side of the first cylinder 265. A reference number 306 denotes a seal member attached to the main piston 294 to protect the respective contact parts of the main piston 294 and the second piston 301, and 307 and 307 denote an installation hole provided to the cylinder case 297 to attach the second cylinder 266 to the first housing case 277. [0050]
Next, the action of the relay part 257 will be described.
When the pressure of brake fluid acts in the cylinder

hole 286 of the first cylinder 265, the deputy piston 295 hits the wall of the first housing case 277 and is still, however, the main piston 294 moves right and presses the second piston 301 of the second cylinder 266 right. That is, in the first cylinder 265, the pressure of brake fluid is converted to mechanical force. [0051]
As a result, the second piston 301 is moved right against the elasticity of a spring 302. Hereby, in a brake fluid passage 318 filled with brake fluid and adjacent to the second piston 301, the pressure of brake fluid is generated and is transmitted to the drum brakes for the trailer wheels 256, 256 via the pipe on the trailer side 263 shown in Fig. 11. [0052]
Fig. 13 is a sectional view viewed along a line 13-13 in Fig. 9 and shows that a second housing case 311 for temporarily housing the first cylinder 265 shown in Fig. 12 housed in the relay part 257 shown in Fig. 12 when the trailer 13 shown in Fig. 6 is detached from the body of the vehicle 12 shown in Fig. 6 is attached to an upper part of the box part 176 of the trailer hitch 26 shown in Fig. 9 by bolts 313, 313 and nuts 314, 314 via collars 312, 312. A reference number 315 denotes a stopper member for preventing the first piston 287 shown in Fig. 12 from being detached after the first cylinder 265 is housed. [0053]
The action of the relay part 257 described above will be described below.

Fig. 14 is an explanatory drawing for explaining the action of the relay part according to the invention.
First, the bolts 291, 291 shown in Fig. 12 are loosened and the first cylinder 265 is detached from the first housing case 277 as shown in Fig. 14.
The first cylinder 265 is housed in the second housing case 311. [0054]
Figs . 15A and 15B are explanatory drawings for explaining the action of the relay part and the second housing case according to the invention.
Fig. 15A shows that the first cylinder 265 housed in the second housing case 311 is attached to the second housing case 311 by bolts 318, 318.
The first piston 287 of the first cylinder 265 , detailedly the end of the main piston 294 is made opposite to the end of the stopper member 315 and the seal member 306 covers the stopper member 315. [0055]
Fig. 15B shows the inside of the first housing case 277 from which the first cylinder 265 shown in Fig. 15A is detached.
As the brake fluid passage 318 coupled to the pipe on the trailer side 263 shown in Fig. 11 is not exposed to the outside though the second piston 301 of the second cylinder 266 is exposed to the outside, the brake fluid passage 318 is not exposed to rainwater and dust. [0056]
Fig. 16 is an explanatory drawing for explaining a state

in which the coupling of the trailer hitch is released according to the invention and after the first cylinder 265 is detached from the first housing case 277 and is housed in the second housing case 311, the coupling of the trailer hitch 26 is released as shown by an arrow.
As described above, the separation of the relay part 257 shown in Fig. 12 caused by the release of the coupling of the trailer hitch 26 can be easily performed and the operationability can be enhanced. [0057]
As described referring to the drawings above, the invention is first characterized in that in the vehicle provided with the trailer 10 in which the trailer hitch 26 is provided to the rear of the body of the vehicle 12 and the trailer 13 is coupled using the trailer hitch 26 so that the trailer can be detached, passengers can be seated with their backs turned forward by arranging the trailer hitch 26 in front of the axle of the rear wheel 24 on the body side of the vehicle 12, that is, the rear axle 23, extending the trailer lower frame 144 of the trailer 13 to the part above the rear wheel 24, providing the floor 62 for the passengers in the trailer 13 to put their feet in the center of the trailer lower frame 144 and providing the front seats 63 for the passengers to sit to the frame in front of the floor 62, that is, the front seat attached part 142. [0058]
The whole length of the trailer 13 can be reduced by extending the trailer lower frame 144 of the trailer 13 to the

part above the rear wheel 24 on the body side of the vehicle 12 and arranging the front seat 63 in front seat attached part 142 above the rear wheel 24, as a result, the whole length of the vehicle provided with the trailer 10 can be reduced and the function of a small turning circle can be enhanced. [0059]
Also, as the front seat 63 is attached to the trailer lower frame 144 of the trailer 13 above the rear wheel 24 and the floor is provided below the front seat 63, the center of gravity on the trailer side 13 when passengers are seated can be lowered and the stability of the vehicle provided with the trailer 10 can be enhanced. [0060]
Further, space above the rear wheel 24 can be effectively utilized by arranging the front seat 63 provided to the front of the trailer lower frame 144 of the trailer 13 above the rear wheel 24 on the body side of the vehicle 12. [0061]
The invention is second characterized in that the rear seats 64 for passengers to sit are provided to the frame at the back of the floor, that is, the rear seat attached part 143.
The number of passengers in the trailer 13 can be increased by the front seats 63 and the rear seats 64. [0062]
The invention is third characterized in that in the vehicle provided with the trailer 10 in which the trailer 13 is coupled to the rear of the body of the vehicle 12 via the

trailer hitch 26 so that the trailer can be detached, the trailer wheel brake 233 that brakes the trailer wheel 67 when a driver seated on the body of the vehicle 12 applies it is provided to the vehicle 10, the brake pipe 254 for the trailer for transmitting the pressure of brake fluid from the left brake lever 82 of the trailer wheel brake 233 to the trailer wheel side 67 is separated into the pipe on the body side of the vehicle 262 and the pipe on the trailer side 263 halfway, the first cylinder 265 for once converting the pressure of the brake fluid to mechanical force is provided to the end of the pipe on the body side of the vehicle 262 , the second cylinder 266 for housing the second piston 301 that generates the pressure of the fluid when the second piston is pressed by the end of the first piston 287 provided in the first cylinder 265 is provided to the end of the pipe on the trailer side 263 and the first piston 287 and the second piston 301 are coupled so that they can be detached. [0063]
As the brake pipe for the trailer 254 is crossed from the body side of the vehicle 12 to the trailer wheel side 67, a driver can directly apply the trailer wheel brake 233 and the trailer 13 can be braked by desired control force and at desired timing. [0064]
Also, as the passage of brake fluid is not exposed to the outside though the first piston 287 and the second piston 301 are exposed to the outside even if the first cylinder 265 and the second cylinder 266 are separated when the trailer 13

is detached from the body of the vehicle 12, the cap and others are not required to be used in the invention, compared with the case that the divided joints are required to be covered with the cap and others to protect the passage of the brake fluid of the divided joints in case the one touch type joint is used for example and the first cylinder 265 and the second cylinder 266 can be simply separated.
[0065]
[Effect of the Invention]
The invention produces the following effect owing to the configuration described above.
Passengers can be seated with their backs turned forward by arranging the trailer hitch in front of the axle of the rear wheel on the body side of the vehicle, extending the frame of the trailer to the part above the rear wheel, providing the floor for passengers in the trailer to put their feet in the center of the frame and providing the front seats for the passengers to sit to the frame in front of the floor in the vehicle provided with the trailer according to Claim 1, the whole length of the trailer can be reduced by extending the frame of the trailer to the part above the rear wheel on the body side of the vehicle and arranging the front seat on the frame above the rear wheel, as a result, the whole length of the vehicle provided with the trailer can be reduced and the function of a small turning circle can be enhanced. [0066]
Also, when the front seats are attached to the frame of the trailer above the rear wheels and the floor is provided

below the seats, the center of gravity on the trailer side when passengers are seated can be lowered and the stability of the vehicle provided with the trailer can be enhanced. [0067]
As the vehicle provided with the trailer according to Claim 2 is provided with the rear seats for passengers to sit to the frame at the back of the floor, the number of passengers in the trailer can be increased by the front seats and the rear seats. [0068]
As the vehicle provided with the trailer according to Claim 3 is provided with the trailer wheel brake that brakes the trailer wheel when a driver seated on the body of the vehicle applies it, the braKe pipe for transmitting the pressure of brake fluid from the part for applying the trailer wheel brake to the trailer wheel side is separated into the pipe on the body side of the vehicle and the pipe on the trailer side halfway, the mechanical force conversion cylinder for once converting the pressure of the brake fluid to mechanical force is provided to the end of the pipe on the body side of the vehicle, the master cylinder for housing the second piston that generates the pressure of the brake fluid when the second piston is pressed by the end of the first piston provided to the mechanical force conversion cylinder is provided to the end of the pipe on the trailer side and the mechanical force conversion cylinder and the master cylinder are coupled so that they can be detached, the driver can directly apply the trailer wheel brake by crossing the brake pipe from the body side of the vehicle to

the trailer wheel side and the trailer can be braked at desired control force and at desired timing. [0 069]
Also, as the passage of brake fluid is not exposed to the outside though the first piston and the second piston are exposed to the outside even if the mechanical force conversion cylinder and the master cylinder are separated when the trailer is detached from the body of the vehicle, the cap and others are not required to be used in the invention, compared with the case that the passages of the brake fluid of the divided joints are required to be covered with the cap and others to protect the passages of the brake fluid in the divided joints in case the one touch type joint is used for example and the mechanical force conversion cylinder and the master cylinder can be simply separated.
(Description of Reference Numbers]
10 Vehicle provided with trailer, 12 Body of vehicle,
13 Trailer, 23 Axle (Rear axle), 24 Rear wheel,
26 Trailer hitch, 62 Floor, 63 Front seat, 64
Rear seat, 67 Trailer wheel, 82 Part for applying trailer
wheel brake (Left brake lever) , 142 Frame in front of floor
(Front seat attached part), 143 Frame at back of floor (Rear
seat attached part), 144 Frame of trailer (Trailer lower
frame), 233 Trailer wheel brake, 254 Brake pipe (Brake
pipe for trailer), 262 Pipe on the body side of vehicle,
263 Pipe on trailer side, 265 Mechanical force
conversion cylinder (First cylinder), 266 --- Master cylinder (Second cylinder) , 287 --- First piston, 301 --- Second piston

WE CLAIM:
1. A vehicle provided with a trailer (10) in which a trailer hitch (26) is
provided to the rear of the body of the vehicle (12) and the trailer (13) is
coupled using the trailer hitch (26) so that the trailer (13) can be detached,
characterized in that:
passengers can be seated with their backs turned forward by arranging the trailer hitch (26) in front of the axle of a rear wheel (23) on the body side of the vehicle (12), extending a frame of the trailer to a part above the rear wheel (24), providing a floor for the passengers in the trailer (13) to put their feet in the center of the frame and providing front seats for the passengers to sit on the frame in front of the floor (142).
2. A vehicle provided with a trailer (10) as claimed in Claim 1, wherein:
rear seats (64) for passengers to sit are provided to the frame at the
back of the floor (143).
3. A vehicle provided with a trailer (10) in which the trailer (13) is
coupled to the rear of body of the vehicle (12) via a trailer hitch (26) so that
the trailer (13) can be detached, comprising:
a trailer wheel brake (233) for braking a trailer (13) wheel by a driver in the body of the vehicle (12) operating, wherein:
a brake pipe (254) for transmitting the pressure of brake fluid from a part for applying the trailer wheel brake (233) to the side of the trailer wheel is separated into a pipe on the body side of the vehicle (262) and a pipe on the trailer side halfway (263);
a mechanical force conversion cylinder (265) for once converting the pressure of brake fluid to mechanical force is provided at the end of the pipe on the body side of the vehicle (262);
a master cylinder (266) for housing a second piston (301) that generates the pressure of the fluid when the second piston (301) is pressed

by the end of a first piston (287) provided in the mechanical force conversion cylinder (265) is provided at the end of the pipe on the trailer side (263); and the mechanical force conversion cylinder (265) and the master cylinder (266) are coupled so that they can be detached.
4 A vehicle provided with a trailer (10) substantially as hereinbefore described with reference to the accompanying drawings.
Dated this 05/02/2003
[VARUN SHARMA]
OF REMFRY & SAGAR
AGENT FOR THE APPLICANTS

Documents:

163-mum-2003-abstract(29-5-2008).doc

163-mum-2003-abstract(29-5-2008).pdf

163-mum-2003-cancelled page(6-2-2003).pdf

163-mum-2003-claims(granted)-(29-5-2008).doc

163-mum-2003-claims(granted)-(29-5-2008).pdf

163-mum-2003-correspondence(29-5-2008)-.pdf

163-mum-2003-correspondence(ipo)-(15-9-2008).pdf

163-mum-2003-drawing(7-3-2003).pdf

163-mum-2003-form 1(27-5-2008).pdf

163-mum-2003-form 1(6-2-2003).pdf

163-mum-2003-form 13(29-5-2008).pdf

163-mum-2003-form 18(12-1-2007).pdf

163-mum-2003-form 2(granted)-(29-5-2008).doc

163-mum-2003-form 2(granted)-(29-5-2008).pdf

163-mum-2003-form 3(13-4-2004).pdf

163-mum-2003-form 3(29-5-2008).pdf

163-mum-2003-form 3(6-2-2003).pdf

163-mum-2003-form 5(29-5-2008).pdf

163-mum-2003-pettition under rule 138(29-5-2008).pdf

163-mum-2003-power of authority(19-5-2003).pdf

163-mum-2003-power of authority(29-5-2008).pdf

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Patent Number

224116

Indian Patent Application Number

163/MUM/2003

PG Journal Number

06/2009

Publication Date

06-Feb-2009

Grant Date

29-Sep-2008

Date of Filing

06-Feb-2003

Name of Patentee

HONDA GIKEN KOGYO KABUSHIKI KAISHA

Applicant Address

1-1,Minamiaoyama 2-CHOME, MINATO-KU, TOKYO JAPAN.

Inventors:

#	Inventor's Name	Inventor's Address
1	TADANORI HORIUCHI	C/o Kabushiki Kaisha Honda Gijutsu Kenkyusho 4-1,CHUO 1-CHOME, WAKO-SHI, SAITAMA, JAPAN.
2	YOSHIHISA IEDA	C/o KABUSHIKI KAISHA HONDA GIJUTSU KENKYUSHO 4-1,CHUO 1-CHOME, WAKO-SHI, SAITAMA, JAPAN

PCT International Classification Number

B60P

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	2002-039359	2002-02-15	Japan