Title of Invention

IMPROVED BICYCLE

Abstract An improved bicycle, comprising - a common gear system, an accelerating free wheel, an existing free wheel and three chains, the common gear system comprising a solid shaft (1-1) and con centric hollow cylindrical shaft (3-3), the accelerating free wheel having two attached parallel chain gears of specified diameters, the existing free wheel having specified diameter, the three chains having adequate lengths, the first chain (c1) being the drive chain connecting the paddle gear (9) and the outer gear (7) of acceler- ating free wheel, the second chain (c2) connecting the larger gear (8) of the accelerating free wheel and smaller chain gear (5) of the hollow shaft of the common gear system, the third chain (c3) connecting the other chain gear (6) of the hollow shaft and the existing free wheel (10), characterized in that normal paddling by making the accelerating free wheel rotate three times of the rotation of the drive gear, increasing successive speeds of the three chains connecting the common gear system, the accelerating free wheel and the free wheel of the rear wheel yields speedy motion of the invention.
Full Text The following specification particularly describes and ascertains the nature of this invention and the manner in which it is to be per formed.
It has already been proposed of a bicycle consisting mainly two wheels, a drive gear/paddle gear, a free wheel and a chain. The drive gear is conventional shafted. It is connected with an existing free wheel attached to one side of the hubs of the rear wheel of the existing bicycle with a chain. The speed of a bicycle achieved by normal paddling the drive gear cannot meet the expectation of the riders.
In many countries, many attempts have been made to drive in more speed by improving the existing bicycle. In this context, it is not unnecessary to cite the main features of patented some bicycles in U. S. A.. Most of these patented bicycles consist basically derailer system of multi chain-gear governed by different techniques. The speeds or such inventions are incresed or decresed by derailing the single chain from a gear to smaller or larger gear of the multi gear-free wheel. The ranges of speeds of such inventions are not enough to meet our present day-demands and expectations.
One needs comparatively more speedy bike to get the advantage of less rolling friction between two tyres of the two wheels and road surface at higher speed to have a comfortable journey. However, the speed of this 'less' rolling friction is limited by air resistance. One needs quick paddling to move fast on such a bike, which becomes laborious soon though mechanical advantage is obtained in speedy motion.
Hence slow paddling with little mechanical disadvantage yielding speedy motion would be fit for a comfortable and long time journey
The principal object of this invention is to ride fast during long time of a journey.
The another abject of this invention is to decrease dissipation of energy against frictional forces.
(2)

Field of Invention:
The invention "Imporved bicycle" relates the mechanical field of invention.
Summary of the invention:
According to this invention this bicycle consists of two main components namely a Common Gear system and an Accelerating free wheel shown in fig. 1 and fig.-2 on the sheet -1 respectively. The common gear system consists of a solid shaft and a concentric hollow shaft. The solid shaft (1 -1) is embeded in the hollow shaft with a set of two similar ball-bearings (2, 2). The concentric hollow shaft (3-3) is embeded in the hollow cylindrical outer with a set of two large similar ball bearings (4,4). Two chain gears (5,6) of different diameters are fastened at the both ends of the hollow shaft.
The accelerating free wheel is nothing but an existing free wheel comprises two parallel chain gears (7,8) of different diameters shown in fig. 2 on the sheet -1.
The common gear system is housed in the front portion of the body perpendicular to the plane of the body frame. A paddle gear (9) is attached to the solid shaft at the side to that of the smaller gear (5) of the hollow shaft. The accelerating free wheel is mounted on the hubs of the rear wheel at the side to that of paddle gear w.r.t. the body frame and also an existing free wheel at the other side. The common gear system, the accelerating free wheel and the existing free wheel are combined with three chains of required lengths. The combined arrangement is shown fig.3 on the sheet - 2. The view of the improved bicycle is shown in fig. 4 on the sheet - 3.
The first chain called drive chain (c1) connects the paddle gear and the smaller gear of the accelerating free wheel. The second chain (c2) connects the other gear of the accelerating free wheel and the smaller gear of the hollow shaft at the same side of the invention. The third chain (c3) connects the other gear of the hollow shaft and the existing free wheel at the other side of the invention.
(3)

Brief description of the accompanying drawings:
Figure-1 on the sheet-1 shows a sketch of the common gear system with its principal components :- (1-1) solid shaft/axle, (2,2) ballbearings, (3-3) concentric hollow shaft, (4,4) large ball bearings, (5) chain gear and (6) larger chain gear.
Figure-2 on the sheet -1 shows a sketch of the accelerating free wheel with its main components :- (7) chain gear and (8) large chain gear.
Figure-3 on the sheet- 2 shows a diagram of the combined arrangement. Here (9) paddle gear and (10) existing free wheel are included.
Figure-4 on the sheet - 3 shows the view of the invention c. g. s. -common gear system, a. f. w. - accelerating free wheel, c1 - first/drive chain, c2 - second chain, c3 - third chain.
Details of the invention:
According to this invention the bicycle consists of two main components - a common gear system and an accelerating free wheel, an existing free wheel and three chains.
The common gear system comprises a solid shaft and a concentric hollow cylindrical shaft. The solid shaft (1-1) is embeded in hollow shaft (3-3) with a set of two similar ball bearings (2,2). The concentric hollow shaft is embeded in a hollow cylindrical outer with a set of two similar large ball bearings (4,4). This new technique enables the solid shaft and concentric hollow shaft rotate independently and co-axially. A chain gear (5) having diameter of about 5.5 cm. of 16 teeth and chain gear (6) having diameter of about 8.0 cm. of 22 teeth are fastened at the both ends of the hollow shaft.
The accelerating free wheel is nothing but an existing free wheel having two attached parallel chain gears of diameters abouts 5.5 cm. (7) and 8.0 cm. (8) of teeth 16 and 22 respectively.
(4)

The common gear system is housed in the front portion of the body frame. A paddle gear/drive gear (9) having diameter of about 16.5 cm. of 48 teeth is attached to the solid shaft at the side to that of the smaller chain gear (5) of the hollow shaft. The accelerating free wheel with smaller chain gear (7) outward is mounted on the hubs (11) of the rear wheel at the side to that of paddle gear. Also an existing free wheel (10) having diameter of about 6.5 cm. of 18 teeth at the other side.
The common gear system is combined with the accelerating free wheel and the free wheel (10) with three chains of adequate lengths. This combined arrangement is shown-in fig. 3 on the sheet 2. The first chain called drive chain (c1) connects the paddle gear (9) and the outer gear (7) of the accelerating free wheel. The second chain (c2) connects the other gear (8) of the accelerating free wheel and the smaller chain gear (5) of the hollow shaft of the common gear system. The drive chain (c1) and the second chain (c2) are at the same side of this invention w.r.t. the plane of the body frame. The third chain (c3) is connected between the other chain gear (6) of the hollow shaft and the free wheel (10) at the other side of this improved bicycle.
One's Daddling at the beginning rotates the accelerating free wheel and hence the initial starting of the rear wheel. It makes the accelerating free wheel rotate three times the rotations of the drive gear. The second chain is driven in higher speed w. r. t. the first chain and causes increased r. p. m. of the hollow shaft of the common gear system by about 1.4 times. This causes the third chain at the other side drive in further more speed w. r. t. the second chain. This increasing the r. p. m. of the free wheel and hence the rear wheel of this bicycle by about five times the rotations of the drive gear, yields the speedy motion of the improved bicycle.
(5)

I claim :-
1. An improved bicycle, comprising - a common gear system,
an accelerating free wheel, an existing free wheel and three chains,
the common gear system comprising a solid shaft (1-1) and con
centric hollow cylindrical shaft (3-3), the accelerating rree wheel
having two attached parallel chain gears of specified diameters,
the existing free wheel having specified diameter, the three chains
having adequate lengths, the first chain (c1) being the drive chain
connecting the paddle gear (9) and the outer gear (7) of acceler
ating free wheel, the second chain (c2) connecting the larger gear
(8) of the accelerating free wheel and smaller chain gear (5) of
the hollow shaft of the common gear system, the third chain
(c3) connecting the other chain gear (6) of the hollow shaft
and the existing free wheel (10), characterized in that
normal paddling by making the accelerating free wheel rotate three
times of the rotation of the drive gear, increasing successive
speeds of the three chains connecting the common gear system,
the accelerating free wheel and the free wheel of the rear wheel
yields speedy motion of the invention.
2. An improved bicycle as claimed in 1, in which the common
gear system consists two concentric shafts - one solid shaft in
the other hollow cylindrical shaft.
3. An improved bicycle as claimed in 1, wherein the accelerat
ing free wheel contributes in starting and speedy motion of the
invention.

Dated this 17th day of April 2002, (Fajal Ali Shaikh)
(6)
An improved bicycle, comprising - a common gear system,
an accelerating free wheel, an existing free wheel and three chains, the common gear system comprising a solid shaft (1-1) and con centric hollow cylindrical shaft (3-3), the accelerating free wheel having two attached parallel chain gears of specified diameters, the existing free wheel having specified diameter, the three chains having adequate lengths, the first chain (c1) being the drive chain connecting the paddle gear (9) and the outer gear (7) of acceler- ating free wheel, the second chain (c2) connecting the larger gear (8) of the accelerating free wheel and smaller chain gear (5) of the hollow shaft of the common gear system, the third chain (c3) connecting the other chain gear (6) of the hollow shaft and the existing free wheel (10), characterized in that normal paddling by making the accelerating free wheel rotate three times of the rotation of the drive gear, increasing successive speeds of the three chains connecting the common gear system, the accelerating free wheel and the free wheel of the rear wheel yields speedy motion of the invention.

Documents:

00214-cal-2002 abstract.pdf

00214-cal-2002 claims.pdf

00214-cal-2002 description(complete).pdf

00214-cal-2002 drawings.pdf

00214-cal-2002 form-1.pdf

00214-cal-2002 form-18.pdf

00214-cal-2002 form-2.pdf

00214-cal-2002 form-3.pdf

214-cal-2002-granted-abstract.pdf

214-cal-2002-granted-claims.pdf

214-cal-2002-granted-description (complete).pdf

214-cal-2002-granted-drawings.pdf

214-cal-2002-granted-examination report.pdf

214-cal-2002-granted-form 1.pdf

214-cal-2002-granted-form 18.pdf

214-cal-2002-granted-form 2.pdf

214-cal-2002-granted-form 3.pdf

214-cal-2002-granted-letter patent.pdf

214-cal-2002-granted-specification.pdf


Patent Number 195142
Indian Patent Application Number 214/CAL/2002
PG Journal Number 30/2009
Publication Date 24-Jul-2009
Grant Date 21-Oct-2005
Date of Filing 17-Apr-2002
Name of Patentee SHAIKH FAJAL ALI
Applicant Address S/O HAMIDUR SHAIKH, VILL. :BER-RAM CHANDRAPUR, P.O :PIPULBARIA, P.S :MURITIA, NADIA
Inventors:
# Inventor's Name Inventor's Address
1 SHAIKH FAJAL ALI S/O HAMIDUR SHAIKH, VILL. :BER-RAM CHANDRAPUR, P.O :PIPULBARIA, P.S :MURITIA, NADIA, PIN-741152
PCT International Classification Number B62M 11/06
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA