Title of Invention

BIAXIAL WHEEL HUB BEARING VALIDATION TEST RIG AND METHOD OF TESTING THEREOF

Abstract

The present invention relates to biaxial wheel hub bearing validation test rig which comprises basically at least two hydraulic actuators, one is axial actuator for applying axial load to the wheel hub bearing assembly and another is radial actuator for applying radial load to the wheel hub bearing assembly. This test rig encompasses the endurance test requirements for “CORNERING FATIGUE TEST” for wheel hub bearings and hub bearing units of passenger cars, LCV’s, HCV’s, & UN’s subjected to actual Road load conditions being applied on test rig. In accordance with the present invention, the load application in which radial load is applied exactly at the wheel centre line and axial load at the dynamic tire radius. With this test rig actual road load conditions like vertical, Left Cornering, Right Cornering loads which are experienced by the wheel can be applied to the wheel hub bearing assembly. This test rig has been developed to simulate the actual road load conditions with the help of axial and radial actuators. This new biaxial wheel hub bearing validation test rig is compact in construction with advanced features, ease of operation and cost effective. In accordance with this invention new method of testing the wheel hub bearing validation test rig has been developed.

Full Text

FORM 2 THE PATENTS ACT 1970 (39 of 1970) & THE PATENTS RULES, 2003 COMPLETE SPECIFICATION (See Section 10; rule 13) TITLE OF THE INVENTION Biaxial wheel hub bearing validation test rig and method of testing thereof APPLICANTS TATA MOTORS LIMITED, an Indian company Having its registered office at Bombay House, 24 Homi Mody Street, Hutatma Chowk, Mumbai 400 001 Maharashtra, India INVENTORS Mr Milind A Bankar and Mr Sanjeev G Annigeri both Indian Nationals of TATA MOTORS LIMITED, An Indian company having its registered office at Bombay House, 24 Homi Mody Street, Hutatma Chowk, Mumbai 400 001 Maharashtra, India PREAMBLE TO THE DESCRIPTION The following specification particularly describes the invention and the manner in which it is to be performed. FIELD OF INVENTION This invention relates to wheel hub bearing test rig and more particularly it relates to biaxial wheel hub bearing validation test rig and method of testing thereof. BACKGROUND OF INVENTION Generally the conventional wheel hub bearing test rig is used for endurance testing of hub and hub bearings for various vehicle applications. Conventional wheel hub bearing test rig basically comprises of Hydraulic cylinder(a) which is connected to the test fixture (b) to hold hub bearing unit (c) at one end and other end is mounted at top to structural frame(i). This hub bearing assembly in turn is mounted on the flange of the support spindle through adoptor. The support spindle is enveloped within the Plummer block (d) and is coupled with output shaft of gear box (e). The Gear box is accompanied with pump which is connected to the hydraulic cylinder with the help of hose pipes. The input shaft of gear box is coupled with motor (f) which is mounted on a frame (g). In this hub bearing test rig, resultant load of axial load and radial load is being calculated based on vehicle load and the load is being applied at an angle to tire contact patch. There is a control panel (PLC) (j) through which input conditions are being set. Variable frequency drive (VFD) (h) which helps motor to achieve required speed. Initially the test input parameters are being fed in Programmable logic control (PLC) unit. Through Programmable logic control (PLC) unit the input signals will go to Variable frequency drive (VFD).The function of variable frequency drive is to regulate the speed of Motor and helps to achieve the required speed and maintains the speed of the motor as per test conditions. The Motor is connected to the gear box which helps to achieve required output speed to the hub assembly. The gear box is operated with the help of a lever. The gear box is accompanied with a pump which operates hydraulic power pack which in turn operates the hydraulic cylinder and applies required amount of resultant load at the component end specified in test conditions. The load is being applied as per test cycle. The application of load is regulated by directional control valve. The amount of load is controlled by pressure control valve. For heat dissipation a heat exchanger is used. The Conventional wheel hub bearing test rig has following limitations: 1. The load is not applied exactly at the component end but at some offset and thus does not replicate exact vehicle road load conditions. The load is applied at an angle to the wheel contact patch. 2. The conventional test rig setup occupies lot of space and more over its operation is complex due to more number of parts. OBJECTS OF INVENTION The main object of the present invention is to provide a biaxial wheel hub bearing validation test rig. Another object of the present invention is to provide a method of testing wheel hub bearing validation by biaxial wheel hub bearing validation test rig. Yet another object of the present invention is to provide a biaxial wheel hub bearing validation test rig which is simple in construction, cost effective and easy to operate or handle. STATEMENT OF INVENTION Biaxial wheel hub bearing validation test rig comprises; Wheel hub bearing assembly, Mounting frame for mounting said wheel hub bearing assembly, Adaptor mounted on spindle, Plummer block for housing said adaptor and supporting said spindle, Motor which is mounted on said frame, Support spindle is coupled with shaft of said motor, At least two hydraulic actuators, wherein said hydraulic actuators are Radial actuator for applying radial load to said wheel hub bearing assembly, said radial actuator is mounted from top of the frame by means of bracket that holds the radial cylinder firmly with the help of support bracket mounted on top of the bracket which slides on sliding rail provided on said bracket to adjust the said radial actuator to wheel centre line, Axial actuator for applying axial load on the wheel hub bearing assembly said axial actuator is mounted on said frame by means of load bracket that holds the axial cylinder firmly with the help of klevis pin , said bracket having sliding arrangement which facilitates said axial actuator vertical movement to adjust the dynamic tire radius . wherein said radial actuator comprises hub adopter for holding and driving the test component and is made up of tough materials. wherein said radial actuator comprises radial load cell for sensing compression and tension force which is connected by radial bracket. wherein said radial actuator comprises load cell adopter for transferring the accurate load coming from the said cylinder which is connecting member for said radial actuator and said radial load cell. wherein said axial actuator comprises axial load cell for sensing the compression and tension force. wherein said axial actuator comprises load cell adopter for connecting said axial load cell and axial actuator. wherein said axial actuator is double acting cylinder has identical areas on each side of the piston and which enables powered motion in extraction and retraction thereby providing equal forces in either direction with equal displacement. Method of testing wheel hub bearing validation by biaxial wheel hub bearing validation test rig comprises; Preparing of test hub bearing assembly, checking freeness of the test hub bearings and fitment of hub assembly on fixture, checking the axial play of hub bearing with the help of dial gauge and stand for whether axial play is within the limit as prescribed in the drawings, Measuring the frictional torque in assembly before the test, Mounting the hub Assembly along with the fixture on Plummer block adaptor, Checking and setting the run out of the hub bearing assembly, Adjusting the radial actuator inline with the wheel centre line. Adjusting the axial actuator to dynamic tire radius (DTR) which varies from application to application, Fixing the vibration sensor, temperature sensor on non rotating part of the assembly close to the bearing, Rotating the hub assembly under no load condition to ensure proper rotation of the hub Assembly, Entering the file name to the test system, Selecting manual mode, Entering description of the test in the description cell test system. Setting the load and rpm parameter for the test, Setting rig trip level for each acquired parameters, Checking the test status indicators to be green, Running the test if indicators is green, Generating the test reports. Method of testing wheel hub bearing validation by biaxial wheel hub bearing validation test rig comprises; Preparing of test hub bearing assembly, checking freeness of the test hub bearings and fitment of hub assembly on fixture, checking the axial play of hub bearing with the help of dial gauge and stand for whether axial play is within the limit as prescribed in the drawings, Measuring the frictional torque in assembly, Mounting the Hub Assembly along with the fixture on Plummer block adaptor, Checking and Setting the Run Out of the Hub bearing Assembly , Adjusting the Radial actuator inline with the wheel centre line, Adjusting the axial actuator to dynamic tire radius (DTR) which varies from application to application, Fixing the vibration sensor, temperature sensor on non rotating part of the assembly close to the bearing, Rotating the hub assembly under no load condition to ensure proper rotation of the hub Assembly, Entering the file name to the test system, Selecting preset mode, Selecting loading parameters; Sine wave/Square wave/Constant/Road Load data, Selecting test speed and test duration, Setting rig trip level for each acquired parameters, Checking the test status indicators to be green, Running the test if indicators is green, Generating the test reports. SUMMARY OF INVENTION This invention is more related to biaxial wheel hub bearing validation test rig to simulate the load conditions on the rig, which the wheel hub bearing assembly of the vehicle experiences at extreme cornering and on different profile of the road conditions. The object of this invention is to test the wheel hub bearing validation in more realistic manner by applying separate axial and radial load rather than conventional resultant load setup. In the present biaxial wheel hub bearing validation test rig the wheel bearing experiences load at center of wheel. The radial load is applied at wheel center line and the axial load is being applied at tire contact patch by maintaining the distance of dynamic tire radius (DTR). This load is achieved by two actuators mounted on structure of the rig. The biaxial wheel hub bearing validation test rig basically comprises of two hydraulic actuators, one is axial actuator which is mounted on frame member and channel provided on load bracket for sliding arrangement , so that axial actuator can be moved vertically for adjusting dynamic tire radius (DTR) which varies for application to application. And another actuator is Radial actuator which is mounted vertically from top of frame. The wheel hub bearing assembly is connected to adaptor mounted on spindle at one end which in turn is supported by plummer block. Plummer block comprises of two bearings at both end. The one end of support spindle is coupled with shaft of motor which is mounted on the frame. In its working principle, the derived test conditions is feed into NI DAQ control panel , through this the input goes to variable frequency drive(VFD).Here variable frequency drive( VFD) works as intermittent unit which regulates the motor and maintains the constant speed and torque through out the test. The motor is coupled to one side of the shaft spindle, as there will be more load coming to the spindle while testing, to overcome with this problem the Plummer block is introduced which comprises of two heavily rated bearings in housing. These bearing carry the entire load coming to the spindle and stops load transferring to motor which prevents the motor failure. More sophisticated hydraulic power pack is used for the load application. There are proportional valves which are incorporated in this hydraulic power pack are being used for getting high frequency response and proper distribution of load to the actuators based on the data acquired during road load data (RLD). DETAILED DESCRIPTION OF INVENTION Referring now to the drawings wherein the showings are for the purpose of illustrating a preferred embodiment of the invention only, and not for the purpose of limiting the same. Fig 1 shows the exploded view of general wheel hub assembly configuration. Fig 2 shows the layout of conventional hub bearing test rig Fig. 3 shows the layout of biaxial wheel hub bearing validation test rig. Fig 4 shows the isometric view of biaxial wheel hub bearing validation test rig. Fig. 5 shows the detailed view of radial actuator along with frame, brackets and other components used in the assembly. Fig. 6 shows the detailed view of axial actuator along with frame, brackets and other components used in the assembly. This invention is more related to biaxial wheel hub bearing validation test rig to simulate the load conditions on the rig, which the wheel assembly of the vehicle experiences at extreme cornering and on different profile of the road conditions. In the present test rig the wheel bearing experiences load at center of wheel. The radial load is applied at wheel center line and the axial load is being applied at tyre contact patch by maintaining the distance of dynamic tire radius (DTR). And this load is achieved by two actuators mounted on structure of the test rig. The new hub bearing test rig as shown in Figure 3 basically comprises of two Hydraulic actuators, one is axial actuator(l) which is mounted on frame member and channel provided on load bracket (19) (see Fig 6), so that axial actuator can be moved accordingly in vertical direction for adjusting dynamic tire radius (DTR) which varies for application to application. And another actuator is Radial actuator (2) which is mounted vertically from top of frame. The hub bearing assembly (3) is connected to adopter (5) mounted on spindle at one end which in turn is supported by Plummer block (4). Plummer block comprises of two bearings at both end. The one end of support spindle is coupled with shaft of motor (6) which is mounted on the frame (7) and other end is coupled with the adopter. In its working principle, the derived test conditions is feed into NI DAQ control panel , through this the input goes to variable frequency drive(VFD).Here variable frequency drive( VFD) works as intermittent unit which regulates the motor and maintains the constant speed and torque through out the test. The motor is coupled to one side of the shaft spindle, as there will be more load coming to the spindle while testing, to overcome with this problem the Plummer block is introduced which comprises of two heavily rated bearings in housing. These bearing carry the entire load coming to the spindle and stops load transferring to motor which prevents the motor failure. More sophisticated Hydraulic power pack is used for the load application. There are proportional valves which is incorporated in the this hydraulic power pack is being used for getting high frequency response and proper distribution of load to the actuators based on the data acquired during road load data(RLD). As a software part of it, NI DAQ software is used to acquire & monitor critical test parameters like vibration level, test rpm, load, hydraulic pressure & temperature etc will be monitored and acquired with the accuracy of 50 points per sec basis, along with the graph. NI DAQ hardware & software part is very compact in comparison with Programmable logic control (PLC) unit used in the conventional hub bearing test rig. It helps to locate the initiation of any failure and examine failure initiation point. This data can be acquired and stored in the system and used further for analysis and on line report generation. Now referring to figure 5, which shows schematic arrangement of radial load actuator. In vehicle, under dynamic condition, the wheel bearing assembly experiences vertical loads from road through tyre contact path. This vertical load is applied by means of radial actuator. Radial actuator is provided for applying radial load to said wheel hub bearing assembly, said radial actuator is mounted from top of the frame by means of bracket (12) that holds the radial cylinder firmly with the help of support bracket (14) mounted on top of the bracket (12) which slides on sliding rail provided on said bracket to adjust the said radial actuator to wheel centre line. The radial actuator comprises of hub adopter (8). This hub adaptor is intended for holding and driving the test component. This is press fitted in to the spindle and tightened with the fasteners to avoid any slippage between the same. Tough material is used for making this adaptor taking into consideration that it should withstand high load, transferred to it during testing. Enough space is provided to adjust the eccentricity of the hub unit with respect to the axis of drive spindle. There are two brackets, by means of which the actuators are positioned. Bracket (12), which is a vertical member that holds the radial cylinder firmly by means of support bracket (14) and rear eye and klevis pin (13). The top end of the radial actuator is suspended by means of the rear eye and klevis pin. Klevis pin also facilitate the actuator to rotate in all degrees of freedom. The support bracket (14) is mounted on the top of the bracket which holds the klevis pin (13) and slides on sliding rail provided on bracket to adjust the actuator to wheel centre line. Once the adjustment of vertical actuator is done, the support bracket is locked to restrict the actuator movement . This is helpful to adjust the actuator to the wheel center line for application to application. Said radial actuator comprises load cell adopter (11) which transfers the accurate load coming from cylinder. It is made up of stiff material. Said load cell adopter acts as a connecting member for said radial actuator which also comprises radial load cell (10) wherein radial load cell has 8 ton force sensing capacity in both compression and tension mode. Other end of the said radial load cell is bridged by radial bracket (09). Said radial bracket acts as an intermediate member for the said load cell and the hub adopter holding unit. Said intermediate member is also made up of stiff material to transfer the accurate load coming from cylinder. Now referring to Figure 6, which shows the schematic arrangement of axial load actuator mounting, In vehicle, under dynamic condition, the wheel bearing assembly experiences cornering loads through tyre contact path. This cornering load is applied by means of the axial actuator .To simulate this condition, the combined load bracket (19) has been developed. Axial actuator for applying axial load on the wheel hub bearing assembly, said axial actuator is mounted on said frame by means of load bracket (19) that holds the axial cylinder firmly with the help of clevis pin (21), said load bracket having sliding arrangement which facilitates said axial actuator vertical movement to adjust the dynamic tire radius. Here axial actuator is adjusted according to dynamic tire radius (DTR) by the sliding arrangement provided on said bracket and locked. This bracket facilitates the axial actuator (1) to move an adequate amount in vertical direction that is required for adjusting various dynamic tire radius (DTR) for range of applications. The axial actuator is held by the unit called clevis pin (15, 21). Pin (15) is comparatively smaller in size and linked between the rear eye (16) and the rig structure, the said rear eye is used as a link to bridge the gap between the load cell (17) and clevis pin (15). Another clevis pin (21) is connected between the actuator to load bracket (19) so as to transfer the load impending from actuator to said load bracket. Load cell (17) has 4 ton force sensing capacity in both compression and tension mode. This load cell is joined to axial actuator by means of load cell adopter (18) which is made up of hard material and tapped from both side. Double acting cylinder is used as an axial actuator (1) for applying axial load, in this hydraulic pressure is applied to either port giving powered motion when extending and retracting. Double acting cylinder has identical areas on each side of the piston and they can provide equal forces in either direction with equal displacement. In accordance with method of testing wheel hub bearing validation comprises Providing of test hub bearing assembly which comprises, Checking freeness of the test hub bearings and fitment of hub assembly on fixture, checking the axial play of hub bearing with the help of dial gauge for whether axial play is within the prescribed limit. Measuring the frictional torque in assembly by torque sensor, Mounting the hub bearing assembly along with the fixture on Plummer block adaptor on test rig, Checking and Setting the run out of the hub bearing Assembly within 0.1mm. (i.e. 100 Micron), Adjusting the Radial actuator inline with the wheel centre line, Adjusting the axial actuator to dynamic tire radius (DTR) which varies from application to application, Fixing the vibration sensor, temperature sensor on non rotating part of the assembly close to the bearing for monitoring vibration and temperature, Rotating the hub assembly under no load condition to ensure proper rotation of the hub Assembly, Entering the file name to the test system, Selecting manual mode, Entering description of the test in the description cell test system, Setting the load and rpm parameter for the test, Setting rig trip level for each acquired parameters, Checking the test status indicators to be green, Running the test if indicators is green, Generating the test reports. Further method of testing wheel hub bearing validation comprises Preparing of test hub bearing assembly which comprises; checking freeness of the test hub bearings and fitment of hub assembly on fixture, checking the axial play of hub bearing with the help of dial gauge and stand for whether axial play is within the limit as prescribed in the drawings, Measuring the frictional torque in assembly, Mounting the Hub Assembly along with the fixture on Plummer block adaptor, Checking and Setting the Run Out of the Hub bearing Assembly within 0.1mm. (i.e. 100 Micron), Adjusting the Radial actuator inline with the wheel centre line, Adjusting the axial actuator to dynamic tire radius (DTR) which varies from application to application, Fixing the vibration sensor, temperature sensor on non rotating part of the assembly close to the bearing, Rotating the hub assembly under no load condition to ensure proper rotation of the hub Assembly, Entering the file name to the test system, Selecting preset mode, Selecting loading parameters; Sine wave/Square wave/Constant/Road Load data, Selecting test speed and test duration, Setting rig trip level for each acquired parameters, Checking the test status indicators to be green, Running the test if indicators is green, Generating the test reports. The foregoing description is a specific embodiment of the present invention. It should be appreciated that this embodiment is described for purpose of illustration only, and that numerous alterations and modifications may be practiced by those skilled in the art without departing from the spirit and scope of the invention. It is intended that all such modifications and alterations be included insofar as they come within the scope of the invention as claimed or the equivalents thereof. WE CLAIM 1. Biaxial wheel hub bearing validation test rig comprises; Wheel hub bearing assembly, Mounting frame for mounting said wheel hub bearing assembly, Adaptor mounted on spindle, Plummer block for housing said adaptor and supporting said spindle, Motor which is mounted on said frame, Support spindle is coupled with shaft of said motor, At least two hydraulic actuators, wherein said hydraulic actuators are Radial actuator for applying radial load to said wheel hub bearing assembly, said radial actuator is mounted from top of the frame by means of bracket that holds the radial cylinder firmly with the help of support bracket mounted on top of the bracket which slides on sliding rail provided on said bracket to adjust the said radial actuator to wheel centre line, Axial actuator for applying axial load on the wheel hub bearing assembly, said axial actuator is mounted on said frame by means of load bracket that holds the axial cylinder firmly with the help of klevis pin , said bracket having sliding arrangement which facilitates said axial actuator vertical movement to adjust the dynamic tire radius. 2. Biaxial wheel hub bearing validation test rig as claimed in claim 1, wherein said radial actuator comprises hub adopter for holding and driving the test component and is made up of tough materials. 3. Biaxial wheel hub bearing validation test rig as claimed in claims 1 to 2, wherein said radial actuator comprises radial load cell for sensing compression and tension force which is connected by radial bracket. 4. Biaxial wheel hub bearing validation test rig as claimed in claims 1 to 3, wherein said radial actuator comprises load cell adopter for transferring the accurate load coming from the said cylinder which is connecting member for said radial actuator and said radial load cell. 5. Biaxial wheel hub bearing validation test rig as claimed in claims 1 to 4, wherein said axial actuator comprises axial load cell for sensing the compression and tension force. 6. Biaxial wheel hub bearing validation test rig as claimed in claims 1 to 5, wherein said axial actuator comprises load cell adopter for connecting said axial load cell and axial actuator. 7. Biaxial wheel hub bearing validation test rig as claimed in claims 1 to 6, wherein said axial actuator is double acting cylinder has identical areas on each side of the piston and which enables powered motion in extraction and retraction thereby providing equal forces in either direction with equal displacement. 8. Method of testing wheel hub bearing validation by biaxial wheel hub bearing validation test rig comprises; Providing of test hub bearing assembly, Checking freeness of the test hub bearings and fitment of hub assembly on fixture, checking the axial play of hub bearing with the help of dial gauge for whether axial play is within the prescribed limit. Measuring the frictional torque in assembly by torque sensor, Mounting the hub bearing assembly along with the fixture on Plummer block adaptor on test rig, Checking and Setting the run out of the hub bearing Assembly, Adjusting the Radial actuator inline with the wheel centre line, Adjusting the axial actuator to dynamic tire radius (DTR) which varies from application to application, Fixing the vibration sensor, temperature sensor on non rotating part of the assembly close to the bearing for monitoring vibration and temperature, Rotating the hub assembly under no load condition to ensure proper rotation of the hub Assembly, Entering the file name to the test system, Selecting manual mode, Entering description of the test in the description cell test system, Setting the load and rpm parameter for the test, Setting rig trip level for each acquired parameters, Checking the test status indicators to be green, Running the test if indicators is green, Generating the test reports. 9. Method of testing wheel hub bearing validation by biaxial wheel hub bearing validation test rig comprises; Preparing of test hub bearing assembly, checking freeness of the test hub bearings and fitment of hub assembly on fixture, checking the axial play of hub bearing with the help of dial gauge and stand for whether axial play is within the limit as prescribed in the drawings, Measuring the frictional torque in assembly, Mounting the Hub Assembly along with the fixture on Plummer block adaptor. Checking and Setting the Run Out of the Hub bearing Assembly, Adjusting the Radial actuator inline with the wheel centre line, Adjusting the axial actuator to dynamic tire radius (DTR) which varies from application to application, Fixing the vibration sensor, temperature sensor on non rotating part of the assembly close to the bearing, Rotating the hub assembly under no load condition to ensure proper rotation of the hub Assembly, Entering the file name to the test system, Selecting preset mode, Selecting loading parameters; Sine wave/Square wave/Constant/Road Load data, Selecting test speed and test duration, Setting rig trip level for each acquired parameters, Checking the test status indicators to be green, Running the test if indicators are green, Generating the test reports. 10. Biaxial wheel hub bearing validation test rig and method of testing wheel hub bearing validation by biaxial wheel hub bearing validation test rig substantially as herein described with reference to accompanying drawings. ABSTRACT Biaxial wheel hub bearing validation test rig and method of testing thereof The present invention relates to biaxial wheel hub bearing validation test rig which comprises basically at least two hydraulic actuators, one is axial actuator for applying axial load to the wheel hub bearing assembly and another is radial actuator for applying radial load to the wheel hub bearing assembly. This test rig encompasses the endurance test requirements for "CORNERING FATIGUE TEST" for wheel hub bearings and hub bearing units of passenger cars, LCV's, HCV's,MCV's & UV's subjected to actual Road load conditions being applied on test rig. In accordance with the present invention, the load application in which radial load is applied exactly at the wheel centre line and axial load at the dynamic tire radius. With this test rig actual road load conditions like vertical, Left Cornering, Right Cornering loads which are experienced by the wheel can be applied to the wheel hub bearing assembly. This test rig has been developed to simulate the actual road load conditions with the help of axial and radial actuators. This new biaxial wheel hub bearing validation test rig is compact in construction with advanced features, ease of operation and cost effective. In accordance with this invention new method of testing the wheel hub bearing validation test rig has been developed.

Documents:

2116-MUM-2007-ABSTRACT(23-11-2011).pdf

2116-MUM-2007-ABSTRACT(GRANTED)-(28-2-2013).pdf

2116-mum-2007-abstract.doc

2116-mum-2007-abstract.pdf

2116-MUM-2007-CLAIMS(AMENDED)-(22-2-2013).pdf

2116-MUM-2007-CLAIMS(AMENDED)-(23-11-2011).pdf

2116-MUM-2007-CLAIMS(AMENDED)-(27-2-2013).pdf

2116-MUM-2007-CLAIMS(GRANTED)-(28-2-2013).pdf

2116-MUM-2007-CLAIMS(MARKED COPY)-(27-2-2013).pdf

2116-mum-2007-claims.doc

2116-mum-2007-claims.pdf

2116-mum-2007-correspondence(23-11-2007).pdf

2116-MUM-2007-CORRESPONDENCE(23-5-2012).pdf

2116-MUM-2007-CORRESPONDENCE(IPO)-(28-2-2013).pdf

2116-mum-2007-correspondence-received.pdf

2116-mum-2007-description (complete).pdf

2116-MUM-2007-DESCRIPTION(GRANTED)-(28-2-2013).pdf

2116-MUM-2007-DRAWING(22-2-2013).pdf

2116-MUM-2007-DRAWING(23-11-2011).pdf

2116-MUM-2007-DRAWING(GRANTED)-(28-2-2013).pdf

2116-mum-2007-drawings.pdf

2116-MUM-2007-FORM 1(23-11-2011).pdf

2116-MUM-2007-FORM 13(23-11-2011).pdf

2116-mum-2007-form 18(23-11-2007).pdf

2116-MUM-2007-FORM 2(GRANTED)-(28-2-2013).pdf

2116-MUM-2007-FORM 2(TITLE PAGE)-(GRANTED)-(28-2-2013).pdf

2116-mum-2007-form 8(23-11-2007).pdf

2116-mum-2007-form 9(23-11-2007).pdf

2116-mum-2007-form-1.pdf

2116-mum-2007-form-2.doc

2116-mum-2007-form-2.pdf

2116-mum-2007-form-26.pdf

2116-mum-2007-form-3.pdf

2116-MUM-2007-GENERAL POWER OF ATTORNEY(23-11-2011).pdf

2116-MUM-2007-MARKED COPY(22-2-2013).pdf

2116-MUM-2007-MARKED COPY(23-11-2011).pdf

2116-MUM-2007-REPLY TO EXAMINATION REPORT(23-11-2011).pdf

2116-MUM-2007-REPLY TO HEARING(22-2-2013).pdf

2116-MUM-2007-REPLY TO HEARING(27-2-2013).pdf

2116-MUM-2007-SPECIFICATION(AMENDED)-(23-11-2011).pdf

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