FORM -2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE
Specification
(See Section 10; rule 13) ONE PIECE OIL LOCK COLLAR
ENDURANCE TECHNOLOGIES LTD.
an Indian Company of E-93,Waluj,MIDC, Aurangabad-431 136, Maharashtra, India.
INVENTOR: PIMPLE, VISHAL
The following specification particularly describes the invention and the manner in
which it is to be performed.

FIELD OF THE DISCLOSURE
The present disclosure generally relates to two wheeler vehicles.
Particularly, the present disclosure relates to oil lock collars of a front fork of two wheeler vehicles.
BACKGROUND
A front fork of a vehicle, such as a motorcycle, connects a vehicle's front wheel to its frame structure. A front fork typically includes a front suspension and a front brake. A front fork of a two wheeler vehicle is connected to a handlebar for enabling steering of the two wheeler vehicle. Generally, an oil lock collar is used to hold different valving parts of a front fork to achieve desired damping force value. Generally, the conventional oil lock collars are manufactured of CEW/ EN1A or equivalent material.
Although, the conventional oil lock collars are useful for holding different valving parts of the front fork to achieve desired damping force value. The conventional oil lock collars have numerous limitations. For example, the conventional oil lock collars require a separate valve retainer to hold different valving parts of a front fork. Further, the conventional oil lock collars are manufactured by machining a plain tube and hence need higher thickness. Furthermore, the conventional oil lock collars require a large number of parts. Accordingly, assembly of these parts requires a skilled person. Moreover, use of the convention oil lock collars increase cost of a front fork.
Accordingly, there is need of an oil lock collar that eliminates use of a separate valve retainer to hold different valving parts of a front fork. Also, there is need of an oil lock collar that has comparatively less thickness. Further, there is need of an oil lock collar

that comparatively decreases the cost of a front fork. Furthermore, there is need of an oil lock collar that reduces inventory of parts.
OBJECTS
Some of the objects of the system of the present disclosure, which at least one embodiment herein satisfies, are as follows:
It is an object of the system of the present disclosure to ameliorate one or more problems of the prior art or to at least provide a useful alternative.
An object of the system of the present disclosure is to provide an oil lock collar that eliminates use of a separate valve retainer to hold different valving parts of a front fork.
Another object of the system of the present disclosure is to provide an oil lock collar that has comparatively less thickness.
Additionally, an object of the system of the present disclosure is to provide an oil lock collar that comparatively decreases the cost of a front fork.
Moreover, an object of the system of the present disclosure is to provide an oil lock collar that reduces inventory of parts.
Furthermore, an object of the system of the present disclosure is to provide an oil lock collar that is light in weight.
Also, an object of the system of the present disclosure is to provide an oil lock collar that increases productivity by reduction of number of parts and ease of stage wise operation.

Additionally, an object of the system of the present disclosure is to provide an oil lock collar that reduces assembly skill requirement.
Other objects and advantages of the system of the present disclosure will be more apparent from the following description when read in conjunction with the accompanying figures which are not intended to limit the scope of the present disclosure.
SUMMARY
In accordance with one aspect of the present disclosure, a front fork assembly for a two wheeler vehicle is disclosed. The front fork assembly includes a pair of fork pipe subassemblies. Each of the pair of fork pipe sub-assemblies includes a fork pipe, a one piece oil lock collar and a valve seat. The one piece oil lock collar is configured to incorporate structural and functional configuration of a valve retainer and adapted to hold different valving parts of the front fork assembly. The one piece oil lock collar is adapted to be disposed within the fork pipe. The valve seat is adapted to be disposed within the one piece oil lock collar.
Typically, the front fork assembly includes a washer.
In one embodiment, the one piece oil lock collar is manufactured by a press work operation followed by machining operation.
In another aspect of the present disclosure, a one piece oil lock collar for a front fork assembly is disclosed. The one piece oil lock collar is configured to incorporate structural and functional configuration of a valve retainer and adapted to hold different valving parts of the front fork assembly.

BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS
The disclosure will now be explained in relation to the non-limiting accompanying drawings, in which:
Figure la illustrates a top view of a conventional front fork assembly;
Figure lb illustrates a sectional view of a fork pipe sub-assembly of the conventional front fork assembly of Figure la;
Figure 1 c illustrates an enlarged cross-sectional view of selected "A" portion of the fork pipe sub-assembly of Figure lb depicting a conventional oil lock collar in conjunction with a valve retainer;
Figure Id illustrates an exploded view of the fork pipe sub-assembly of Figure lc depicting a conventional oil lock collar along with a valve retainer;
Figure 2a illustrates a top view of a front fork assembly, in accordance with one embodiment of the present disclosure;
Figure 2b illustrates a sectional view of a fork pipe sub-assembly of the front fork assembly of Figure 2a;
Figure 2c illustrates an enlarged cross-sectional view of selected "B" portion of the fork pipe sub-assembly of Figure 2b depicting a one piece oil lock collar of the present disclosure, in accordance with one embodiment of the present disclosure;
Figure 2d illustrates an exploded view of the fork pipe sub-assembly of Figure 2c depicting the one piece oil lock collar;

Figure 2e illustrates a sectional view of the one piece oil collar of Figure 2d; and Figures 3a and 3b illustrate one piece oil collar specimens used for test analysis.
DETAILED DESCRIPTION
The present disclosure will now be described with reference to the accompanying drawings which do not limit the scope and ambit of the disclosure. The description provided is purely by way of example and illustration.
The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
The description hereinafter, of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of. preferred embodiments, those

skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
Referring to Figures la to Id, a conventional front fork assembly 10 includes a pair of fork pipe sub-assemblies 15. Each of the pair of fork pipe sub-assemblies 15 includes a conventional oil lock collar 20 (shown in Figures lc and Id), a valve retainer 30 (shown in Figures lc and Id), a leaf spring 40 (shown in Figures lc and Id), a valve seat 50 (shown in Figures lc and Id) and a fork pipe 60 (shown in Figures lc and Id). The conventional oil lock collar 20 requires the valve retainer 30 to hold different valving parts of the front fork assembly 10 to achieve desired damping force value. The conventional oil lock collar 20 is manufactured of CEW/ EN1A or equivalent material.
Although, the conventional oil lock collar 20 is useful for holding different valving parts of the front fork assembly 10 to achieve the desired damping force value, the conventional oil lock collar 20 has numerous limitations. For example, the conventional oil lock collar 20 requires the valve retainer 30 to hold different valving parts of the front fork. Further, the conventional oil lock collar 20 is manufactured by machining a plain tube and hence needs higher thickness. Furthermore, as the conventional oil lock collar 20 uses comparatively more number of parts, assembly of these parts requires a skilled person. Moreover, use of the convention oil lock collar 20 increases the cost of the front fork assembly 10.
Accordingly, to obviate the disadvantages and the limitations of the conventional oil lock collar 20, a one piece oil lock collar 200 in accordance with one embodiment, is disclosed in Figures 2a to 2e.
Figures 2a to 3b illustrates a front fork assembly 100 of the present disclosure. The front fork assembly 100 includes a pair of fork pipe sub-assemblies 300. Each of the pair of fork pipe sub-assemblies 300 includes a one piece oil lock collar 200 (shown in Figures 2c to 2e), a

washer 400 (shown in Figures 2c and 2d), a valve seat 500 (shown in Figures 2c and 2d) and a fork pipe 600 (shown in Figures 2c and 2d).
In one embodiment, the one piece oil lock collar 200 is manufactured by a press work operation followed by post machining for having optimum thickness of tube against regular higher thickness tube, resulting in weight reduction and lower cost. In one embodiment of, the one piece oil lock collar 200 of the present disclosure reduces the weight about 50% as compared to the conventional oil lock collar 20 and thereby reduces the cost of material used for manufacturing the one piece oil lock collar 200.
The one piece oil lock collar 200 is configured in such a way that there is no need for a separate valve retainer as the structural and functional configuration of the valve retainer is incorporated in the one piece oil lock collar 200 itself to make a one piece oil lock collar 200 resulting in the elimination of the use of the valve retainer. Accordingly, the one piece oil lock collar 200 of the present disclosure eliminates the use of one part i.e. a valve retainer in its manufacturing process. Further, as the one piece oil lock collar 200 of the present disclosure, reduces the number of parts and thereby reduces the inventory of parts, the one piece oil lock collar 200 of the present disclosure is value engineered and reduces assembly skill requirement.
Further, the one piece oil collar 200 is easy to wash and store. Accordingly, the one piece oil collar 200 reduces the cost of washing and storage. Moreover, the one piece oil cooler 200 increases productivity by reduction of parts for assembly and ease of stage wise operation.
Test Analysis (Referring to Figures 3a to 3b) L
(a) Purpose of Test: Validation of One piece oil lock collar VA / VE project
(By machine rout sample)

(b) Application: - CT 100 BLACK FRONT FORK
(c) ETL Part No: - F800119907
(d) Test Request by: - R&D
(e) Test Request No: - VR00552

2. Ref./ Standard: EES-0 16
3. Test Conditions: As per EES-016

Temperature range: 50°C - 70°C
Mounting Angle: 27°C
Drum Dia: 1300mm
Duration: 100 Hrs
Quantity: 01 Set
Cam Profile Specification: Sine Cam height 30mmx2 and 20mmx2 alternatively
RPM: 120
4. Acceptance Criteria:
Observe the test and record the visual observation for leakage, Breakage and rubbing of any parts. Change in Damping force after test shall be +20%.
5. Daily observation check sheet in: FT/R&D/27
(a) Test started on: 18/08/2011
(b) Test completed on: 26/08/2011

6. Test Result:

SAMPLE NO OBSERVATIONS
LH-VS6015 Observed no Leakage, no breakage, no cracks and
rubbing marks on fork - Test completed 100 HRS
RH-VS6014 Observed no Leakage, no breakage, no cracks and
rubbing marks on fork - Test completed 100 HRS

Damping Force (Kgf) LH-VS6015 RH-VS6014

Tension @ 0,3 m/s Tension @ 0.3 m/s
Before 9.2 14.3
Cam Drum Test
After 9.7 14.9
Cam Drum Test
Variation in 5.1 4.7
DF values after
test (%)

FRICTION TEST OBSERVATIONS
SAMPLE NO VELOCITY STROKE BEFORE TEST (Kgf) AFTER TEST
(Kgf)
LH-VS6015& I 0.02m/s 65mm 28.1 17.0
-VS6014

7. Conclusion:
- Observed no leakage, breakage and rubbing marks on fork
- One piece Oil lock collar appeared normal, there was no failure observed.
CT 100 black Application one piece Oil lock collar VA/VE project has PASSED the subjected Test successfully.
TECHNICAL ADVANCEMENTS AND ECONOMICAL SIGNIFICANCE
The technical advancements offered by the system of the present disclosure which add to the economic significance of the disclosure include the realization of:
• a one piece oil lock collar that eliminates requirement of a separate valve retainer to hold different valving parts of a front fork;
• a one piece oil lock collar that has comparatively less thickness and thereby reduces the cost of material;
• a one piece oil lock collar that decreases the cost of a front fork;
• a one piece oil lock collar that reduces inventory of parts;
• a one piece oil lock collar that is light in weight;
• a one piece oil lock collar that is easy to wash and storage and thereby reduces washing and storage cost;

• a one piece oil lock collar that increases productivity by reduction of parts and ease of stage wise operation; and
• a one oil lock collar that reduces assembly skill requirement.
Throughout this specification the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element, integer or step, or group of elements, integers or steps, but not the exclusion of any other element, integer or step, or group of elements, integers or steps.
The use of the expression "at least" or "at least one" suggests the use of one or more elements or ingredients or quantities, as the use may be in the embodiment to achieve one or more of the desired objects or results.
Any discussion of documents, acts, materials, devices, articles or the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters form part of the prior art base or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application.
The numerical values mentioned for the various physical parameters, dimensions or quantities are only approximations and it is envisaged that the values higher/lower than the numerical values assigned to the parameters, dimensions or quantities fall within the scope of the disclosure, unless there is a statement in the specification specific to the contrary.

We claim:
1. A front fork assembly for a two wheeler vehicle, said front fork assembly
comprising:
• a pair of fork pipe sub-assemblies, wherein each of said pair of fork pipe sub-assemblies comprises:
• a fork pipe;
• a one piece oil lock collar configured to incorporate structural and functional configuration of a valve retainer and adapted to hold different valving parts of said front fork assembly to achieve predetermined damping force value, wherein said one piece oil lock collar being adapted to be disposed within said fork pipe; and
• a valve seat adapted to be disposed within said one piece oil lock collar.

2. The front fork assembly as claimed in claim 1, further comprising a washer.
3. The front fork assembly as claimed in claim 1, wherein said one piece oil lock collar is manufactured by a press work operation followed by machining operation.
4. A one piece oil lock collar for a front fork assembly, said one piece oil lock collar being configured to incorporate structural and functional configuration of a valve retainer and adapted to hold different valving parts of said front fork assembly to achieve predetermined damping force value.