FIELD OF INVENTION:
[001] The present subject matter described herein, relates to an oil filter mounting in vehicle, and, in particular, to a spin-on type oil filter with an 5 integrated mounting stud. In more particularly, the present subject matter relates to a spin-on type oil filter which has an integrated mounting hollow cylindrical shaft for mounting the spin-on type oil filter on the engine side for filtering liquids, such as fuel, lubrication fluid, and hydraulic fluid.
BACKGROUND AND PRIOR ART: 10
[002] A spin-on type oil filter is used to remove contaminants from unfiltered oil or contaminated oil and supply clean oil to internal combustion engine. The spin-on type oil filter has an oil filtering medium which comprises a paper and synthetic filtering medium for filtering the contaminated oil.
[003] Conventional, spin-on type filter has a centrally embedded female 15 threaded portion to receive a male threaded portion, i.e., intermediate external hollow stud for mounting the spin-on type filter onto the engine mounting plate, in a well defined manner. The spin-on type oil filter is assembled and dis-assembled by rotating the filter body on the external hollow stud with a special design tool. In some vehicles where oil filter is not mounted at deep locations, the oil filter can 20 be assembled and dis-assembled by hand. But assembly and disassembly by hand is time consuming and require lot of power, this method seems to be impossible. There are some oil filters which can be screwed by hand also. Conventionally, the spin-on oil filter can be mounted in two ways either directly mounted onto the engine or by means of intermediate adaptor in case of space constraints. All the 25 existing mounting methods require an intermediate hollow external threaded stud for joining engine mounting plate to oil filter. Few examples of the same are given below.
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[004] US patent application publication US 20140217001 A1 discloses a keyed thread engagement on spin-on filter element. Fig 1 illustrates the construction of filter head with thread engagement. In the present US patent publication, the filter element has a ring of filtration media circumscribing a central axis and defining a central cavity. An annular end cap of the filter element is sealingly bonded at an 5 end of the media. The end cap includes a central opening into the central cavity, and a lateral opening spaced laterally outward from the central opening. The central opening includes a threaded connection portion to enable the element to be spun-on to a complimentarily-threaded connection portion of a filter head. The connection portion of the central opening includes at least one axially-extending 10 slot opening radially away from the connection portion. This invention discloses centrally embedded female threaded portion to receive a male threaded portion, i.e., intermediate external hollow stud for mounting the spin-on type filter with the engine mounting plate. There is also requirement of an external threaded hollow stud. Further, the present arrangement requires special tool for tightening the 15 hollow stud onto engine side.
[005] US patent application publication US 20110132829 A1 discloses a Spin-on filter with external threads for threadably securing to a filter head in the engine mounting plate. Figure 2 illustrates spin-on type filter head with external thread around the circumference of the filter. The filter arrangement for threadably 20 securing to a filter head includes a housing having a surrounding wall defining an interior volume, an open mouth providing access to the interior volume and an end opposite of the open mouth. The surrounding wall has an exterior and an interior. A sleeve, distinct from the housing, is secured to the exterior of the surrounding wall adjacent to the housing mouth and extending partially along the 25 surrounding wall. The sleeve has an exterior and an interior. The exterior of the sleeve defines mounting threads constructed and arranged to removably mount with the filter head, when the filter arrangement is secured to the filter head. The interior of the sleeve is against the exterior of the surrounding wall. A first seal member is oriented against the sleeve to create a seal with a filter head, when the 30 filter arrangement is secured to the filter head. A filter assembly includes a filter
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arrangement and a filter head. The filter arrangement is removably secured to the filter head by a threaded connection between the sleeve and the filter head. A system includes an engine utilizing a liquid and a filter assembly in fluid communication with the engine to filter the liquid. The present US patent applications solves the technical problem of seaming process by joining mounting 5 part of oil filter to the oil filter assembly. This also requires a intermediate hollow shaft.
[006] Figure 3 illustrate mounting assembly of conventional spin-on type oil filter with the engine plate. The mounting assembly 300 comprises spin-on type oil filter 301, oil filter mounting part 302, gasket 303, intermediate hollow stud 10 with external thread 304 and engine side mounting component 305. The spin-on type oil filter 301 is mounted on the engine side mounting component 305. The spin-on type oil filter 301 has central threaded female cavity to receive the male stud, i.e., intermediate hollow stud with external thread 304. . The intermediate hollow stud with external thread 304 is first tighten on the engine side mounting 15 component 305 and then the spin-on type oil filter 301 is tightened onto the engine side mounting component 305 using external threads of the intermediate hollow stud 304.
[007] There are numerous technical problems existed with mounting of the conventional spin-on type oil filter. In the conventional spin-on type oil filter 20 requires an additional part, i.e., intermediate hollow stud with external threads which increases the cost of the mounting. The intermediate hollow stud with external thread also increases the cost of mounting and un-mounting. Further a specially designed tool is required to mount the intermediate hollow stud with external threads on the engine side mounting component which increases the cost 25 and assembly time. Sometime during dis-assembly of the spin-on type oil filter for servicing purpose, the spin-on type oil filter dis-assemble along with the intermediate hollow stud which increases the time of service and cost. The requirement of intermediate hollow stud also increases the output error of mounting due to tolerance in each part. The tolerance of each part added with each 30
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other and final assembly has combined tolerance which became an assembly issues. The tolerance issues create high rejection of parts, specifically, the intermediate hollow stud. Further, the conventional spin-on type oil filter has central inner thread in which intermediate hollow stud is fitted with reduces the volume of the filtered oil which creates problem in cold start of the internal 5 combustion engine. Furthermore, the intermediate hollow stud with external threads has small filtered oil passage area which drops the oil pressure and ultimately reduces efficiency of the oil pump.
[008] In view of the above, it is beneficial to have a spin-on type oil filter that eliminates the requirement of intermediate hollow stud from the oil filter 10 mounting and improve the filter oil pressure. Therefore, there is a need in the art to provide a structure of the spin-on type oil filter that is more simple and inexpensive, and which can be placed in the existing vehicle to reduce the existing above mentioned problems. None of the references as mentioned above teach the novel construction of spin-on type oil filter set forth hereinafter and defined as 15 spin-on type oil filter with integrated mounting stud. Neither do they provide the benefits and advantages associated therewith the following proposed embodiment. Whereas the previous inventions all have limited applications, as will become obvious from the figures and detailed description below, the present invention will have broad applications. 20
OBJECTS OF THE INVENTION:
[009] The principal object of the present invention is to provide a spin-on type oil filter with integrated mounting hollow cylindrical shaft.
[0010] Another object of the present subject matter is to provide an integrated hollow mounting hollow cylindrical shaft in central axis of the spin-on type oil 25 filter that can be mounted onto internal thread of the engine side mounting component.
[0011] Another object of the present subject matter is to provide an integrated hollow mounting hollow cylindrical shaft with external thread on open part.
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[0012] Another object of the present subject matter is to reduce the pressure drop of the filtered oil in the spin-on type oil filter.
[0013] Another object of the present subject matter is to reduce the rejection of mounting parts of the spin-on type oil filter.
[0014] Another object of the present subject matter is to reduce assembly and dis-5 assembly time of the spin-on type oil filter onto the engine side mounting component.
[0015] Yet another object of the present invention is to provide a spin-on type oil filter with integrated mounting hollow cylindrical shaft which is simple and inexpensive, and easily mounted on the engine side mounting component. 10
SUMMARY OF THE INVENTION:
[0016] The subject matter disclosed herein relates to a spin-on type oil filter having arrangement for mounting and un-mounting from vehicle engine. The spin-on type oil filter has an elongated cylindrical housing having closed bottom portion and open-able top portion. Further, a base plate is provided on the top 15 portion of the elongated cylindrical housing. On central axis of the base plate, a hollow cylindrical shaft is integrated for passage of filtered oil. The hollow cylindrical shaft has an extended portion which extends radially outward along the central axis of the base plate. The extended portion of the hollow cylindrical shaft has external threads to get engage with engine side mounting component. The 20 elongated cylindrical housing has filter element that is provided along inner circumference of the elongated cylindrical housing. Further, a cylindrical inner cavity is present inside the elongated cylindrical housing to receive the filtered oil from the filter element. The filter element receives unfiltered oil from a plurality of holes present on the base plate. The filter element filters the unfiltered oil and 25 sends the filtered oil to the cylindrical inner cavity. The cylindrical inner cavity is in-line with the hollow cylindrical shaft to allow passage of filtered oil to internal combustion engine. Once the spin-on type oil filter is mounted on the engine side mounting component via the hollow cylindrical shaft, an oil tight assembly is
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formed which allows unfiltered oil to enter into the spin-on type oil filter through a plurality of holes of the base plate. The unfiltered oil is filtered by the filter element and the filtered oil goes to inner center cylindrical cavity for passage to the internal combustion engine. Due to integrated hollow cylindrical shaft, there is no need for a special tool to mount the spin-on type oil filter onto the engine side 5 mounting component.
[0017] In order to further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit scope of the present subject matter. 10
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. The detailed description is described with reference to the 15 accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods in accordance with embodiments of the present subject matter are now described, by way of example, 20 and with reference to the accompanying figures, in which:
[0019] Fig. 1 illustrates existing spin-on type oil filter as known in the art;
[0020] Fig. 2 illustrates existing spin-on type oil filter as known in the art;
[0021] Fig. 3 illustrates assembly of conventional spin-on type oil filter onto engine side mounting component as known in the art; 25
[0022] Fig. 4 illustrates structure of spin-on type oil filter with integrated mounting stud, in accordance with an embodiment of the present subject matter;
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[0023] Fig. 5 illustrate side view of the spin-on type oil filter with integrated mounting hollow cylindrical shaft, in accordance with an embodiment of the present subject matter;
[0024] Fig. 6 illustrates cross section view of the spin-on type oil filter with integrated mounting hollow cylindrical shaft, in accordance with an embodiment 5 of the present subject matter;
[0025] Fig. 7 illustrates top view of the spin-on type oil filter with integrated mounting stud, in accordance with an embodiment of the present subject matter; and
[0026] Fig. 8 illustrates assembly/mounting of the spin-on type oil filter with 10 integrated mounting hollow cylindrical shaft with engine side mounting component, in accordance with an embodiment of the present subject matter; and
[0027] Fig. 9 illustrates cross section view of the assembly/mounting of the spin-on type oil filter with integrated mounting hollow cylindrical shaft with engine side mounting component, in accordance with an embodiment of the present 15 subject matter.
[0028] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles 20 of the disclosure described herein.
DESCRIPTION OF THE PREFERRED EMBODIMENTS:
[0029] The subject matter disclosed herein relates to a spin-on type oil filter having arrangement for mounting and un-mounting from vehicle engine. The spin-on type oil filter has an elongated cylindrical housing having closed bottom 25 portion and open-able top portion. Further, a base plate is provided on the top portion of the elongated cylindrical housing. On central axis of the base plate, a hollow cylindrical shaft is integrated for passage of filtered oil. The hollow cylindrical shaft has an extended portion which extends radially outward along the
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central axis of the base plate. The extended portion of the hollow cylindrical shaft has external threads to get engage with engine side mounting component. The elongated cylindrical housing has filter element that is provided along inner circumference of the elongated cylindrical housing. Further, a cylindrical inner cavity is present inside the elongated cylindrical housing to receive the filtered oil 5 from the filter element. The filter element receives unfiltered oil from a plurality of holes present on the base plate. The filter element filters the unfiltered oil and sends the filtered oil to the cylindrical inner cavity. The cylindrical inner cavity is in-line with the hollow cylindrical shaft to allow passage of filtered oil to internal combustion engine. Once the spin-on type oil filter is mounted on the engine side 10 mounting component via the hollow cylindrical shaft, an oil tight assembly is formed which allows unfiltered oil to enter into the spin-on type oil filter through a plurality of holes of the base plate. The unfiltered oil is filtered by the filter element and the filtered oil goes to inner center cylindrical cavity for passage to the internal combustion engine. Due to integrated hollow cylindrical shaft, there is 15 no need for a special tool to mount the spin-on type oil filter onto the engine side mounting component.
[0030] It should be noted that the description and figures merely illustrate the principles of the present subject matter. It should be appreciated by those skilled in the art that conception and specific embodiment disclosed may be readily 20 utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present subject matter. It should also be appreciated by those skilled in the art that by devising various arrangements that, although not explicitly described or shown herein, embody the principles of the present subject matter and are included within its spirit and scope. Furthermore, all examples 25 recited herein are principally intended expressly to be for pedagogical purposes to aid the reader in understanding the principles of the present subject matter and the concepts contributed by the inventor(s) to furthering the art, and are to be construed as being without limitation to such specifically recited examples and conditions. The novel features which are believed to be characteristic of the 30 present subject matter, both as to its organization and method of operation,
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together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures.
[0031] These and other advantages of the present subject matter would be described in greater detail with reference to the following figures. It should be 5 noted that the description merely illustrates the principles of the present subject matter. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described herein, embody the principles of the present subject matter and are included within its scope.
[0032] Fig. 4 illustrates structure of spin-on type oil filter with integrated hollow 10 cylindrical shaft, in accordance with an embodiment of the present subject matter. The spin-on type oil filter 400 has an elongated cylindrical housing 401 and a base plate 402 with integrated mounting hollow cylindrical shaft 404. The elongated cylindrical housing 401 has closed bottom portion 401a. The base plate 402 is fixed on the top portion 401b of the elongated cylindrical housing 401. The base 15 plate 402 is joined to cylindrical housing 401 by seam joint. The filter assembly 400 can be replaced at the time of servicing. The base plate 402 has a gasket 403 for preventing the engine oil from spilling out. The base plate 402 has a plurality of holes 408 on surface. The unfiltered oil from the internal combustion engine enters into the spin-on type oil filter 400 through the plurality of holes 408. The 20 elongated cylindrical housing 401 filters the unfiltered oil and passes the filtered oil to the hollow cylindrical shaft 404. The hollow cylindrical shaft 404 allows passage of filtered oil to the internal combustion engine.
[0033] The hollow cylindrical shaft 404 is integrated with the base plate 402. The hollow cylindrical shaft 404 is molded with the base plate 402 at the time of 25 molding. The hollow cylindrical shaft 404 in-line with the central axis of the base plate 402 and the oil filter 400 for passage of filtered oil. The hollow cylindrical shaft 404 has an extended portion 404a which extends radially outward along the central axis of the base plate 402. The extended portion 404a of the hollow
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cylindrical shaft 404 has external threads 404b to get engage with internal threads of engine side mounting component.
[0034] Figure 5 shows the side view of the spin-on type oil filter 400. Figure 6 illustrates the cross section view of the spin-on type oil filter with integrated hollow cylindrical shaft, in accordance with an embodiment of the present subject 5 matter. The spin-on type oil filter 400 has integrated hollow cylindrical shaft 404 for mounting and passage of filtered oil. The elongated cylindrical housing 401 has filter element 405 which is provided around the inner circumference of the elongated cylindrical housing 401. The filter element 405 can be made of filter paper and synthetic filter material. The filter element 405 is supported by base 10 cover 406 at bottom. Further, the complete filter element 405 is placed on bottom spring 407. The filtered oil by the filter element 405 is stored in an inner center cylindrical cavity 410 which is centrally in-line with the center axis of the hollow cylindrical shaft 404. Upon the pressure from the unfiltered oil through oil pump, the filtered oil is pushed in the hollow cylindrical shaft 404 and moves to the 15 internal combustion engine.
[0035] The filter element 405 surrounds the inner center cylindrical cavity 410 of the elongated cylindrical housing 401 to receive the filtered oil from the filter element 405. The filter element 405 receives unfiltered oil from a plurality of holes 408 present on the base plate 402. The filter element 405 filters the 20 unfiltered oil and sends the filtered oil to the inner center cylindrical cavity 410. The inner center cylindrical cavity 410 is in-line with center axis of the hollow cylindrical shaft 404 to allow passage of filtered oil to internal combustion engine with lesser pressure drop and resistance as compared to conventional design as shown in fig 3. Once the spin-on type oil filter is mounted on the engine side 25 mounting component via the hollow cylindrical shaft 404, an oil tight assembly is formed which allows unfiltered oil to enter into the spin-on type oil filter 400 through a plurality of holes 408 of the base plate 408. The unfiltered oil is filtered by the filter element 405 and the filtered oil goes to inner center cylindrical cavity 410 for passage to the internal combustion engine. Due to integrated hollow 30
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cylindrical shaft, there is no need for a special tool to mount intermediate mounting stud 304 onto the engine side mounting component.
[0036] Figure 7 illustrates the top view of the spin-on type oil filter with integrated hollow cylindrical shaft, in accordance with an embodiment of the present subject matter. The base place 402 has a plurality of holes 408 to receive 5 unfiltered oil from the internal combustion engine through oil pump. Further, the unfiltered oil is filtered by the filter element 405 present inside the elongated cylindrical housing 401. The filtered oil is pushed from the inner center cylindrical cavity 410 to the internal combustion engine through the hollow cylindrical shaft 404 which is in-line with central axis of the inner center 10 cylindrical cavity 410 by pressure created by the oil pump. Due to the integrated hollow cylindrical shaft 404 filter oil passage area is more which reduces the pressure drop of the oil pump. Due to reduction in pressure drop, the oil pump works with better efficiency. Another advantage of having big passage area is that the engine gets more volume of filtered oil which helps in the cold start of the 15 engine.
[0037] Fig. 8 illustrates assembly/mounting of the spin-on type oil filter with integrated mounting stud/ hollow cylindrical shaft with engine side mounting component, in accordance with an embodiment of the present subject matter. The assembly of spin-on type oil filter with integrated mounting hollow cylindrical 20 shaft 801 onto engine side component 802. The spin-on type oil filter 801 has a gasket 803 for air tight assembly.
[0038] Fig. 9 illustrates cross section view of the assembly/mounting of the spin-on type oil filter with integrated mounting stud/hollow cylindrical shaft with engine side mounting component, in accordance with an embodiment of the 25 present subject matter. The spin-on type oil filter 801 having filter element and integrated hollow cylindrical shaft 804 at central axis 806 of the spin-on type oil filter 801. The hollow cylindrical shaft 804 has extended portion which has external threads for screwing with internal threads 805 of the engine side mounting component 802. The external threads of the hollow cylindrical shaft 804 30
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screwed with the internal threads 805 of the engine side component 802 either by way of hand or by means of tool. The gasket 803 provides air tight assembly for the spin-on type oil filter.
[0039] The present spin-on type oil filter has integrated mounting hollow cylindrical shaft for passage of filtered oil from the filter. There is no intermediate 5 shaft for mounting the spin-on type oil filter onto the engine side component. Therefore, the present spin-on type oil filter with integrated mounting hollow cylindrical shaft eliminates the requirement of intermediate mounting stud and saves the cost. Further, there tolerance in two parts, i.e., in mounting hollow cylindrical shaft and the internal threads of the engine side component, therefore 10 there is less number of rejections in the parts. The present spin-on type oil filter with integrated mounting hollow cylindrical shaft provides more area for passage of filtered oil and thus there is less pressure drop in oil. Resultantly, efficiency of the oil pump and engine increases. The present spin-on type oil filter with integrated mounting hollow cylindrical shaft is simple in construction and cost 15 effective. Due to integrated mounting hollow cylindrical shaft saves the assembly and dis-assembly time of the oil filter in the engine side mounting component. Further, there is no requirement of a special tool to mount thehollow cylindrical shaft.
[0040] The term “vehicle” as used throughout this detailed description and in the 20 claims refers to any moving vehicle that is capable of carrying one or more human occupants and is powered by any form of energy. The term “vehicle” is a motor vehicle which includes, but is not limited to: cars, trucks, vans, minivans, hatchback, sedan, MUVs, and SUVs, stationary engine, Ex Generator Set, Borewell Engine etc. 25
[0041] It will be further appreciated that functions or structures of a plurality of components or steps may be combined into a single component or step, or the functions or structures of one-step or component may be split among plural steps or components. The present invention contemplates all of these combinations. Unless stated otherwise, dimensions and geometries of the various structures 30
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depicted herein are not intended to be restrictive of the invention, and other dimensions or geometries are possible. In addition, while a feature of the present invention may have been described in the context of only one of the illustrated embodiments, such feature may be combined with one or more other features of other embodiments, for any given application. It will also be appreciated from the 5 above that the fabrication of the unique structures herein and the operation thereof also constitute methods in accordance with the present invention. The present invention also encompasses intermediate and end products resulting from the practice of the methods herein. The use of “comprising” or “including” also contemplates embodiments that “consist essentially of” or “consist of” the recited 10 feature.
[0042] Although embodiments for the present subject matter have been described in language specific to structural features, it is to be understood that the present subject matter is not necessarily limited to the specific features described. Rather, the specific features and methods are disclosed as embodiments for the present 15 subject matter. Numerous modifications and adaptations of the system/component of the present invention will be apparent to those skilled in the art, and thus it is intended by the appended claims to cover all such modifications and adaptations which fall within the scope of the present subject matter.

We claim:
1. A spin-on type oil filter (400) having arrangement for mounting and un-mounting from vehicle engine/stationary engine, the spin-on type oil filter (400) comprising:
an elongated cylindrical housing (401) having closed bottom portion 5 (401a);
a base plate (402) is provided on top portion (401b) of the elongated cylindrical housing (401);
characterized in that
a hollow cylindrical shaft (404) is integrated with central axis of the 10 base plate (402) for passage of filtered oil.
2. The spin-on type oil filter (400) as claimed in claim 1, wherein the hollow cylindrical shaft (404) extends radially outward along the central axis of the base plate (402). 15
3. The spin-on type oil filter (400) as claimed in claim 1, wherein extending portion (404a) of the hollow cylindrical shaft (404) has external threads (404b).
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4. The spin-on type oil filter (400) as claimed in claim 1, wherein the hollow cylindrical shaft (404) is molded in the central axis of the base plate (402).
5. The spin-on type oil filter (400) as claimed in claim 1, wherein the base plate (402) has a plurality of holes (408) to receive contaminated or 25 unfiltered oil.
6. The spin-on type oil filter (400) as claimed in claim 1, wherein the elongated cylindrical housing (401) has filter element (405) along inner circumference to filter unfiltered oil. 30
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7. The spin-on type oil filter (400) as claimed in claim 1, wherein the elongated cylindrical housing (401) has inner center cylindrical cavity (410) to receive filter oil from the filter element (405), the inner center cylindrical cavity (410) is in-lined with the hollow cylindrical shaft (404) for passage of filtered oil. 5
8. The spin-on type oil filter (400) as claimed in claim 1, wherein extended portion (404a) of the hollow cylindrical shaft (404) removably engages with engine side mounting component (802).
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9. The spin-on type oil filter (400) as claimed in claim 1, wherein the spin-on type oil filter (400) is mounted on engine side mounting component (802) via the hollow cylindrical shaft (404) and forms an oil tight assembly which allows unfiltered oil to enter into the spin-on type oil filter (400) through a 15 plurality of holes (408) on the base plate (402) and filtered oil passage to the hollow cylindrical shaft (404).