US4846592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling bearing
Assignee: NTN Corp
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Filing: 1988-04-19
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Granted: 1989-07-11
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Expires: 2008-04-19
Abstract
Abstract An annular oil filter for covering an open end of a rolling bearing has its outer edge held between two annular retainer plates, the outer edges of which are held by a rubber mold to unite them into one body. The rubber mold is resiliently received in an annular groove formed in the inner wall of an outer ring at its end. The oil filter has its inner edge in contact with a shoulder formed on the outer wall of an inner ring.
Inventors
- 👤 Yukihisa Tsumori
- 👤 Takayasu Takubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:34
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/78; F16C33/784; F16C33/7843; F16C33/7853; F16C33/30; F16C33/66; F16C33/6637; F16C33/6659; F16C33/667; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C2361/00; F16C2361/61; Y; Y10; Y10S; Y10S277/00; Y10S277/918
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
248 words
An oil filter assembly for a roller bearing assembly comprising: an outer ring having a relatively wide annular groove; an inner ring positioned within said outer ring and holding a plurality of roller bearings therebetween, said inner ring having a shoulder at one side thereof substantially corresponding to said wide annular groove, a distance between a central axis of said roller bearings and a center of said shoulder being longer than a distance between said central axis of said roller bearings and a central axis of said wide annular groove; an annular oil filter plate covering an annular side clearance between said outer and inner rings; an annular retainer plate means for retaining an outer periphery of said annular oil filter plate, said annular retainer plate means having a pair of plates, one of said plates having a bent outer peripheral edge having a cross-section of substantially L-shape such that said bent outer periphery edge overlaps upon an outer peripheral edge of the other plate; and an annular rubber mold means for retaining said annular retainer plate means and said annular oil filter plate, said annular rubber mold means having an annular groove at an inner periphery thereof for inserting said annular retainer plate means and said annular oil filter plate therein and further having an annular projection at an outer periphery thereof for sealingly engaging with said wide annular groove of said outer ring, wherein an inner periphery of said oil filter sealingly contacts with said shoulder.
Claim 2
Dependent Claim
248 words
An oil filter assembly for a roller bearing assembly comprising: an outer ring having a relatively wide annular groove; an inner ring positioned within said outer ring and holding a plurality of roller bearings therebetween, said inner ring having a shoulder at one side thereof substantially corresponding to said wide annular groove, a distance between a central axis of said roller bearings and a center of said shoulder being longer than a distance between said central axis of said roller bearings and a central axis of said wide annular groove; an annular oil filter plate covering an annular side clearance between said outer and inner rings; an annular retainer plate means for retaining an outer periphery of said annular oil filter plate, said annular retainer plate means having a pair of plates, one of said plates having a bent outer peripheral edge having a cross-section of substantially L-shape such that said bent outer periphery edge overlaps upon an outer peripheral edge of the other plate; and an annular rubber mold means for retaining said annular retainer plate means and said annular oil filter plate, said annular rubber mold means having an annular groove at an inner periphery thereof for inserting said annular retainer plate means and said annular oil filter plate therein and further having an annular projection at an outer periphery thereof for sealingly engaging with said wide annular groove of said outer ring, wherein an inner periphery of said oil filter sealingly contacts with said shoulder.
Claim 3
Dependent Claim
27 words
The oil filter assembly for a roller bearing assembly according to claim 1, wherein said annular oil filter plate is a cloth made of high-molecular organic fibers.
Claim 4
Dependent Claim
36 words
The oil filter assembly for a roller bearing assembly according to claim 2, wherein said cloth has a mesh size such that said cloth allows permeation of fine dusts having particular size smaller than 50-70 microns.
Claim 5
Dependent Claim
47 words
The oil filter assembly for a roller bearing assembly according to claim 2, wherein said annular projection of said annular rubber mold means has a circular cross-section, and further wherein a radius of curvature of said circular cross-section is longer than that of said wide annular groove.
Claim 6
Dependent Claim
27 words
The oil filter assembly for a roller bearing assembly according to claim 1, wherein said annular oil filter plate is a cloth made of high-molecular inorganic fibers.
Claim 7
Dependent Claim
36 words
The oil filter assembly for a roller bearing assembly according to claim 5, wherein said cloth has a mesh size such that said cloth allows permeation of fine dusts having particular size smaller than 50-70 microns.
Claim 8
Dependent Claim
47 words
The oil filter assembly for a roller bearing assembly according to claim 5, wherein said annular projection of said annular rubber mold means has a circular cross-section, and further wherein a radius of curvature of said circular cross-section is longer than that of said wide annular groove.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |