Patent US4186323A successfully refreshed from Google Patents.
US3582166A
Expired / Lapsed
US
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Bearing having low-friction fibrous surface and method for making same
Assignee: Lear Siegler Inc
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Filing: 1969-06-06
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Granted: 1971-06-01
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Expires: 1989-06-06
Abstract
Abstract This invention comprehends a bearing having a low friction surface formed of fibers of a low-friction resin, preferably polytetrafluorethylene, in a hard resin matrix, the longitudinal axes of substantially all of the fibers extending substantially parallel to the surface of the bearing.
Inventors
- 👤 Paul J Reising
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:21
CPC Classifications
F; F16; F16C; F16C23/00; F16C23/02; F16C23/04; F16C23/043; F16C23/045; F16C33/00; F16C33/02; F16C33/04; F16C33/18; F16C33/20; F16C33/201; F16C2208/00; F16C2208/80; F16C2208/90
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
44 words
A bearing element having a low-friction slide surface comprising fibers of low-friction resin embedded in a matrix of hard resin, substantially all of said fibers extending substantially parallel to said low-friction surface and said fibers being in noninterlocked relationship with respect to each other.
Claim 2
Dependent Claim
44 words
A bearing element having a low-friction slide surface comprising fibers of low-friction resin embedded in a matrix of hard resin, substantially all of said fibers extending substantially parallel to said low-friction surface and said fibers being in noninterlocked relationship with respect to each other.
Claim 3
Dependent Claim
22 words
A bearing element as set forth in claim 1 wherein some of said fibers are at angles to other of said fibers.
Claim 4
Dependent Claim
22 words
A bearing element as set forth in claim 1 wherein said fibers are in random angular orientation with respect to each other.
Claim 5
Dependent Claim
23 words
A bearing element as set forth in claim 1 wherein said fibers are polytetrafluorethylene and said resin matrix is a heat-cured thermosetting resin.
Claim 6
Dependent Claim
37 words
A bearing element as set forth in claim 1 wherein said fibers are arranged in bundles of parallel fibers, some of said bundles of parallel fibers being at angles to other of said bundles of parallel fibers.
Claim 7
Dependent Claim
22 words
A bearing element as set forth in claim 1 wherein substantially all of said fibers are at least one-fourth inch in length.
Claim 8
Dependent Claim
31 words
A bearing element as set forth in claim 4 wherein said polytetrafluorethylene fibers are etched to provide a roughened surface thereby to increase the bond strength thereof to said resin matrix.
Claim 9
Dependent Claim
71 words
A bearing comprising two bearing elements having surfaces in mated slidable engagement with each other, the surface of at least one of said elements comprising fibers of a relatively soft resin having good inherent lubricity embedded in a matrix of a relatively hard resin having less inherent lubricity, substantially all of said fibers being substantially parallel to said surface and said fibers being in noninterlocked relationship with respect to each other.
Claim 10
Dependent Claim
71 words
A bearing comprising two bearing elements having surfaces in mated slidable engagement with each other, the surface of at least one of said elements comprising fibers of a relatively soft resin having good inherent lubricity embedded in a matrix of a relatively hard resin having less inherent lubricity, substantially all of said fibers being substantially parallel to said surface and said fibers being in noninterlocked relationship with respect to each other.
Claim 11
Dependent Claim
22 words
A bearing as set forth in claim 8 wherein some of said fibers are at an angle to other of said fibers.
Claim 12
Independent Claim
68 words
A method for manufacturing a bearing element comprising embedding in a layer of hardenable resin a plurality of fibers of a relatively soft resin having good inherent lubricity, said fibers being in noninterlocked relationship with respect to each other and substantially all of said fibers being oriented such that they are substantially parallel to the surface of said layer of hardenable resin, and thereafter hardening said hardenable resin.
Claim 13
Independent Claim
68 words
A method for manufacturing a bearing element comprising embedding in a layer of hardenable resin a plurality of fibers of a relatively soft resin having good inherent lubricity, said fibers being in noninterlocked relationship with respect to each other and substantially all of said fibers being oriented such that they are substantially parallel to the surface of said layer of hardenable resin, and thereafter hardening said hardenable resin.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |