US3685878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing construction
Assignee: Kacarb Products Corp
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Filing: 1970-05-25
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Granted: 1972-08-22
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Expires: 1990-05-25
Abstract
Abstract A plain dry bearing consists of two relatively movable members, one providing a rubbing bearing surface made of at least in part a solid organic lubricant material and the other providing a rubbing bearing surface made of a thin ceramic coating on a metal substrate. The ceramic coating is sufficiently thin, less than 0.010 of an inch, that it may deform under load and transfer stresses to the metal substrate, thereby reducing the possibility of fracturing and spalling the coating and producing a bearing having both the low wear property of the ceramic coating and the high load carrying capability of the metal substrate.
Inventors
- 👤 Stanley S Orkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:14
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/043; F16C11/00; F16C11/04; F16C11/06; F16C11/0614; F16C23/00; F16C23/02; F16C23/04; F16C23/043; F16C23/045
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
26 words
The self-lubricated bearing assembly of claim 1 wherein the solid organic lubricant material is polyimide containing 14 weight percent polytetrafluoroethylene fibers and 15 weight percent graphite.
References Cited (Backward Citations)
US3056709A
Cited
US3151015A
Cited
US3166058A
Cited
US3421969A
Cited
US3535005A
Cited
US3535006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |