Patent US4099804A successfully refreshed from Google Patents.
US4099804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plain bearings
Assignee: Federal Mogul Engineering Ltd
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Filing: 1976-10-28
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Granted: 1978-07-11
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Expires: 1996-10-28
Abstract
Abstract This invention consists of a plain bearing in which the bearing surface consists of or includes poly-phenylene sulphide to give good bearing properties and also because such linings can be bonded to backings to steel or aluminium or aluminium alloys with a bond that withstands hard operating conditions, for example changes of temperature and changes of shape and stress. The linear polymer can be cross-linked to a desired extent by appropriate treatment.
Inventors
- 👤 Dennis Stanley Baker
- 👤 Glyndwr John Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:45
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; F16C9/00; F16C9/02; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12056; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12757
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
32 words
A bearing comprising a steel backing, having an adherent metal powder intermediate layer bonded thereto, and having a layer of polyphenylene sulfide adherent to said intermediate layer by being melt impregnated therein.
Claim 2
Dependent Claim
32 words
A bearing comprising a steel backing, having an adherent metal powder intermediate layer bonded thereto, and having a layer of polyphenylene sulfide adherent to said intermediate layer by being melt impregnated therein.
Claim 3
Dependent Claim
16 words
A bearing as claimed in claim 1 in which lubricant pockets are provided in the lining.
Claim 4
Dependent Claim
12 words
A bearing as claimed in claim 1 which is of arcuate shape.
Claim 5
Independent Claim
39 words
A method for producing a bearing which comprises adhering a metal powder intermediate layer onto a steel backing, melt impregnating polyphenylene sulfide onto said intermediate layer so as to form an adherent layer of said sulfide on said layer.
Claim 6
Independent Claim
39 words
A method for producing a bearing which comprises adhering a metal powder intermediate layer onto a steel backing, melt impregnating polyphenylene sulfide onto said intermediate layer so as to form an adherent layer of said sulfide on said layer.
Claim 7
Dependent Claim
18 words
The method of claim 4 wherein the sulfide is heated at a temperature of at least 375° C.
References Cited (Backward Citations)
US3464845A
Cited
US3623205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |