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Patent US3623981A successfully refreshed from Google Patents.
US3623981A
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Composite bearing materials
Assignee: NAT RES DEV
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Filing: 1968-05-06
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Granted: 1971-11-30
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Expires: 1988-05-06
Abstract
Abstract Composite bearing materials having markedly reduced wear are obtained by incorporating carbon fibers of high tensile strength and Young''s Modulus in a metal matrix. Advantageously a lamellar solid, for example molybdenum sulfide, may also be added. These materials may be manufactured by depositing metal by an electroless method on chopped carbon fibers and compacting the composite by heat and pressure, alternatively the composite may be compacted by powder metallurgical methods. The lamellar solid, if required, is added before compacting by heat and pressure.
Inventors
- 👤 Jeremy Peter Giltrow
- 👤 Patricia Ann Grattan
- 👤 George Henry Kinner
- 👤 John Keith Lancaster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:06
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; C; C22; C22C; C22C49/00; C22C49/14; F16C33/06; F16C33/12; F16C33/121; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/912; Y10S428/00; Y10S428/902; Y10S428/922; Y10S428/9335; Y10S428/936; Y10T; Y10T428/00; Y10T428/12; Y10T428/12486; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/2933; Y10T428/294; Y10T428/2958
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
30 words
A bearing component according to claim 1 wherein said carbon fibers are high strength, high Young''s modulus carbon fibers obtained from synthetic polymer fibers oxidized under tension and subsequently carbonized.
Claim 2
Dependent Claim
24 words
A bearing component according to claim 1 wherein said bearing metal is selected from the group consisting of silver, nickel, cobalt, lead and copper.
Claim 3
Dependent Claim
16 words
A bearing component according to claim 1 further comprising a lubricant impregnated within said metal matrix.
Claim 4
Dependent Claim
22 words
A bearing component according to claim 1 further comprising a lamellar solid selected from the group consisting of graphite and molybdenum sulphide.
Claim 5
Dependent Claim
24 words
A bearing component according to claim 5 wherein said lamellar solid comprises molybdenum disulfide in an amount of 5 to 15 percent by volume.
Claim 6
Dependent Claim
9 words
A bearing comprising a bearing component according to claim
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |