US3753695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing materials
Assignee: Federal Mogul Engineering Ltd
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Filing: 1971-02-11
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Granted: 1973-08-21
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Expires: 1991-02-11
Abstract
Abstract The invention is a bearing material of which a major constituent is aluminum characterised by between 1 percent and 16 percent (preferably between 3 percent and 7 percent or between 7 percent and 10 percent or between 10 percent and 16 percent of bismuth by weight, and optionally including 0 - 3 percent copper, 0 - 3 percent nickel, 0 - 3 percent manganese, 0 - 11 percent silicon.
Inventors
- 👤 K Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:34
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/02; C22C21/003; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/121; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10T; Y10T428/00; Y10T428/12; Y10T428/12458; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12757
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
24 words
A bearing material as claimed in claim 1, in the form of a slab whose thickness is small compared with its length and breadth.
Claim 2
Dependent Claim
37 words
A bearing material as claimed in claim 2, in which the proportion of bismuth at one of the larger surfaces of the slab is greater than the proportion of bismuth at the other of the larger surfaces.
Claim 3
Dependent Claim
25 words
A bearing material as claimed in claim 3, in which there is about 16% by weight of bismuth at the one of the larger surfaces.
Claim 4
Dependent Claim
23 words
A bearing material as claimed in claim 3, in which there is substantially no bismuth at the said other of the larger surfaces.
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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |