US2970933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite bearings and process of making the same
Assignee: Federal Mogul Bower Bearings Inc
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Filing: 1957-01-18
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Granted: 1961-02-07
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Expires: 1977-01-18
Abstract
No abstract record available.
Inventors
- 👤 Lawrence A Barera
- 👤 Jr William G Fiedrich
- 👤 Brasse Gordon J Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:52
CPC Classifications
B; B22; B22F; B22F7/00; B22F7/02; B22F7/04; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/14; F16C2220/00; F16C2220/20; F16C2223/00; F16C2223/30; F16C2223/40; F16C2226/00; F16C2226/30; F16C2226/32; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/1216; Y10T428/12493; Y10T428/12701
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS OF MANUFACTURING A COMPOSITE BEARING COMPRISING TREATING A MATALLIC BEARING STRUCTURE COMPRISING A BEARING LAYER BONDED TO A HARD METAL BACKING STRIP, SAID BEARING LAYER BEING A DENSE AND NON POROUS SINTERED LAYER OF INTERSPERSED PHASES OF COOPER AND LEAD BONDED TO SAID STRIP, SAID TREATMENT COMPRISING DIFFUSING INTO SAID BEARING STRUCTURE A MOLTEN TIN-CONTAINING ALLOY SO THAT PORTIONS OF THE ORIGINAL LEAD PHASE OF SAID SINTERED LAYER HAVE BEEN DISPLACED BY TIN AND THE REMAINING PORTIONS HAVE BEEN PENETRATED BY AND ARE ALLOYED WITH THE SAID TIN.
Claim 2
Dependent Claim
90 words
A PROCESS OF MANUFACTURING A COMPOSITE BEARING COMPRISING TREATING A MATALLIC BEARING STRUCTURE COMPRISING A BEARING LAYER BONDED TO A HARD METAL BACKING STRIP, SAID BEARING LAYER BEING A DENSE AND NON POROUS SINTERED LAYER OF INTERSPERSED PHASES OF COOPER AND LEAD BONDED TO SAID STRIP, SAID TREATMENT COMPRISING DIFFUSING INTO SAID BEARING STRUCTURE A MOLTEN TIN-CONTAINING ALLOY SO THAT PORTIONS OF THE ORIGINAL LEAD PHASE OF SAID SINTERED LAYER HAVE BEEN DISPLACED BY TIN AND THE REMAINING PORTIONS HAVE BEEN PENETRATED BY AND ARE ALLOYED WITH THE SAID TIN.
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) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |