Patent US2628138A successfully refreshed from Google Patents.
US2628138A
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Porous chambered bearing
Assignee: Michigan Powdered Metal Products Co
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Filing: 1949-03-18
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Granted: 1953-02-10
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Expires: 1969-03-18
Abstract
No abstract record available.
Inventors
- 👤 Leland C Blood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:39
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/14; F16C2220/00; F16C2220/20; F16C2223/00; F16C2223/10; F16C2223/12; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A BEARING COMPRISING A BEARING BODY OF POROUS SINTERED POWDERED METAL HAVING A BEATING SURFACE AND A COMPLETELY INTERNAL LUBRICANT CHAMBER WHOLLY ENCLOSED IN A WALL THEREOF AND COMMUNICATING WITH SAID BEARING SURFACE THROUGH THE PORES IN SAID BODY, SAID CHAMBER IN CROSSSECTION BEING SUBDIVIDED INTO A MULTIPICITY OF CHAMBER PORTIONS SPACED APART FROM ONE OF OTHER IN A DIRECTION CO-EXTENSIVE WITH SAID BEARING SURFACE, AND REINFORCING BRIDGE PORTIONS OF BEARING BODY METAL INTEGRAL WITH SAID BEARING BODY DISPOSED IN THE INTERVALS BETWEEN SAID SPACED CHAMBER PORTIONS.
Claim 2
Dependent Claim
87 words
A BEARING COMPRISING A BEARING BODY OF POROUS SINTERED POWDERED METAL HAVING A BEATING SURFACE AND A COMPLETELY INTERNAL LUBRICANT CHAMBER WHOLLY ENCLOSED IN A WALL THEREOF AND COMMUNICATING WITH SAID BEARING SURFACE THROUGH THE PORES IN SAID BODY, SAID CHAMBER IN CROSSSECTION BEING SUBDIVIDED INTO A MULTIPICITY OF CHAMBER PORTIONS SPACED APART FROM ONE OF OTHER IN A DIRECTION CO-EXTENSIVE WITH SAID BEARING SURFACE, AND REINFORCING BRIDGE PORTIONS OF BEARING BODY METAL INTEGRAL WITH SAID BEARING BODY DISPOSED IN THE INTERVALS BETWEEN SAID SPACED CHAMBER PORTIONS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |