Patent US3352612A successfully refreshed from Google Patents.
US3352612A
Expired / Lapsed
US
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Self-lubricating bearing
Assignee: LA METALLURGIE FRANCAISE DES POUDRES-METAFRAM
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Filing: 1964-07-20
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Granted: 1967-11-14
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Expires: 1984-07-20
Abstract
No abstract record available.
Inventors
- 👤 Eudier Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:08
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/103; F16C33/104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A SINTERED POROUS METAL POWDER SELF-LUBRICATING SHAFT BEARING COMPRISING A SHAFT, A FINE PORED LAYER OF SINTERED METAL POWDER IN CONTACT WITH AND EXTENDING THE LENGTH OF CONTACT OF THE BEARING WITH THE SHAFT AND A SINTERED METAL POWDER LAYER OF LARGER PORES IN CONTACT WITH THE OUTER SURFACE OF SAID FINE PORED LAYER EXTENDING THE LENGTH THEREOF ALONG THE SHAFT AND ADJACENT AND OPEN TO THE ATMOSPHERE, SAID FINE PORED LAYER SUPPORTING A VACUUM WITHIN THE BEARING IMPREGNATED WITH A LIQUID LUBRICANT.
Claim 2
Dependent Claim
83 words
A SINTERED POROUS METAL POWDER SELF-LUBRICATING SHAFT BEARING COMPRISING A SHAFT, A FINE PORED LAYER OF SINTERED METAL POWDER IN CONTACT WITH AND EXTENDING THE LENGTH OF CONTACT OF THE BEARING WITH THE SHAFT AND A SINTERED METAL POWDER LAYER OF LARGER PORES IN CONTACT WITH THE OUTER SURFACE OF SAID FINE PORED LAYER EXTENDING THE LENGTH THEREOF ALONG THE SHAFT AND ADJACENT AND OPEN TO THE ATMOSPHERE, SAID FINE PORED LAYER SUPPORTING A VACUUM WITHIN THE BEARING IMPREGNATED WITH A LIQUID LUBRICANT.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |