US2798005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous metal bearing containing polytetrafluoroethylene and a solid lubricant
Assignee: Federal Mogul Engineering Ltd
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Filing: 1952-10-13
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Granted: 1957-07-02
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Expires: 1972-10-13
Abstract
No abstract record available.
Inventors
- 👤 Phil P Love
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:43
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/24; F16C33/20; F16C33/203; F16C33/206; F16C2202/00; F16C2202/50; F16C2202/54; F16C2208/00; F16C2208/20; F16C2208/30; F16C2208/32; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/936; Y10S277/944; Y10S277/945; Y10S277/946; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49702; Y10T29/49705; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24612; Y10T428/2462; Y10T428/24802; Y10T428/24917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PLAIN BEARING COMPRISING A POROUS METALLIC MATRIX LAYER, A BARING SURFACE LAYER OF POLY-TETRA-FLUORO-ETHYLENE EXTENDING INTO THE PORES OF THE METALLIC MATRIX, SAID BEARING SURFACE LAYER OF POLY-TETRA-FLUORO-ETHYLENE HAVING DISPERSED CAVITIES IN THE SURFACE THEREOF, SAID CAVITIES BEING OPEN TO ATMOSPHERE AND A FILLING OF NON-RESINOUS SOLID LUBRICANT IN SAID CAVITIES AND CAPABLE OF BEING WITHDRAWN THEREFROM FOR FORMING A FILM ON THE SURFACE OF A ROTATABLE ELEMENT RUNNING AGAINST THE BEARING SURFACE.
Claim 2
Dependent Claim
74 words
A PLAIN BEARING COMPRISING A POROUS METALLIC MATRIX LAYER, A BARING SURFACE LAYER OF POLY-TETRA-FLUORO-ETHYLENE EXTENDING INTO THE PORES OF THE METALLIC MATRIX, SAID BEARING SURFACE LAYER OF POLY-TETRA-FLUORO-ETHYLENE HAVING DISPERSED CAVITIES IN THE SURFACE THEREOF, SAID CAVITIES BEING OPEN TO ATMOSPHERE AND A FILLING OF NON-RESINOUS SOLID LUBRICANT IN SAID CAVITIES AND CAPABLE OF BEING WITHDRAWN THEREFROM FOR FORMING A FILM ON THE SURFACE OF A ROTATABLE ELEMENT RUNNING AGAINST THE BEARING SURFACE.
References Cited (Backward Citations)
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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) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |