US3072449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polytetrafluoroethylene bushing-type bearing and method of forming same
Assignee: Chicago Rawhide Manufacturing Co Inc
•
Filing: 1959-04-29
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Granted: 1963-01-08
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Expires: 1979-04-29
Abstract
No abstract record available.
Inventors
- 👤 James P Morley
- 👤 Richard W Blair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:40
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; F16C33/208; F16C2208/00; F16C2208/02; F16C2208/04; F16C2208/20; F16C2208/30; F16C2208/32; F16C2220/00; F16C2220/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A BUSHING-TYPE BEARING FORMED FROM SINTERED POLYTETRAFLUOROETHYLENE AND HAVING EMBEDDED THEREIN A COILED THERMAL CONDUCTOR WHICH IS FORMED FROM SOLID DUCTILE METALLIC MATERIAL AND IS IN STATIC CONDITION THROUGHOUT TO AVOID STRESSING SAID POLYTETRAFLUOROETHYLENE, AT LEAST SUBSTANTIALLY ALL OF THE COILS OF SAID CONDUCTOR BEING ONLY PARTIALLY BUT AXIALLY CONTINUOUSLY EXPOSED ALONG THE OUTER SURFACE OF SAID BEARING FOR DIRECT THERMAL CONDUCTION THEREFROM, THE INNER SURFACE OF SAID BEARING BEING DEFINED BY UNINTERRUPTED POLYTETRAFLUOROETHYLENE OF SUBSTANTIAL DEPTH.
Claim 2
Dependent Claim
77 words
A BUSHING-TYPE BEARING FORMED FROM SINTERED POLYTETRAFLUOROETHYLENE AND HAVING EMBEDDED THEREIN A COILED THERMAL CONDUCTOR WHICH IS FORMED FROM SOLID DUCTILE METALLIC MATERIAL AND IS IN STATIC CONDITION THROUGHOUT TO AVOID STRESSING SAID POLYTETRAFLUOROETHYLENE, AT LEAST SUBSTANTIALLY ALL OF THE COILS OF SAID CONDUCTOR BEING ONLY PARTIALLY BUT AXIALLY CONTINUOUSLY EXPOSED ALONG THE OUTER SURFACE OF SAID BEARING FOR DIRECT THERMAL CONDUCTION THEREFROM, THE INNER SURFACE OF SAID BEARING BEING DEFINED BY UNINTERRUPTED POLYTETRAFLUOROETHYLENE OF SUBSTANTIAL DEPTH.
References Cited (Backward Citations)
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US2622949A
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US2702730A
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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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |