Patent US3236573A successfully refreshed from Google Patents.
US3236573A
Expired / Lapsed
US
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Low friction greaseless bearings
Assignee: American Metal Products Co
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Filing: 1963-04-05
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Granted: 1966-02-22
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Expires: 1983-04-05
Abstract
No abstract record available.
Inventors
- 👤 Donnellan Gerald Lowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:26
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16C11/0619; F16C11/0623; F16C11/0628; F16C11/0633; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A LOW FRICTION GREASELESS BEARING COMPRISING A BEARING ELEMENT WHICH IS FORMED, TO PROVIDE A BEARING SURFACE AND A REVERSE NON-BEARING SURFACE, FROM A MIXTURE OF HARD WEARING LOW FRICTION THERMOPLASTIC SYNTHETIC RESIN AND A POLYMERIZED FLUORINATED HYDROCARBON, AND A BACKING ELEMENT WHICH IS FORMED FROM A DIFFERENT FLEXIBLE MATERIAL AND IS KEYED TO THE NON-BEARING SURFACE OF SAID BEARING ELEMENT TO PROVIDE SUPPORT FOR SAID BEARING ELEMENT.
Claim 2
Dependent Claim
68 words
A LOW FRICTION GREASELESS BEARING COMPRISING A BEARING ELEMENT WHICH IS FORMED, TO PROVIDE A BEARING SURFACE AND A REVERSE NON-BEARING SURFACE, FROM A MIXTURE OF HARD WEARING LOW FRICTION THERMOPLASTIC SYNTHETIC RESIN AND A POLYMERIZED FLUORINATED HYDROCARBON, AND A BACKING ELEMENT WHICH IS FORMED FROM A DIFFERENT FLEXIBLE MATERIAL AND IS KEYED TO THE NON-BEARING SURFACE OF SAID BEARING ELEMENT TO PROVIDE SUPPORT FOR SAID BEARING ELEMENT.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |