Patent US1859061A successfully refreshed from Google Patents.
Patent US4115943A successfully refreshed from Google Patents.
US3236573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low friction greaseless bearings
Assignee: American Metal Products Co
•
Filing: 1963-04-05
•
Granted: 1966-02-22
•
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
2026-11-03 00:00
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)
US2666677A
Cited
US2695425A
Cited
US2815253A
Cited
GB778816A
Cited
US2998397A
Cited
US2944831A
Cited
US3070408A
Cited
US2975128A
Cited
US3094376A
Cited
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 |