US3239283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low friction bearing
Assignee: RTX Corp
•
Filing: 1961-10-20
•
Granted: 1966-03-08
•
Expires: 1981-10-20
Abstract
No abstract record available.
Inventors
- 👤 John E Broeze
- 👤 William J Laubendorfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:38
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A LOW FRICTION BEARING INCLUDING IN COMBINATION A HOLLOW CYLINDRICAL SUPPORT FORMED OF PIEZOELECTRIC MATERIAL, A JEWEL BEARING AND AN END STONE CARRIED BY SAID SUPPORT, A BEARING PIN SUPPORTED BY SAID JEWEL BEARING FOR ROTATION AROUND AN AXIS AND MEANS FOR APPLYING AN ALTERNAT-
Claim 2
Dependent Claim
45 words
A LOW FRICTION BEARING INCLUDING IN COMBINATION A HOLLOW CYLINDRICAL SUPPORT FORMED OF PIEZOELECTRIC MATERIAL, A JEWEL BEARING AND AN END STONE CARRIED BY SAID SUPPORT, A BEARING PIN SUPPORTED BY SAID JEWEL BEARING FOR ROTATION AROUND AN AXIS AND MEANS FOR APPLYING AN ALTERNAT-
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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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |