US3122399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-balancing bearing construction
Assignee: Individual
•
Filing: 1962-04-11
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Granted: 1964-02-25
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Expires: 1982-04-11
Abstract
No abstract record available.
Inventors
- 👤 David U Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:31
CPC Classifications
F; F16; F16C; F16C27/00; F16C27/04; F01; F01D; F01D25/00; F01D25/16; F01D25/162; F01D25/164; F16C21/00; F16C27/02; F16C2360/00; F16C2360/23; F16C2360/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
IN A SELF-BALANCING BEARING CONSTRUCTION, A BEARING, A SHAFT, A SLEEVE MOUNTED FOR ROTATION WITHIN SAID BEARING AND DISPOSED IN SPACED RELATION ABOUT A LONGITUDINAL PORTION OF SAID SHAFT, MEANS AT THE ENDS OF SAID SLEEVE AND SAID SHAFT PORTION SEALING THE SPACE BETWEEN SAID SLEEVE AND SHAFT PORTION, MEANS EXTENDING BETWEEN SAID SHAFT AND SLEEVE CONNECTING SAID SLEEVE AND SHAFT FOR CONJOINT ROTATION AND PERMITTING OF RELATIVE RADIAL MOVEMENT OF SAID SHAFT WITH RELATION TO SAID SLEEVE, MEANS BIASING SAID SHAFT TOWARDS CONCENTRIC RELATION WITH THE SLEEVE, AND SAID SPACE BEING FILLED WITH A VISCOUS MATERIAL WHEREBY SAID SHAFT HAS FLOATING MOVEMENT IN SAID MATERIAL AND WILL SEEK A SELF-BALANCING POSITION WITHIN SAID SLEEVE WHEN ROTATING ABOVE ITS CRITICAL SPEED.
References Cited (Backward Citations)
GB578989A
Cited
US2581656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |