US3262334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscous friction dampers
Assignee: Hydrokin Ltd
•
Filing: 1964-05-01
•
Granted: 1966-07-26
•
Expires: 1984-05-01
Abstract
No abstract record available.
Inventors
- 👤 Maurice F Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:27
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/10; F16F15/16; F16F15/167; F16F15/173; F16F9/00; F16F9/30; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2121; Y10T74/2122; Y10T74/2126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A VISCOUS FRICTION DAMPER COMPRISING AN ANNULAR CASING, AN ANNULAR SLIPPING FLYWHEEL ENCOLOSED WITHIN SAID CASING IN CLOSE SPACED RELATION WITH THE INTERIOR SURFACES OF SAID CASING, A VISCOUS DAMPING FLUID IN SAID CASING, AND A NON-METALLIC JOURNAL BEARING COMPRISING A RING OF NON-METALLIC BEARING MATERIAL HAVING INHERENT FLEXIBILITY AND RESILIENCE AND ARRANGED IN FREE FLOATING RELATION
Claim 2
Dependent Claim
57 words
A VISCOUS FRICTION DAMPER COMPRISING AN ANNULAR CASING, AN ANNULAR SLIPPING FLYWHEEL ENCOLOSED WITHIN SAID CASING IN CLOSE SPACED RELATION WITH THE INTERIOR SURFACES OF SAID CASING, A VISCOUS DAMPING FLUID IN SAID CASING, AND A NON-METALLIC JOURNAL BEARING COMPRISING A RING OF NON-METALLIC BEARING MATERIAL HAVING INHERENT FLEXIBILITY AND RESILIENCE AND ARRANGED IN FREE FLOATING RELATION
References Cited (Backward Citations)
US2240111A
Cited
FR1016068A
Cited
US2966074A
Cited
DE1101870B
Cited
US3086826A
Cited
US3130991A
Cited
US3200485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |