US3075624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch or brake
Assignee: Fawick Corp
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Filing: 1960-07-19
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Granted: 1963-01-29
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Expires: 1980-07-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas L Fawick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:39
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/04; F16D25/042; F16D25/046; F16D51/00; F16D51/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
A BRAKE OR CLUTCH COMPRISING TWO RELATIVELY ROTATABLE STRUCTURES ADAPTED FOR TORQUE-SUSTAINING FRICTIONAL ENGAGEMENT WITH EACH OTHER AND ARRANGED ONE RADIALLY INSIDE THE OTHER, ONE OF SAID STRUCTURES COMPRISING A HOLLOW FLUID-DISTENSIBLE RESILIENT ANNULAR DIAPHRAGM HAVING AN ANNULAR TORQUE-SUSTAINING WALL OF RUBBER-LIKE MATERIAL WHICH IS POSITIONED TO BE FORCED RADIALLY TOWARD THE OTHER OF SAID STRUCTURES BY INTERNAL FLUID PRESSURE IN THE DIAPHRAGM, AND A SINOUS METAL SPRING EXTENDING CONTINUOUSLY THROUGHOUT SUBSTANTIALLY THE COMPLETE CIRCUMFERENTIAL EXTENT OF SAID ANNULAR TORQUE-SUSTAINING WALL, SAID SPRING THROUGHOUT ITS EXTENT BEING EMBEDDED IN AND BONDED TO SAID RUBBER-LIKE MATERIAL OF SAID TORQUE-SUSTAINING WALL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |