Patent US3605968A successfully refreshed from Google Patents.
US3605968A
Expired / Lapsed
US
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Segmented friction member for brake or clutch
Assignee: Goodrich Corp
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Filing: 1969-09-18
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Granted: 1971-09-20
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Expires: 1989-09-18
Abstract
Abstract AN ANNULAR SEGMENTED FRICTION DISC MEMBER FOR USE AS A ROTOR OR ATATOR IN DISC-TYPE BRAKE OR CLUTCH ASSEMBLY IN WHICH A PLURALITY OF CIRCUMFERENTIALLY SPACED-APART HEAT-ABSORBING SEGMENTS ARE HELD BETWEEN PAIRS OF SEGMENTAL FACING MEMBERS. EACH FACING MEMBER HAS CIRCUMFERENTIAL EXTNESIONS AT THE ENDS WHICH OVERLAP THE EXTENSIONS OF ADJACENT FACING MEMBERS AND ARE RETAINED BY RADICAL MEMBERS CONNECTED TO AN ANNULAR RING PROVIDING A UNITARY DISC STRUCTURE.
Inventors
- 👤 William Edwin Ely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:13
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/12; F16D65/121; F16D13/00; F16D13/58; F16D13/60; F16D13/64; F16D13/648; F16D69/00; F16D65/125; F16D65/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |