US2901388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction facing
Assignee: Russell Manufacturing Co
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Filing: 1956-11-19
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Granted: 1959-08-25
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Expires: 1976-11-19
Abstract
No abstract record available.
Inventors
- 👤 Morton Henry Clifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:39
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/021; F16D69/022; B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/22; D; D02; D02G; D02G3/00; D02G3/02; D02G3/12; D02G3/16; D02G3/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A FRICTION FACING, COMPRISING A SPIRAL WOUND WEB IMPREGNATED WITH A HEAT-SET THERMOSETTING BONDING FRICTION MATERIAL, SAID WEB BEING COMPOSED OF PLIED YARN SOME OF SAID PLIES COMPRISING SPUN YARN COMPOSED OF A BLEND OF ASBESTOS, COTTON AND SYNTHETIC FIBERS, OTHERS OF SAID PLIES COMPRISING A CONTINUOUS FILAMENT FIBER, AND THERMOSPLASTIC SYNTHETIC FIBERS DISPERSED IN SAID BONDING MATERIAL WHEREBY UNDER THE ACTION OF INCREASED TEMPERATURE DUE TO SURFACE FRICTION THE THERMOPLASTIC FIBERS SOFTEN TO A TACKY STATE RESULTING IN INCREASED FRICTION AND RETURTN TO THEIR ORIGINAL FORM AND CONDITION WHEN THE TEMPERATURE FALLS.
Claim 2
Dependent Claim
93 words
A FRICTION FACING, COMPRISING A SPIRAL WOUND WEB IMPREGNATED WITH A HEAT-SET THERMOSETTING BONDING FRICTION MATERIAL, SAID WEB BEING COMPOSED OF PLIED YARN SOME OF SAID PLIES COMPRISING SPUN YARN COMPOSED OF A BLEND OF ASBESTOS, COTTON AND SYNTHETIC FIBERS, OTHERS OF SAID PLIES COMPRISING A CONTINUOUS FILAMENT FIBER, AND THERMOSPLASTIC SYNTHETIC FIBERS DISPERSED IN SAID BONDING MATERIAL WHEREBY UNDER THE ACTION OF INCREASED TEMPERATURE DUE TO SURFACE FRICTION THE THERMOPLASTIC FIBERS SOFTEN TO A TACKY STATE RESULTING IN INCREASED FRICTION AND RETURTN TO THEIR ORIGINAL FORM AND CONDITION WHEN THE TEMPERATURE FALLS.
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) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |