US3297599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction composition for high energy service
Assignee: Johns Manville Corp
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Filing: 1965-05-24
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Granted: 1967-01-10
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Expires: 1985-05-24
Abstract
No abstract record available.
Inventors
- 👤 Franklin W Eschen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:15
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/021; F16D69/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A FRICTION COMPOSITION CHARACTERIZED BY ITS STABILITY OVER EXTENDED PRESSURE AND TEMPERATURE CONDITIONS FOR THE MANUFACTURE OF HIGH ENERGY SERVICE FRICTION ELEMENTS, SAID COMPOSITION CONSISTING ESSENTIALLY OF THE COMBINATION, IN PERCENT BY WEIGHT OF THE TOTAL OF: APPROXIMATELY 12 TO 30% OF THERMOSETTING RESIN BINDER, APPROXIMATELY 1 TO 5% OF GRAPHITE, APPROXIMATELY 12 TO 40% OF POWDERED COPPER ALLOY SELECTED FROM THE GROUP CONSISTING OF BRASS POWDER, BRONZE POWDER, AND MIXTURES THEREOF, APPROXIMATELY 10 TO 25% OF CALCIUM ALUMINATE CEMENT, APPROXIMATELY 10 TO 40% OF ASBESTOS FIBERS, 0 TO APPROXIMATELY 12% OF BARYTES, 0 TO APPROXIMATELY 10% OF ORGANIC FRICTION PARTICLES, 0 TO APPROXIMATELY 10% OF MICA PARTICLES, AND 0 TO APPROXIMATELY 15% OF AT LEAST ONE METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF ZINC OXIDE, FERRIC OXIDE, CHROMIUM OXIDE, AND STANNOUS OXIDE.
Claim 2
Dependent Claim
134 words
A FRICTION COMPOSITION CHARACTERIZED BY ITS STABILITY OVER EXTENDED PRESSURE AND TEMPERATURE CONDITIONS FOR THE MANUFACTURE OF HIGH ENERGY SERVICE FRICTION ELEMENTS, SAID COMPOSITION CONSISTING ESSENTIALLY OF THE COMBINATION, IN PERCENT BY WEIGHT OF THE TOTAL OF: APPROXIMATELY 12 TO 30% OF THERMOSETTING RESIN BINDER, APPROXIMATELY 1 TO 5% OF GRAPHITE, APPROXIMATELY 12 TO 40% OF POWDERED COPPER ALLOY SELECTED FROM THE GROUP CONSISTING OF BRASS POWDER, BRONZE POWDER, AND MIXTURES THEREOF, APPROXIMATELY 10 TO 25% OF CALCIUM ALUMINATE CEMENT, APPROXIMATELY 10 TO 40% OF ASBESTOS FIBERS, 0 TO APPROXIMATELY 12% OF BARYTES, 0 TO APPROXIMATELY 10% OF ORGANIC FRICTION PARTICLES, 0 TO APPROXIMATELY 10% OF MICA PARTICLES, AND 0 TO APPROXIMATELY 15% OF AT LEAST ONE METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF ZINC OXIDE, FERRIC OXIDE, CHROMIUM OXIDE, AND STANNOUS OXIDE.
References Cited (Backward Citations)
US2273770A
Cited
US2885379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |