US3014884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction elements for brakes, clutches and similar mechanisms and methods of making same
Assignee: Dunlop Rubber Co Ltd
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Filing: 1957-11-05
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Granted: 1961-12-26
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Expires: 1977-11-05
Abstract
No abstract record available.
Inventors
- 👤 Bray Horace Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:18
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/021; F16D69/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A FRICTION ELEMENT FOR BRAKES, CLUTCHES AND SIMILAR MECHANISMS CONSISTING ESSENTIALLY OF A COMPACT MATRIX OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE METALS: COPPER, IRON, NICKEL, COBALT, BRASS, BRONZE; MIXTURES THEREOF WITH TIN AND MIXTURES THEREOF WITH ZINC; AND ORGANIC THERMOSETTING RESINOUS MATERIAL, WHEREIN IS DISPERSED ANGULAR PARTICLES OF A WATER AND HEAT RESISTANT PHOSPHIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, TIN ZINC, IRON, BRASS, BRONZE, COBALT AND NICKEL, SAID PARTICLES CONSTITUTING FROM 1 PERCENT TO 70 PERCENT OF THE WEIGHT OF SAID MATERIAL AND PARTICLES
Claim 2
Dependent Claim
92 words
A FRICTION ELEMENT FOR BRAKES, CLUTCHES AND SIMILAR MECHANISMS CONSISTING ESSENTIALLY OF A COMPACT MATRIX OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE METALS: COPPER, IRON, NICKEL, COBALT, BRASS, BRONZE; MIXTURES THEREOF WITH TIN AND MIXTURES THEREOF WITH ZINC; AND ORGANIC THERMOSETTING RESINOUS MATERIAL, WHEREIN IS DISPERSED ANGULAR PARTICLES OF A WATER AND HEAT RESISTANT PHOSPHIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, TIN ZINC, IRON, BRASS, BRONZE, COBALT AND NICKEL, SAID PARTICLES CONSTITUTING FROM 1 PERCENT TO 70 PERCENT OF THE WEIGHT OF SAID MATERIAL AND PARTICLES
References Cited (Backward Citations)
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Cited
US1899239A
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US2369502A
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US2291734A
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US2357409A
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US2379166A
Cited
US2488332A
Cited
US2784105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |