US3092214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction devices
Assignee: RAYBESTOS MANHATIAN Inc
•
Filing: 1961-01-09
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Granted: 1963-06-04
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Expires: 1981-01-09
Abstract
No abstract record available.
Inventors
- 👤 Clyde S Batchelor
- 👤 Warren R Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:34
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
AN ALUMINUM BRAKE DRUM COMPRISING A CYLINDRICAL FLANGE PORTION, A METALLIC FRICTION TRACK FACING MEMBER HAVING AN AVERAGE THICKNESS OF FROM ABOUT .002 TO ABOUT .008 INCH LINING SAID CYLINDRICAL FLANGE COMPOSED OF METAL OF HIGHER MELTING POINT, GREATER HARDNESS, LOWER THERMAL CONDUCTIVITY AND LOWER COEFFICIENT OF THERMAL EXPANSION THAN SAID BRAKE DRUM, AND A LAYER OF HIGH HEAT CONDUCTIVE METAL SELECTED FROM THE GROUP CONSISTING OF SILVER, COPPER, AND ALLOYS OF SAID METALS HAVING A MELTING POINT AND A THERMAL CONDUCTIVITY GREATER THAN SAID BRAKE DRUM METAL DISPOSED BETWEEN AND IN INTEGRALLY BONDED RELATIONSHIP WITH SAID ALUMINUM FLANGE SURFACE AND SAID HIGH MELTING POINT METAL FRICTION TRACK.
Claim 2
Dependent Claim
108 words
AN ALUMINUM BRAKE DRUM COMPRISING A CYLINDRICAL FLANGE PORTION, A METALLIC FRICTION TRACK FACING MEMBER HAVING AN AVERAGE THICKNESS OF FROM ABOUT .002 TO ABOUT .008 INCH LINING SAID CYLINDRICAL FLANGE COMPOSED OF METAL OF HIGHER MELTING POINT, GREATER HARDNESS, LOWER THERMAL CONDUCTIVITY AND LOWER COEFFICIENT OF THERMAL EXPANSION THAN SAID BRAKE DRUM, AND A LAYER OF HIGH HEAT CONDUCTIVE METAL SELECTED FROM THE GROUP CONSISTING OF SILVER, COPPER, AND ALLOYS OF SAID METALS HAVING A MELTING POINT AND A THERMAL CONDUCTIVITY GREATER THAN SAID BRAKE DRUM METAL DISPOSED BETWEEN AND IN INTEGRALLY BONDED RELATIONSHIP WITH SAID ALUMINUM FLANGE SURFACE AND SAID HIGH MELTING POINT METAL FRICTION TRACK.
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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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |