US3553643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake lining wear indicator
Assignee: Individual
•
Filing: 1968-09-04
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Granted: 1971-01-05
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Expires: 1988-09-04
Abstract
Abstract A LINING WEAR AND CONTACT INDICATOR FOR MULTI-WHEELED VEHICLES OPERATIVE TO RENDER A SIGNAL DURING THE PERIOD THE BRAKE LININGS OF A VEHICLE CONTACT THE ASSOCIATED BRAKE DRUMS AND TO ALSO RENDER A SIGNAL WHENEVER THE BRAKE LININGS ARE WORN BEYOND A PREDETERMINED AMOUNT, EVEN WHEN THE BRAKES ARE NOT APPLIED. THE INDICATOR OF THE INSTANT INVENTION MAY BE UTILIZED IN CONJUNCTION WITH SUBSTANTIALLY ALL DRUM TYPE BRAKES AND IT IS PREFERRED THAT THE INDICATOR BE OPERATIVELY ASSOCIATED WITH EACH WHEEL OF A VEHICLE PROVIDED WITH A DRUM BRAKE.
Inventors
- 👤 Edward M Maras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:36
CPC Classifications
F; F16; F16D; F16D66/00; F16D66/02; F16D66/021; F16D66/026; F16D66/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |