Electrical brake lining wear indicator
Abstract
Abstract A BRAKE LINING WEAR INDICATING APPARATUS OF THE TYPE INCLUDING AN ELECTRICAL CONDUCTOR EMBEDDED IN A BRAKE LINING WHEREBY SUFFICIENT BRAKE LINING WEAR COMPLETES A CIRCUIT TO ENERGIZE A SIGNAL WHEN THE CONDUCTOR ENGAGES THE ELECTRICALLY CONDUCTIVE BRAKE DRUM. THE CONDUCTOR IS EMBEDDED IN THE LINING IN AN ANGULAR RELATIONSHIP SUCH THAT THE TERMINAL END OF THE CONDUCTOR MUST MOVE WITH THE LINING AS THE LINING AND THE CONDUCTOR EXPAND IN RESPONSE TO HEAT GENERATED DURING APPLICATION OF THE BRAKES. THIS ARRANGEMENT ASSURES CONTACT BETWEEN THE CONDUCTOR AND THE BRAKE DRUM SURFACE REGARDLESS OF THE AMOUNT OF EXPANSION OF THE BRAKE LINING AND THE CONDUCTOR OR THE DIFFERENCES IN THE COEFFICIENTS OF EXPANSION BETWEEN THE CONDUCTOR AND THE BRAKE LINING MATERIAL.
Inventors
- 👤 Richard C Rike
- 👤 Burlin B Brombaugh
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 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 |