US3560920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake system failure warning circuit
Assignee: Motors Liquidation Co
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Filing: 1968-11-29
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Granted: 1971-02-02
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Expires: 1988-11-29
Abstract
Abstract A CIRCUIT FOR INDICATING FAILURE IN A HYBRID DUAL BRAKING SYSTEM INCLUDING A WARNING LAMP, A NORMALLY CLOSED PRESSURE RESPONSIVE SWITCH AND A NORMALLY OPEN BRAKE PEDAL TRAVEL RESPONSIVE SWITCH CONNECTED IN SERIES ACROSS A SOURCE OF DIRECT CURRENT. THE NORMALLY CLOSED SWITCH RESPONDS TO THE PRESSURE IN THE REAR HALF OF THE SYSTEM AND UNDER NORMAL OPERATING CONDITIONS WILL INTERRUPT THE CIRCUIT TO THE LAMP PRIOR TO COMPLETION OF THE CIRCUIT THROUGH THE BRAKE PEDAL TRAVEL RESPONSIVE SWITCH. UPON LOSS OF PRESSURE TO THE REAR HALF OF THE SYSTEM, THE LAMP IS CONTINUOUSLY ENERGIZED AND UPON LOSS OF PRESSURE TO THE FRONT HALF OF THE SYSTEM, THE LAMP IS MOMENTARILY ENERGIZED.
Inventors
- 👤 Douglas J Wing
- 👤 Bernard G Mazurek Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:13
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/18; B60T17/22; B60T11/00; B60T11/10; B60T11/16; B60T11/20
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |