US3606491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-wheel lock brake control for automotive vehicle
Assignee: Eaton Corp
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Filing: 1969-02-24
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Granted: 1971-09-20
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Expires: 1989-02-24
Abstract
Abstract ANTI-WHEEL LOCK CONTROL FOR THE BRAKING SYSTEM OF AN AUTOMOTIVE VEHICLE TO AVOID SKIDDING BY RELEASING THE REAR BRAKES IF THE ROTATIONAL WHEEL VELOCITY BECOMES SIGNIFICANTLY LESS THAN THE APPARENT GROUND VELOCITY OF THE VEHICLE. THE ANTI-WHEEL LOCK CONTROL IS TEMPORARILY DISABLED BY A TIME DELAY CIRCUIT IF THE REAR BRAKES ARE NOT RE-APPLIED AUTOMATICALLY WITHIN A TIME INTERVAL SUFFICIENT FOR THE WHEEL LOCK-UP CONDITION TO BE RELIEVED. THIS TIME DELAY CIRCUIT MONITORS THE PERFORMANCE OF THE ANTI-WHEEL LOCK CONTROL AND ALSO CORRECTS THE ERRORS IN THE APPARENT VEHICLE VELOCITY CAUSED BY TRAVEL DOWNHILL OR UPHILL.
Inventors
- 👤 William J Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:03
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/17; B60T8/176; B60T8/1764
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |