US3588189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake control system
Assignee: Boeing North American Inc
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Filing: 1969-06-05
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Granted: 1971-06-28
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Expires: 1989-06-05
Abstract
Abstract A BRAKE CONTROL SYSTEM FOR A VEHICLE WHICH PERMITS NORMAL OPERATION OF ALL OF THE BRAKES UNDER MODERATE BRAKING LOADS, AND, UNDER HEAVIER BRAKING LOADS, DETECTS MINOR AND MAJOR TENDENCIES OF CERTAIN WHEELS TO LOCK AND CONSTANTLY MODULATES THE BRAKING EFFORT TO MAINTAIN A CONDITION OF PARTIAL WHEEL SLIP WHILE PREVENTING WHEEL LOCK. THE INVENTION HAS PARTICULAR APPLICATION TO A HYDRAULIC BRAKE SYSTEM.
Inventors
- 👤 James C Cumming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:32
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/34; B60T8/42; B60T8/4208; B60T8/4225; B60T8/4241; B60T8/425; B60T8/17; B60T8/1701; B60T8/1708
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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |