US3556609A
Expired / Lapsed
US
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Hydraulic pressure modulator
Assignee: Bendix Corp
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Filing: 1968-09-30
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Granted: 1971-01-19
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Expires: 1988-09-30
Abstract
Abstract AN ANTI-SKID BRAKING SYSTEM WHICH INCLUDES A MODULATOR FOR CONTROLLING COMMUNICATION BETWEEN THE MASTER CYLINDER AND THE BRAKES. THE MODULATOR ALLOWS NORMAL COMMUNICATION UNTIL A SKID CONDITION IS SENSED. UPON SENSING THE SKID CONDITION, THE MODULATOR RELEASES FLUID PRESSURE FROM THE BRAKES UNTIL THE SKID CONDITION NO LONGER EXISTS AND, THEREAFTER, REAPPLIES THE FLUID PRESSURE TO THE BRAKES. THIS CYCLE IS REPEATED AS MANY TIMES AS THE SKID CONDITION IS SENSED.
Inventors
- 👤 Stanley I Macduff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:02
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/66; B60T13/72; B60T8/00; B60T8/18; B60T8/1837; B60T8/185; B60T8/32; B60T8/34; B60T8/42; B60T8/4208; B60T8/4225; B60T8/4241; B60T8/425
Claims Analysis
Total Claims: 0
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References 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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |