US3560056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skid control system
Assignee: ZF Active Safety US Inc
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Filing: 1968-12-16
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Granted: 1971-02-02
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Expires: 1988-12-16
Abstract
Abstract A SKID CONTROL SYSTEM ADAPTED FOR OPERATIVE ASSOCIATION WITH THE FLUID ACTUATED BRAKING SYSTEM OF AN AUTOMOTIVE OR SIMILAR TYPE VEHICLE, THE SYSTEM INCLUDING A MODULATING VALVE ASSEMBLY FOR SELECTIVELY CONTROLLING THE FLOW OR SUPPLY OF HYDRAULIC BRAKE ACTUATING FLUID BETWEEN THE MASTER BRAKE CYLINDER OF THE VEHICLE AND ONE OR MORE OF THE WHEELS CYLINDER THEREOF, THE MODULATING VALVE INCLUDING A PRESSURIZED CYLINDER AND BEING OPERABLE IN RESPONSE TO AND ACTUATABLE BY AN INCREASE IN FLUID PRESSURE FROM A SOURCE THEREOF ANCULLARY TO THE HYDRAULIC BRAKE SYSTEM.
Inventors
- 👤 William Stelzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:10
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/34; B60T8/42; B60T8/4208; B60T8/4225; B60T8/4241; B60T8/4233
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 |