Patent US3606492A successfully refreshed from Google Patents.
US3606492A
Expired / Lapsed
US
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Skid control system
Assignee: ZF Active Safety US Inc
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Filing: 1969-03-07
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Granted: 1971-09-20
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Expires: 1989-03-07
Abstract
Abstract A SKID CONTROL SYSTEM FOR A WHEELED VEHICLE HAVING A PLURALITY OF WHEELS AND A BRAKE SYSTEM FOR THE WHEELS WITH AT LEAST TWO OF THE WHEELS BEING CONNECTED TO A COMMON BRAKE PRESSURE MODULATING DEVICE WHICH IS ACTUATED TO RELIEVE BRAKE PRESSURE IN RESPONSE TO BOTH OF THE TWO WHEELS BEING IN A SKID CONDITION AND IN ONE FORM, ACTUATED TO REAPPLY BRAKE PRESSURE IN RESPONSE TO EITHER OF THE TWO WHEELS SPINNING UP OR, IN ANOTHER FORM, ACTUATED TO REAPPLY BRAKE PRESSURE IN RESPONSE TO BOTH OF THE TWO WHEELS SPINNING UP.
Inventors
- 👤 Edward J Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:55
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/17; B60T8/176; B60T8/1761; B60T8/17613
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 |