Control valve and system
Abstract
Abstract A CONTROL VALVE IS PROVIDED IN A HORIZONTALLY SPLIT BRAKE SYSTEM HAVING SEPARATE FLUID PRESSURE SUPPLIES WHEREIN AT LEAST ONE BRAKE OF THE FRONT AND REAR BRAKE SETS IS CONNECTED IN EACH SYSTEM, AND SAID CONTROL VALVE INCLUDES SEPARATE SPRING-LOADED PROPORTIONING PISTONS GENERALLY OPERABLE IN SAID SYSTEMS IN RESPONSE TO A PREDETERMINED VALUE OF THE FLUID PRESSURES SUPPLIED THERETO FROM SAID FLUID PRESSURE SUPPLIES TO THEREAFTER PROPORTION THE FLUID PRESSURES APPLIED TO THE REAR BRAKES. UPON THE FAILURE OF ONE SYSTEM, THE PROPORTIONING PISTON OF THE OTHER OR OPERATING SYSTEM IS OPERABLE NOT ONLY AGAINST ITS SPRING LOAD BUT ALSO AGAINST THE SPRING LOAD OF THE PROPORTIONING PISTON IN THE FAILED ONE SYSTEM TO INCREASE THE PREDETERMINED VALUE OF THE SUPPLIED FLUID PRESSURE AT WHICH THE PROPORTIONING ACTUATION THEREOF IS EFFECTED.
Inventors
- 👤 Edward J Falk
Bibliographic Details
Claims Analysis
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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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |