Control valve
Abstract
Abstract A CONTROL VALVE FOR USE IN A DUAL HYDRAULIC BRAKE SYSTEM HAVING A SWITCH ACTUATING PISTON MOVABLE TO OPPOSED TRANSLATORY POSITIONS TO ENERGIZE A DRIVER WARNING CIRCUIT UPON THE FAILURE OF ONE OF THE DUAL SYSTEMS. A PROPORTIONING VALVE IS ALSO PROVIDED AND IS OPERABLE GENERALLY IN RESPONSE TO THE SUPPLIED FLUID PRESSURE OF ONE OF THE SYSTEMS TO EFFECT A PROPORTIONALLY REDUCED APPLICATION THEREOF THROUGH THE CONTROL VALVE. THE PROPORTIONING VALVE HAS ONE END THEREOF SLIDABLE IN AN END OF THE SWITCH ACTUATING PISTON, AND UPON THE TRANSLATORY MOVEMENT OF SAID SWITCH ACTUATING PISTON TO ONE OF ITS TRANSLATED POSITIONS, AND ADDITIONAL AREA ON SAID PROPORTIONING VALVE IS EXPOSED TO THE SUPPLIED FLUID PRESSURE WHICH THEREAFTER EFFECTS A DIFFERENT PROPORTIONALLY REDUCED APPLIED FLUID PRESSURE.
Inventors
- 👤 Joseph E Papin
- 👤 Stanley L Stokes
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 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 |