Hydraulic brake pressure control valve assembly
Abstract
Abstract A HYDRAULIC BRAKE PRESSURE CONTROL VALVE ASSEMBLY COMPRISING A STEPPED HYDRAULIC PISTON AND A CONTROL VALVE WHICH IS ON-OFF CONTROLLED REPEATEDLY BY THE RECIPROCATING MOVEMENT OF SAID PISTON AND BEYOND A PREDETERMINED HYDRAULIC BRAKE PRESSURE VALUE AND FOR GRADUALLY INCREASING THE HYDRAULIC PRESSURE FOR AUTOMOTIVE REAR WHEELS SO FAR AS A CONTINUED AND CONSIDERABLE BRAKE APPLICATION IS BEING PERFORMED, WHEREIN THE IMPROVEMENT RESIDES IN SUCH A POINT THAT THE VALVE AND ITS RETURN SPRING ARE MOUNTED WITHIN A VALVE CHAMBER FORMED IN A PLUG MEMBER CLOSING AN OPEN END OF A CYLINDER WHICH HOUSES SLIDABLY SAID PISTON, THE LATTER BEING ARRANGED AND MOUNTED AXIALLY IN OPPOSITION TO SAID VALVE AND ITS RETURN SPRING, FOR MAKING MAIN WORKING PARTS, ESPECIALLY SAID PISTON, EASIER TO MANUFACTURE AND ASSEMBLE, IN ADDITION TO MAKE THE WHOLE CONTROL VALVE ASSEMBLY IN A HIGHLY COMPACT AND SIMPLE DESIGN.
Inventors
- 👤 Tsuneo Kawabe
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |