Power steering gear assembly
Abstract
Abstract A POWER STEERING GEAR ASSEMBLY INCLUDING A CENTRALLY BORED RACK TOOTHED PISTON DIVIDING A POWER CYLINDER IN A PAIR OF FLUID PRESSURIZED CHAMBERS, A SECTOR GEAR MESHING WITH THE PISTON, A VALVE ASSEMBLY COMMUNICATING THE PRESSURE CHAMBERS WITH A SOURCE OF PRESSURIZED FLUID AND INCLUDING A PAIR OF SLEEVE VALVES NESTED TOGETHER IN TELESCOPIC RELATION, A CENTRALLY BORED WORM CONNECTED TO THE OUTER SLEEVE VALVE FOR JOINT ROTATION AND EXTENDING INTO THE BORE OF AND CONNECTED TO THE PISTON TO CAUSE ROTATION OF THE WORM IN RESPONSE TO AXIAL MOVEMENT OF THE PISTON, AND OPERATING SHAFT CONNECTED TO THE INNER SLEEVE VALVE FOR JOINT ROTATION AND A TORSION ROD PROVIDING FOLLOW-UP MOVEMENTS BETWEEN THE SLEEVE VALVES, THE TORSION ROD EXTENDING INTO THE BORE OF THE WORM, WHICH WORM BORE IN TURN COMMUNICATES CERTAIN AXIAL SLOTS FORMED IN THE OUTER SLEEVE VALVE WITH THE PRESSURE CHAMBER SPACED FARTHEST THEREFROM, OTHER AXIAL SLOTS FORMED IN THE OUTER SLEEVE VALVE OPENING DIRECTLY TO THE PRESSURE CHAMBER IMMEDIATELY ADJACENT THE VALVE ASSEMBLY AND FLUID INLET AND OUTLET PORTS COMMUNICATING WITH THE AXIAL SLOTS THROUGH THE INNER SLEEVE VALVE.
Inventors
- 👤 Fredrick D Venable
- 👤 Raymon L Goff
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |