Motors: expansible chamber type – With motive fluid valve – Valved piston
Patent
1979-11-26
1982-07-06
Maslousky, Paul E.
Motors: expansible chamber type
With motive fluid valve
Valved piston
91378, 251270, 13762569, F15B 910, F16K 3150
Patent
active
043376886
ABSTRACT:
An adjustable guide pin arrangement for an integral power steering gear is provided. A reciprocating valve is provided within the piston of the gear to selectively distribute pressurized fluid to the end of the piston for steering action. An input shaft engages the valve to move the valve providing the input signal. An output pinion engages the piston along the side. The guide pin is mounted in the piston and has two pairs of tapered flat guide surfaces at its distal end. One pair of guide surfaces engages a corresponding tapered slot in the valve for each adjusted position. Screw threads are provided to adjustably move the pin inward for less clearance and outwart for more clearance between the guide surfaces and the sides of the slot. The taper of the distal end of the pin is approximately 2.degree.-21/2.degree.. Each quarter turn preferably provides a differential clearance of approximately 0.001 inch. A tool-engaging slot on the head of the pin provides for easy visual adjustment during assembly.
REFERENCES:
patent: 1423178 (1922-07-01), Brabson
patent: 1778865 (1930-10-01), Moseley
patent: 2179165 (1939-11-01), Sifkovitz
patent: 2532815 (1950-12-01), Kindsvatter
patent: 4088063 (1978-05-01), Sheppard
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