Priority flow divider

Details Priority flow divider Priority flow divider

1980-02-11

1982-01-05

Hershkovitz, Abraham

Motors: expansible chamber type

Fluid supply through diverse paths to single expansible chamber

91516, 91517, 137101, F01B 2502

Patent

active

043087876

ABSTRACT:
A priority flow divider is disclosed for dividing hydraulic fluid flow between a steering circuit and an auxiliary circuit thereby providing better efficiency and greater productivity for the auxiliary circuit. The priority flow divider includes a cylindrical housing having a slidable spool valve therein, and the housing further includes an inlet port connected to the steering pump in the steering circuit, a discharge port connected to the steering valve, in the steering circuit, and a discharge port connected to the auxiliary hydraulic circuit. The spool valve has enlarged cylindrical portions which are connected by recessed connecting portions of a reduced diameter. When the steering valve is in its neutral or non-steering position, the enlarged cylindrical portions of the spool valve selectively engage interior wall portions of the cylindrical housing to define an interior fluid connecting chamber between the inlet port from the steering pump and the discharge port to the auxiliary circuit whereby the fluid flow from the steering pump is diverted to the auxiliary circuit except for a small pilot flow. Actuation of the steering valve causes the spool valve to be shifted to define an interior fluid connecting chamber between the inlet port from the steering pump and the discharge port to the steering valve whereby all of the fluid flow is directed to the steering valve and none to the auxiliary circuit.

REFERENCES:
patent: Re30291 (1980-06-01), Goff
patent: 2910971 (1959-11-01), MacDuff
patent: 3568868 (1971-03-01), Chichester
patent: 3584537 (1971-06-01), Schutz
patent: 3703186 (1972-11-01), Brewer
patent: 3841095 (1974-10-01), Baker
patent: 4009730 (1977-03-01), Starling
patent: 4154257 (1979-05-01), Adachi
patent: 4192337 (1980-03-01), Alderson

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