Hydrostatic control device, particularly steering device

Details Hydrostatic control device, particularly steering device Hydrostatic control device, particularly steering device

1985-07-19

1986-03-11

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

60384, 13762521, F04C 210, F16D 3102

Patent

active

045753210

ABSTRACT:
The invention relates to a hydrostatic steering control device of the type having two motor ports connectable to a servomotor and a metering unit for metering the flow of fluid to or from the servomotor in accordance with the rotational movement of a steering wheel for operating the control device. The invention is directed to a way of balancing the distributing valve of the control device by subjecting opposite sides thereof to high and intermediate pressure zones and providing a throttle gap between the high and intermediate pressure zones and a second oppositely acting throttle gap between the intermediate pressure zone and a third zone of lower pressure.

REFERENCES:
patent: 3568448 (1972-04-01), Woodling
patent: 3597128 (1971-08-01), Venable
patent: 4232708 (1980-11-01), Miller
patent: 4411607 (1983-10-01), Wisthof et al.
patent: 4439119 (1984-03-01), Petersen et al.

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