Hydraulic apparatus used for operating vehicles

Details Hydraulic apparatus used for operating vehicles Hydraulic apparatus used for operating vehicles

1982-07-07

1986-07-15

Look, Edward K.

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

60422, 60430, 91514, 91516, 91532, F15B 1306, F15B 1309

Patent

active

045998566

ABSTRACT:
A hydraulic apparatus for a vehicle having a propulsion engine comprises a control valve, a flow dividing valve, pumps driven by the engine for delivering fluid to the valves, and steering and implement circuit operatively connected to the control and flow dividing valves. The control valve includes plunger provided with orifices having variable degrees of openings and a spool connected to the plunger and the flow dividing valve includes a spool. With the hydraulic apparatus this constructed, fluid having an amount necessary for operating the steering circuit is always fed thereinto by operatively connecting the spools of the control and flow dividing valves and sharing the fluid into the steering and implement circuit by controlling the fluid dividing valve in accordance with pressure difference between the upstream and downstream portions of the orifices in the control valve.

REFERENCES:
patent: 3279558 (1966-10-01), Allen et al.
patent: 3355994 (1967-12-01), Malott
patent: 4306488 (1981-12-01), Uehara

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