Unit for controlling a plurality of hydraulic actuators

Details Unit for controlling a plurality of hydraulic actuators Unit for controlling a plurality of hydraulic actuators

1993-07-27

1995-02-07

Michalsky, Gerald A.

Power plants

Pressure fluid source and motor

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

91446, 91518, 137596, F15B 1308

Patent

active

053866975

ABSTRACT:
Hydraulic actuators are fed by a single flow-rate generator, each being connected to it through a proportional directional valve, the unit including at least one auxiliary valve fed by the flow-rate generator and producing a pressure which is normally equal to a regulation pressure increased by a constant, and in each proportional directional valve an actuating device causes the compensating spool to respond to the pressure produced by the auxiliary valve.

REFERENCES:
patent: 3987622 (1976-10-01), Johnson
patent: 4165613 (1979-08-01), Bernhoft et al.
patent: 4617854 (1986-10-01), Kropp
patent: 4736770 (1988-04-01), Rousset et al.
patent: 4739617 (1988-04-01), Kreth et al.
patent: 5150574 (1992-09-01), Hirata et al.
patent: 5222426 (1993-06-01), Marcon et al.

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