Hydraulic control system utilizing a plurality of branch passage

Details Hydraulic control system utilizing a plurality of branch passage Hydraulic control system utilizing a plurality of branch passage

1992-03-12

1994-05-24

Look, Edward K.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Electrical input and feedback signal means

91392, 137599, 137601, F15B 1316

Patent

active

053138716

ABSTRACT:
A hydraulic control system for controlling an actuator has a cylinder and a piston, and an oil pump. A first passage is communicated with the oil pump, and a second passage is communicated with the cylinder of the actuator. A plurality of branch passages are connected in parallel between the first and second passages, and a valve is provided in each branch passage. The hydraulic control system has a flow rate setting device for operating each valve thereby applying a predetermined quantity of oil to the cylinder of the actuator to shift the piston a desired distance.

REFERENCES:
patent: 2825306 (1958-03-01), Buri
patent: 3010316 (1961-11-01), Snyder
patent: 3081942 (1963-03-01), Maclay
patent: 3176714 (1965-04-01), Smith et al.
patent: 4020862 (1977-05-01), Bohnlein et al.
patent: 4030523 (1977-06-01), Cram et al.
patent: 4518011 (1985-05-01), Stoll

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