Load-sensing active hydraulic control device for multiple actuat

Details Load-sensing active hydraulic control device for multiple actuat Load-sensing active hydraulic control device for multiple actuat

1992-12-28

1994-09-20

Look, Edward K.

Power plants

Pressure fluid source and motor

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

60468, 91446, 91517, 91461, F16D 3102

Patent

active

053478118

ABSTRACT:
A device for controlling multiple hydraulic actuators to protect a system from an overpressure caused by increasing the load on an individual actuator. By controlling the supply of hydraulic fluid to a pair of cylinders each associated with a pilot valve so that each cylinder always has enough fluid pressure to operate, the device of the present invention prevents the shutdown of the device caused by too much fluid going to the actuator operating at the maximum pressure. Thus all actuators continue to operate even if one is overpressured.

REFERENCES:
patent: 4142368 (1979-03-01), Mantegani
patent: 4353286 (1982-10-01), Wetter
patent: 4508013 (1985-04-01), Barbagli
patent: 4938023 (1990-07-01), Yoshino
patent: 4986072 (1991-01-01), Kubomoto
patent: 5067389 (1991-11-01), Germain
patent: 5107753 (1992-04-01), Ioku
patent: 5174190 (1992-12-01), Ikari

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