Hydraulic system with an actuator having independent...

Details Hydraulic system with an actuator having independent... Hydraulic system with an actuator having independent...

2005-12-20

2005-12-20

Lopez, F. Daniel (Department: 3745)

Motors: expansible chamber type

With motive fluid valve

Inlet fluid supplemented by controlled fluid pressurized in...

C091S464000

Reexamination Certificate

active

06976418

ABSTRACT:
A fluid circuit is provided to independently control the flow of fluid into and out of each end of an actuator. This is accomplished by having two different independently controlled valves controlling the flow of fluid into and out of one end of the actuator and by having two other independently controlled valves controlling the flow of fluid into and out of the other end of the actuator. Regeneration of the fluid flow from one end of the actuator to the other end of the actuator is provided by blocking the exhaust flow of fluid to the reservoir by one of the independently controlled valves and redirecting the flow across the other of the independently controlled valves to join with the flow of the pump that is being directed to the other end of the actuator. This arrangement permits a portion or all of the fluid from one end of the actuator to be regenerated to the other end of the actuator.

REFERENCES:
patent: 4437385 (1984-03-01), Kramer et al.
patent: 5220862 (1993-06-01), Schexnayder
patent: 5233909 (1993-08-01), Von Hoene

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