Motors: expansible chamber type – With motive fluid valve – Relatively movable inlet and exhaust valves for single...
Patent
1996-08-27
1998-11-17
Lopez, F. Daniel
Motors: expansible chamber type
With motive fluid valve
Relatively movable inlet and exhaust valves for single...
25112907, F15B 1304
Patent
active
058362304
ABSTRACT:
A hydraulic system with control valves that can control the movement of an actuator. The system has a first control valve and a second control valve that each contain solenoids that can switch the valves between open and closed positions. The valves are connected to a digital controller that can energize the solenoids. The controller controls the sequence of energizing such that when the first valve is opened the second valve is closed, and when the second valve is opened the first valve is closed. The valves are connected to the actuator so that the actuator moves in first direction when the first valve is opened and in a second opposite direction when the second valve is opened. The valves have an internal pressure balance that allows the solenoids to quickly switch into the open position using minimal power. The solenoids also have magnets that maintain the valves in the open position when power is terminated.
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Lopez F. Daniel
Sturman Oded E.
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