Power plants – Pressure fluid source and motor – Having distinct cooling or lubricating structure
Patent
1996-09-13
1998-07-14
Lopez, F. Daniel
Power plants
Pressure fluid source and motor
Having distinct cooling or lubricating structure
60464, 60465, 60476, 60441, 417371, F16D 3102
Patent
active
057786712
ABSTRACT:
An electrohydraulic control system that includes a bidirectional electric motor responsive to application of electrical power for rotation in either of two directions, and a hydraulic pump coupled to the motor and having ports for supplying hydraulic fluid in either of two flow directions as a function of direction of rotation of the electric motor. A hydraulic actuator is coupled to the pump for receiving fluid in either of two flow directions and performing work as a function thereof. An electronic controller applies electrical power to the electric motor so as to obtain a desired level of work at the actuator. The electronic controller includes one or more sensors operatively coupled to the actuator for applying electrical power to the motor as a function of motion at the actuator. The bidirectional electric motor in the preferred embodiments of the invention comprises a fluid-cooled motor, and the system includes valves for routing hydraulic fluid through the motor housing between the pump and the actuator.
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Machine Design, Jan. 25, 1996, p. 26.
Bloomquist James V.
Niemiec Albin J.
Lopez F. Daniel
Vickers, Inc.
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