Power plants – Pressure fluid source and motor – Condition responsive control of pump or motor displacement
Reexamination Certificate
2005-04-26
2005-04-26
Look, Edward K. (Department: 3745)
Power plants
Pressure fluid source and motor
Condition responsive control of pump or motor displacement
C060S445000
Reexamination Certificate
active
06883313
ABSTRACT:
A pump displacement control arrangement uses the inherent swivel torques of a fluid translating device in cooperation with a proportional force feedback to more consistently and precisely control the displacement of the fluid translating device. The subject invention uses a variable displacement control arrangement having an actuator mechanism coupled to a swash plate of the fluid translating device and controlled by a proportional valve arrangement to control the displacement of the fluid translating device. A force feedback mechanism is disposed between the actuator mechanism and the proportional valve arrangement and provides a more precise and repeatable displacement control.
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Egelja Aleksandar M.
Sorokine Mikhail A.
Srikrishnan Rangamani
Barnes D James
Burrows J. W.
Caterpillar Inc
Finnegan Henderson Farabow Garrett & Dunner
Leslie Michael
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