Power plants – Pressure fluid source and motor – Condition responsive control of motive fluid flow
Reexamination Certificate
2007-08-07
2007-08-07
Leslie, Michael (Department: 3745)
Power plants
Pressure fluid source and motor
Condition responsive control of motive fluid flow
C091S454000
Reexamination Certificate
active
11214905
ABSTRACT:
A hydraulic control system has an actuator with first and second chambers, first and second valves having elements movable to fill and drain the first and second chambers, and at least one sensor configured to generate a load signal indicative of a load on the fluid actuator. The system has an interface device movable to generate a desired velocity signal of the actuator. The system has a controller in communication with the first and second valves, the at least one sensor, and the interface device. The controller is configured to move the element of the first valve to a position based on the desired velocity signal and to move the element of the second valve to a position based on the load signal and a desired pressure within the second chamber.
REFERENCES:
patent: 5784945 (1998-07-01), Krone et al.
patent: 6694860 (2004-02-01), Yoshino
patent: 6718759 (2004-04-01), Tabor
patent: 6732512 (2004-05-01), Pfaff et al.
patent: 6880332 (2005-04-01), Pfaff et al.
patent: 2003/0121408 (2003-07-01), Linerode et al.
patent: 2005/0051025 (2005-03-01), Nielsen et al.
patent: 2406363 (2005-03-01), None
Egelja Aleksandar
Ma Pengfei
Verkuilen Michael T.
Zhang Jiao
Caterpillar Inc
Finnegan Henderson Farabow Garrett & Dunner
Leslie Michael
Shin Caterpillar Mitsubishi Ltd
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