Power plants – Pressure fluid source and motor – Methods of operation
Patent
1994-10-31
1996-07-23
Nguyen, Hoang
Power plants
Pressure fluid source and motor
Methods of operation
91361, 91459, 91461, F16D 3100, F15B 1316
Patent
active
055378188
ABSTRACT:
A method for controllably moving an implement is provided. The implement is connected to a work machine and is movable between first and second implement positions in response to operation of a hydraulic actuator. The method includes a joystick with first and second positions and a neutral position. The joystick is normally biased in a neutral position and is movable between the first and second positions. The method senses the position of the joystick and responsively generates a joystick position signals The joystick maintained at the first and second detent positions in response to manual movement of the joystick to the respective first and second detent positions. The joystick is released from the detent position in response to receiving a release detent signal. The method senses the position of the work implement with respect to the work machine. The method provides hydraulic fluid flow to the hydraulic actuator in response to a magnitude of an electrical valve signal. The method receives the joystick position signal, responsively delivers the electrical valve signal. The magnitude of the electrical valve signal is proportional to the joystick position signal. The method compares the implement position signal with a first detent position and a second detent position and responsively produces the release detent signal.
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Application Ser. No. 07/889571--U.S. Pat. No. 5,333,533 issued Aug./02/1994--Pantent issued but copy not yet received by Caterpillar.
Hosseini Javad
Schenkel Nathan T.
Schimpf James E.
Caterpillar Inc.
Nguyen Hoang
Yee James R.
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