Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1997-02-28
1998-05-05
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
Specific condition
340685, 414699, 414694, 36442407, G08B 2100
Patent
active
057480974
ABSTRACT:
A method and apparatus is disclosed for storing a boom pivotally mounted to a vehicle. The apparatus includes a boom actuator to actuate the boom, a boom sensor to provide a boom signal representative of the position of the boom actuator with respect to a stable reference point and an actuator control assembly responsive to a control signal to manipulate the position of the boom by retracting or extending the boom cylinder. The apparatus also includes a controller responsive to the boom signal and to provide the control signal to the actuator control assembly so the boom is automatically driven from an initial position extended at least partially away from the vehicle to a transport position in a relatively closer proximity to the vehicle by retracting the boom cylinder to drive the boom from the initial position to a transition position and then extending the boom cylinder to drive the boom from the transition position into the transport position. The method includes the steps of detecting a signal indicative of a position of the boom, determining from the signal whether the boom is positioned within a start range, retracting the hydraulic cylinder to bring the boom toward the base of the work vehicle, determining from the signal whether the boom has reached an over-center position, and extending the hydraulic cylinder to bring the boom toward the base of the work vehicle when the boom has reached the over-center position.
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Case Corporation brochure "Loader / Backhoes, 580L, 580 Super L, 590 Super L", 1994.
Case Corporation
Hofsass Jeffery
Lee Benjamin C.
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