Tow truck with underlift control
First Claim
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1. A vehicle comprising:
- a chassis;
an underlift supported by the chassis, the underlift comprising;
a boom including a vehicle engaging device coupled to the boom; and
a movement actuator for moving the boom;
a control system configured to restrict actuation of the movement actuator when the boom moves to a predetermined position;
an operator control coupled to the control system that allows the operator to control the movement actuator after actuation of the movement actuator has been restricted.
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Abstract
A vehicle includes a chassis and an underlift supported by the chassis. The underlift includes a boom including a vehicle engaging device coupled to the boom and a movement actuator for moving the boom. The underlift further includes a control system configured to restrict actuation of the movement actuator when the boom moves to a predetermined position; and an operator control coupled to the control system that allows the operator to control the movement actuator after actuation of the movement actuator has been restricted.
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Citations
25 Claims
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1. A vehicle comprising:
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a chassis; an underlift supported by the chassis, the underlift comprising; a boom including a vehicle engaging device coupled to the boom; and a movement actuator for moving the boom; a control system configured to restrict actuation of the movement actuator when the boom moves to a predetermined position; an operator control coupled to the control system that allows the operator to control the movement actuator after actuation of the movement actuator has been restricted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for controlling the movement of a vehicle underlift boom, comprising:
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causing underlift boom movement in response to an actuating signal from an operator control; generating a position signal; inhibiting underlift boom movement based upon the position signal; and resuming underlift boom movement in response to input from the operator control. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A vehicle underlift supportable by a vehicle chassis, the underlift comprising:
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a vehicle engaging device; a movement actuator for moving the vehicle engaging device; a control system configured to restrict actuation of the movement actuator when the vehicle engaging device moves to a predetermined position; and an operator control coupled to the control system that allows the operator to selectively actuate the movement actuator after actuation of the movement actuator has been restricted.
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23. An underlift control circuit for controlling at least one underlift movement actuator, the control circuit comprising:
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an operator interface configured to apply a control signal to the control circuit; an underlift position sensor configured to apply a position signal to the control circuit; the control circuit configured to operate at least one underlift movement actuator in response to the control signal until the position signal changes in a predetermined way, operation of the underlift movement actuator being inhibited until there is a change in the control signal. - View Dependent Claims (24, 25)
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Specification