Tow truck with underlift control
DC
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; and
a position sensor that is a switch that breaks a movement actuating circuit between the operator control and the movement actuator,wherein the control system is configured to wait until the operator has released an operator control that was causing a downward motion before allowing the operator to then signal the movement actuator to actuate further downward.
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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.
31 Citations
20 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; and a position sensor that is a switch that breaks a movement actuating circuit between the operator control and the movement actuator, wherein the control system is configured to wait until the operator has released an operator control that was causing a downward motion before allowing the operator to then signal the movement actuator to actuate further downward. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. 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; and a position sensor that is a switch that breaks a movement actuating circuit between the operator control and the movement actuator, wherein the position sensor is a switch that resets when the boom has moved back to or above the predetermined position from a position below the predetermined location. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification
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Litigation Data
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Current AssigneeJerr-Dan Corporation (Oshkosh Corporation)
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Original AssigneeJerr-Dan Corporation (Oshkosh Corporation)
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InventorsKresge, Bradley S., Addleman, Jeffrey L.
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Primary Examiner(s)Tran; Khoi
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Assistant Examiner(s)KING, RODNEY P
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Application NumberUS11/801,999Publication NumberTime in Patent Office1,411 DaysField of Search414/563, 701/36US Class Current414/563CPC Class CodesB60P 3/125 by supporting only part of ...B66F 9/061 characterised by having a l...
