Push bar for pushing a stuck vehicle
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United States of America Patent
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Aug 20, 2013
Grant Date -
Jun 11, 2009
app pub date -
Apr 3, 2006
filing date -
Apr 6, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
Device that uses the force of one or several persons to help a stuck vehicle get free. It comprises a set of chains of blocks (2) to put in front of the wheels and that are connected by straps (3.6) to a system that will pull them under the wheels while pushing the car by reaction. The forces come from a lever system consisting of a main bar with a triangular part fixed underneath and near its front end. When the operator lifts the bar, the displacement of the extremities of the triangular part away from the wheels creates a pull on the straps while the front end of the bar pushes the car. The blocks become the fulcrum of this lever system. Alternately, a winch fixed on the car bumper pulls on the straps via deviation rollers or rings, transmitting the reaction pushing forces to the car rear part.
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