Patent ID: 6592139
Filing Date: 2003-07-15
Classification: B60P

Abstract:
A wheeled transport vehicle comprising, in combination:a frame including a first frame member and a second frame member, said second frame member being slidably movable relative to said first frame member between an extended position and a retracted position; a tongue projecting from and connected to said second frame member operable to move said second frame member between said extended position and said retracted position when said tongue moves relative to said first frame member; wheel mounting members pivotally connected to said first frame member; wheels rotatably disposed on said wheel mounting members; and mechanical linkage interconnecting said wheel mounting members and said second frame member responsive to movement of said second frame member from said extended position to said retracted position to pivotally move said wheel mounting members and move said wheels upwardly to lower said frame and further responsive to movement of said second frame member from said retracted position to said extended position to pivotally move said wheel mounting members and move said wheels downwardly to raise said frame.