| 主权项 |
1. A ramp system for a vehicle, comprising;
a base frame adapted to be mounted to the vehicle; a first elongate track member mounted to said base frame; a second elongate track member mounted to said base frame in generally parallel, spaced-apart relation to said first elongate track member, said first and second elongate track members extending generally along a longitudinal direction; a trolley assembly mounted to said first and second elongate track members so that said trolley assembly is moveable along the longitudinal direction; a ramp member pivotally mounted to said trolley assembly so that said ramp member is moveable between a retracted position and an extended position; a support roller mounted to said base frame, said support roller contacting an underside of said ramp member; a handle assembly mounted to said ramp member, said handle assembly comprising a generally elongate rod having a handle end and a lower end and a spring mounted to the lower end of said rod, said spring being mounted to said ramp member, said spring allowing said elongate rod to be articulated with respect to said ramp member, said handle assembly allowing a user to move said ramp member between the retracted and extended positions, a cooperative engagement of said ramp member with said trolley assembly and said support roller lowering a leading edge of said ramp member to a ground surface when said ramp member is being moved to the extended position, the cooperative engagement elevating the leading edge of said ramp member from the ground surface when said ramp member is moved toward the retracted position. |
