US Patent 9126522 In-floor vehicle ramp

A ramp system includes a base frame adapted to be mounted to a vehicle. First and second elongate track members are mounted to the base frame in generally parallel, spaced-apart relation so that they extend along a longitudinal direction. A trolley assembly is moveably mounted to the first and second elongate track members so that the trolley assembly is moveable along the longitudinal direction between retracted and extended positions. A ramp member is pivotally mounted to the trolley assembly. A support roller mounted to the base frame supports a portion of the ramp member. A handle assembly mounted to the ramp member allows a user to move the ramp member between the retracted and extended positions.