Patent ID: 7520225

Claim:
A garage-installable, dual-vehicle turntable comprising: a subframe having a vertical central pivot axis, and a dual-lobe rail cam that is quadrilaterally symmetrical about a pair of perpendicular planes passing through said central pivot axis; a carriage rotatably mounted atop said subframe, said subframe and said carriage having associated therewith both a circular track with a center coincident said central pivot axis, and a plurality of rollers which are angularly spaced about said central pivot axis and in continual contact with said track, said rollers serving to reduce friction as said carriage rotates on said subframe about said central pivot axis; and a pair of platforms mounted on the carriage, each of said platforms sized to support a single vehicle and having a cam follower that tracks the rail cam as the carriage rotates, said platforms being linearly and simultaneously movable back and forth in opposite directions, with respect to one another, by the interaction of the cam followers with the rail cam as the carriage rotates about the central pivot axis, from a maximum spaced-apart relationship that is optimal for driving a vehicle in a forward direction through a garage opening onto each of the platforms, to a minimum spaced-apart relationship that enables rotation of the vehicle-laden carriage within a narrow garage through an angle of 180 degrees, and back to the maximum spaced-apart relationship that is optimal for driving a vehicle in a forward direction off each of the platforms through the garage opening.