Patent ID: 6565068
Filing Date: 2003-05-20
Classification: B66F

Abstract:
An economical power unit for use with a jack stand comprising:a base having a rectangular bottom with a forward end for receiving a jack stand therein and a rearward end for receiving an actuator shaft, a rear flange extending upward from the bottom and having a central aperture therein, and left and right side flanges extending upward from the bottom with each side flange having an aperture near the forward end thereof and having an increased thickness along the upper portion thereof providing a longitudinal recess formed in the lower portion on the inner surfaces of the flange; a screw threaded actuator shaft having a distal end and a proximal end extending through the aperture of the rear flange with the proximal end rotatably retained within the aperture and further adapted to be engaged by an external handle to facilitate rotation thereof; a sliding block having a rectangular bottom and left and right sides thereof slideably retained within the longitudinal recesses of the side flanges of said base, and having a forward end and a rearward end with a central threaded aperture therein for receiving the forward end of said threaded actuator shaft; a pair of lift arms acting in parallel each having a forward end and a rearward end with the rearward end pivotally attached to the respective side of said block; a pair of connecting arms acting in parallel each having a forward end pivotally attached at the aperture near the forward end of the respective side flange of said base, and having a rearward end pivotally attached at a pivot point on said lift arm; and a pair of leveling pads each attached to the forward end of said respective lift arm and adapted to provide a level lifting platform thereon.