Patent ID: 6095748
Filing Date: 2000-08-01
Classification: B60P

Abstract:
A vehicle lifting apparatus comprising:a riser having a top end and a riser base end, the riser pivotably mounted to a frame proximate the riser base end at a base frame pivot;a boom having a free end and a boom base end, the boom base end mounted to the riser proximate the riser base end;a riser plate,the riser plate mounted to the riser proximate to the top end of the riser;a camming crank pivotably attached to the riser plate;the camming crank hingeably connected to the riser plate to form a riser pivot;an arm anchor mounted to the frame;a link arm for connecting the anchor to the camming crank,the link arm hingeably connected to the arm anchor to form an arm anchor pivot, andthe link arm hingeably connected to the camming crank to form a crank arm pivot; anda crank actuator having an upper actuator end and a lower actuator end,the upper actuator end hingeably connected to the camming crank to form an actuator crank pivot,the lower actuator end pivotably mounted to the riser, proximate the riser base end to form a base actuator pivot, andthe crank actuator for rotating the camming crank about the riser pivot, to pivot the riser on the base frame pivot, selectively toward or away from the arm anchor, to respectively raise or lower the free end of the boom.