Patent ID: 6789785
Filing Date: 2004-09-14
Classification: B66F

Abstract:
A hydraulic lifting device that is rapidly lifted by a mechanical linkage to a lifting support point prior to using a hydraulic system to actually raise a vehicle, the lifting device comprising:two vertical side plates, a lifting arm and a saddle support arm at a front end thereof; a clearance hole through one of the vertical side plates at a predetermined position; the saddle support arm has an axial rod at a predetermined position; a rotating shaft protrudes through the clearance hole provided in one of the vertical side plates; the rotating shaft is attached integrally with one end of the mechanical linkage and another end of the linkage is attached integrally with the axial rod on the saddle support arm; when the rotating shaft is rotated, the linkage moves forward and the axial rod is rotated in the saddle support arm so that the lifting arm is rapidly raised through space to the lifting support point of the vehicle to be lifted by mechanical motion.