Abstract: Disclosed are a screw body jack which can correct the deformation of a metallic structure with the force derived from screw mechanism and a body jack assembly which makes use of a plurality of body jack elements extending radially from a central bracket piece over an angle of either in excess of 180 degrees or no more than 180 degrees. In the latter case, at least one of the body jack elements is utilized in tension while the others are in compression. The screw body jack may be advantageously utilized in the body jack assembly because of its functionality and simplicity.

Abstract: A vehicle lift having a platform mounted on a base for supporting a vehicle, and having a first link which moves the platform up and down. A table is mounted to the platform and supports the chassis of the vehicle by moving the table up and down by a second link. The table may be movably mounted to the platform and a safety device may be provided for preventing the platform from a sudden fall.