LOW PROFILE JACK

摘要

A jack assembly includes a dual threaded screw with a right-hand-threaded section and a left- hand-threaded section. A first drive member mates with the right-hand-threaded section, and a second drive member mates with the left-hand-threaded section. The drive members drive an extendible platform that moves to an extended position when the screw is moved in a first direction, or a retracted position when the screw is moved in a second, opposite direction.