Patent ID: 6415686
Filing Date: 2002-07-09
Classification: F16H,Y10T

Abstract:
A compact self-contained power assembly comprising opposed aligned upper and lower housing portions, each being of open box shape having a horizontal wall and side walls to comprise a closed rectangular housing having spaced parallel top and bottom walls, one of said upper and lower housing portions rotatably mounting worm gear in a vertical plane and having a fixed axis, a frame disposed in the housing between and parallel to the top and bottom walls and supported independent of the side walls of the housing, the frame mounting a worm on a fixed axis in the vertical plane with the worm gear, and a motor inside the housing and mounted on and surrounded by the frame and operatively driving the worm, a plurality of first vertically disposed threaded means extending between one of the horizontal walls and the frame, tubular spacers surrounding each first threaded means to space the frame from the horizontal wall to a selected height at which the worm meshes with the worm gear, the tubular spacers being selected from a group of tubular spacers of various lengths to complement the diameter of a selected worm gear from worm gears of different diameters.