Patent ID: 6558299
Filing Date: 2003-05-06
Classification: A63B

Abstract:
An automated spotting device to assist weight lifters in performing weight lifting exercises with barbells, comprising:a pair of smooth shafts; a frame, said frame fixedly holding said smooth shafts vertically and in parallel; a pair of bushings, said bushings in sliding engagement along said smooth shafts; a pair of spotter arms; a spotter arm connecting plate, each of said spotter arms attached to said connecting plate and said connecting plate attached to said bushings; a nut having an internal thread of known profile, said nut attached to said connecting plate; a motor having a shaft, said motor attached to said frame; and a lead screw, said lead screw having an external thread profile matching the profile of the internal thread of said nut, said lead screw passing through said nut, such that said nut and said lead screw are in mating rotational contact, whereby as said DC motor rotates said lead screw, said spotter arms are raised or lowered along said smooth shafts.