Patent ID: 7547289

Claim:
An apparatus for manipulating the shoulder joint of the left or right arm of a human user, said apparatus comprising: a frame including spaced apart first and second mounting locations; an arm carriage configured to manipulate said shoulder joint of said user, said arm carriage configured to be mounted to one of said first and second mounting locations of said frame; a power unit configured to provide power upon control by said user, said power unit configured to be mounted to the other of said first and second mounting locations of said frame; a linkage intermediate said arm carriage and said power unit, said linkage configured to transfer power from said power unit to said arm carriage; said arm carriage, said power unit, and said linkage configured to allow said arm carriage and said power unit to be switched between said first and second mounting locations and operated in alternating modes, such that in a first operating mode said arm carriage can manipulate the right arm of said user, and such that in a second operating mode said arm carriage can manipulate the left arm of said user.