ACTIVE BALANCE APPARATUS

摘要

An active balance device (10) comprises a saddle (16) which is moved by a single motor (24) in pitch, yaw and roll. A pair of rotatable shafts (34, 38) are disposed at an angle to the vertical and are coupled to offset bearing mountings (50, 54), as a result of which, during rotation of the shafts (34, 38) pitch and yawing motions are imparted to the seat. Roll is produced by a bent rod (62) in one of the bearing mountings (50).