Turning-arm robot for transporting objects has fourth drive wheel on outer end of second turning arm

摘要

The robot has a third drive wheel (54) fixed to the end of the first turning arm (24) and a fourth drive wheel (56) on the outer end of the second turning arm (32) with its axis (58) parallel to the axes (e.g. 20) of the turning arms. The fourth drive wheel is fixed against rotation to a working apparatus (50) carried by the second turning arm. An endless belt (60) runs round the third and fourth drive wheels.