Coupling assembly and application to driven coupling, robotic arm and dual drive

摘要

A coupling comprises at least an inner annular member, an intermediate annular member and an outer annular member. The intermediate and outer annular members are positioned with respect to one another and with respect to the inner member by driven gear wheels acting on gear teeth associated with the inner and intermediate members. By coupling the outer member of one coupling of a series of couplings to the inner member of the next coupling of the series, a robot arm may be constructed in which drive can be transmitted from one end of the series to the other. By changing the potions of the members of the couplings in the series, the orientation of the robot arm may be change