Abstract: A flexible power transmission means comprising an assembly of a pair of spaced, generally parallel chains, each constructed of a plurality of sets of interleaved links. Each set is joined to its next adjacent set by a pin, each pin serving both chains. Generally trapezoidal-shaped load blocks are located between the chains and having cut-outs in the sides locating the chains. The load blocks are generally contoured at their edges to fit into the V of a pulley and are disposed between the chains. The load is carried by the chains and its pins. The load blocks are longitudinally positioned with respect to the chains by the chains' pins.

Abstract: A constant angular velocity joint for the transmission of rotational movements between two shafts includes a pair of driving members, each coupled to a shaft, one driving member having a plurality of generally equally spaced pivot means connected obliquely thereto so as to overlie the driving member, the other driving member being generally cylindrical and having a converging portion extending therefrom with a plurality of open ended, generally radial spaced slots therein, the spacing of which corresponds to the spacing of the pivot means. Each pivot means is received in one of said slots for relative movement with respect thereto depending on the angular position of said driving means.