Abstract: A self-aligning rod end coupler including an outer housing having a first open end with an internally threaded portion and a second open end having a radially inwardly extending flange. A female adapter is provided having an externally threaded portion for engaging the internally threaded portion of the first open end of the outer housing and an internally threaded portion for engaging an external thread on a rod member. A slide washer is provided having a substantially flat surface disposed against the radially inwardly extending flange in the second open end of the outer housing and having a partial, substantially spherical surface.

Abstract: A flexible drive coupling comprised of a pair of identical coupling members and a flexible coupling insert disposed between the two coupling members for transmitting torque from the coupling member connected to the shaft of the prime mover to the coupling member connected to the shaft of the load. Each of the coupling members has a generally epitrochoidal-shaped insert disposed within a similarly shaped bore in the coupling member. The insert in turn has a shaft bore formed therein and a break in one wall thereof so that when torque is applied thereto, the insert readily conforms to the size of the shaft to thereby clamp the coupling member to the shaft.