Abstract: A pedal includes a shaft housing having a rotatable shaft coaxially within that is connectable to a crank. A vertical axis pivot base with a vertical axis insert housing extends orthogonally between opposite ends of the shaft housing. The vertical axis pivot base serves as a foundation for a pivot support frame. The pivot support frame can rotate on the vertical axis pivot base for toe-in and toe-out pivoting. The pivot support frame also facilitates longitudinal/heel-to-toe axis pivoting for inversion and eversion motion of pedal. A pedal frame is attached to the pivot support frame by inserting longitudinal axis shoulder screws through holes drilled on opposite sides of the pedal frame into longitudinal axis insert housings. Cushioning pads between the pivot support frame and the pedal frame are used to supplement muscular action in maintaining the desired angle of inversion or eversion.

Abstract: The self-locking threaded bearing is an externally threaded tubular member having a discontinuous thread to form thread sections which are spaced-apart axially on the bearing. In the bearing assembly, the thread sections engage portions of an internal thread in a bore of a housing for the bearing and, with the internal thread being more ductile than the thread sections of the bearing, portions of the internal thread are stripped to pack into the space between the thread sections and assist in locking the bearing into the housing.In the method of making the self-locking threaded bearing assembly, a tubular bearing is provided with a discontinuous external thread and a housing is formed with a bore having an internal thread of the same pitch as the external thread of the bearing and of material more ductile than that of the external thread.