| http://www.w3.org/ns/prov#value | - In the prior art, there have been Various forms of shaft couplings; but those forms designed to transmit torque have generally been provided with some sort of auxiliary fastening part, such as a key, feather, spline, set-screw or taper pin for transmitting without slipping torsional, and in some instances axial forces, from the shaft to a hub mounted thereon, and vice versa.
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