Abstract: To decrease the cost of such a connection, and increase power transmission as well as decrease stresses on the shaft, conical surfaces formed of respective inner and outer clamping rings are so arranged that one of the conical surfaces has an engagement friction relationship which provides for self-binding, whereas the other conical surface does not have self-binding engagement friction; the difference in engagement friction can be obtained by changing the cone angles, or the surface characteristics of the engaging surfaces.

Abstract: To couple a hub having a connecting boss to a shaft, with improved centricity and torque transmission, the hub is formed with a ring groove in the end face leaving a protruding boss surrounding the shaft, in which ring groove a pair of concentric rings having matching continuous conical surfaces are inserted, the depth of the ring groove, and the rings themselves being so relatively dimensioned that, in loosely assembled condition, the inner surface of the outer ring is spaced from the axially facing surface of the ring groove by a pretermined distance which is taken up during tightening, the inner face of the ring groove then forming a stop or abutment surface upon such axial tightening of the outer ring over the inner ring to completely fill the ring groove and provide for radial support of the hub in the region of the ring groove as well as for transfer of power from the shaft to the hub by engagement of the boss of the hub with the shaft, and of the rings with each other and with the hub, respectively.

Abstract: To simplify manufacture of double conical hub-to-shaft connections and to improve centricity, a double conical centering ring is located intermediate the connection, formed with a cylindrical groove, so dimensioned that it will entirely receive a radially resilient ring, which ring can snap into a matching ring groove formed on a double conical surface, to entirely fill the groove and accept compressive forces without deformation of the conical surfaces adjacent the groove.