| 摘要 |
A coupling comprises an inner member 1 having an outer convex spherical periphery S1 centred about a central point C. The inner member has a torsional axis A1 extending through the central point. An outer ring 2 has an inner concave spherical complementary to the outer periphery of the inner member. The spherical surfaces of the inner and outer members co-act to transmit radial loads therebetween and to transmit loads acting along the torsional axis therebetween. An axle arrangement X1, X11 extends radially of the central point C and couples the inner member 1 and outer ring 2 for transmitting torsional load from one to the other. The inner member and outer ring are rotatable one relative to the other about the said central point in a direction constrained by the axle arrangement. The coupling may have additional members (3, 4 & 5, fig 7) and a coupling arrangement (66, 67, fig 6) may connect two couplings. |
