A torque transmission mechanism includes a cam member which is rotatably supported and is provided with a cam for pressing a joint member in an axial direction of a rotation shaft and bush which is fitted to the cam member. The integral lock includes a locking bar integrally formed with a support arm that is located between a pressure pad end and a locking end portion, the support arm provides an effective pivot point whereby when force is applied to the pressure pad end, the locking end portion is urged up out of the first member notch releasing the engagement between the first member from the second member. The invention also relates to network systems using programs executing such methods and devices. The restriction section includes at least one temperature-effected member providing a temperature-dependent restriction effect. The method includes selectively storing a difference between a value associated with a previously processed version of a transaction and a value provided in a changed transaction. , cultures maintained at 39\xb0 C.