| 摘要 |
<p>A torque wrench of the type that "break" upon achieving a pre-selected maximum. The mechanism used to limit torque is adapted such that excessive wear is avoided and torque preselection remains within acceptable tolerances. This is achieved by providing a roller cam-follower to contact the surface of a cam-like surface mitigating any wear of the surface and/or the cam follower. The wrench is also adapted so that the break in applied torque, which characterises such wrenches, is readily apparent to the user of the wrench by an appreciable change in the alignment between the wrench body and the component engaging section. <IMAGE></p> |
