| 摘要 |
A safety device in the form of a spring applied actuator includes a two-part housing (10, 11), in which a pressurized fluid is applied to a diaphragm 12 to compresses a set of springs (23, 24) within the housing, in order to maintain a friction surface (4) in a retracted condition and apart from a rotating surface (R). A diminution of fluid pressure enables the previously compressed spring set (23, 24) to expand and to push the previously retracted friction surface (4) into contact with the rotating surface (R) with sufficient force to stop the rotation thereof. <IMAGE> |
