| 摘要 |
1477612 Fluid-pressure actuators NELES OY 30 Jan 1975 [11 Feb 1974] 4040/75 Heading F1D A double-acting actuator, Fig. 1, comprises a hollow piston 3 with seals 6 at each end, a torqueshaft 5, which passes through the walls of a cylinder 1, 2, and a link 4, which is housed within the piston and connects it to the torque-shaft through a crank 12. As described, the cylinder is in two parts, 1, 2. The seals 6 isolate the interior of the piston from the working fluid. Adjustable endstops 16 are provided. The piston may be connected to the torque-shaft by a rack and pinion. The actuator may be used to operate a valve. |
