| 摘要 |
<p>The invention is constituted by a pneumatic activating device able to transform a straight movement into a rotary movement, wherein the device is of a compact type and comprises in reciprocal cooperation and coordination: - a plurality of shafts or arms (22-23) located in the piston-disks (19) and stretching towards the other piston-disk (19), at least one shaft (22) per piston having equipment (29-31) fitted to it, - one single feed duct (15) for the two end chambers (18) - and feed inlets (13-14) located near to each other whereby at least one return spring (25-125) can be included.</p> |
