Abstract: A clip assembly includes a main block with a tapered internal wall confining a receiving space to receive slidably and engageably a pair of clamps therein. The clamps define a gap therebetween. The clamps further define an elongated engaging groove at its upper portion and extends transversely to the gap which receives engageably two connectors with two connecting rods extending out from the engaging groove to connect a circular disc disposed above the clamps. The disc has a centrally located threaded through-hole. A cover member has a through-hole aligned with the threaded through-hole of the disc and mounted securely on the rigid block to cover the receiving space. A regulating screw has a threaded portion engaged threadedly in the threaded through-hole of the circular disc and a head portion engaged rotatably by the periphery of the through-hole of the cover member so as to prevent the head portion from moving axially when the regulating screw is rotated about its axis.

Abstract: A hydraulic cylinder including a closed cylinder in which are mounted a rotor for rotation about the axis thereof and two pistons for linear movement, the pistons being respectively sleeved onto two ends of the rotor and bounding a first arcuate fluid tight chamber with the inner surface of the cylinder and the peripheral surface of the rotor. At least one vane member is provided on the rotor for operating with the fluid to produce a rotational output. At least one piston rod is connected to one end of the rotor and mounted to the closed end of the cylinder in fluid tight relationship. On both sides of the first fluid tight chamber are two second fluid tight chambers bounded respectively by two pistons associated with the inner surfaces of the cylinder and the closed ends.