Linear fluid power actuator assembly

Details Linear fluid power actuator assembly Linear fluid power actuator assembly

F - Mech Eng,Light,Heat,Weapons

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F01L 25/04 (2006.01) F01L 9/02 (2006.01) F15B 13/00 (2006.01) F15B 15/20 (2006.01)

Patent

CA 2122149

2122149 9308381 PCTABS00021 A fluid power actuator comprising a piston (42) mounted in a cylinder bore (44) formed in a compact manifold (22) providing necessary circuit connections between control valves (24) and the bore. The bore includes at least two circumferentially spaced signal ports (68, 70; 72, 70') disposed in the wall of the cylinder bore along the path of travel of the piston. The piston includes at least one circumferential groove (66, 67) which opens and closes communication between the signal ports as the piston travels in the bore. Appropriate control valves and signal pressure communicating with the signal ports enable a fluid power signal to be generated which is used to activate appropriate control logic circuitry to reverse or modify the piston's operation. Included in the control logic circuitry is a toggle type control valve (102), which is activated by the fluid power signal, to reverse the direction of movement of the piston.

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