Pressure fluid actuator with damping and speed control device

Details Pressure fluid actuator with damping and speed control device Pressure fluid actuator with damping and speed control device

F - Mech Eng,Light,Heat,Weapons

15

B

F15B 15/14 (2006.01) F15B 15/22 (2006.01)

Patent

CA 2314958

The pressure fluid actuator comprises a tubular body and closing heads to define a piston chamber in which a piston may reciprocate. The piston, at both ends, is provided with a damping bush which may protrude into a flow damping chamber in each closing head connected to a fluid inlet/outlet port; a conduit comprising a flow throttling valve is branched between each side of the piston chamber and the damping chamber in each closing head. The flow damping bush comprises a longitudinally extending fluid supply duct provided with a pressure actuated unidirectional flow control valve which prevent the pressure fluid to flow from the piston chamber into the damping chamber during damping at the end of a piston stroke, while allowing flow circulation into the piston chamber when the bush is within the damping chamber at the beginning of a piston stroke.

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