Device for coupling a pair of rods

Details Device for coupling a pair of rods Device for coupling a pair of rods

F - Mech Eng,Light,Heat,Weapons

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F16D 1/12 (2006.01) F16K 1/48 (2006.01) F16K 31/44 (2006.01) F16K 31/50 (2006.01)

Patent

CA 1090153

DEVICE FOR COUPLING A PAIR OF RODS Abstract of the Disclosure A coupling is mounted between a valve stem of a valve and a rod of a valve actuator. The rod includes an extension having a piston member at the end thereof which is received within a cylinder member mounted on the end of the valve stem. The extension and piston member thereof define with the cylinder member a chamber within the cylinder member. Force can be transmitted from the rod to the stem by full insertion of the piston member within the cylinder member. Hydraulic fluid under pressure from an accumulator secured to the cylinder member is in communication with the chamber to limit the force transmitted from the rod to the stem when the re- lative position of the rod with respect to the stem causes the piston member to be located intermediate of the cylinder mem- ber.

320479

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