Device for coupling a pair of rods

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

1978-03-06

1981-03-24

Shedd, Wayne L.

Joints and connections

With fluid pressure responsive component

403335, F16D 380, F16L 1700

Patent

active

042577144

ABSTRACT:
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. A pressurized gas is contained within the chamber to limit the force transmitted from the rod to the stem when the relative position of the rod with respect to the stem causes the piston member to be located intermediate of the cylinder member.

REFERENCES:
patent: 4103849 (1978-08-01), Holt et al.

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