Valve actuation velocity control device

Details Valve actuation velocity control device Valve actuation velocity control device

2006-04-11

2006-04-11

Bastianelli, John (Department: 3751)

Valves and valve actuation

Fluid actuated or retarded

Dashpot or fluid controlled retarder or timer

C251S054000

Reexamination Certificate

active

07025327

ABSTRACT:
For use in a valve assembly including a housing having an axis and defining an interior, with fluid provided in the housing and substantially filling the housing interior, a valve stem disposed in the housing interior and a piston attached to the valve stem, wherein the piston and valve stem are moveable along the housing axis within the housing interior between first and second positions, a valve actuation control device is provided which is disposed in the housing interior, the valve actuation control device allowing the fluid to freely flow from one side of the piston to the other side during only a first portion of the piston's movement between the first and second positions.

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