Method, apparatus and system for controlling fluid flow

Details Method, apparatus and system for controlling fluid flow Method, apparatus and system for controlling fluid flow

2007-10-30

2007-10-30

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Processes

Involving pressure control

C137S331000, C137S486000, C137S487500, C251S215000, C251S250000

Reexamination Certificate

active

10760015

ABSTRACT:
A system, apparatus and method of controlling the flow of a fluid are provided. In accordance with one embodiment of the present invention, a flow control device includes a valve having a flow path defined therethrough and a valve seat in communication with the flow path with a valve stem disposed in the valve seat. The valve stem and valve seat are cooperatively configured to cause mutual relative linear displacement thereof in response to rotation of the valve stem. A gear member is coupled with the rotary stem and a linear positioning member includes a portion which complementarily engages the gear member. Upon displacement of the linear positioning member along a first axis, the gear member and rotary valve stem are rotated about a second axis and the valve stem and valve seat are mutually linearly displaced to alter the flow of fluid through the valve.

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