George C Watson

US Patent:

20030192597, Oct 16, 2003

Filed:

Apr 10, 2002

Appl. No.:

10/121106

Inventors:

John Trantham - Hurst TX, US
George Watson - Dallas TX, US

Assignee:

Flow Design, Inc.

International Classification:

G05D007/01

US Classification:

137/501000

Abstract:

According to one aspect of the invention, a fluid regulating control valve includes a housing having an upstream region and a downstream region and having a control orifice formed therein adjacent the downstream region and a piston slidably disposed within the housing. The piston has a fluid passage defining an intermediate region disposed between the upstream region and the downstream region and an edge adjacent the downstream region. The valve also includes an elastic member disposed within the housing for opposing translation of the piston within the housing and a throttling element adjacent the upstream region. The throttling element has a throttling surface adjacent the edge of the piston, in which the throttling surface and the edge define a throttling orifice therebetween. The valve further includes an equalization aperture formed in the housing to allow a fluid in the downstream region to enter an equalization chamber defined by a region between an inside surface of the housing and an outside surface of the piston.

US Patent:

62763970, Aug 21, 2001

Filed:

Jul 6, 2000

Appl. No.:

9/611359

Inventors:

Robert T. Weber - Dallas TX
George T. Watson - Dallas TX
John M. Trantham - Hurst TX

Assignee:

Flow Design, Inc. - Dallas TX

International Classification:

F15D 102

US Classification:

138 37

Abstract:

An apparatus for shaping fluid flow comprises a body having upstream and downstream ends and formed with a characterizing channel. The characterizing channel has a first cross-section adjacent the upstream end that gradually changes to a second cross-section adjacent the downstream end that is different in configuration from the first cross-section.