Kenneth Alden Thurston
Engineers in Woodland Hills, UT

6615874, Sep 9, 2003

Jan 22, 2002

10/054717

Kenneth A. Thurston - Salem UT
Alan H. Glenn - Salem UT

Flowserve Management Company - Irving TX

F15D 100

138 42, 138 40, 251127, 1376253

The present invention provides a cost effective means by which pressure reduction in a fluid flow control device is optimized. The pressure reduction achieved according to the present invention also minimizes valve wear and presents new solutions in reducing, attenuating, eliminating, damping, redirecting, or otherwise defeating valve noise. In accordance with one embodiment of the present invention, a flow control device is provided including a valve trim assembly comprising a plurality of valve trim disks defining a plurality of flow paths along a fluid passage between a fluid inlet and a fluid outlet of the flow control device. Respective flow paths defined by the valve trim disks comprise an expansion/contraction mechanism, a velocity control mechanism, an acoustic chamber, and frequency shifting passages. The expansion/contraction mechanism has a cross section including rapid increases and decreases in cross-sectional flow area. The velocity control mechanism defines a cross-sectional flow profile defining a relatively low cross-sectional flow area proximate the fluid inlet and a relatively high cross-sectional flow area proximate the fluid outlet.

6718633, Apr 13, 2004

Mar 14, 2003

10/389225

Alan Holton Glenn - Salem UT
Kenneth Alden Thurston - Salem UT

Flowserve Management Company - Irving TX

B23P 1500

29890124, 2989012, 29890132, 138 42, 1376253

A process for manufacturing a valve trim assembly. The process comprises providing a flow disk having an outer diameter, an inner diameter, and an outer disposable flow disk portion, providing a separation disk having an outer diameter and an inner diameter, wherein the flow disk outer diameter is greater than the separation disk outer diameter, stacking the flow disk on the separation disk, and removing the outer disposable flow disk portion creating a reduced flow disk outer diameter. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 C. F. R. §1. 72(b).