The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 26, 2004
Filed:
Mar. 22, 2002
Henry W. Boger, Foxboro, MA (US);
Dresser, Inc., Addison, TX (US);
Abstract
A noise reduction device for use in a fluid flow system includes a central section and an outer section. The outer section is designed to reduce the velocity of an outer fluid flow relative to a central core fluid flow. The central section of the device may have a plurality of apertures, while the outer section may have upstream apertures communicating with a pressure reduction chamber and downstream apertures. The upstream apertures of the outer section may be smaller than, and off set from, the downstream apertures to increase the pressure reduction and further reduce the velocity of the fluid flow. A method is also described for reducing noise transmissions from a piping system wherein the fluid flow through the piping system is separated into an outer fluid flow and a core fluid flow, and the velocity of the outer fluid flow is reduced relative to the core fluid flow.