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:
Jun. 05, 2002
Applicant:
Inventors:
James A. Stares, Norton, MA (US);
Christopher Bittner, East Freetown, MA (US);
Assignee:
Dresser, Inc., Addison, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 1/107 ;
U.S. Cl.
CPC ...
F16K 1/107 ;
Abstract
A guided control valve comprising a vapor recovery area that encourages collapse of vapor bubbles. In a cage-guided valve, a seal comprising inner and outer members reduces flow through a radial clearance between a plug and a cage. The vapor recovery area is positioned below the seal and above a seat interacting with the plug. The vapor recovery area encourages collapse of vapor bubbles to reduce damage to the valve trim.