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:
Jul. 19, 2016
Filed:
Jun. 27, 2013
Dresser Inc., Addison, TX (US);
Thomas Henry Cunningham, North Easton, MA (US);
Dresser, Inc., Addison, TX (US);
Abstract
Embodiments of a seal element for use in a trim assembly that allow valves and, in particular, balance control valves to meet high-temperature and shut-off requirements. These embodiments can engage and disengage a cage element and a plug element of the trim assembly, thereby creating a seal that prevents leaks of working fluid that can compromise operation of the valve. In one embodiment, the seal element comprises an annular ring that circumscribes the outer periphery of the plug element. The annular ring can deflect in response movement of one part of the plug element relative to another part of the plug element. This deflection can cause the seal element to contact the cage element and the plug element in seal regions that are proximate to one another, and to the outer periphery of the plug element.