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:
Aug. 03, 2021
Filed:
Mar. 29, 2019
Applicant:
Dresser, Llc, Houston, TX (US);
Inventor:
Thomas Henry Cunningham, North Easton, MA (US);
Assignee:
Dresser, LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 27/02 (2006.01); F16K 39/02 (2006.01); F16K 3/24 (2006.01); F16K 1/12 (2006.01); F16K 1/42 (2006.01);
U.S. Cl.
CPC ...
F16K 27/02 (2013.01); F16K 1/12 (2013.01); F16K 1/42 (2013.01); F16K 3/24 (2013.01); F16K 39/022 (2013.01); Y10T 137/1624 (2015.04);
Abstract
A gap control device that works with a plug on a valve assembly for use in high-temperature applications. The plug may include two parts and a compressible seal that, when compressed, engages with an adjacent wall of a cylinder or 'cage' typical of a trim assembly. In one embodiment, the gap control device forms a hard stop that expands in response to high temperatures. This feature prevents excess over-travel between the two parts of the plug in the high-temperature applications so as to limit stress and wear on the compressible seal.