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:
Apr. 21, 2015
Filed:
Mar. 18, 2011
Jonathan Wesley Richardson, Marshalltown, IA (US);
Justin Paul Goodwin, Nevada, IA (US);
Jesse Creighton Doyle, Ames, IA (US);
Jonathan Wesley Richardson, Marshalltown, IA (US);
Justin Paul Goodwin, Nevada, IA (US);
Jesse Creighton Doyle, Ames, IA (US);
Fisher Controls International, LLC, Marshalltown, IA (US);
Abstract
Thermally compensated valve trim apparatus are disclosed. An example valve trim apparatus includes a valve plug having a recess, an insert fixed in the recess and having an opening therein. The insert is made of a material having a greater strength than a second material of the valve plug. The example valve trim apparatus also includes a valve stem having a threaded end disposed in the opening of the insert to form a valve stem connection, and a spacer operatively coupled to the valve plug and vale stem to affect a load exerted on the valve stem connection in response to a change in temperature.