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:
May. 29, 2012
Filed:
Jun. 06, 2008
Theodore Paul Geelhart, Marshalltown, IA (US);
Kimball Ralph Barron, Marshalltown, IA (US);
Theodore Paul Geelhart, Marshalltown, IA (US);
Kimball Ralph Barron, Marshalltown, IA (US);
Fisher Controls International, LLC, Marshalltown, IA (US);
Abstract
Valve trim retention apparatus for use with valves are described. An example valve trim retention apparatus includes a liner to retain a valve seat within a valve body. The liner includes an outer surface having first external threads to engage a first threaded opening of the valve body. A ring retainer engages the liner and has second external threads to engage a second threaded opening of the valve body. The first and second threaded openings cause the liner and the ring retainer to move in opposite directions when the liner and the ring retainer are rotated in same direction.