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. 16, 2012
Filed:
Apr. 27, 2007
Wade Jonathon Helfer, Ames, IA (US);
David John Koester, Gladbrook, IA (US);
Benjamin Uriah Good, Marshalltown, IA (US);
Paul Russell Dalluge, Marshalltown, IA (US);
Andrew John Olson, Brookings, SD (US);
Wade Jonathon Helfer, Ames, IA (US);
David John Koester, Gladbrook, IA (US);
Benjamin Uriah Good, Marshalltown, IA (US);
Paul Russell Dalluge, Marshalltown, IA (US);
Andrew John Olson, Brookings, SD (US);
Fisher Controls International LLC, St. Louis, MO (US);
Abstract
Flexible seals for process control valves are disclosed. An example disclosed seal includes a seal for use with a butterfly valve. The example seal includes a substantially flexible ring-shaped carrier configured to be fixed within the butterfly valve and to surround a flow control aperture therein. Additionally, the seal includes a ring-shaped cartridge coupled to an inner diameter of the ring-shaped carrier. The cartridge includes a first portion and a second portion coupled to the first portion to define a circumferential opening to hold a seal ring.