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:
Jun. 03, 2008
Filed:
Feb. 24, 2006
Applicant:
Hans D. Baumann, Rye, NH (US);
Inventor:
Hans D. Baumann, Rye, NH (US);
Assignee:
Fisher Controls International LLC, St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 31/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
A balance-plug cage style control valve has substantially reduced body-bonnet bolt loading with an elastic seal. The elastic seal assembly includes an annular seal having an elastic region, a compression surface, and at least one sealing surface positioned in a channel within a valve cage mounted inside the valve body. At least one shoulder on the valve bonnet engages the elastic seal to deform the elastic region to place the sealing surface of the seal in contact with at least one of the valve bonnet or the valve cage to form a fluid seal.