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:
Jul. 03, 2012
Filed:
Aug. 25, 2009
Karl-aage Lindholm Jensen, Odense, DK;
Per Schneidereit, Vamdrup, DK;
James Louis Larsen, Kenosha, WI (US);
Christian Karl Thommen, Iii, Salem, WI (US);
Roger James Ashton, Kenosha, WI (US);
Karl-Aage Lindholm Jensen, Odense, DK;
Per Schneidereit, Vamdrup, DK;
James Louis Larsen, Kenosha, WI (US);
Christian Karl Thommen, III, Salem, WI (US);
Roger James Ashton, Kenosha, WI (US);
Alfa Laval Kolding A/S, Kolding, DK;
Alfa Laval Corporate AB, Lund, SE;
Abstract
A cleaning system for cleaning a valve seat, where the valve seat is formed of at least one gasket for sealing between a housing and a stem, preferably for a double seat valve and where at least one guide band is centering the stem in the housing, where the stem has a cut out, allowing a cleaning liquid to flush the seat, when the stem is in a cleaning position, and where the guide band is still centering the stem while in the cleaning position. By putting the stem into a cleaning position, the cut out in the stem is positioned in the area of the gasket and thereby allowing the cleaning liquid to pass the gasket and the guide band via a small gap between the guide band and the stem itself. This way the seat is flushed with cleaning liquid and is thereby cleaned.