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:
Sep. 08, 2015
Filed:
Mar. 03, 2011
Applicants:
Frank A. Stauder, London, CA;
Xan Vy Du, London, CA;
Robert Kropiniewicz, London, CA;
Inventors:
Assignee:
Masco Canada Limited, London, Ontario, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 21/06 (2006.01); E03D 3/04 (2006.01); F16K 27/02 (2006.01);
U.S. Cl.
CPC ...
F16K 21/06 (2013.01); E03D 3/04 (2013.01); F16K 27/02 (2013.01);
Abstract
A flush valve has a valve body having an inlet and an outlet, and a piston disposed in the valve body between the inlet and said outlet to regulate flow through the valve body. The piston has a shoulder. A neck depends from the shoulder and has a smaller perimeter than the shoulder. And, a flange depends from the neck and has a larger perimeter than the neck. Better flow characteristics of fluid about the shoulder, neck, and flange minimize noise coming from the valve and increase reliability thereof.