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:
Feb. 03, 2009
Filed:
Sep. 18, 2007
Larry Saul Zelson, Lansdale, PA (US);
Larry Saul Zelson, Lansdale, PA (US);
Other;
Abstract
A check valve adapted for mounting between any flanges and specifically between sanitary flanges in a piping system, the check valve comprising a stationary portion and a flexible portion; the single-piece rigid stationary portion including and supporting a valve seat; the single-piece molded elastomeric flexible portion including a flange gasket, a valve plug, flexible retaining arms for guiding and securing the valve plug movement with respect to the valve seat, and a visual means to indicate that the check valve is installed, permits flow in the desired direction, and is drainable; the check valve being fully cleanable and sterilizable in situ by flow-through methods and having at least one embodiment that is fully drainable when mounted in any orientation.