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:
Jan. 29, 2013
Filed:
Apr. 18, 2011
Steven W. Cashen, Osceola, IN (US);
Randolph J. Christman, South Bend, IN (US);
Patrick D. Delahanty, Elkhart, IN (US);
Maynard R. Searing, Sr., LaPorte, IN (US);
G. Scott Searing, Kingsbury, IN (US);
Fred Krolzick, South Bend, IN (US);
Steven W. Cashen, Osceola, IN (US);
Randolph J. Christman, South Bend, IN (US);
Patrick D. Delahanty, Elkhart, IN (US);
Maynard R. Searing, Sr., LaPorte, IN (US);
G. Scott Searing, Kingsbury, IN (US);
Fred Krolzick, South Bend, IN (US);
JB Products, Inc., South Bend, IN (US);
Abstract
The air admittance vent ('AAV') includes a cup shaped vent body and a vertically reciprocating valve element that seats against a valve seat that has two separate contact areas defined by an annular ridge and a conical face formed in the bottom of the vent body. When the valve element moves into its closed position, the pliable diaphragm of the valve element initially contacts the annular ridge, which forms a first part of the valve seat before moving fully into sealing contact with the conical face, which forms the second part of the valve seat. The contact with the annular ridge provides a first initial seal before the diaphragm nests into contact with the conical face to form a second seal with the valve seat.