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:
Aug. 13, 1991
Filed:
Jun. 15, 1990
Applicant:
Inventors:
David E Gayton, Bay Village, OH (US);
Michael A Brattoli, Elyria, OH (US);
Assignee:
Moen Incorporated, Elyria, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137218 ; 137512 ; 1375124 ;
Abstract
A back flow preventer and vacuum breaker for use with a plumbing fixture in which the discharge may be moved to a position within a body of water includes a body having an inlet and an outlet, a chamber connecting the inlet and outlet and an air vent opening into the chamber. There is a first diaphragm positioned within the chamber which controls air flow through the vent. There is a second diaphragm positioned in the chamber which controls flow from the inlet into the chamber and includes an integral check valve extending into the outlet.