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:
Dec. 27, 1977
Filed:
Jan. 19, 1976
John Trenary, Fort Collins, CO (US);
Teledyne Industries, Inc., Fort Collins, CO (US);
Abstract
A vacuum breaker, capable of preventing undesired reverse flow of water, includes a hermetically-sealable housing provided with inlet and outlet couplings at its respectively opposite ends. The housing defines a chamber within which is a first valve seat near the inlet coupling and a first valving member disposed in the path of flow between the couplings and cooperative with the first valve seat to block flow from outlet toward inlet. A second valve seat is disposed adjacent to the outlet opening and provides communication between the chamber and the housing exterior. A second valving member is in a position exclusive of the flow path between the inlet and outlet couplings through the first valve seat and serves to selectively block communication between the chamber and the exterior.