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. 16, 1983
Filed:
Jun. 22, 1981
Leonardo Cadeddu, Crema, IT;
Benditalia S.p.A., Crema, IT;
Abstract
A safety valve for isolating a portion of a service conduit from a vacuum generator should a leak occur in that portion of the service circuit. The safety valve has a housing with a chamber therein. The chamber has an inlet port connected to the service circuit and an outlet port connected to the vacuum generator. A wall member located in the chamber is biased by a spring toward a first position whereby the vacuum generator is connected to the service circuit. Should a leak occur in the service circuit, air flow through the chamber acts on the wall to overcome the resistance of the spring and moves the wall to a second position to seal the chamber and thereby interrupts air flow through the chamber to the vacuum generator.