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. 26, 1980
Filed:
Sep. 26, 1977
John P Kayser, Madison, WI (US);
Airco, Inc., Montvale, NJ (US);
Abstract
A double valve construction for gas or vacuum outlets which are operable by the insertion of an adapter to deliver gas or vacuum to an intended use including a secondary housing which is connected to the gas or vacuum and has a secondary valve. A primary housing is adapted to interfit with the secondary housing such that the secondary valve is opened but allowing the two housings to be adjustable for varying plaster thicknesses of the wall in which the outlet is mounted. The primary housing has a dust cap closing its delivery end. A primary valve is formed by the interrelationship of the primary housing into the secondary housing and normally prevents the gas or vacuum from reacting the primary housing. As an adapter is inserted into the primary housing, the dust cap is displaced a predetermined distance until it opens the primary valve allowing the gas or vacuum to enter the adapter.