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:
Mar. 16, 1976
Filed:
Sep. 25, 1974
Joseph P Wagner, Knoxville, TN (US);
Robertshaw Controls Company, Richmond, VA (US);
Abstract
A pressure sensing means having a housing provided with a chamber therein. A double wall fluid operated device is disposed in the chamber of the housing and is carried by the same, the walls of the device defining a chamber therebetween that is interconnected to the exterior of the housing by a passage. A charge of pressure fluid is sealed in the chamber of the housing to initially hold the walls of the device in flat abutting relation in a manner to prevent an adverse permanent set thereof. Subsequently, the chamber of the double wall fluid operated device is interconnected to the pressurized chamber of a container means for a vehicular air bag safety system whereby the pressure sensing means can subsequently detect loss or gain of pressure differential across at least one of the walls of the double wall operated device for detection purposes or the like.