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:
Sep. 20, 1977
Filed:
May. 17, 1976
William Paul Gruber, Altadena, CA (US);
Allied Chemical Corporation, Morris Township, NJ (US);
Abstract
A pressure switch for use within a pressure chamber containing a gas having a pressure of P.sub.2, said switch including a pressure vessel containing gas having a pressure of P.sub.1, said vessel circumscribed by an end wall at one end thereof, side walls and closed at the second end by a flexible diaphragm, said diaphragm biased in a first position and subjected to P.sub.2 on one surface thereof and to P.sub.1 on the other surface thereof, said diaphragm assuming said first position when P.sub.2 does not exceed P.sub.1 by a predetermined amount and assuming a second position under P.sub.2 when P.sub.2 does exceed P.sub.1 by said amount, and switch means operatively associated with movement of said diaphragm.