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. 03, 1981
Filed:
Apr. 16, 1979
Applicant:
Inventors:
Mark A Brooks, Sterling Heights, MI (US);
Robert E Fallis, Milford, MI (US);
Assignee:
The Bendix Corporation, Southfield, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F27D / ; C21D / ;
U.S. Cl.
CPC ...
432253 ; 432258 ;
Abstract
A pressure sensor including a pressure capsule such as a dual diaphragm quartz capacitance pressure capsule. The pressure capsule having two parallel quartz plates spaced by a dielectric ring forming a vacuum chamber therein. A registration fixture is described which contains a plurality of flat plates, each plate having a pressure capsule receiving cavity sized to closely receive one of the quartz plates and further provides a uniform temperature radiation pattern for sealing of the pressure capsule during the controlled pressure-temperature profile.