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:
Oct. 11, 1988
Filed:
Sep. 14, 1987
Takao Sawa, Yokohama, JP;
Masaki Sahashi, Fujisawa, JP;
Susumu Hashimoto, Tokyo, JP;
Akira Ishii, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A pressure sensing device of this invention has a first diaphragm for defining a first pressure transmission chamber within a housing assembly with a pressure transmission fluid sealed therein and a second diaphragm for defining a second pressure transmission chamber within the housing assembly with a pressure transmission fluid sealed therein. The pressures of first and second measuring fluids both act upon the side opposite to that on which the corresponding diaphragm faces the corresponding pressure transmission chamber. The first and second diaphragms are both formed of a metal sheet having the modulus of 2,000 to 15,000 Kg/mm.sup.2. A pressure-sensing element is disposed between the pressure transmission chambers to sense a differential pressure level between the pressure transmission chambers.