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:
Apr. 21, 1998
Filed:
Feb. 02, 1993
Fumito Uemura, Himeji, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A pressure sensor comprising a hollow main body (1) defining a bore (3) extending therethrough. A pressure sensing assembly (12) is disposed within the bore (3) to divide it into a detection cavity (3a) for transmitting therethrough the pressure to be detected at a pressure receiving end (3c) thereof and an output cavity (3b) through which an output signal from the pressure sensing assembly (12) is to be supplied. A flexible metal diaphragm (40) is attached to the main body (1) at the pressure receiving end (3c) to seal the detection cavity (3a) in which a pressure transmitting medium (11) is filled. The flexible metal diaphragm ( 40) has a resonance frequency above an oscillation frequency range of the pressure to be detected. Preferably, the effective diameter of the diaphragm (40) may be from 7.5 mm to 8.5 mm and the thickness dimension thereof may be from 35 .mu.m to 45 .mu.m.