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.

Date of Patent:
Jul. 29, 1986

Filed:

Apr. 18, 1985
Applicant:
Inventors:

Hisatoshi Hirota, Hachioji, JP;

Masahide Ishikawa, Hachioji, JP;

Etsumi Nakano, Hachioji, JP;

Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ; H01L / ;
U.S. Cl.
CPC ...
73725 ; 338 / ; 338 42 ;
Abstract

A pressure converter which comprises a cylindrical main body consisting of an outer casing portion and an inner casing portion, said outer casing having a pressure inlet and being divided by a diaphragm into an air-tight chamber above the diaphragm and an operation chamber below the diaphragm, a piston supported by a pair of annular spring plates within the operation chamber for vertical movement and having an engaging member provided at one end, a stopper interposed between the spring plates, a magnetic resistance provided in a lower portion of the operation chamber to produce output voltage which varies depending upon the position of a permanent magnet positioned on a movable member in opposition to the magnetic resistance and a spring anchored to the inner casing portion and the movable member to normally bias the movable member to engage the piston.


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