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. 20, 1982
Filed:
Jan. 31, 1980
Applicant:
Inventors:
Minoru Takahashi, Ibaraki, JP;
Hitoshi Minorikawa, Ibaraki, JP;
Masaru Iguchi, Ibaraki, JP;
Seiichi Kashiwazaki, Ibaraki, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
73726 ; 73115 ; 73720 ; 73756 ;
Abstract
A pressure transducer for automobiles comprises a closed housing, a member for detecting the pressure in the suction pipe of an engine and converting the pressure detected into electric signals, an amplification circuit disposed in the closed housing, and an air passage. The air passage communicates with the atmosphere, but prevents water from penetrating therethrough into the closed housing. The air passage comprises an air hole formed in a member defining the closed housing about terminals provided for leading the electric signals out of the closed housing.