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:
Jan. 25, 1983
Filed:
Mar. 21, 1980
Applicant:
Inventors:
Tesshi Shigemori, Nishinomiya, JP;
Yoshinao Nozawa, Suita, JP;
Teruhisa Kojima, Kawasaki, JP;
Satoshi Kitajima, Hiratsuka, JP;
Assignee:
New Cosmos Electric Company Limited, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ; G01N / ;
U.S. Cl.
CPC ...
73 2 / ; 340634 ;
Abstract
A gas leakage detector comprising a solid state gas sensor having a sintered metallic oxide block which changes thermal conductivity by chemical adsorption thereto and a wire for transforming thermal conductivity charges into an electric signal. A suction pump draws gas through a gas intake path to the gas sensor. A voltage-frequency converter generates a pulse frequency that is a function of the gas sensor voltage. An alarm indicator including sound and/or light is controlled to pulse by the output pulse of the voltage frequency converter.