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:
Aug. 08, 2006
Filed:
Jul. 15, 2004
Junichi Koyano, Tokyo, JP;
Shuji Tajima, Tokyo, JP;
Junichi Koyano, Tokyo, JP;
Shuji Tajima, Tokyo, JP;
Riken Keiki Co., Ltd., Tokyo, JP;
Abstract
The invention provides an explosion-proof portable gas detector that is easy to be fabricated as a small-sized one handy to carry and high in convenience for use, and has explosion-proofness sufficient in a countermeasure against static electricity and high in reliability. The explosion-proof portable gas detector has at least gas sensors, a signal processing circuit, a display mechanism and a power source part within a housing in the form of a slim and flat box holdable by grasping with a hand. The whole or a part of the housing is formed of a static charge-controlling resin material having an insulating resistance value of at most 1 GΩ and a comparative tracking index of at least 90 V.