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:
Mar. 03, 2009
Filed:
Apr. 21, 2004
Kouji Kawamura, Tokyo, JP;
Hiroyuki Akita, Tokyo, JP;
Masatoshi Murai, Tokyo, JP;
Hirotoshi Yonezawa, Tokyo, JP;
Satoru Naito, Tokyo, JP;
Kouji Kawamura, Tokyo, JP;
Hiroyuki Akita, Tokyo, JP;
Masatoshi Murai, Tokyo, JP;
Hirotoshi Yonezawa, Tokyo, JP;
Satoru Naito, Tokyo, JP;
Mitsubishi Electric Corporation, Chiyoda-Ku, Tokyo, JP;
Abstract
A thermal trip device in which a bimetal () is heated by overcurrent and performs trip operation of a circuit by curvature of the heated bimetal (), wherein at least one part of the surface of the bimetal () is made to be black or matte black (). Thereby, temperature of the bimetal () can be highly accurately measured using a no-contact thermometer. Furthermore, a temperature measurement part () of the bimetal is provided with a bending part (), and the surface of the bending part is made to be matte black.