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. 10, 2004
Filed:
Mar. 04, 2003
Applicant:
Inventor:
Yoshiaki Tanaka, Osaka, JP;
Assignee:
Uchihashi Estec Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01H 8/506 ; H01H 8/5055 ;
U.S. Cl.
CPC ...
H01H 8/506 ; H01H 8/5055 ;
Abstract
The invention provides a thermal fuse and a fuse element of the low-melting fusible alloy type in which the fuse element has an alloy composition of 48 to 60% In, 10 to 25% Sn, and the balance Bi, and a total of 0.01 to 7 weight parts of at least one selected from the group consisting of Au, Ag, Cu, Ni, and Pd is added to 100 weight parts of the composition. As a result, the operating temperature is in the range of 57 to 67° C., requests for environment conservation can be satisfied, the diameter of the fuse element can be made very thin or reduced to about 300 &mgr;m&phgr;, self-heating can be suppressed, and the thermal stability can be satisfactorily guaranteed.