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:
Jul. 18, 2006
Filed:
Jun. 03, 2004
Takashi Suzuki, Kashiwa, JP;
Tadayuki Tsutsui, Matsudo, JP;
Kei Ishii, Higashi Katsushika-gun, JP;
Yoshihiro Tanimura, Chiryu, JP;
Takashi Suzuki, Kashiwa, JP;
Tadayuki Tsutsui, Matsudo, JP;
Kei Ishii, Higashi Katsushika-gun, JP;
Yoshihiro Tanimura, Chiryu, JP;
Hitachi Powdered Metals Co., Ltd., Matsudo, JP;
Denso Corporation, Kariya, JP;
Abstract
A mechanical fuse has further improved and stabilized fatigue limit ratio, and can obtain high reliability under a using condition in which cyclic loading is applied. The mechanical fuse includes a Fe-based sintered alloy that has at least one element of P at 0.15 to 1.5 mass %, Si at 0.4 to 2.0 mass %, and Mn at 1.0 to 4.0 mass %, and the remainder consisting of Fe and inevitable impurities. An iron oxide layer is formed on a pore inner wall and the pores have roundness of 0.004 or more. A method of production therefore is also provided.