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:
Oct. 18, 2005
Filed:
Dec. 14, 2000
Kenji Horii, Hitachi, JP;
Yasutsugu Yoshimura, Hitachi, JP;
Tadashi Nishino, Hitachi, JP;
Takashi Kamoshita, Hitachinaka, JP;
Takayoshi Tomino, Hitachi, JP;
Fuminori Ishikawa, Hitachiohta, JP;
Takao Funamoto, Hitachi, JP;
Takashi Mashiko, Hitachi, JP;
Kenjiro Narita, Hitachinaka, JP;
Jong-keun Kim, Pohang, KR;
Ki-chol Kim, Pohang, KR;
Jong-sub Lee, Pohang, KR;
Hwang-kyu Hwang, Pohang, KR;
Jung-sik Lee, Pohang, KR;
Jin-hee Kim, Pohang, KR;
Kenji Horii, Hitachi, JP;
Yasutsugu Yoshimura, Hitachi, JP;
Tadashi Nishino, Hitachi, JP;
Takashi Kamoshita, Hitachinaka, JP;
Takayoshi Tomino, Hitachi, JP;
Fuminori Ishikawa, Hitachiohta, JP;
Takao Funamoto, Hitachi, JP;
Takashi Mashiko, Hitachi, JP;
Kenjiro Narita, Hitachinaka, JP;
Jong-Keun Kim, Pohang, KR;
Ki-Chol Kim, Pohang, KR;
Jong-Sub Lee, Pohang, KR;
Hwang-Kyu Hwang, Pohang, KR;
Jung-Sik Lee, Pohang, KR;
Jin-Hee Kim, Pohang, KR;
Hitachi, Ltd., Tokyo, JP;
Pohang Iron and Steel Co., Ltd., Pohang-Si, KR;
Research Institution of Industrial Science and Technology, Pohang, KR;
Abstract
An upper shearing blade equipped with a protrusion of a triangle-columnar shape and a lower shearing blade equipped with a protrusion of the same shape are applied onto the overlapped portion of metal plates to be bonded, and then pressed into the metal plates in an oblique direction inclined with respect to the thickness direction by a stroke in such a range that the metal plates are not completely cut off. The operating loci of the upper, shearing blade and the lower shearing blade are overlapped each other so that one falls inside the other, and the sheared surfaces of the metal plates are formed into a bonded portion by plastic flow deformation. Therein, since a compressive force is applied onto the portions to be bonded, the portion being defined by the amount of overlap, and the portions are compressed to form a compressed portion after completion of bonding, the bonding strength enhances. Besides, since the protrusions on the shearing blades generate a pressing force pressing the sheared surfaces onto each other, by an effect of their inclined surfaces, a compression force applied onto the bonded portion further increases.