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:
Dec. 11, 2007
Filed:
Jan. 09, 2003
Yutaka Miyamoto, Hamura, JP;
Takao Minagawa, Hamura, JP;
Shinichi Inagaki, Hamura, JP;
Kazu Uchida, Hamura, JP;
Kiyoyuki Fukui, Amagasaki, JP;
Yutaka Miyamoto, Hamura, JP;
Takao Minagawa, Hamura, JP;
Shinichi Inagaki, Hamura, JP;
Kazu Uchida, Hamura, JP;
Kiyoyuki Fukui, Amagasaki, JP;
Kikuchi Co., Ltd., Tokyo, JP;
Abstract
A butt welding apparatus, a butt welding method, and a product manufactured by the butt welding method involves two electrode rollers disposed on both the front and back sides of a thick sheet member and a thin sheet member whose end surfaces are butted. The electrode rollers bridge across the sheet members and are composed of small diameter portions on the side of the thick sheet member and large diameter portions on the side of the thin sheet member. The small diameter portions come into contact with and press the thick sheet member before the large diameter portions come into contact with the thin sheet member. Thus, the end surface of the thick sheet member swells and deforms toward the thin sheet member and reliably comes into contact with the end surface of the thin sheet member, and power is applied between the end surfaces, even if not polished.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile