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. 25, 2018
Filed:
Jul. 30, 2013
Applicant:
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Inventor:
Yoshiaki Hirota, Tokyo, JP;
Assignee:
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 13/02 (2006.01);
U.S. Cl.
CPC ...
B23K 13/025 (2013.01);
Abstract
An apparatus for manufacturing electric resistance welded pipe, in which two across-opening-facing end parts () of an open pipe () including an opening () extending in a running direction are melted by an induction current generated by an induction heating means and joined together at a join portion. The induction heating means includes a first induction coil (), and the first induction coil () is disposed above the opening () so as not to encircle the outer circumference of the open pipe () and so that a primary current circuit is formed straddling the opening ().