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. 17, 2019
Filed:
Sep. 08, 2014
Applicants:
Ntn Corporation, Osaka, JP;
Eri Hirayama, Shizuoka, JP;
Tsuneaki Hiraoka, Shizuoka, JP;
Shintaro Suzuki, Shizuoka, JP;
Inventors:
Assignee:
NTN CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 9/40 (2006.01); C21D 1/10 (2006.01); C21D 1/42 (2006.01); C21D 1/58 (2006.01);
U.S. Cl.
CPC ...
C21D 9/40 (2013.01); C21D 1/10 (2013.01); C21D 1/42 (2013.01); C21D 1/58 (2013.01);
Abstract
When a plurality of outer rings (R) are sequentially and inductively heated to a target temperature by energizing a heating coil () elongated more than each of the plurality of outer rings (R), which are made of steel and retained coaxially by a retaining unit (), while relatively moving the outer rings (R) and the heating coil () in an axial direction, an output of the heating coil () is varied in consideration of the number of outer rings (R) present in an opposing region of the heating coil ().