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:
Mar. 16, 2021
Filed:
Jan. 11, 2017
Topy Kogyo Kabushiki Kaisha, Tokyo, JP;
Kenji Yoshii, Toyohashi, JP;
Hiroyasu Kato, Toyohashi, JP;
Tatsuro Kakami, Toyohashi, JP;
Keitaro Enami, Toyohashi, JP;
Yuji Iwakura, Toyohashi, JP;
TOPY KOGYO KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A spinning apparatus for decreasing by spinning a thickness of a portion of a tube material having a uniform thickness except at a first axial end portion is disclosed. The spinning apparatus includes a spindle-side chuck having a conical concavity and a mandrel. The mandrel has a mandrel-side chuck formed in a form of a conical convexity corresponding in configuration to the conical concavity of the spindle-side chuck and a cylindrical portion for supporting the tube material. The spinning apparatus further includes a spinning roll for decreasing the thickness of the tube material by pressing the spinning roll against the tube material when the tube material is supported by the cylindrical portion of the mandrel.