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.

Date of Patent:
Jul. 16, 2013

Filed:

Jan. 13, 2010
Applicants:

Katsuyuki Nakajima, Utsunomiya, JP;

Daisuke Koshino, Utsunomiya, JP;

Akihiro Nemoto, Tochigi-ken, JP;

Inventors:

Katsuyuki Nakajima, Utsunomiya, JP;

Daisuke Koshino, Utsunomiya, JP;

Akihiro Nemoto, Tochigi-ken, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 26/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A rotatable workpiece holder for holding a hollow cylindrical workpiece thereon functions as a chiller for cooling the hollow cylindrical workpiece. A coolant, e.g., water, is supplied to the hollow cylindrical workpiece through second coolant passages and branch passageways defined in the workpiece holder, thereby cooling the hollow cylindrical workpiece. The coolant forms a film in a clearance between the outer surface of an annular side wall of the workpiece holder and the inner circumferential surface of the hollow cylindrical workpiece.


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