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:
Aug. 23, 2016
Filed:
Feb. 15, 2013
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Kazutoshi Yoko, Tokyo, JP;
Hiroko Kitamoto, Tokyo, JP;
Shimpei Okayasu, Tokyo, JP;
Hiroki Takagi, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
A heat treatment method of an impeller includes a heat treatment preparation process of arranging the impeller within a vacuum furnace, an impeller covering process of covering an outer peripheral surface of the impeller in a circumferential direction by a heat uniformizing jig made of a radiation conversion material which radiates transferred heat as radiant heat, and a heat treatment process including a heating process and a cooling process in which heat treatment is performed by heating or cooling the impeller covered with the heat uniformizing jig from the periphery using a heater.