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:
Nov. 12, 2013
Filed:
Oct. 06, 2009
Method of manufacturing by electric discharge machining an impeller for centrifugal rotating machine
Hisanori Kishimoto, Hiroshima, JP;
Toyoaki Yasui, Hiroshima, JP;
Akinori Tasaki, Hiroshima, JP;
Eizaburo Tanaka, Yokohama, JP;
Takashi Maehara, Atsugi, JP;
Hisanori Kishimoto, Hiroshima, JP;
Toyoaki Yasui, Hiroshima, JP;
Akinori Tasaki, Hiroshima, JP;
Eizaburo Tanaka, Yokohama, JP;
Takashi Maehara, Atsugi, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Hoden Seimitsu Kako Kenkyusho Co., Ltd., Kanagawa, JP;
Abstract
A method for manufacturing an impeller of a centrifugal rotating machine that is approximately disk-shaped and in which flow passages are formed between a plurality of blades and disposed in a radial manner from the inner circumferential side to the outer circumferential side, provided with a first flow passage formation step that forms a first region on the outer circumferential side within the flow passage by inserting an electrode of a shape fitting to the flow passage with the electric discharge machining method from the outer circumferential side of the disk-shaped body having an outer shape of an impeller, and a second flow passage formation step that forms a second region on the inner circumferential side within the flow passage from the inner circumferential side of the disk-shaped body.