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:
Oct. 13, 2015
Filed:
Apr. 03, 2012
Kazuyuki Sugimura, Hitachinaka, JP;
Hideo Nishida, Kasumigaura, JP;
Hiromi Kobayashi, Kasumigaura, JP;
Toshio Ito, Ushiku, JP;
Kazuyuki Sugimura, Hitachinaka, JP;
Hideo Nishida, Kasumigaura, JP;
Hiromi Kobayashi, Kasumigaura, JP;
Toshio Ito, Ushiku, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
An impeller includes a hub plate and a plurality of blades circumferentially disposed at intervals on one surface side of the hub plate. Each blade has a shape formed by piling up a plurality of blade sections in a blade height-wise direction of each blade in a reference impeller in which the hub plate intersects with the blades and which includes a linear element blade in the blade height-wise direction so as to form a curvilinear element blade. In piling up the blade sections, amounts of tangential lean and sweep to be applied to the blade sections are increased as it goes from an end face of at least one of a hub plate side end and a counter hub plate side end toward a span intermediate part of the blade.