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:
Jun. 04, 2019
Filed:
Aug. 28, 2014
Applicant:
Mitsubishi Heavy Industries Compressor Corporation, Tokyo, JP;
Inventors:
Ryosuke Saito, Tokyo, JP;
Shinji Iwamoto, Hiroshima, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 29/30 (2006.01); F04D 17/12 (2006.01); F04D 29/28 (2006.01); F04D 29/42 (2006.01);
U.S. Cl.
CPC ...
F04D 29/30 (2013.01); F04D 17/122 (2013.01); F04D 29/284 (2013.01); F04D 29/286 (2013.01); F04D 29/4206 (2013.01); F05D 2250/713 (2013.01);
Abstract
An impeller with a disc that rotates about an axis, and blades a plurality of which are disposed in the circumferential direction of the disc with intervals therebetween. A defined blade angle of the blade has a prescribed gradual increase region and gradual decrease region from the center towards the outside, and at the center of an inflection region of the gradual increase region and of the gradual decrease region, provided is a partial gradual decrease region having a smaller blade angle decrease amount than the blade angle increase amount of the gradual increase region.