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:
Mar. 03, 2020
Filed:
Dec. 11, 2013
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Noriyuki Hayashi, Tokyo, JP;
Makoto Ozaki, Tokyo, JP;
Nariaki Seike, Tokyo, JP;
Hiroshi Kanki, Tokyo, JP;
Hiroshi Suzuki, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
A rotational bodyincludes a rotational shaft, an impeller, and a nut. The impeller includes a hub portionhaving a peripheral surfaceinclined to the axial direction of the rotational shaft and having an insert holein which the rotational shaft is inserted, and a blade portion. At least one of the rotational shaft or the insert hole of the hub portion has an interference fit portionfor fit between the rotational shaft and the impeller, where the outside diameter of the rotational shaft is larger than the inside diameter of the insert hole of the hub portion. The interference fit portion is formed in a region which does not include the largest outside diameter portionB where the hub portion has a largest outside diameter, with the rotational shaft and the impeller mating with each other.