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. 15, 2019
Filed:
Mar. 25, 2016
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Hiroki Kobayashi, Chiyoda-ku, JP;
Kosuke Umemura, Chiyoda-ku, JP;
Sohei Samejima, Chiyoda-ku, JP;
Kenichi Sakoda, Chiyoda-ku, JP;
Haruhiko Kakutani, Chiyoda-ku, JP;
Ichiya Takahashi, Chiyoda-ku, JP;
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-ku, JP;
Abstract
The impeller includes a blade formed either entirely or partially from fiber reinforced plastic, a boss member that supports the blade, a plate that presses a root portion of the blade against the boss member; and a fastening portion that fastens the boss member to the plate, wherein the root portion of the blade has an undercut shape, the boss member has an excavated portion, the excavated portion is shaped identically to all or a part of the undercut shape or shaped such that a gap is formed between the excavated shape and all or a part of the undercut shape, and the root portion of the blade is fastened by a fastening force via the boss portion and the plate in a condition where a clearance is provided between the boss member and the plate.