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:
Apr. 26, 2022
Filed:
Nov. 22, 2019
Applicant:
Fujitsu General Limited, Kanagawa, JP;
Inventors:
Hirotaka Sawada, Kanagawa, JP;
Kazuya Funada, Kanagawa, JP;
Assignee:
FUJITSU GENERAL LIMITED, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/38 (2006.01); F04D 29/24 (2006.01); F04D 19/00 (2006.01); F04D 29/18 (2006.01); F04D 29/22 (2006.01); F04D 29/34 (2006.01); F04D 29/32 (2006.01);
U.S. Cl.
CPC ...
F04D 29/384 (2013.01); F04D 19/002 (2013.01); F04D 29/181 (2013.01); F04D 29/2216 (2013.01); F04D 29/242 (2013.01); F04D 29/34 (2013.01); F04D 29/38 (2013.01); F04D 29/388 (2013.01); F04D 29/329 (2013.01); F05D 2240/305 (2013.01);
Abstract
On the blade surface part, a first opening passing through the blade surface part from a negative pressure side toward a positive pressure side is provided between the first blade element and the second blade element. A chord length of the first blade element along a direction connecting the apex A with the point B, is equal to or larger than a chord length of the second blade element along a direction connecting an apex C with a point D.