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.

Date of Patent:
Nov. 14, 2023

Filed:

Mar. 07, 2023
Applicant:

Mitsubishi Heavy Industries, Ltd., Tokyo, JP;

Inventor:

Norifumi Hirata, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 5/30 (2006.01); F01D 5/00 (2006.01); F01D 5/12 (2006.01);
U.S. Cl.
CPC ...
F01D 5/3007 (2013.01); F01D 5/005 (2013.01); F01D 5/12 (2013.01); F05D 2220/32 (2013.01); F05D 2230/80 (2013.01);
Abstract

One of spacing between the base-side first tooth and the base-side second tooth or spacing between the base-side second tooth and the base-side third tooth is greater than spacing between the tip-side first tooth and the tip-side second tooth. When, in a cross-section perpendicular to an extension direction of a plurality of teeth, a straight line that connects tooth bottom portions formed between each adjacent teeth in the blade height direction is a first line, an intersection between the first line and a second line that includes a linear portion of a tip-side tooth surface of each of the plurality of teeth is a first intersection, and an intersection between the first line and a third line that includes a linear portion of a base-side tooth surface of each of the plurality of teeth is a second intersection, a distance between the first intersection and the second intersection in the base-side first tooth is greater than a distance between the first intersection and the second intersection in each tooth other than the base-side first tooth.


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