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. 12, 2022
Filed:
May. 22, 2018
Mitsubishi Hitachi Power Systems, Ltd., Yokohama, JP;
Kentaro Tokuyama, Yokohama, JP;
Kenji Sato, Yokohama, JP;
Keisuke Matsuyama, Tokyo, JP;
Takaya Koda, Tokyo, JP;
Shunsuke Torii, Yokohama, JP;
Tetsuya Shimmyo, Yokohama, JP;
Shinya Hashimoto, Yokohama, JP;
Akihiro Murakami, Yokohama, JP;
MITSUBISHI POWER, LTD., Kanagawa, JP;
Abstract
A first-stage stator vane for a gas turbine includes: a first portion partially defining an airfoil which includes a pressure surface, a suction surface, and a trailing edge; and a second portion positioned at a leading-edge side of the airfoil with respect to the first portion, the second portion having a recess portion or a protruding portion. The recess portion or the protruding portion has a pair of side wall surfaces, and an angle formed between the pair of side wall surfaces is less than 90 angular degrees.