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:
Sep. 30, 2008
Filed:
Sep. 02, 2002
Yutaka Yamashita, Hitachi, JP;
Kiyoshi Namura, Tokai, JP;
Eiji Saitou, Hitachi, JP;
Masakazu Takasumi, Hitachi, JP;
Masato Machida, Hitachi, JP;
Hideo Yoda, Hitachi, JP;
Kazuo Ikeuchi, Hitachi, JP;
Yutaka Yamashita, Hitachi, JP;
Kiyoshi Namura, Tokai, JP;
Eiji Saitou, Hitachi, JP;
Masakazu Takasumi, Hitachi, JP;
Masato Machida, Hitachi, JP;
Hideo Yoda, Hitachi, JP;
Kazuo Ikeuchi, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A turbine moving blade has a blade portion extending from the basal portion to the tip of the moving blade. The blade root portion is formed at the basal portion of the blade portion and engaged with a corresponding disk groove of a turbine rotor on a one-by-one basis, and the integral cover is formed at the tip of the blade portion integrally with the blade portion. The integral cover includes at least a pair of pressure and suction sloped surfaces inclined relative to the direction of the rotational axis of a turbine so as to restrain the elastic restoring force of the moving blade torsionally deformed at the time of installation of the moving blade by bringing the integral covers of mutually adjacent blades into contact.