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:
May. 24, 2011
Filed:
Jan. 24, 2007
Applicants:
Masafumi Fukuda, Saitama, JP;
Takahiro Kubo, Yokohama, JP;
Inventors:
Masafumi Fukuda, Saitama, JP;
Takahiro Kubo, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 29/04 (2006.01); B21K 25/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A turbine rotoris disposed in a steam turbine, into which high-temperature steam of 650° C. or more is introduced, and separately configured of the portion made of the Ni-base alloy and the portion made of the CrMoV steel depending on a steam temperature and a metal temperature, and the individual portions having a small difference in coefficient of linear expansion are welded mutually.