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:
Jan. 22, 2013
Filed:
Jul. 08, 2009
Applicants:
Asako Inomata, Yokohama, JP;
Katsuya Yamashita, Tokyo, JP;
Koji Yamaguchi, Yokohama, JP;
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 11/06 (2006.01); F01D 25/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A steam turbineis provided with a casing, a turbine rotordisposed through the casing, and labyrinth portionswhich are disposed at the boundary between the casingand the turbine rotor. The steam turbineis further provided with a sealing steam pipefor supplying sealing steam to the labyrinth portionsand a gas supply pipefor supplying the labyrinth portionswith a cooling gas for cooling the turbine rotoror a heating gas for heating the turbine rotor