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:
Mar. 01, 2005
Filed:
Sep. 03, 2003
Applicants:
Ryo Akiyama, Hitachi, JP;
Shinya Marushima, Hitachinaka, JP;
Manabu Matsumoto, Ibaraki, JP;
Masami Noda, Hitachinaka, JP;
Inventors:
Ryo Akiyama, Hitachi, JP;
Shinya Marushima, Hitachinaka, JP;
Manabu Matsumoto, Ibaraki, JP;
Masami Noda, Hitachinaka, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F02C007/18 ; F04D029/58 ;
U.S. Cl.
CPC ...
Abstract
A gas turbine having a rotor driven by a shaft with a cooling medium passageway therein has a heat shield pipe portion mounted inside the passageway which forms an air layer with a wall of the passageway to protect a bearing member metal supporting the shaft from the heat of a cooling medium and a seal shaft portion for forming a labyrinth seal to prevent leakage of the cooling medium are formed as one piece and constitute a heat shied seal pipe.