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. 14, 2017
Filed:
Jan. 27, 2011
Kazuyuki Matsumoto, Tokyo, JP;
Yoshihiro Kuwamura, Tokyo, JP;
Hiroharu Oyama, Tokyo, JP;
Yoshinori Tanaka, Tokyo, JP;
Asaharu Matsuo, Kobe, JP;
Kazuyuki Matsumoto, Tokyo, JP;
Yoshihiro Kuwamura, Tokyo, JP;
Hiroharu Oyama, Tokyo, JP;
Yoshinori Tanaka, Tokyo, JP;
Asaharu Matsuo, Kobe, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
Provided is a turbine in which seal fins () are provided to a hub shroud () to protrude toward a bottom surface () of an annular groove (), small gaps (H) are formed between the tip ends of the seal fins and the bottom surface of the annular groove, and assuming that the axial distance between a first seal fin () disposed on the front edge side of the hub shroud among the seal fins and a front edge () of the hub shroud is (L) and the axial distance between the front edge of the hub shroud and an inside surface () of the annular groove is (Bu), the first seal fin is disposed to satisfy L/Bu<0.3.