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. 12, 2017
Filed:
May. 30, 2014
Ihi Corporation, Tokyo, JP;
Kozo Nita, Tokyo, JP;
Yoji Okita, Tokyo, JP;
Chiyuki Nakamata, Tokyo, JP;
Kazuo Yonekura, Tokyo, JP;
Seiji Kubo, Tokyo, JP;
Osamu Watanabe, Tokyo, JP;
IHI CORPORATION, , JP;
Abstract
The present invention is a turbine blade () having a hollow blade body (). This turbine blade () is provided with: cooling air holes () that penetrate the blade body () from an internal wall surface () to an external wall surface () thereof, and are provided with a straight tube portion () that is located on the internal wall surface () side of the blade body (), and an expanded diameter portion () that is located on the external wall surface () side of the blade body (); and with a guide groove () that is located on an internal wall of the expanded diameter portion () and that guides cooling air (Y) in the expanded diameter portion ().