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:
Jun. 26, 2018
Filed:
Dec. 12, 2012
Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;
Yoshihiro Kuwamura, Tokyo, JP;
Kazuyuki Matsumoto, Tokyo, JP;
Hiroharu Oyama, Tokyo, JP;
Yoshinori Tanaka, Tokyo, JP;
Hidekazu Uehara, Tokyo, JP;
Yukinori Machida, Tokyo, JP;
MITSUBISHI HITACHI POWER SYSTEMS, LTD., Kanagawa, JP;
Abstract
A turbine includes blades and a structure rotating relative to the blades and having a fluid flowing thereto. The turbine includes step portions that are provided in either radial tip portions of the blades or areas of the structure that face the radial tip portions; sealing fins that extend from the other of the radial tip portions of the blades or areas of the structure that face the radial tip portions toward the step portions, and form minute gaps between the sealing fins and the step portions; a flow collision surface that is provided upstream of the sealing fins in a flow direction of the fluid and against which the fluid collides; a protrusion that protrudes toward an upstream side from the flow collision surface; and a facing surface that faces the flow collision surface.