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. 02, 2021
Filed:
Apr. 14, 2017
Mitsubishi Hitachi Power Systems, Ltd., Yokohama, JP;
MITSUBISHI POWER, LTD., Yokohama, JP;
Abstract
A steam turbine rotor blade includes a protrusion portion () which is provided on a tip end portion of a blade body (), on which a leading edge portion () is formed, in a blade height direction and protrudes from a suction-side surface () toward the leading edge portion () side, and a transition-region seal member which is provided so as to cover at least a portion of a base end-side surface of the protrusion portion () and a leading edge-side transition region, which faces the leading edge portion () side, of a connection portion between the protrusion portion () and the suction-side surface (), the transition-region seal member being formed of a material having a hardness higher than that of the blade body ().