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:
Jul. 21, 2020
Filed:
Nov. 29, 2016
Mitsubishi Hitachi Power Systems, Ltd., Yokohama-shi, Kanagawa, JP;
Toyoharu Nishikawa, Tokyo, JP;
Yoshihiro Kuwamura, Tokyo, JP;
Hiroharu Oyama, Yokohama, JP;
Katsuhisa Hamada, Yokohama, JP;
Hideaki Sugishita, Tokyo, JP;
MITSUBISHI HITACHI POWER SYSTEMS, LTD., Yokohama-shi, Kanagawa, JP;
Abstract
There are provided a step seal, a seal structure, a turbo machine, and a method for manufacturing a step seal. The step seal suppresses leak of a fluid from a gap between a first structure and a second structure and is formed on the first structure so as to have a clearance between the step seal and a seal fin formed on the second structure. The first structure and the second structure face each other in a radius direction with the gap inbetween and rotate around an axis line relative to each other. The step seal includes: a step seal body having a step face facing an upstream side of a flow direction of the fluid and an opposed face facing the second structure; and a protrusion formed between the step face and the opposed face.