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:
Nov. 30, 2021
Filed:
Feb. 17, 2017
Mitsubishi Hitachi Power Systems, Ltd., Yokohama, JP;
Yoshihiro Kuwamura, Tokyo, JP;
Eiji Konishi, Tokyo, JP;
Toyoharu Nishikawa, Tokyo, JP;
Shin Nishimoto, Yokohama, JP;
Hidekazu Uehara, Tokyo, JP;
MITSUBISHI POWER, LTD., Yokohama, JP;
Abstract
A rotary machine includes: a stationary body having a stationary-side peripheral surface; a rotating body having a rotating-side peripheral surface facing the stationary side-peripheral surface. One surface which is one of the stationary-side peripheral surface and the rotating-side peripheral surface has an upstream-side peripheral surface, a downstream-side peripheral surface, and a rearward step surface. The other surface has an upstream-side seal fin forming a minute gap between the upstream-side seal fin and the upstream-side peripheral surface; a downstream-side seal fin forming a minute gap between the downstream-side seal fin and the downstream-side peripheral surface. The rearward step surface has a guide surface extending downstream Dawhile directed toward the other surface and connected to the upstream-side peripheral surface.