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. 15, 2021
Filed:
Jun. 13, 2017
Kobe Steel, Ltd., Hyogo, JP;
Shunsuke Morinaka, Hyogo, JP;
KOBE STEEL, LTD., Hyogo, JP;
Abstract
A labyrinth seal is included in a rotary machine. The rotary machine includes a first member, a second member facing the first member, and a gap formed between the first member and the second member. The labyrinth seal includes a step portion, a high-pressure-side fin on the high-pressure side relative to the step portion, a low-pressure-side fin on the low-pressure side relative to the step portion, and an annular groove. The step portion is configured to allow a portion of the second member on the low-pressure side relative to be arranged closer to the other side of the facing direction than a portion of the second member on the high-pressure side. The annular groove is arranged in at least a part of a region on the low-pressure side and on the high-pressure side, relative to the low-pressure-side fin.