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:
May. 11, 2021
Filed:
Sep. 29, 2017
Applicant:
Kobe Steel, Ltd., Hyogo, JP;
Inventor:
Shunsuke Morinaka, Hyogo, JP;
Assignee:
Kobe Steel, Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 15/447 (2006.01); F01D 11/02 (2006.01); F01D 11/08 (2006.01);
U.S. Cl.
CPC ...
F16J 15/4476 (2013.01); F01D 11/02 (2013.01); F01D 11/08 (2013.01); F16J 15/447 (2013.01); F05D 2240/127 (2013.01); F05D 2240/24 (2013.01); F05D 2240/55 (2013.01); F05D 2240/80 (2013.01);
Abstract
A labyrinth seal includes a step-up structure step portion which is a step portion on a high-pressure side, a step-down structure step portion which is a step portion which is a step portion on a low-pressure side, a fin and an annular groove. The fin is arranged on the low-pressure side relative to the step-down structure step portion. The annular groove is arranged in at least a part of a region on the low-pressure side relative to the step-up structure step portion as well as on the high-pressure side relative to the third fin.