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:
Dec. 29, 2020
Filed:
May. 02, 2017
Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;
Eagle Industry Co., Ltd., Tokyo, JP;
Azumi Yoshida, Tokyo, JP;
Hidekazu Uehara, Tokyo, JP;
Shin Nishimoto, Yokohama, JP;
Naoya Tatsumi, Yokohama, JP;
Kohei Ozaki, Tokyo, JP;
Toru Kono, Tokyo, JP;
Ryu Kikuchi, Tokyo, JP;
MITSUBISHI HITACHI POWER SYSTEMS, LTD., Kanagawa, JP;
EAGLE INDUSTRY CO., LTD., Tokyo, JP;
Abstract
A seal segment includes a retainer extending in a circumferential direction of a rotary shaft on an outer circumferential side of the rotary shaft; a first seal body which has a plurality of first thin plate seal pieces extending inward in a radial direction from the retainer and laminated in the circumferential direction; a high-pressure side plate; a low-pressure side plate; and a second seal body having a plurality of second thin plate seal pieces which are laminated at an end portion of the retainer in the circumferential direction, extend inward in the radial direction, and have fluttering resistance higher than the first thin plate seal piece. The high-pressure side plate and the low-pressure side plate cover at least a part of the second seal body in the circumferential direction.