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:
Jan. 27, 2026
Filed:
May. 31, 2021
Mitsubishi Electric Corporation, Tokyo, JP;
Makiko Kawada, Tokyo, JP;
Yosuke Oyanagi, Tokyo, JP;
Shohei Sasayama, Tokyo, JP;
Yasumichi Hatanaka, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A gas insulation apparatus includes: a tank that includes a flange surrounding an opening and in which an insulating gas containing oxygen is enclosed; a lid that covers the opening; a bolt that fixes the lid to the flange; and a sealing member that is sandwiched between the flange and the lid, in which the sealing member includes a first O-ring that surrounds an entire circumference of the opening, and a second O-ring that surrounds the first O-ring, the first O-ring is made of fluorine-based rubber, and the second O-ring is made of ethylene propylene diene-based rubber.