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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.:

US 10263401 B1

PDFFull Text
Date of Patent:
Apr. 16, 2019

Filed:

Dec. 01, 2015

Pressure tank, gas insulated switchgear using same, and pressure tank manufacturing method

Applicant:

Mitsubishi Electric Corporation, Chiyoda-ku, Tokyo, JP;

Inventors:

Shintaro Yamada, Tokyo, JP;

Yukinobu Kamei, Tokyo, JP;

Assignee:

MITSUBISHI ELECTRIC CORPORATION, Chiyoda-Ku, Tokyo, JP;

Attorney:

Buchanan, Ingersoll & Rooney PC

Primary Examiner:

Daniel J Wiley

Int. Cl.
CPC ...
H01H 33/56 (2006.01); H02B 13/045 (2006.01); H02B 3/00 (2006.01); H02B 13/025 (2006.01); B23K 9/167 (2006.01); F17C 1/08 (2006.01); B23K 9/025 (2006.01); B23K 9/23 (2006.01); B23K 101/00 (2006.01); B23K 101/04 (2006.01); B23K 101/12 (2006.01); B23K 103/04 (2006.01); B23K 103/10 (2006.01); H01H 33/666 (2006.01);
U.S. Cl.
CPC ...
H02B 13/045 (2013.01); B23K 9/0256 (2013.01); B23K 9/167 (2013.01); B23K 9/23 (2013.01); F17C 1/08 (2013.01); H01H 33/56 (2013.01); H02B 3/00 (2013.01); H02B 13/025 (2013.01); B23K 2101/006 (2018.08); B23K 2101/045 (2018.08); B23K 2101/12 (2018.08); B23K 2103/05 (2018.08); B23K 2103/10 (2018.08); H01H 2033/6665 (2013.01);
Abstract

To obtain a pressure tank that achieves a high manufacturing efficiency and does not hamper storage of an open/close portion such as a vacuum valve in a pressure tank. A pressure tank of the present invention includes: a tank body having at least one penetrating slit-shaped mortise and having a space formed inside the tank body; a reinforcing member having a tenon portion formed at an end thereof so as to be directed in one direction, and having an electric field relaxation portion on a side opposite to the tenon portion, the reinforcing member being attached to an inner wall surface of the tank body with the tenon portion inserted into the mortise; and a welding portion sealing and fixing the mortise and the tenon portion with no gap therebetween, the welding portion being formed by melting an end of the tenon portion from outside of the tank body.

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