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:
Apr. 26, 2016
Filed:
Jun. 01, 2015
Applicant:
Hitachi, Ltd., Chiyoda-ku, Tokyo, JP;
Inventors:
Hiroaki Hashimoto, Tokyo, JP;
Kenichi Okubo, Tokyo, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 3/46 (2006.01); H01H 9/02 (2006.01); H01H 3/38 (2006.01); H01H 3/42 (2006.01);
U.S. Cl.
CPC ...
H01H 9/0271 (2013.01); H01H 3/38 (2013.01); H01H 3/42 (2013.01); H01H 3/46 (2013.01); H01H 2235/01 (2013.01); H01H 2239/036 (2013.01);
Abstract
The gas circuit breaker includes a main shaft which is a rotating shaft of a main lever connected to an opening spring, a cam shaft which is a rotating shaft of a cam connected to a closing spring, a main shaft holding member which holds the main shaft, a cam shaft holding member which holds the cam shaft, and a bracket which holds the main shaft holding member and the cam shaft holding member. A through hole is provided in a portion of the bracket between the main shaft holding member and the cam shaft holding member, and a heat generating member is provided at least on a portion of the through hole.