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:
Jul. 20, 2004
Filed:
Feb. 27, 2002
Applicant:
Inventors:
Hidemitsu Takebuchi, Chiba, JP;
Yoshihiko Matsui, Shizuoka, JP;
Akira Nishijima, Shizuoka, JP;
Yoshihiro Fukatsu, Shizuoka, JP;
Assignee:
Kabushiki Kaisha Meidensha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 3/366 ;
U.S. Cl.
CPC ...
H01H 3/366 ;
Abstract
An electrode of a vacuum circuit breaker has a cup member and a contact. The cup member has an opening and a periphery which is formed with a slit so as to form a coil section. An electric current flows in the coil section so as to generate a longitudinal magnetic field in a direction along an axis of the cup member. The slit is bent and continuously extends on the periphery from a first end of the cup member to a second end of the cup member opposite to the first end of the cup member. The contact is shaped into a plate, and seals the opening of the cup member.