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:
Sep. 18, 2012
Filed:
Mar. 23, 2009
Yoshihiko Matsui, Numazu, JP;
Mitsuyasu Shiozaki, Susono, JP;
Yoshihiko Matsui, Numazu, JP;
Mitsuyasu Shiozaki, Susono, JP;
Japan AE Power Systems Corporation, Tokyo, JP;
Abstract
A large-capacity vacuum circuit breaker that can increase a current shutdown capacity and enables its rated current to be increased includes at least two vacuum circuit breaker units placed side by side and connected in parallel. The two vacuum circuit breaker units are operated by a single common operating unit to concurrently perform current shutdown operations. Each vacuum circuit breaker unit has a vertical magnetic field generating means for generating a vertical magnetic field when an operation to shut down current is performed. The vertical magnetic field generating means is formed by vertical magnetic field electrodes provided in a vacuum container of each of the vacuum circuit breaker unit units or by an external coil provided on the outer circumference of each vacuum container.