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:
Oct. 15, 2002
Filed:
Jun. 28, 2000
Applicant:
Inventors:
Masatoshi Takeda, Tokyo, JP;
Isao Kamiyama, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 3/00 ;
U.S. Cl.
CPC ...
H02J 3/00 ;
Abstract
For a load connected to the connection points of first and second mechanical bypass switches connected to first and second power supply systems, respectively, and a semiconductor switch connected in parallel with the second bypass switch, the power supply is switched from the first power supply system to the second power supply system, the first bypass switch is opened, and a semiconductor switch conducts whereby current through the first bypass switch is commutated to flow through the semiconductor switch, and then the second bypass switch is closed, whereby the load is switched and connected to the second power supply system.