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:
Mar. 31, 2020
Filed:
Dec. 11, 2015
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Fuminori Watanabe, Tokai, JP;
Kazuhiko Fukutani, Kimitsu, JP;
Seiji Furusako, Kimitsu, JP;
Chisato Yoshinaga, Kisarazu, JP;
Tohru Okada, Toyota, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
There is provided a power supply device that supplies an output current to an electric processing device which performs electric processing on workpieces. The device includes: a first power supply; a magnetic energy recovery switch that receives a current supplied from the first power supply, and converts the received current into the output current; and a control unit that controls the magnetic energy recovery switch such that an electric current frequency of the output current includes a first electric current frequency and a second electric current frequency which are different from each other within a one-time electric processing time using the electric processing device.