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. 13, 2022
Filed:
May. 30, 2019
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-ku, JP;
Hiroki Shigeta, Chuo-ku, JP;
Abstract
An electromagnetic contactor () is connected between an AC power supply () and a load (), and is turned on during bypass power feeding. A control device () turns on a switch () and turns off the electromagnetic contactor () when an inverter () has a failure during inverter power feeding. The electromagnetic contactor () is turned on when a contact is closed by excitation of a coil according to a control signal from the control device (). The electromagnetic contactor () has a manual switch that can close the contact by being pressed from outside. An uninterruptible power supply device () includes a pressing force applying mechanism () that applies a pressing force to the manual switch, and a control circuit () that operates the pressing force applying mechanism when there occurs a failure that the electromagnetic contactor () cannot be turned on regardless of the control signal from the control device ().