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:
Apr. 21, 2009
Filed:
Oct. 26, 2006
Feng Zhang, Shanghai, CN;
Hongliang Chen, Shanghai, CN;
Fu Wang, Yueqing Zhejiang, CN;
Wusheng Chen, Yueqing Zhejiang, CN;
Yulin Zhang, Shanghai, CN;
Huaiyin Song, Yueqing Zhejiang, CN;
Feng Zhang, Shanghai, CN;
Hongliang Chen, Shanghai, CN;
Fu Wang, Yueqing Zhejiang, CN;
Wusheng Chen, Yueqing Zhejiang, CN;
Yulin Zhang, Shanghai, CN;
Huaiyin Song, Yueqing Zhejiang, CN;
General Protecht Group, Inc., Zhejiang, CN;
Abstract
An apparatus for testing the life of a leakage current protection device, comprising a microcontroller unit, at least one of a first fault detector and a second fault detector, at least one of an audio alarm and a visual alarm, a power supply circuit. In operation, the first fault detector and/or the second fault detector receive at least one signal from the leakage current protection device, and generate at least one DC voltage corresponding to the at least one signal to be received by the MCU. The MCU compares the at least one DC voltage with a predetermined threshold value to determine whether a fault exists in the leakage current protection device, and activates the alarm circuit if at least one fault exists.