US Patent 7952840 Receptacle with arc protection circuitry
Patent 7952840 was granted and assigned to Unitron on May, 2011 by the United States Patent and Trademark Office.
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An electrical receptacle includes at least one motion sensor for detecting movement of a blade of an electrical plug in the receptacle, an extraction detector operatively connected to the motion sensor for generating a signal in response to movement of the blade at a predetermined rate, a position detector operatively connected to the motion sensor for determining the position of the blade in the receptacle, a switch operatively connected to the extraction detector and the position detector for de-energizing the receptacle when the extraction detector detects extraction of the blade from the receptacle at a rate equal to or greater than the predetermined and wherein the extraction detector and switch are operative to de-energize the receptacle in less than six milliseconds when the extraction detector detects extraction of the blade from the receptacle at a rate equal to or greater than the predetermined rate.
US Patent 07952840 Receptacle with arc protection circuitry US Patent 7952840 Receptacle with arc protection circuitry
US Patent 07952840 Receptacle with arc protection circuitry
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