Patents by Inventor Ken C. Johnson

Ken C. Johnson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electric wall switch with ground fault protection
    Patent number: 5161240
    Abstract: An electric wall switch has an outer casing on which incoming hot and cold line connectors and outgoing hot and cold load connectors are provided. A ground fault circuit interrupter is connected within the casing between the incoming and outgoing connectors for detecting ground faults and for opening the circuit between the incoming and outgoing connectors on detection of a ground fault. At least one of the outgoing hot load connectors is connected to the ground fault circuit interrupter via a switch for controlling powering of any device connected to that connector.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: November 3, 1992
    Inventor: Ken C. Johnson