Patents by Inventor Earl A. Hylton

Earl A. Hylton 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).

  • Electrical receptacle provided with an alarm system
    Patent number: 4189723
    Abstract: An electrical receptacle has a female socket with two receiving terminals for receiving the two prongs of a male plug. Each of the receiving terminals has two electrically separated contact elements. One contact element from each of the two receiving terminals is interconnected to the main source of electric power. The other contact element from each of the two receiving terminals is connected through a switch to an alarm. When the male plug is inserted into the socket, it electrically conducts current from the first contact element to the second contact element in each of the receiving terminals, to thereby maintain the switch in one of its two positions to prevent the alarm from being energized. However, when the plug is removed from the socket, the switch moves to its second position and the alarm is energized.
    Type: Grant
    Filed: February 28, 1978
    Date of Patent: February 19, 1980
    Inventor: Earl A. Hylton