Patents by Inventor Boyd H. Palsgrove

Boyd H. Palsgrove 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).

  • Apparatus for receiving low level digital signals transmitted over power lines
    Patent number: 4633218
    Abstract: Digital data is transmitted over AC power lines at typically a 300 baud rate and at a frequency of 130 kilohertz representing a binary ONE and 131 kilohertz representing a binary ZERO. Apparatus in the receiver relay including a quadrature detector converts the high frequency signals to digital binary signals which are applied to a microprocessor. The microprocessor generates signals to control relays in accordance with the information received from the AC power lines.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: December 30, 1986
    Assignee: Honeywell Inc.
    Inventors: Boyd H. Palsgrove, Max Hendrickson, Harry A. Cohen