Patents by Inventor Michael W. A. Cross

Michael W. A. Cross 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).

  • Systems for transmitting information in an alternating current electricity supply system
    Patent number: 4254403
    Abstract: A system for transmitting information in an alternating current supply system wherein information is transmitted by reducing the instantaneous value of the supply voltage during a corresponding period in each of a selection of cycles of the supply voltage, the selection of cycles determining the information transmitted. To minimize disturbance of the system voltage the period of alteration includes a voltage zero. The alteration is effected by closing a switch connected across the system for the period the voltage reduction is required.
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: March 3, 1981
    Assignee: The General Electric Company Limited
    Inventors: Leonardo Perez-Cavero, Michael W. A. Cross, Geoffrey Fielding, Frederick M. Gray