Patents by Inventor Gary A. Edwards

Gary A. Edwards 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).

  • High frequency power distribution system
    Patent number: 5444608
    Abstract: Novel high frequency power distribution systems are disclosed. The system of the present invention uses a relatively high frequency AC (e.g. 100 kHz or higher) and distributes it by a high frequency bus which includes magnetic coupling. AC/DC converters are magnetically connected to the bus by way of associated magnetic coupling and rectify the AC to obtain DC power to be used by a respective load. The bus includes an inductive element which, in one embodiment, forms a series resonant circuit with a capacitive element of the AC/DC converter when it is magnetically connected to the bus.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: August 22, 1995
    Assignee: Northern Telecom Limited
    Inventors: Praveen K. Jain, Gary A. Edwards, Carl Hubbard, Douglas R. Bannard
  • Pulse amplitude modulation sampling gate including filtering
    Patent number: 4199697
    Abstract: The present invention provides a pulse amplitude modulation sampling gate using inexpensive integrated devices having a novel feedback arrangement. The addition of a few passive components to the basic sampling gate allows the gate to coact as a three pole high pass filter. Costs are reduced by this approach by a large factor.
    Type: Grant
    Filed: July 5, 1978
    Date of Patent: April 22, 1980
    Assignee: Northern Telecom Limited
    Inventor: Gary A. Edwards