Patents by Inventor John W. Beecroft

John W. Beecroft 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).

  • Bi-directional dc-to-dc power converter
    Patent number: 6069804
    Abstract: A multi-output, multi-directional power converter has an input bi-directional switch and at least a first output bi-directional switch, a coupled inductor having an input winding and at least one output winding. The coupled inductor input winding is connected in series with the input voltage source and an input bi-directional switch. Each coupled inductor output winding is connected in series with a corresponding output voltage source such as a capacitor and its respective output bi-directional switch. A clock circuit provides a first and second control signal. Each control signal has a first and second state. The second control signal has a state that is the complement of the first control signal. The first control signal is connected to the input bi-directional switch control terminal and the second control signal is connected to each respective output bi-directional switch control terminal.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: May 30, 2000
    Assignee: Condor D.C. Power Supplies, Inc.
    Inventors: Thomas M. Ingman, John W. Beecroft, Charles E. Mullett