Patents by Inventor Frank J. Bowden

Frank J. Bowden 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).

  • Control system for refrigerant metering solenoid valve
    Patent number: 5463876
    Abstract: A system including a control circuit and a sensing circuit controls an expansion valve in a refrigeration system using pulse width modulation. The control circuit includes a ramp generator, a pulse width modulator, and a power switch. In response to input from the sensing circuit, the control circuit produces a control signal which cyclically opens and closes the valve. The average flow rate through the valve is varied in accordance with a condition of the refrigeration system which is detected by the sensing circuit.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: November 7, 1995
    Assignee: General Electric Company
    Inventors: Warren F. Bessler, Frank J. Bowden