Patents by Inventor Walter J. Valentine

Walter J. Valentine 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).

  • Electrical warning system for malfunctions in refrigeration
    Patent number: 4514724
    Abstract: An electrical warning system for malfunctions in refrigeration equipment driven by an electric motor comprises a main resistor connected in series with the motor to cause only a small voltage drop in the power supply to the motor, a high amp shunt across the main resistor comprising a diode, resistor and light-emitting diode, and a low amp shunt across the main resistor comprising a diode and light-emitting diode with the latter having in parallel a capacitor as well as a resistor in series with a zener diode.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: April 30, 1985
    Assignee: Paul W. Garbo
    Inventor: Walter J. Valentine