Patents by Inventor Alfred Strunz

Alfred Strunz 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).

  • Photoelectric start-stop controls for gas burner
    Patent number: 4028047
    Abstract: A device for electrically starting and stopping the operation of a gas burner in response to the shadow of the user's hand holding an object to be heated, the device including a solenoid valve in the gas line and a dimmer circuit with a directional photoelectric sensor, a switching amplifier, and a valve relay controlling the solenoid valve. The dimmer circuit can be bypassed for continuous operation by means of a selector switch.
    Type: Grant
    Filed: December 19, 1975
    Date of Patent: June 7, 1977
    Assignee: Firma Dr. Th. Wieland
    Inventors: Alfred Strunz, Jurgen Rohrer