Patents by Inventor Robert E. Bedford

Robert E. Bedford 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).

  • Heater safety control system
    Patent number: 3941553
    Abstract: A safety control system for use on a heater which shuts off the heater fuel supply if the heater flame is not present within a predetermined time after initial ignition is attempted or after re-ignition is attempted should the flame be extinguished. A flame sensor which makes use of the electrical conductivity of the flame is employed with a solid-state switch, silicon controlled rectifier, and time delay relay to provide a fast response control circuit for shutting off the fuel supply valve in the absence of flame after a predetermined delay.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: March 2, 1976
    Assignee: Scheu Manufacturing Company
    Inventor: Robert E. Bedford