Patents by Inventor Donnell H. Fox

Donnell H. Fox 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).

  • Replacement thermocouple apparatus for a pilot burner
    Patent number: 3930892
    Abstract: Replacement thermocouple apparatus for attachment to a pilot gas burner. The adaptor and thermocouple mounting portion are yieldably restrained against relative axially sliding movement to enable initial slip-on positioning of the thermocouple relative to the pilot burner flame. The thermocouple body is slightly rotated with an up and down movement within the adaptor to obtain final positioning of the thermocouple tip relative to the burner flame.
    Type: Grant
    Filed: November 26, 1973
    Date of Patent: January 6, 1976
    Assignee: Robertshaw Controls Company
    Inventors: Donnell H. Fox, Donald K. Murrell
  • Pilot burner thermocouple apparatus
    Patent number: 3930891
    Abstract: Thermocouple apparatus for attachment to a pilot gas burner. A thermocouple has a mounting portion. An adaptor is mounted thereon engageable with a pilot burner bracket. The adaptor and the thermocouple mounting portion are yieldably restrained against relatively sliding movement to permit adjustment of the thermocouple body relative to the burner flame. The thermocouple is readily removeable from the adaptor for replacement even where the flame-engaging portion of the thermocouple has expanded.
    Type: Grant
    Filed: November 26, 1973
    Date of Patent: January 6, 1976
    Assignee: Robertshaw Controls Company
    Inventors: Donnell H. Fox, Charles Matilo