Patents by Inventor Robert F. Bales

Robert F. Bales 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).

  • Method of making infrared emitter
    Patent number: 4017967
    Abstract: An infrared emitter panel comprising a body of refractory material, a non-helical continuous heating element of serpentine form embedded within said refractory material and having opposed ends projecting through said refractory material for connection in circuit to a source of electrical power. Said body of refractory material is provided with expansion zones adjacent each of the hair pin-like bent ends of said heating element for allowing unimpeded linear expansion and contraction of said heating element upon energization and de-energization respectively.
    Type: Grant
    Filed: June 7, 1976
    Date of Patent: April 19, 1977
    Assignee: Black Body Corporation
    Inventors: Harold D. Wells, E. Warner Hughes, Robert F. Bales