Patents by Inventor Joseph P. Lagermasini, III

Joseph P. Lagermasini, III 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).

  • Patent number: 5680003
    Abstract: An improved coiled-coil filament for use in an incandescent lamp has a primary coil winding with a substantially uniform spacing between successive coil turns. The primary coil winding is wound around a second mandrel in a manner to provide a main coil body and leg portions extending therefrom. A helical bend is formed between the main coil body and the leg portions thereby allowing that the leg portions extend toward a seal region of the lamp envelope in a substantially parallel relation to each other. Once the main coil body has been set in shape, the first and second mandrels are removed such that the leg portions are disposed in the seal region of the lamp envelope in a spaceless, and optional spudless manner.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: October 21, 1997
    Assignee: General Electric Company
    Inventors: Robert W. Hartwick, Robert J. Kellner, Joseph P. Lagermasini, III, Bernard W. Rachel