Patents Examined by Margaret A. Focarfino
  • Primer material and photoflash lamp
    Patent number: 4696641
    Abstract: An improved primer material for use in a high-voltage photoflash lamp is provided. The primer material includes electrically insulating beads which have been coated with a friction-reducing material. The primer also includes an oxidizing agent, and a binder, and a combustible metal powder, part of the combustible metal powder being in larger particle form. A high-voltage photoflash lamp including the improved primer material of the present invention is also disclosed.
    Type: Grant
    Filed: August 11, 1986
    Date of Patent: September 29, 1987
    Assignee: GTE Products Corporation
    Inventors: John W. Shaffer, Ronald E. Sindlinger