Patents by Inventor Karlo P. Martens

Karlo P. Martens 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).

  • Combustion flash bulb
    Patent number: 4388065
    Abstract: High voltage-ignited combustion flash bulbs according to the invention have a first current conductor which extends into a mass of metal strips. The first current conductor is connected inside the envelope to a second current conductor 4 by means of an ignition mass. A porous mass of an electrically insulating material is provided between the second current conductor and the mass of metal strips. The material 8 at least reduces the possibility of failing ignition caused by the ignition current flowing from the first current conductor, via the mass of metal strips, through the ignition mass, to the second current conductor, instead of from the first current conductor, via a longer path through the ignition mass to the second current conductor.The flash bulb may be incorporated in a flash unit having several such flash bulbs.
    Type: Grant
    Filed: April 18, 1980
    Date of Patent: June 14, 1983
    Assignee: U.S. Philips Corporation
    Inventor: Karlo P. Martens