Patents by Inventor Heinrich B. Merker

Heinrich B. Merker 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).

  • Electric incandescent lamp for series arrangement having an electrically conductive vitreous body connecting oxide coated current-supply conductors
    Patent number: 4808885
    Abstract: The electric lamp for series arrangement comprises at least one current-supply wire of nickel wire, copper wire or copper cladded wire. A shortcircuit switch is provided, which consists of a vitreous mass, in which copper powder is dispersed and which is fused with the current-supply wires, and of an oxide skin, which is present on the said current-supply wire at the sealing-in area in the mass. The vitreous mass is electrically conducting. An electrical connection between the current-supply wires is not obtained, however, until the filament burns through and the oxide skin breaks down due to the overvoltage then occurring.
    Type: Grant
    Filed: June 18, 1987
    Date of Patent: February 28, 1989
    Assignee: U.S. Philips Corporation
    Inventors: Wolf-Dieter Bauch, Rolf Gervelmeyer, Heinrich B. Merker