Patents by Inventor Frank George Spanur

Frank George Spanur 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).

  • Primary dry cell having a novel venting closure
    Patent number: 4056659
    Abstract: A primary dry cell comprising a metal anode cup having a cathode mix therein, an open end, a central cathode rod through the open end, and a closure, the closure having a central bore and a venting sleeve defined by an annular groove in the closure and being disposed proximate the central bore.
    Type: Grant
    Filed: February 11, 1976
    Date of Patent: November 1, 1977
    Assignee: Union Carbide Corporation
    Inventors: Frank George Spanur, Vicente Santo Domingo Alberto
  • Safety switch for small diameter galvanic cells
    Patent number: 4025696
    Abstract: The Galvanic Cell assembly incorporates an integral safety pressure switch comprising an active member and an insulating member. The active member is an electrically conductive invertible spring member having an inclined deformable first section, a curved second section and a centrally disposed opening. The cell container may be dished inwardly to provide additional room for the switch and to provide added deflection under pressure for operating the switch.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: May 24, 1977
    Assignee: Union Carbide Corporation
    Inventors: Gary Ronald Tucholski, Frank George Spanur