Patents by Inventor Alf Marlov Bredland

Alf Marlov Bredland 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).

  • Battery having mask which electrochemically inactivates limited surface of metallic component
    Patent number: 4059717
    Abstract: A battery has a metallic component the inner surface of which is in contact with the battery electrolyte and the outer surface of which is not in contact with the electrolyte. To prevent undesired corrosion a mask is placed over a portion of the inner surface in order to electrochemically inactivate the portion of the inner surface covered by it. Although the metallic component having the mask may be the positive electrode or a terminal, preferably it is the negative electrode and preferably the negative electrode is a metallic foil such as zinc, lead, magnesium, or aluminum or alloys thereof. The outer surface of the metallic component opposite the mask may be exposed to the air. An electrical lead may be connected to the outer surface of the metallic component opposite the mask.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: November 22, 1977
    Assignee: ESB Incorporated
    Inventors: Alf Marlov Bredland, Walter Lee Fong, Terry Glen Messing, John Walter Paulson