Patents by Inventor Enar P. Frode

Enar P. Frode 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).

  • Patent number: 4754777
    Abstract: A valve for the addition of water to electrochemical accumulator batteries and for maintaining the flow of liquid at a constant level. A membrane in a valve body is biased by means of a spring against a wall arranged concentrically with an inlet orifice, the wall creating an inner chamber of circular cross-section, and an outer chamber which is of annular cross-section and is connected to an outlet connection via a constricted orifice. A spindle at the center of the membrane passes freely through the inlet orifice and exhibits outside the latter a conically enlarged part, the cross-sectional area of which increases in proportion to the distance to the inlet orifice, serving as a valve seat, and which is intended to provide a seal when the spring yields to the membrane.
    Type: Grant
    Filed: April 3, 1987
    Date of Patent: July 5, 1988
    Assignee: Sab Nife AB
    Inventor: Enar P. Frode