Patents by Inventor Bjorn Vikshaland

Bjorn Vikshaland 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).

  • Pulse-controlled metering device
    Patent number: 5474401
    Abstract: A pneumatic metering device for metering powdered materials, for example in connection with feeding aluminum oxide and aluminum fluoride to an electrolysis cell for production of aluminum, includes a container in the form of a relatively long, closed channel or similar structure. A fluidizing element is fitted in the base of the channel for supply of air for fluidization of material which is located in the channel. The container is fitted with an inlet for feeding material to the container from a store in the form of a silo or similar and an outlet for metered discharge of material from the container. The area below the inlet is inactive and is not supplied with fluidizing air, whereas air is supplied intermittently to the fluidizing element which is designed to cover essentially all other parts of the base of the channel.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: December 12, 1995
    Assignee: Norsk Hydro a.s.
    Inventors: Knut A. Paulsen, Bernt Nagell, Gisle G. Enstad, Bjorn Vikshaland, Leiv Ognedal