Patents by Inventor Arnkjell Renholt

Arnkjell Renholt 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).

  • Vacuum cleaner, operated by compressed air
    Patent number: 3971096
    Abstract: The present invention relates to a pressurized air-driven suction device for dust, mud, liquids, and similar substances, comprising one or more nozzles for ejecting pressurized air, and including appurtenant venturi tubes situated in an elongated tubular ejector housing, which at its outer end, if desired, may be provided with a silencer. A suction air pipe for supplying suction air is also mounted in said ejector housing, which is itself mounted through the end plate of a container, such as an oil drum having plug holes.
    Type: Grant
    Filed: May 23, 1974
    Date of Patent: July 27, 1976
    Assignee: A/S Norclean
    Inventor: Arnkjell Renholt