Patents by Inventor Rolf H. Naurath

Rolf H. Naurath 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).

  • Portable air pump apparatus
    Patent number: 4466780
    Abstract: The present invention relates to a portable air pump apparatus that will take in air and cause it to flow through a lower chamber, direct it up and into a centrifugal impeller rotating in an upper chamber, concentrate its flow and dispell it at a greater than atmospheric pressure. The direction and concentration of the air flow taken in is accomplished by a cooperating network of curved baffles and sealed chambers.
    Type: Grant
    Filed: January 28, 1981
    Date of Patent: August 21, 1984
    Assignee: Elco International, Ltd.
    Inventor: Rolf H. Naurath