Patents by Inventor Alf I. S. Jonasson

Alf I. S. Jonasson 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).

  • Device for separating particles from flowing medium
    Patent number: 5106488
    Abstract: The present invention relates to a device for separating particles from flowing medium, whereby separation of coarse particles occurs in a cyclone member (4) and separation of fine particles in a filter device (10) inside the cyclone member. For providing this separation of coarse particles in a cyclone member and additionally, fine separation in a cleanable filter device, there is, inside the cyclone member (4), provided a filter cleaning device (15) which engages filter material (16) included in the filter device (10) for cleaning said filler material from particles adhering thereto when the filter device (10) is rotated relative to the filter cleaning device (15), the filter cleaning device (15) relative to the filter device (10) or the filter device (10) and the filter cleaning device (15) relative to each other.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: April 21, 1992
    Assignee: AB Ph. Nederman & Co.
    Inventor: Alf I. S. Jonasson
  • Mobile electrostatic air filter for use in welding projects
    Patent number: D329081
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: September 1, 1992
    Assignee: AB Ph. Nederman & Co.
    Inventors: Alf I. S. Jonasson, Per N. Hedlund
  • Filter for a mobile fume extractor
    Patent number: D357303
    Type: Grant
    Filed: August 26, 1992
    Date of Patent: April 11, 1995
    Assignee: AB Ph. Nederman & Co.
    Inventors: Hakan R. Karlsson, Alf I. S. Jonasson