Patents by Inventor Ulf Alterby

Ulf Alterby 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: 6022388
    Abstract: A device for cleaning filter elements, such as filter bags, having upper open ends, in a filter installation for filtering polluted gas. The gas passing, during operation, from the outside and through said filter elements, in which installation filter elements are juxtaposed in a plurality of essentially parallel rows. The device includes an essentially horizontal distribution pipe, which extends essentially in parallel with the rows of filters elements and is adapted to be connected to a pressure medium source via a valve. The device further includes a plurality of nozzle elements, which are connected to the distribution pipe. The nozzle elements are adapted to direct pressure medium pulses into the upper open ends of the filter elements in at least two juxtaposed rows of filter elements.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: February 8, 2000
    Assignee: ABB Flakt AB
    Inventors: Bernt Andersson, Ulf Alterby