Patents by Inventor Paul V. Witwicki

Paul V. Witwicki 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 feeding fluidizing gas to the openings in a grid for supporting a bed of particles to be fluidized
    Patent number: 4968492
    Abstract: The device for feeding fluidizing gas to the openings (1) in a fluidizing grid (2) comprises an end piece (4) fitted on each bottom inlet (3) to each opening (1) and having a length e lying in the range between 0 and 0.5 times the diameter d of the end piece, and a cup (5a) into which the end piece extends, with the bottom (6) of the cup being at a distance i from the end piece, which distance may optionally be adjustable. The entire device is housed in a fluidizing gas feed box (5).
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: November 6, 1990
    Assignee: Charbonages de France
    Inventors: Arnaud Delebarre, Paul V. Witwicki