Patents by Inventor Jukka Antikainen

Jukka Antikainen 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: 4426257
    Abstract: A system for damping the pressure fluctuations in a paper machine headbox. The headbox applying the damping system comprises an equalizing chamber communicating with an air space, this equalizing chamber having an outlet/outlets for a channel/channels leading to the equalizing chamber as well as an inlet/inlets for a channel/channels leaving the equalizing chamber. The outlet chamber is disposed with regard to the inlet channel so, and the cross surfaces of the outlet and inlet channels have been dimensioned so that the jet of stock flowing out of the outlet and expanding divergently falls substantially inside the boundaries of the inlet.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: January 17, 1984
    Assignee: A. Ahlstrom Osakeyhtio
    Inventors: Jukka Antikainen, Osmo Evalahti, Tapio Waris