Patents by Inventor Jukka Heimonen

Jukka Heimonen 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).

  • Apparatus for cleaning a suspension, preferably a fiber mass suspension
    Patent number: 6182478
    Abstract: An apparatus for cleaning a fiber mass suspension, the apparatus comprising a receptacle and an inlet channel and an outlet channel for feeding the suspension into and for discharging it from the receptacle. In addition, the apparatus comprises air feed means for feeding air into the lower portion of the receptacle. The apparatus comprises at least one partition wall dividing the receptacle into spaces in such a way that the suspension may flow between the spaces at the lower portion and the upper portion of the partition wall, respectively. The air feeding means are positioned to feed air into one aeration space, whereby the air separates impurities from the suspension and makes the suspension flow on different sides of the partition wall upwards and downwards, respectively, so that a spiral flow is created around the partition wall from the inlet channel into the outlet channel.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: February 6, 2001
    Assignee: Valmet Corporation
    Inventors: Jouko Hautala, Jukka Heimonen, Veli-Matti Rajala, Ismo Hourula