Patents by Inventor Jouni Parviainen

Jouni Parviainen 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: 8157966
    Abstract: An apparatus in connection with wire water treatment in the approach system of a paper machine, board machine or corresponding web formation machine, which apparatus includes a deaeration tank connected to devices for generating a vacuum inside the deaeration tank. At least one wire water feed pipe extends into the tank, which pipe opens into a vacuum space above the liquid surface level in the tank. A wire water discharge duct is connected to the bottom part of the tank. The feed pipe extends above the liquid level in the tank so that the wire water overflows the edge of the feed pipe onto the liquid level in the tank and the wire water discharge conduit extends downward and is connected to a pump.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: April 17, 2012
    Assignee: Andritz Oy
    Inventors: Jouni Parviainen, Ari Pelkiƶ, Ari Vilpponen
  • Publication number: 20100126686
    Abstract: An apparatus in connection with wire water treatment in the approach system of a paper machine, board machine or corresponding web formation machine, which apparatus includes a deaeration tank connected to devices for generating a vacuum inside the deaeration tank. At least one wire water feed pipe extends into the tank, which pipe opens into a vacuum space above the liquid surface level in the tank. A wire water discharge duct is connected to the bottom part of the tank. The feed pipe extends above the liquid level in the tank so that the wire water overflows the edge of the feed pipe onto the liquid level in the tank and the wire water discharge conduit extends downward and is connected to a pump.
    Type: Application
    Filed: April 2, 2008
    Publication date: May 27, 2010
    Applicant: ANDRITZ OY
    Inventors: Jouni Parviainen, Ari Pelkiƶ, Ari Vilpponen
  • Patent number: 5308384
    Abstract: A deaeration vessel has a partition wall dividing the hollow vessel body into first and second portions, and defining a weir with a top surface establishing the level of pulp suspension in the vessel body. Turbulence in the deaerated pulp is minimized by providing the outlet for deaerated pulp immediately adjacent the partition wall, in the bottom of the vessel body first portion (on the same side of the weir as the inlet conduits for the suspension being deaerated). The weir is preferably configured so that the top surface, defining the liquid level within the vessel, overlies the outlet. A partition wall may extend substantially linearly at an angle of about 60.degree. to the bottom of the vessel, or it may have a vertical bottom with a top extending at an angle to the bottom, or it may be continuously curved from the vessel bottom to the top surface, about a horizontal and/or vertical axis.
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: May 3, 1994
    Assignee: A. Ahlstrom Corporation
    Inventors: Kari Kapanen, Seppo Lukkarinen, Jouni Parviainen, Pentti Vikio