Patents by Inventor Raimo Parkkila

Raimo Parkkila 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).

  • Regulation device and method for regulation of an air flow
    Patent number: 5829464
    Abstract: A regulation device and method for regulating an air flow, a gas flow or an equivalent medium flow in which slats can be moved to form an adjustable flow passage in their interior and have lateral edges overlapping each other. The cross-sectional flow area of the flow passage defined by the slats in their interior is adjustable by displacing the slats. A wire is passed around the slats and is displaceable so as to displace the slats and thus regulate the flow passing through the flow passage defined by the slats.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: November 3, 1998
    Assignee: Halton Oy
    Inventors: Arvo Aalto, Raimo Parkkila, Jouni Laurikainen, Andrei Livtchak