Patents by Inventor Jouni Hyvärinen

Jouni Hyvärinen 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).

  • Vacuum system
    Patent number: 6470925
    Abstract: The invention relates to a method for transporting sewage in a vacuum system, which comprises a source (2) of sewage, which through sewer piping (1) is connected to a collecting or discharge space (15) for sewage, and means (4,5) for generating vacuum in the sewer piping (1). In order to attain a reliably operating system the method employs a rotary lobe pump (4,5) for generating vacuum, transported through the rotary lobe pump (4,5) to the collecting or discharge space (15) for sewage. The rotary lobe pump can also be used for emptying the collecting space.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: October 29, 2002
    Assignee: Evac International Oy
    Inventors: Jouni Hyvärinen, Tommi Naski