Patents by Inventor Vesa Wikman

Vesa Wikman 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).

  • Method and apparatus for separating gas with a pump from a medium being pumped
    Patent number: 5019136
    Abstract: The method and apparatus include that the rear vanes (11) of the pump or the members operating therewith are arranged so that they either direct the flow of the medium, generated by the combined effect of forces with different directions and different intensities directed at the medium in the space behind the impeller in the vane gaps of said rear vanes, past gas discharge opening (12) in the rear wall of the pump or they slow down said flow so that its extension to said gas discharge opening (12) is prevented.
    Type: Grant
    Filed: April 11, 1989
    Date of Patent: May 28, 1991
    Assignee: A. Ahlstrom Corporation
    Inventors: Jorma Elonen, Jukka Timperi, Reijo Vesala, Vesa Wikman