Patents by Inventor Sixten Gjervaldsater

Sixten Gjervaldsater 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).

  • System at a multi-stage press
    Patent number: 5826501
    Abstract: Apparatus for pressing wet-formed fiber material boards in a multi-stage press is disclosed, including a vertically movable loading elevator with several stages for receiving transport plates for the boards, and a pusher for moving the transport plates from the loading elevator into the press. A hydraulic system is provided for driving both the loading elevator and the pusher.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: October 27, 1998
    Assignee: Sunds Defibrator Industries AB
    Inventor: Sixten Gjervaldsater