Patents by Inventor Tapio Punakivi

Tapio Punakivi 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: 4545503
    Abstract: Method for closing the gate of a rotary barking drum intended for barking of wood, and the gate of a barking drum. The gate is rotated so that it is shifted so as to close the discharge opening at the end of the barking drum partly or completely. During the closing movement, the center of the movement of rotation of the gate (1) is shifted and approaches the center of the cross-section of the drum. For the control of the closing movement, the gate is provided with two support members (2, 3), which can be displaced in a plane parallel to the gate along one common guide (4, 5) or along two separate guides. At least a part of the guide (4, 5) or guides is curved in the same direction as the mantle of the barking drum is curved.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: October 8, 1985
    Assignee: Rauma-Repola Oy
    Inventor: Tapio Punakivi