Patents by Inventor Marita Biedenbach

Marita Biedenbach 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).

  • Washer for screws
    Patent number: 5201627
    Abstract: A ring-shaped washer (10) especially for wood screws (28) has an external circumferential edge area, which is directed downwards and cuts the wood (26) when the washer is being driven into it. At the same time the wood below the washer is compressed. This primarily serves to avoid a splitting up of the wood when screwing in the wood screw (28) and at the same time to increase the strength of the screwed connection.
    Type: Grant
    Filed: August 14, 1990
    Date of Patent: April 13, 1993
    Assignee: Hubert J. Koch
    Inventor: Marita Biedenbach
  • Device for planing and molding surface textures in wood boards
    Patent number: 4945959
    Abstract: A device for planing and/or molding surface textures in wood boards is provided with two planing heads (44,46) arranged one behind the other, the movement of which can be selectively cycled both in the vertical direction and transversely to the feed direction of the wood boards to be planed, thus permitting production of a variety of surface textures in the wood boards being planed.
    Type: Grant
    Filed: March 3, 1989
    Date of Patent: August 7, 1990
    Assignee: Hubert Josef Koch
    Inventor: Marita Biedenbach