Patents by Inventor Mark A. Ruiter

Mark A. Ruiter 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).

  • Door assembly including a movable door with a flexible door panel
    Patent number: 5042556
    Abstract: A door assembly for a doorway opening, such as a garage opening, comprises a door with a flexible door panel. The flexible door panel is guided around rotatable guide wheels between a closed position and an open position. When in the open position, the flexible door panel is substantially horizontal to maximize the height clearance of the doorway opening.
    Type: Grant
    Filed: November 14, 1989
    Date of Patent: August 27, 1991
    Assignee: Polynorm N.V.
    Inventor: Mark A. Ruiter