Patents by Inventor Alexander A. A. Van Dooren

Alexander A. A. Van Dooren 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: 5305845
    Abstract: A greatly improved, compactly dimensioned, three-wheeled wheelchair shuttle with a box shaped interior and a flat floor panel, the rear side of which can be closed by a folding ramp construction. With the aid of the rear wheel mounting construction and together with the aforementioned ramp construction pivoted on the rear of the wheelchair shuttle, the aforementioned floor panel can be lowered to the road surface, enabling a wheelchair to enter the wheelchair shuttle from the rear. The movement of the mounting construction for the rear wheels is achieved using special, high quality suspension elements which are controlled by a compressor and its associated components. The wheelchair shuttle, in accordance with the invention, has a separate rear wheel drive propelled by a battery powered electric motor.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: April 26, 1994
    Assignee: Freewiel Techniek
    Inventor: Alexander A. A. Van Dooren