Patents by Inventor Marcel Bellens

Marcel Bellens 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).

  • Motorized nautical recreational vessel
    Patent number: 6375522
    Abstract: The invention concerns a water sport machine consisting of a hull equipped with a pump-jet, the hull is rigid and provided with an inflatable envelope. The pump-jet consists of a light duty engine combined with a water sucking propeller located in a suction box opening into the hull bottom, the outlet of the suction box opening into a nozzle with decreasing cross-section and a helical wall.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: April 23, 2002
    Inventors: Marcel Bellens, Franck Mauvigner