Patents by Inventor Vladimir Vorobyev

Vladimir Vorobyev 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).

  • Screw conveyor shape propeller
    Patent number: 8388391
    Abstract: The present invention features a screw propeller system for use in a machine including a watercraft or an aircraft. The system features two or more screw propellers installed in the machine. Each screw propeller comprises an axle with a spiral blade disposed on the axle, and a tube hub. A differential and disc-brake device is operatively connected to each the first screw propeller and the second screw propeller. The differential and disc-brake device functions to steer the machine.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: March 5, 2013
    Inventors: Vladimir Vorobyev, Anait Serobyan