Patents by Inventor Ashraf Makrm Dawoud Eskandr

Ashraf Makrm Dawoud Eskandr 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).

  • Transportation and power generating system of gravity and leaf springs
    Patent number: 7151322
    Abstract: Two weights and or springs mounted on two pivoted beams. A short end of each beam is interconnected with a gearbox by a crank and trace. The gearbox is interconnected with two other ends of the beams by linkages. An electric starter with battery imparts kinetic energy to lift one weight and let the other weight descend. The gearbox regulates the oscillation of two beams. The operator turns the electric starter off after the system is started. An output shaft imparts rotary motion of the gearbox to drive a vehicle, an airplane, or an AC generator.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: December 19, 2006
    Inventor: Ashraf Makrm Dawoud Eskandr