Patents Assigned to Nachum D. Donner
  • Driving mechanism, and vehicle therewith
    Patent number: 4949814
    Abstract: A driving mechanism includes a rotatable support and a stretchable element which is being wound on the support by rotating the latter in one direction, and when the rotatable support is released the stretched element compresses and forcedly rotates the rotatable support in an opposite direction, thus providing a driving force in the opposite direction.
    Type: Grant
    Filed: November 14, 1989
    Date of Patent: August 21, 1990
    Assignee: Nachum D. Donner
    Inventor: Anatoly Borovsky