Patent ID: 6602107
Filing Date: 2003-08-05
Classification: A63H

Abstract:
A gravity-powered miniature toy vehicle, of a model roller coaster type comprising; a supporting chassis, at least one wheel rotationally connected to said chassis with freedom to rotate, at least one flywheel rotationally coupled to said wheel, a rotational coupling device wherein rotation of said wheel causes rotation of said flywheel when said wheel rolls on a track on which said vehicle is intended to roll wherein said rotational coupling device provides a turns ratio equal to a number of rotations of said flywheel per rotation of said wheel, wherein said turns ratio multiplied by a ratio of a diameter of said flywheel to a diameter of said wheel is at least 2, and wherein said toy vehicle is propelled substantially by a force of gravity alone from a point of elevation wherein changes in a kinetic energy of said vehicle result only from changes in gravitational potential energy of said vehicle and frictional energy loss.