Patent ID: 6482070
Filing Date: 2002-11-19
Classification: A63H

Abstract:
A gravity-powered miniature toy vehicle, of a model roller coaster type comprising:a supporting chassis, at least one axle rotationally connected to said chassis with freedom to rotate, at least one wheel with at least one flywheel rotationally coupled to said wheel, wherein said flywheel is coupled to said wheel by direct connection to the same said axle as said wheel, 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 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.