Philip A Hogan

US Patent:

6482070, Nov 19, 2002

Filed:

Feb 21, 2001

Appl. No.:

09/790448

Inventors:

Philip A. Hogan - Ely MN 55731

International Classification:

A63H 2922

US Classification:

446462, 446444

Abstract:

A gravity-powered toy vehicle, such as a model roller coaster, with an energy-storing flywheel coupled to the wheels to reduce the vehicle velocity so it approaches that which is proportionately realistic for the model scale. The initial potential energy of the vehicle is mostly conserved over the course of the track just as with a real roller coaster. At all points on the track the velocity of the model vehicle is reduced by a constant proportion compared to an unrestrained free-fall vehicle. Thus the dynamic velocity profile of the toy vehicle is the same as for a full size vehicle throughout its descending and ascending journey, but at a proportionately reduced speed.

US Patent:

6602107, Aug 5, 2003

Filed:

Sep 5, 2002

Appl. No.:

10/236209

Inventors:

Philip A. Hogan - Ely MN 55731

International Classification:

A63H 2922

US Classification:

446462, 446444

Abstract:

A gravity-powered toy vehicle, such as a model roller coaster, with an energy-storing flywheel coupled to the wheels to reduce the vehicle velocity s it approaches that which is proportionately realistic for the model scale. The initial potential energy of the vehicle is mostly conserved over the course of the track just as with a real roller coaster. At all points on the track the velocity of the model vehicle is reduced by a constant proportion compared to an unrestrained free-fall vehicle. Thus the dynamic velocity profile of the toy vehicle is the same as for a full size vehicle throughout its descending and ascending journey, but at a proportionately reduced speed.