Abstract: An electric power hybrid propulsion generation system for a motor vehicle which comprises a wind turbine rotatively mounted on a roof of the motor vehicle. Two independent electric generators are in the motor vehicle. Two drive belt assemblies extend between the wind turbine and the electric generators. An auxiliary battery array in the motor vehicle is electrically connected to the electric generators. An electric motor drive in the motor vehicle is powered by the auxiliary battery array to operate rear wheels of the motor vehicle independently from a fuel engine and transmission of the motor vehicle, which operates front wheels of the motor vehicle.

Abstract: This heel device is designed to cause a heel portion of a shoe to rebound when a person walks or jogs. Primarily, it consists of a base plate secured to the bottom of the heel portion of the shoe, and a leaf hinge is secured to the base plate and pivots. Projections are secured to the leaves of the hinge and include a pair of shafts that retain and support an endless rubber belt that provides the tension for the shoe to rebound.

Abstract: A shoe including a hollow chamber in its heel vented so to contract at each step and a curved steel leaf springs inside the chamber bearing between an upper inside and a bottom sole of the shoe heel, the springs extending forwardly-rearwardly.

Abstract: A pair of appliances, one of which is attachable under each foot of a person, so that the wearer can bounce vertically while walking or jogging, each appliance including a pair of vertically spaced apart platforms shaped like a foot, a plurality of compression coil springs between the platforms, and an adjustable toe strap and heel strap secured to the top platform for securement to the foot.