Abstract: A wheel locking apparatus for hampering the rotation of a vehicle wheel is mounted on the vehicle by utilizing a pair of mounting wheel studs and its locking nuts, includes a pair of rods extending beyond the diameter of the wheel that are connected by rods spaced therebetween. Hinges are provided on the ends of the elongated members affixed to the wheel studs which has disposed thereon a pair of pivotable arm means which may be pivoted into a closed position and locked with a key device.

Abstract: An energy efficient apparatus suitable for use in hot, arid climates wherein a source of water is available includes in combination; a rotating wheel member which utilizes the buoyancy of outwardly extending members and a pair of temperature sensitive devices responsive to the change in ambient temperature to cause the moment about the axis of the rotating wheel member to increase, thereby aiding in the rotation of the rotating wheel member providing continuous output energy. The increase of the mechanical moment is caused by the mechanical change in position of an outwardly extending member and provides a portion of the energy obtained thereby to a spring and escapement mechanism which further couples additional energy to support the rotation of the rotating wheel member.

Abstract: A self-propelled roller skate requiring a minimum of energy of the wearer thereof includes an articulated frame having a front portion, which includes the propelling mechanism, and a rear portion, which includes a standing and braking apparatus. The propulsion of the roller skate is accomplished by the wearing individual merely raising the front portion of his foot and shifting his body weight to the heel of the same foot or to the opposite foot. Upon placing the raised foot or portion upon a flat surface and shifting his weight back to that foot or portion, propulsion is accomplished without requiring any additional physical energy.

Abstract: An energy saving ice skate attachment device for attachment to an ice skate, or the like, also suitable for training skaters, includes an elongated frame with a pair of outboard blades having its edge portion coplanar with the blade of the ice skate, is clamped to the ice skate by means of a U-shaped clamping device which affixes the frame of the attachment device to the shoe supporting post of the ice skate. Resilient means are disposed between the horizontal portion of the attachment device frame and the underside of the ice skate shoe, thereby permitting at least two blades to contact the surface of the ice even during turns, thereby reducing the energy needed to utilize the skates.