Abstract: A continuously variable belt-drive transmission of the type having spaced apart sheaves each provided with a plurality of sheave segments which may be moved radially inwardly and outwardly. A novel control is provided for selectively moving the segments inwardly or outwardly while the sheaves are rotating, the control including a motor carried by the body of each of the sheaves, the motor being operatively interconnected with the associated sheave segments. Power is transmitted to the motor by electrical wires, slip rings and brushes.

Abstract: A mobile snow-disposal unit having a vehicle including a sealable snow-collection receptacle having a water-holding internal compartment and an engine for propelling the vehicle utilizes a vacuum pump for lowering the internal pressure of the receptacle, when sealed, and a heat exchange system for routing waste heat from the engine to the internal compartment. By lowering the internal pressure of the receptacle so that the boiling temperature of water held by the internal compartment is about equal to the temperature of the waste heat entering the internal compartment, water held within the internal compartment is converted to steam for readily melting the collected snow.