This is the residual class concerned with the driving of a loadby the conversion of heat, pressure, radiant, or gravitational energyinto mechanical motion. It includes a motor in combination withits energy supply or its exhaust treatment. It also includes themotors, per se, combinations of motors, and elements specializedfor use in such energy conversion that are not specifically providedfor elsewhere.
(1)Note. The mere nominal inclusion with the motor of an elementor machine driven by the motor is not generally considered sufficientto exclude the patent from the class.