(under subclass 77) Systems provided with means responsive to the speed of either the motor which propels the vehicle or the speed of the vehicle for controlling the supply of electric current to the load device.
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78, for systems under the class definition where the generator which supplies the current to the load device is driven by the vehicle motor or by some driving means actuated by the vehicle's motion.
SEE OR SEARCH CLASS
73, Measuring and Testing,
488+, for a speed responsive device, per se.
123, Internal-Combustion Engines, 146.5+, for spark ignition systems for internal combustion engines which include a periodic switch driven by some part of the engine for timing the spark with reference to the
