.~.~ Devices for opening the ignition circuit when engine stops in order to save battery
Unofficial Alpha Subclasses: R A B C D
DEFINITION
Classification: 123/146.5
Devices for igniting the successive combustible charges supplied to and burned within an internal-combustion engine, comprising electrodes extending into the space occupied by the charge to be ignited and electrical means for producing a spark or a series of sparks between the said electrodes, whereby the charge is ignited and subordinate and auxiliary devices designed and especially adapted for use with igniting devices of the type set forth above and incapable of use in the manner contemplated in other relations.
SEE OR SEARCH CLASS
200, Electricity: Circuit Makers and Breakers,
19.01, and indented subclasses, for intermittent circuit-closers which include distributors for internal-combustion engine ignition.
315, Electric Lamp and Discharge Devices: Systems, appropriate subclasses, for electrical, systems for supplying electric energy to electric space discharge devices of the arc or spark type. Merely claiming the spark or arc system as an ignition system will not exclude the system from class 315, provided that the claims are not otherwise limited by claimed subject matter to use with an internal-combustion engine. Such systems which include a periodic switch driven by the engine for timing the spark with reference to the engine cycle are in this subclass (146.5) or the indented subclasses of this class (123). Merely calling the discharge device a "spark plug" will not exclude the patent from Class 315. Note especially
209, and indented subclasses of class 315, which provide for systems having a periodic switch in the supply circuit of the discharge device, and subclass 211, where the system includes a plurality of discharge devices and a distributor switch for distributing the energy to the discharge devices in sequence.
