US PATENT SUBCLASS 315 / 226
.~ Plural periodic switches or multiple contact periodic switch


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315 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS

209 R  DF  PERIODIC SWITCH IN THE SUPPLY CIRCUIT {11}
226.~ Plural periodic switches or multiple contact periodic switch


DEFINITION

Classification: 315/226

(under subclass 209) Systems wherein (1) the periodic switch is provided with two or more pairs of circuit interrupting contacts, or (2) two or more periodic switches are provided in the circuit, the circuit being intermittently interrupted at two or more different places.

SEE OR SEARCH THIS CLASS, SUBCLASS:

216, for this subject matter where there are a plurality of load devices in the system and a plurality of electrically operated periodic switches are used to distribute the current to the load devices.

222, for this subject matter where there is a transformer in the supply circuit of the load device and there are periodic switch means to interrupt the primary circuit and the secondary circuit of the transformer.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers, 19.06+, and indented subclasses, for multiple contact periodic switches, per se.