US PATENT SUBCLASS 315 / 74
.~ Automatic shunt circuit closing or cut-out switch

Current as of: June, 1999
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315 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS

32  DF  COMBINED LOAD DEVICE OR LOAD DEVICE TEMPERATURE MODIFYING MEANS AND ELECTRICAL CIRCUIT DEVICE STRUCTURE {19}
74.~ Automatic shunt circuit closing or cut-out switch {1}
75  DF  .~.~> Shunt circuit closing

DEFINITION

Classification: 315/74

(under subclass 32) Subject matter, wherein the electric switch is structurally connected with the load device so as to complete an electrical circuit in shunt about the load device or some part thereof, and/or to open the load device current supply circuit, the switch being designed to automatically operate (1) when the load device becomes nonconductive or fails to operate properly, or (2) when the supply voltage and/or current becomes too high or too low for the proper operation of the load device, or (3) when more than a desired number of load devices are connected to the supply circuit.

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119, and indented subclasses for other systems under the class definition provided with an automatic shunt or cut-out for the load device.

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314, Electric Lamp and Discharge Devices: Consumable Electrodes,

10, and indented subclasses for consumable electrode discharge devices having an automatic shunt circuit closing means or cutout means structurally combined with the discharge device. 335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,

6+, for automatically operated electromagnets circuit interrupting devices.

337, Electricity: Electrothermally or Thermally Actuated Switches,

15+, for thermal current shunt circuit closing switches.