US PATENT SUBCLASS 102 / 202.4
.~.~.~ Voltage responsive variable resistance shunt (e.g., semiconductor shunts)

Current as of: June, 1999
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102 /   HD   AMMUNITION AND EXPLOSIVES

200  DF  IGNITING DEVICES AND SYSTEMS {15}
202.1  DF  .~ Accidental fuse ignition prevention means {2}
202.3  DF  .~.~ Fuse device resistive shunt {1}
202.4.~.~.~ Voltage responsive variable resistance shunt (e.g., semiconductor shunts)

DEFINITION

Classification: 102/202.4

Voltage responsive variable resistance shunt (e.g., semiconductor shunts):

(under subclass 202.3) Subject matter wherein the resistive shunt has a high resistance to normal operating voltage and a lower resistance to higher than normal voltage present between the wires or a wire and the casing to pass most of the currents caused by the higher voltage through the shunt.

(1) Note. The shunt may be a gas which conducts when the higher voltage ionizes the gas or a semiconductive material that breaks down and passes current.

(2) Note. Here are spark gaps.

SEE OR SEARCH CLASS

252, Compositions,

63+, for dielectric or electrically insulating compositions.

313, Electric Lamp and Discharge Devices, 325, for miscellaneous discharge devices.