US PATENT SUBCLASS 96 / 21
.~.~.~ Current sensing means

Current as of: June, 1999
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96 /   HD   GAS SEPARATION: APPARATUS

15  DF  ELECTRIC FIELD SEPARATION APPARATUS (E.G., ELECTRICAL PRECIPITATOR, ELECTROSTATIC TYPE, ETC.) {17}
18  DF  .~ With control means responsive to sensed condition {4}
20  DF  .~.~ Arc, spark, or flashover sensing means {1}
21.~.~.~ Current sensing means

DEFINITION

Classification: 96/21

Current sensing means:

(under subclass 20) Apparatus in which means are provided to detect electrical current or a change therein and to control or regulate the operation of the apparatus based on the detected electrical current or change therein.

SEE OR SEARCH THIS CLASS, SUBCLASS:

22, for electric field separation apparatus with control means responsive to electrical current, but without means responsive to arc, spark, or flashover.