US PATENT SUBCLASS 200 / 209
.~ Piston or plunger means


Current as of: June, 1999
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200 /   HD   ELECTRICITY: CIRCUIT MAKERS AND BREAKERS

182  DF  LIQUID CONTACT {17}
209.~ Piston or plunger means {1}
210  DF  .~.~> Contact attached to or unitary with piston or plunger


DEFINITION

Classification: 200/209

(under subclass 182) Subject matter wherein piston means (e.g., rod or plunger) are used to force the conductive liquid into electrical connection with the switch contacts.