US PATENT SUBCLASS 439 / 642
.~.~.~.~ Plug having surrounding screw-thread-coupling contact

Current as of: June, 1999
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439 /   HD   ELECTRICAL CONNECTORS

625  DF  WITH INSULATION OTHER THAN CONDUCTOR SHEATH {10}
626  DF  .~ Plural-contact coupling part {7}
638  DF  .~.~ Two or more plural-contact coupling parts combined in one integral unit {6}
641  DF  .~.~.~ Unit includes coupling part having screw-thread-coupling contact {3}
642.~.~.~.~ Plug having surrounding screw-thread-coupling contact {3}
643  DF  .~.~.~.~.~> Combined with plural receptacles with each having internal screw-thread coupling contact
644  DF  .~.~.~.~.~> Combined with receptacle having internal bayonet-coupling contact
645  DF  .~.~.~.~.~> Combined with push-pull-coupling receptacle {1}

DEFINITION

Classification: 439/642

Plug having surrounding screw-thread-coupling contact:

(under subclass 641) Device wherein the plural-contact coupling part having the screw-thread-coupling contact further comprises a plug, and wherein the screw-thread-coupling contact is formed cylindrically around a protruding male portion of the plug and the said contact further has screw threads disposed about the exterior surface portion thereof, so that the plug may be screw coupled with and thereby electrically joined to a mating plural-contact receptacle having a complementary screw-thread-coupling counter-contact either located within or forming the plug-receiving recess thereof.