US PATENT SUBCLASS 439 / 643
.~.~.~.~.~ Combined with plural receptacles with each having internal 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  DF  .~.~.~.~ Plug having surrounding screw-thread-coupling contact {3}
643.~.~.~.~.~ Combined with plural receptacles with each having internal screw-thread coupling contact

DEFINITION

Classification: 439/643

Combined with plural receptacles with each having internal screw-thread-coupling contact:

(under subclass 642) Device wherein the single unitary structure, in addition to having embodied therein the plug with the externally disposed screw-thread-coupling contact, also has embodied therein a plurality of plural-contact coupling parts in the form of receptacles, each receptacle includes a contact formed with screw-thread-coupling means adapted to receive therein or therebetween, by means of relative screw motion, the externally disposed screw-thread-coupling counter-contact carried by another plural-contact plug, whereby each receptacle may be screw coupled with and thereby electrically joined to a mating plural-contact plug having a complementary screw-thread-coupling counter-contact externally located thereon.

(1) Note. The screw-thread-coupling contact of any receptacle either may be located within or may form the plug receiving recess of the receptacle.

(2) Note. Usually, the screw-thread-coupling contact of each receptacle is a cylindrically hollow member having screw threads formed on the interior surface portion thereof.