US PATENT SUBCLASS 439 / 667
.~.~.~.~.~.~ And also having resilient or spring-biased center 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}
660  DF  .~.~ Plural-contact coupling part comprises receptacle or plug {12}
661  DF  .~.~.~ Having screw-thread-coupling contact {1}
662  DF  .~.~.~.~ Screw threads formed on cylindrical or annular contact {4}
666  DF  .~.~.~.~.~ Receptacle having internal screw-thread-coupling contact {1}
667.~.~.~.~.~.~ And also having resilient or spring-biased center contact

DEFINITION

Classification: 439/667

And also having resilient or spring-biased center contact:

(under subclass 666) Receptacle further having a second contact centrally located within the receptacle on the longitudinal axis along which the receptacle receives its mating plug, the second contact either (a) being formed from resilient material for yieldable movement of a portion thereof along the said longitudinal axis of engagement or (b) being resiliently biased for yieldable movement along the said longitudinal axis of engagement by the action of a spring means associated with the receptacle.