US PATENT SUBCLASS 439 / 321
.~.~.~ With means to prevent unthreading

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

296  DF  WITH COUPLING MOVEMENT-ACTUATING MEANS OR RETAINING MEANS IN ADDITION TO CONTACT OF COUPLING PART {15}
312  DF  .~ Coupling part with relatively pivotable concentric movement-actuating or retaining ring {3}
320  DF  .~.~ Threaded ring or ring adapted to engage threaded mating part {3}
321.~.~.~ With means to prevent unthreading

DEFINITION

Classification: 439/321

With means to prevent unthreading:

(under subclass 320) Coupling part combined with provision to block the encompassing member against rotating with respect to the mating part after connection has been established.