US PATENT SUBCLASS 439 / 307
.~.~.~ Having freely rotatable component 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}
304  DF  .~ Including lock for retaining means (e.g., key or combination lock or requiring "special" tool) {2}
306  DF  .~.~ Threaded coupling part {3}
307.~.~.~ Having freely rotatable component to prevent unthreading

DEFINITION

Classification: 439/307

Having freely rotatable component to prevent unthreading:

(under subclass 306) Coupling part in which electrical connection is maintained by allowing a component on the helically-ribbed portion to turn with respect to the helically-ribbed portion when in blocking condition, such that rotation thereof does not effect separation from the mating part.

(1) Note. Herein the coupling part and its mating part are prevented from being separated by the presence of the freely rotatable component since there is no way to hold the helically ribbed portion to turn with respect to the mating part.

(2) Note. The device of this subclass is intended to be a provision to prevent coupling separation and not be a coupling with parts relatively movable during use while preserving circuit continuity.

SEE OR SEARCH THIS CLASS, SUBCLASS:

47, for similar structure including relatively rotatable components intended to transmit electrical current while being rotated with respect to each other.