US PATENT SUBCLASS 439 / 680
.~.~.~.~ By key or guideway

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}
677  DF  .~.~.~ Polarized {3}
680.~.~.~.~ By key or guideway {1}
681  DF  .~.~.~.~.~> User adjustable key or guideway

DEFINITION

Classification: 439/680

By key or guideway:

(under subclass 677) Coupling part either (a) having a groove or slot thereon disposed parallel to the axis along which the coupling part engages its mating coupling part, which groove or slot is intended to cooperate with a member carried by the mating coupling part by slidingly receiving the member within the groove or slot to fix the relative angular relationship of the coupling parts about the longitudinal engagement axis whenever they are coupled; or (b) having a member thereon adapted to cooperate with a groove or slot disposed on the mating coupling part parallel to the axis along which the coupling part engages its mating coupling part, which member is intended to ride in said groove or slot to fix the relative angular relationship of the coupling parts about the longitudinal engagement axis whenever they are coupled.

SEE OR SEARCH THIS CLASS, SUBCLASS:

374+, for a coupling part having guiding means which may serve to polarize the coupling part.