US PATENT SUBCLASS 439 / 677
.~.~.~ Polarized

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.~.~.~ Polarized {3}
678  DF  .~.~.~.~> By asymmetric disposition or asymmetric shape of duplicate contacts
679  DF  .~.~.~.~> By having or receiving contacts of similar type which are unequal in size or shape
680  DF  .~.~.~.~> By key or guideway {1}

DEFINITION

Classification: 439/677

Polarized:

(under subclass 660) Coupling part having indexing or keying means formed thereon or attachable thereto, which indexing or keying means is intended to cooperate with complementary indexing or keying means on a mating coupling part, so that either (a) the various contacts of the coupling part must always be associated with the same corresponding counter-contacts on the mating coupling part whenever the coupling part is coupled to its mating coupling part, or (b)

the coupling part must be capable of being coupled to only one specific, but to no other, mating coupling part among a plurality of mating coupling parts which are all structurally identical except for some variation of the indexing or keying means thereon.

SEE OR SEARCH THIS CLASS, SUBCLASS:

92+, for an electrical connector which may be polarized for safety grounding purposes.

633, for a plural-contact coupling part adapted to be coupled to the edge of a printed circuit board, the coupling part further including an indexing or keying means.

674, for a coupling part having plural bayonet-coupling contacts and further including an indexing or keying means.