Electrical connectors – With insulation other than conductor sheath – Plural-contact coupling part
Patent
1992-06-30
1993-09-28
Schwartz, Larry I.
Electrical connectors
With insulation other than conductor sheath
Plural-contact coupling part
439692, 439732, H01R 1310
Patent
active
052482685
ABSTRACT:
A mating electrical safety plug and receptacle. The plug includes a set of non-conductive tubular prongs, each of which shrouds a conductive element. The ends of each prong are open to receive a corresponding central post of the receptacle. The plug may include a ground prong. The receptacle is provided with a set of openings, each opening adapted to receive a corresponding prong. Each opening has a central post concentrically disposed, thus producing an annular cavity for the receipt of a tubular prong. Each central post includes a recess having a conductive element disposed therein. The receptacle may also be provided with a ground opening to accommodate a plug with a ground prong. The conductive element recessed within each central post engages with a respective conductive element shrouded by a corresponding prong. These mating conductive elements engage only when the plug is fully connected. The shrouding of the conductive element in each of the prongs essentially eliminates the risk of an individual encountering an electrical shock resulting from a partially disconnected plug. The indirect accessibility of the conductive element recessed within each central post further lessens the risk of electrical shock as a result of inserting a foreign object (other than the plug) into the receptacle.
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Litman Richard C.
Schwartz Larry I.
Vu Hien D.
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