US 4,538,871 AGranted

Set of plug with L-shaped pins and corresponding socket

OwnerChiu-shan Liinventor

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Abstract

An electrical plug and an outlet receptacle therefor wherein the plug pins are "L" shaped and the socket openings are correspondingly shaped to receive the L-shaped pins. The connectors within the outlet are offset from the entrance hole so that the plug has to be moved transversely to the direction of insertion for contact with these connectors.

Claims3

Dependent claims

An electrical plug and socket comprising:

a multi-prong plug wherein the connector prongs are L-shaped members extending from the plug so that one leg of the L extends longitudinally outwardly from said plug and the other leg of the L extends substantially perpendicular to said one leg from the outer end thereof;
a receptacle housing comprised of a hollow back part and a front cover attached to said back part;
L-shaped slots through said cover conforming to said L-shaped prongs having one leg of each slot adapted to receive said other leg of a respective prong inserted therethrough and the other leg of each slot adapted to allow movement of said inserted prongs transversely with respect to the direction of insertion;
a pair of electrical contact seats for each inserted prong comprising a first seat member attached to the inner surface of said cover and a second seat member attached to the inner surface of said back part in cooperative relationship with said first seat member so that when said cover is attached to said back part, said first and second seat members are juxtaposed in relative spaced relationship;
a pair of electrical contacts having a slot opening mounted on each one of said first seat members so that when said first and second seat members are juxtaposed said contacts are held between said seat members;
and
means to resiliently urge each pair of contacts together so that said slot opening slidingly and resiliently grips said other leg of an inserted respective L-shaped prong;
said seats being positioned with respect to said L-shaped slots so that they are displaced from the inserted ends of said L-shaped prongs when first inserted, but said slot openings in said contacts receive said inserted ends of said prongs when said plug is linearly moved transversely to the direction of insertion and after insertion, so that said plug cannot be withdrawn from said housing and disconnected from said contacts after said linear transverse movement by movement parallel to the direction of insertion.

5 more elements

Dependencies are inferred from the claim text.

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Abstract

An electrical plug and socket comprising:

a multi-prong plug wherein the connector prongs are L-shaped members extending from the plug so that one leg of the L extends longitudinally outwardly from said plug and the other leg of the L extends substantially perpendicular to said one leg from the outer end thereof;
a receptacle housing comprised of a hollow back part and a front cover attached to said back part;
L-shaped slots through said cover conforming to said L-shaped prongs having one leg of each slot adapted to receive said other leg of a respective prong inserted therethrough and the other leg of each slot adapted to allow movement of said inserted prongs transversely with respect to the direction of insertion;
a pair of electrical contact seats for each inserted prong comprising a first seat member attached to the inner surface of said cover and a second seat member attached to the inner surface of said back part in cooperative relationship with said first seat member so that when said cover is attached to said back part, said first and second seat members are juxtaposed in relative spaced relationship;
a pair of electrical contacts having a slot opening mounted on each one of said first seat members so that when said first and second seat members are juxtaposed said contacts are held between said seat members;
and
means to resiliently urge each pair of contacts together so that said slot opening slidingly and resiliently grips said other leg of an inserted respective L-shaped prong;
said seats being positioned with respect to said L-shaped slots so that they are displaced from the inserted ends of said L-shaped prongs when first inserted, but said slot openings in said contacts receive said inserted ends of said prongs when said plug is linearly moved transversely to the direction of insertion and after insertion, so that said plug cannot be withdrawn from said housing and disconnected from said contacts after said linear transverse movement by movement parallel to the direction of insertion.

5 more elements