Electrical connectors – With circuit conductors and safety grounding provision – Direct grounding of coupling part member passing into aperture
Patent
1990-05-31
1991-06-18
Paumen, Gary F.
Electrical connectors
With circuit conductors and safety grounding provision
Direct grounding of coupling part member passing into aperture
439851, H01R 1311
Patent
active
050246020
ABSTRACT:
The invention is a socket for a grounding prong used in a three prong electrical plug and a receptacle for the three prong plug. The socket being sufficiently spacious to prevent the socket from significantly stretching when a larger, U-shaped grounding prong is inserted into the socket, and having a ridge to allow a snug fit when a smaller tubular shape grounding prong is inserted into the socket.
REFERENCES:
patent: 2551423 (1951-05-01), DeVito
patent: 3158425 (1964-11-01), Pritulsky
patent: 3467939 (1969-09-01), Martin
patent: 3842391 (1974-10-01), Dechelette
patent: 3891289 (1975-06-01), Hanke
patent: 4018492 (1977-04-01), Eckart
patent: 4035045 (1977-07-01), Trevithick
patent: 4071872 (1978-01-01), Phillips
patent: 4386813 (1983-06-01), Griffin
Carnahan L. E.
Lee Michael
Moser William R.
Paumen Gary F.
The United States of America as represented by the United States
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