Electrical plug with retractable prong shield

Details Electrical plug with retractable prong shield Electrical plug with retractable prong shield

1994-06-01

1996-05-21

Bradley, P. Austin

Electrical connectors

With contact preventer or retractable cover part

Movably mounted

439140, H01R 1344

Patent

active

055184111

ABSTRACT:
A safety plug for an electrical cord, the plug having electrically conductive prongs with a pair of protective retractable sheaths of a dielectric material encasing the prongs, with preferably a separate spring biassing each prong to an extended position, the sheaths being retracted on plugging the safety plug into a conventional electrical socket.

REFERENCES:
patent: 3210717 (1965-10-01), Brown
patent: 3513435 (1970-05-01), Degaetano
patent: 3575684 (1971-04-01), McIntyre
patent: 3631320 (1971-12-01), Erkert
patent: 3754205 (1973-08-01), Lenky
patent: 3763457 (1973-10-01), Whippo
patent: 4340267 (1982-07-01), Nukaga
patent: 4391481 (1983-07-01), Golden
patent: 4445739 (1984-05-01), Wooten
patent: 4810199 (1989-03-01), Kae
patent: 5030119 (1991-07-01), Lowe
patent: 5167516 (1992-12-01), Tani et al.
patent: 5252082 (1993-10-01), Hsieh et al.

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