Safety plug with ground lock and prong locks

Details Safety plug with ground lock and prong locks Safety plug with ground lock and prong locks

1990-11-05

1992-01-21

Paumen, Gary F.

Electrical connectors

With circuit conductors and safety grounding provision

Direct grounding of coupling part member passing into aperture

439270, 439346, 439131, H01R 13639

Patent

active

050824503

ABSTRACT:
An electrical plug for the end of an electrical power cord. The plug includes plug prongs and a ground prong, all of which are moveable between retracted and extended positions. The prongs can be locked in the retracted and extended positions, as desired. When the prongs are locked in the retracted position, small children are prevented from attempting to connect the power cord to an electrical outlet. The plug can also be locked in an electrical outlet.

REFERENCES:
patent: 2261615 (1941-11-01), Cornwell
patent: 2490580 (1949-12-01), Colla, Jr.
patent: 2538296 (1951-01-01), Crocker
patent: 3345603 (1967-10-01), Cohen
patent: 3890025 (1975-06-01), Gray
patent: 3926494 (1975-12-01), Maillaro
patent: 4637965 (1987-01-01), Davis
patent: 4649332 (1987-03-01), Bell

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