Lock plug

Details Lock plug Lock plug

1992-02-11

1993-03-16

Schwartz, Larry I.

Electrical connectors

Coupling part with actuating means urging contact to move...

Expandable contact or spreadable contacts

439102, H01R 1315

Patent

active

051940132

ABSTRACT:
A locking electrical plug is provided which has a cooperating tool/key which when rotated in a first direction causes a ground prong extending therefrom to be mechanically expand within a mating female receptacle, thereby preventing inadvertent or accidental removal of the plug from the receptacle, and when rotated in a second direction this again permits the removal of the plug from the receptacle.

REFERENCES:
patent: 1605904 (1926-11-01), Brunt
patent: 2593981 (1952-04-01), Capita
patent: 3858956 (1975-11-01), Garrett
patent: 3890025 (1975-06-01), Gray
patent: 4820187 (1989-04-01), May

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