Electrical male plug lock

Details Electrical male plug lock Electrical male plug lock

1994-10-28

1996-04-16

Bradley, P. Austin

Electrical connectors

With unauthorized connection preventer, e.g., key or...

439134, H01R 1344

Patent

active

055076564

ABSTRACT:
The invention is a lock for male electrical connectors used with appliances and power equipment and consists of a housing with receiving slots for the connector prongs and a U-shaped spring in the housing containing nibs that engage the apertures on the connector prongs. A spring biased plunger engages the arms and cause them to release the prongs when depressed. Cooperating holes through the housing and the plunger allow a lock to pass through and disable the plunger. The spring biasing the plunger is selectibly changeable for situations where a stronger spring would negate the use of a lock. The housing is sufficiently thin that a three conductor plug could be locked without interference from the ground prong.

REFERENCES:
patent: 2664734 (1954-01-01), McEneaney
patent: 2733416 (1956-01-01), Evalt
patent: 4025140 (1977-05-01), Matys
patent: 4957446 (1990-09-01), Belsky
patent: 5055057 (1991-10-01), Boyer
patent: 5176527 (1993-01-01), Herbert
patent: 5277600 (1994-01-01), Meixler

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