Three wire grounded, polarized stage plug and receptacle

Details Three wire grounded, polarized stage plug and receptacle Three wire grounded, polarized stage plug and receptacle

1987-09-08

1989-01-24

LaRoche, Eugene R.

Electrical connectors

With circuit conductors and safety grounding provision

439105, H01R 100

Patent

active

047998946

ABSTRACT:
A stage plug and receptacle for use with high power AC lighting such as that used in the theatrical, stage, and motion picture arts is disclosed which is both polarized and grounded. The stage plugs have a ground terminal added on the top side thereof in a configuration specially adapted to fit in only one orientation into a modified plugging box or receptacle having a corresponding recessed area to receive the ground terminal, thereby simultaneously achieving both grounding and polarization of the equipment. Existing unpolarized, ungrounded stage plugs and plugging boxes formerly used for DC lighting may be inexpensively and quickly converted to the polarized and grounded configuration of the present invention.

REFERENCES:
patent: 3733576 (1973-05-01), Cooper
patent: 3739317 (1973-06-01), Wise
patent: 3786392 (1974-01-01), McDaniel

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