Switch-plug interlock

Details Switch-plug interlock Switch-plug interlock

1985-05-17

1986-08-05

Scott, J. R.

Electricity: circuit makers and breakers

Interlocking

Between plural switches

H01H 920

Patent

active

046045058

ABSTRACT:
A receptacle for receiving a plug includes a frame and an electrical connector mounted on the frame. A switch is electrically connected to the connector and can disconnect it. A manually operable interlock has an on and off position. This interlock is mounted on the frame for operating the switch to apply power to the connector after the securing of the plug into the connector. The interlock has a grasping device for grasping the plug on a rearward external surface of the plug. The grasping device prevents the removal of the plug in response to the interlock being placed in the on position.

REFERENCES:
patent: 1818290 (1931-08-01), Wulle
patent: 1924691 (1933-08-01), Lofgren
patent: 1934024 (1933-11-01), Anderson
patent: 1971990 (1934-08-01), Reynolds et al.
patent: 2015543 (1935-09-01), Bissell
patent: 2241828 (1941-05-01), Reynolds
patent: 2397595 (1946-04-01), Conlan
patent: 2441465 (1948-05-01), Bauroth
patent: 2470944 (1949-05-01), Parish
patent: 4335286 (1982-06-01), Nelson
patent: 4503293 (1985-03-01), Knecht

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