Electric plug locking device

Details Electric plug locking device Electric plug locking device

1993-09-22

1995-02-28

Schwartz, Larry I.

Electrical connectors

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

Prong cover

439133, H01R 1344

Patent

active

053932374

ABSTRACT:
An electric plug locking device (10), which remains affixed to an electric plug (13) for preventing unsupervised use of electrical equipment, has an upper housing member (11) movably mounted to a lower housing member (12). The upper housing member which has an opening (23) for receiving a plug terminal (15) moves from a position that shields the terminal to prevent it from being inserted into an electrical socket to a position that unshields the plug terminal to permit it to be inserted into the socket.

REFERENCES:
patent: 2538296 (1951-01-01), Crocker
patent: 2643787 (1953-06-01), Rockman
patent: 3926494 (1975-12-01), Maillaro
patent: 4488764 (1984-12-01), Pfenning et al.
patent: 4705335 (1987-11-01), Goebel
patent: 4865557 (1989-09-01), Kershaw
patent: 4997381 (1991-03-01), Oh
patent: 5052939 (1991-10-01), Koch
patent: 5061194 (1991-10-01), Herman et al.
patent: 5082450 (1992-01-01), Warren, Sr. et al.
patent: 5259782 (1993-11-01), Giffin
"Electrical Plug Lockouts", Champion America, Inc., Macedonia, Ohio.

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