Plug retaining device

Details Plug retaining device Plug retaining device

1978-06-26

1980-01-22

Desmond, E. F.

Geometrical instruments

H01R 1354

Patent

active

041847326

ABSTRACT:
A retaining device for preventing withdrawal of an electric plug from an extension cord socket responsive to forces exerted on a cord connected to the plug. The devices of the first and second embodiments are used with extension cord sockets. In the device of the first embodiment, a resilient C-shaped clamp abuts the opposite end walls of the plug and socket. The ends of the clamp are releasably connected to each other by a flexible chain which positively maintains the plug electrically connected to the socket. In the device of the second embodiment, a pair of retaining straps are secured to one of the connectors, and a pair of ears are secured to the other connector. The ears, engaged by the retaining straps, prevent withdrawal of the plug from the socket. An adaptor shell is provided to allow use of the device of the second embodiment with plugs substantially smaller in width than the socket.

REFERENCES:
patent: 1989823 (1935-02-01), Raabe
patent: 2720633 (1955-10-01), Westberg
patent: 2721313 (1955-10-01), English
patent: 3327280 (1967-06-01), Levine et al.

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