Safety twist lock connector for an extension power cord

Details Safety twist lock connector for an extension power cord Safety twist lock connector for an extension power cord

1989-06-26

1990-03-13

Desmond, Eugene F.

Electrical connectors

With coupling movement-actuating means or retaining means in...

Retaining means

439337, H01R 13625

Patent

active

049079859

ABSTRACT:
The twist lock connector of the invention includes an UL approved conventional twist to connect male and female mating ends of a pair of extension power cords for temporary supplying AC power to a work site or the like from a remote power source. The mating plugs of the first embodiment are triangular in cross-section and when connected one of the flat side surfaces rests on the support surface. In a second embodiment the mating plugs when connected have a semi-circular cross-section with the flat surface resting on the support surface. In a third embodiment, the mating plugs when connected form a rectangular cross-section. One of the larger surfaces rests on the support surface when the power cords are in use. In each of the three embodiments, the mating plugs taper or down scale in dimension toward their respective extension power cords.

REFERENCES:
patent: D301335 (1989-05-01), Audrain
patent: 4221449 (1980-09-01), Shugart, Jr.

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