Circuit tester for three wire electrical outlets

Details Circuit tester for three wire electrical outlets Circuit tester for three wire electrical outlets

1974-10-21

1976-06-29

Mullins, James B.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324133, 340255, G01R 3102

Patent

active

039671950

ABSTRACT:
A hand held circuit tester for use in detecting and identifying wiring errors in standard three-wire electrical outlets. Indicator lights, connected between each pair of the three plug-type terminals, are positioned side-by-side on one end of the device. Reference characters may then be aligned with the individual lights and the condition of the wiring can readily be determined. Because of the location of the indicator lights, they may be viewed through openings on three sides permitting use of the device in awkward locations. The components used in the manufacture of the device permit easy assembly of the components into circuits and facilitate insertion of the circuits into an insulated housing to form the completed device.

REFERENCES:
patent: 3383588 (1968-05-01), Stull et al.
patent: 3559200 (1971-01-01), Walters
patent: 3588861 (1971-06-01), Meyer
patent: 3783371 (1974-01-01), McMillan

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