Geometrical instruments
Patent
1980-01-21
1982-03-09
McQuade, John
Geometrical instruments
339113L, 339147P, H01R 13717
Patent
active
043185789
ABSTRACT:
Disclosed is an electrical connector which includes a ground fault detector and indicator. The detector is incorporated in a modular construction which is easily and conveniently mounted within the housing of the connector and may be easily replaced in the event of failure. Visual indication of proper connection and grounding is provided by a plurality of windows disposed circumferentially around the housing.
REFERENCES:
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patent: 2731629 (1956-01-01), Siderman
patent: 3258635 (1966-06-01), Carothers et al.
patent: 3890030 (1975-06-01), McDaniel
patent: 3924914 (1975-12-01), Banner
patent: 4021092 (1977-05-01), Ericson, Jr.
patent: 4058764 (1977-11-01), Kirchoff
patent: 4111516 (1978-09-01), Wireman
patent: 4118690 (1978-10-01), Paynton
Ericson John E.
Mahnke Earl
McQuade John
The Ericson Manufacturing Company
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