Live circuit indicator for plugs and receptacles

Electrical connectors – With indicating or identifying provision – Connection indicating provision

Reexamination Certificate

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Reexamination Certificate

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07086892

ABSTRACT:
An electrical connector, such as one for receiving a plug, having at least two prongs for insertion into the connector, and having an electrical cable connected to the prongs of the plug and the connector in the usual way, includes a series circuit having an LED. The LED is located within the connector behind a window, and light from the LED provides a visual indication to a user that the connector is connected to a live circuit. The series circuit is located in a module that can be pre-assembled before being located within the connector and, when in the connector, the series circuit is electrically coupled directly to the contacts in the connector by means of spring contacts located in passageways in the module. Indexing means is provided for aligning the LED in the module with the window in the connector to insure that a user can see if the LED is on or off.

REFERENCES:
patent: 4111516 (1978-09-01), Wireman
patent: 4298864 (1981-11-01), Mahnke et al.
patent: 4318578 (1982-03-01), Ericson et al.
patent: 4500160 (1985-02-01), Bertsch
patent: 4606597 (1986-08-01), Bielefeld
patent: 4671597 (1987-06-01), Grill
patent: 5244409 (1993-09-01), Guss et al.
patent: 5409398 (1995-04-01), Chadbourne et al.
patent: 5567175 (1996-10-01), Warden et al.
patent: 6802741 (2004-10-01), Shatkin
patent: 6827602 (2004-12-01), Greene et al.

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