Wiring device with ground clamping plate

Details Wiring device with ground clamping plate Wiring device with ground clamping plate

1996-10-09

1999-02-02

Kincaid, Kristine L.

Electricity: conductors and insulators

Boxes and housings

With grounding means

174 57, 220 37, H05K 502

Patent

active

058668446

ABSTRACT:
The present invention relates to electrical wiring devices such as electrical receptacles, switches, and the like, and more particularly to wiring devices with a clamp for the ground connections to such devices. The present invention includes a pressure plate which engages the ground plate of a receptacle with legs of a pressure plate disposed within correspondingly shaped recesses adjacent the ground plate of the receptacle, so that the pressure plate is substantially constrained from rotation relative to the ground plate so that a wire can be received between the ground plate and the pressure plate when the screw is backed out a sufficient distance.

REFERENCES:
patent: 2684994 (1954-07-01), Kwake
patent: 3042094 (1962-07-01), Liljeberg
patent: 3414663 (1968-12-01), Glader
patent: 4312121 (1982-01-01), Tweed
patent: 4960964 (1990-10-01), Schnell et al.
patent: 5491892 (1996-02-01), Fritz et al.
patent: 5519169 (1996-05-01), Garrett et al.
patent: 5608611 (1997-03-01), Szudarck et al.

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