Electrical box extension

Electricity: conductors and insulators – Boxes and housings – With electrical device

Reexamination Certificate

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Details

C174S057000, C220S003200, C220S003300, C220S003900

Reexamination Certificate

active

10971920

ABSTRACT:
Disclosed is an electrical box mud ring member adapted to either receive an electrical device or receive an extending member adapted to both receive an electrical device and be elevated relative to the mud ring via one or more elevating fasteners. Either the mud ring member or the extending member, or both, have protrusions that maintain mechanical and electrical contact between the two members. The electrical box mud ring member preferably has frangible electrical device mounting plates.

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