Electricity: circuit makers and breakers – Interlocking – Between plural switches
Reexamination Certificate
2006-06-13
2006-06-13
Friedhofer, Michael A. (Department: 2832)
Electricity: circuit makers and breakers
Interlocking
Between plural switches
C200S331000, C200S334000
Reexamination Certificate
active
07060918
ABSTRACT:
A standard 2-gang wallbox-mountable light switch assembly comprising two switches for controlling electrical power from two separate circuits, one normal and one emergency power, to two separate lighting loads is disclosed. The assembly comprises two toggle switches, a yoke common to both switches and an axle common to both toggle switches for operating in unison both toggle switches. A single handle is provided that is integral to the axle and extends through the yoke for manual grasping for switching on-off. A partition creates a barrier between the electrical components of the two toggle switches when mounted within a standard 2-gang wallbox. Separation of normal and emergency circuits is a requirement of the National Electric Code (NEC) 700.9 (B).
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