Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Reexamination Certificate
2006-04-18
2006-04-18
Easthom, Karl D. (Department: 2838)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Ground fault protection
C361S045000, C361S046000
Reexamination Certificate
active
07031126
ABSTRACT:
A method and apparatus for a protection device for indicating when ground fault protection is not being provided by the protection device. The protection device includes source and load terminals between a conductive path and face terminals. The protection device further includes a latching mechanism, adapted to be operable between a first state in which the latching mechanism permits electrical contact between the source terminals and the load terminals and a second state in which the contact is broken; an alarm indicator, adapted to provide an indication that the protection device is not providing ground fault protection; and a fuse, adapted to blow when the latching mechanism fails to open during a manual test of the protection device.
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Bonilla Nelson
DeBartolo Joseph V.
'Hubbell Incorporated
Dang Robert T.
Easthom Karl D.
Goodman Alfred N.
Kendall Peter L.
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