Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Reexamination Certificate
2007-04-20
2009-10-27
Paladini, Albert W (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
C361S093100, C361S091100, C361S044000, C361S087000
Reexamination Certificate
active
07609497
ABSTRACT:
A switching device for disconnecting and switching at least one line of a power supply is disclosed. The switching device may be, for example, a residual-current-operated protective device or a combination switch and includes a line-voltage-independent trigger device, a trigger element, such as a trigger relay, associated with the line-voltage-independent trigger device, as well as a line-voltage-dependent trigger device. The line-voltage-dependent trigger device has means for triggering the trigger element that is associated with the line-voltage-independent trigger device. The switching device has a simple construction, a reduced number of components, and also an enhanced functional reliability compared to a conventional switching device.
REFERENCES:
patent: 6697244 (2004-02-01), Bauer et al.
patent: 7068047 (2006-06-01), Ward
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Bauer Bernhard Dipi-ing; Fail safe differential current circuit breaker; Nov. 24, 1993; Fig. 1.
Bartonek Michael
Dobusch Gerhard
Day Ursula B.
Feiereisen Henry M.
Moeller Gebäudeautomation GmbH
Paladini Albert W
Patel Dharti
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