Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Reexamination Certificate
2011-01-11
2011-01-11
Fureman, Jared J (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific voltage responsive fault sensor
C361S018000, C361S111000
Reexamination Certificate
active
07869176
ABSTRACT:
An overvoltage protection circuit for protecting a pass element in a controlled voltage supply circuit electrically connected between a circuit power supply interconnection terminal region suited for electrical connection to a circuit power supply and an output terminal, the pass element being protected from voltage surges that may occur on the circuit power supply interconnection with respect to a voltage reference interconnection. A voltage reference is provided electrically connected in series with a voltage. The voltage divider and the voltage reference are connected in series with one another between the circuit power supply interconnection and the voltage reference interconnection. A threshold switch is electrically connected to a corresponding one of the voltage divider output and one of the voltage divider terminating regions terminating regions, and has an output coupled to the pass element control region.
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Official Search Report and Written Opinion of the European Patent Office in counterpart foreign Application No. 07255090 filed Dec. 31, 2007.
Clark Christopher J
Fureman Jared J
Hamilton Sundstrand Corporation
Kinney & Lange , P.A.
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