Electricity: electrical systems and devices – Safety and protection of systems and devices – Circuit interruption by thermal sensing
Reexamination Certificate
2008-03-20
2009-06-23
Jackson, Stephen W (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Circuit interruption by thermal sensing
C361S104000, C361S106000
Reexamination Certificate
active
07551418
ABSTRACT:
Two devices for preventing internal combustion of equipment from spreading outwards includes a sampling circuit, a detecting and monitoring circuit, and a low-voltage datum power supply. The sampling circuit includes two thermal detectors. The detecting and monitoring circuit includes a first monitoring output end and a second monitoring output end. When two thermal detectors are both normal, the first monitoring output is inactive and the second monitoring output is inactive. When one of the thermal detectors is abnormal, the first monitoring output is inactive and the second monitoring output is active. When the two thermal detectors are both abnormal, the first monitoring output is active and the second monitoring output is active. The first monitoring output is configured to turn off the power supply of a fan and the second monitoring output is configured to drive an alarm unit.
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Jin Sheng
Ran Haosi
Wang Songping
Zhou Jianlin
Huawei Technologies Co. Ltd.
Jackson Stephen W
Kitov Zeev
Leydig , Voit & Mayer, Ltd.
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