Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2009-10-28
2010-12-14
Hofsass, Jeffery (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S635000, C318S434000
Reexamination Certificate
active
07852228
ABSTRACT:
A fan system including a motor, a driving unit, and a detector is disclosed. The driving unit is electrically connected to the motor and generates a driving signal to drive the motor and a detection signal. The detector is electrically connected to an output terminal of the driving unit and receives a voltage signal and the detection signal. When the motor operates normally, the detector outputs an examined signal to the output terminal of the driving unit. When the motor operates abnormally, the driving unit asserts the detection signal, and the detector is controlled by the asserted detection signal to transform the examined signal to an alarm signal according to the voltage signal to detect the abnormal state.
REFERENCES:
patent: 4479115 (1984-10-01), Holzhauer
patent: 4977375 (1990-12-01), Toth
patent: 5889469 (1999-03-01), Mykytiuk et al.
Huang Yueh-Lung
Lin Ming-Yen
Liu Ming-Lung
Teng Wen-Ping
Birch & Stewart Kolasch & Birch, LLP
Delta Electronics , Inc.
Hofsass Jeffery
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