Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2005-02-24
2009-02-17
Wu, Daniel (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S577000, C340S578000, C340S635000, C340S640000, C431S075000, C431S069000
Reexamination Certificate
active
07492269
ABSTRACT:
Techniques for monitoring operation of a flame ignitor are provided. In one embodiment, multiple inputs are received. The inputs are received from at least one of a first group of inputs and a second group of inputs. The first group includes a flame rod voltage, a stop signal for deactivation of the flame ignitor, a fuel supply interruption signal, and an air supply interruption signal. The second group includes a start signal for activation of the flame ignitor, and a flame proven signal indicating presence of a flame produced by the flame ignitor. If inputs from the first group are received, a cause of a failure of the flame ignitor is determined. If inputs from the second group are received, a reliability of the flame ignitor is determined.
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Matteson David J.
Sequin Michel J.
Sutton James P.
Tobiasz Rebecca L.
ALSTOM Technology Ltd
Antonelli, Terry Stout & Kraus, LLP.
Tang Son M
Wu Daniel
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