Combustion – Timer – programmer – retarder or condition responsive control – By combustion or combustion zone sensor
Reexamination Certificate
2005-06-23
2009-06-30
Philogene, Haissa (Department: 2821)
Combustion
Timer, programmer, retarder or condition responsive control
By combustion or combustion zone sensor
C431S079000, C250S2140AG, C250S339150, C315S307000, C315S291000, C315S224000, C315S239000
Reexamination Certificate
active
07553152
ABSTRACT:
An electronic circuit for generating a trapezoidal excitation waveform includes a controllable frequency source and a trapezoidal waveform generator. The controllable frequency source generates a source waveform that, upon energization thereof, has an initial frequency value, and decreases in frequency to a substantially constant frequency value a time period after energization. The trapezoidal waveform generator receives the source waveform and, in response, generates a trapezoidal waveform at least when the source waveform frequency attains the substantially constant frequency value.
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European Search Report 06111285.0-2301, Jul. 26, 2006.
Madison Frank J.
Merry Mark F.
Miller Jeff D.
Honeywell International , Inc.
Ingrassia Fisher & Lorenz P.C.
Philogene Haissa
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