Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2005-11-17
2008-03-11
Tweel, Jr., John (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S507000, C073S001060, C073S023310
Reexamination Certificate
active
07342505
ABSTRACT:
A first gas sensing element is provided in a first position to measure a concentration of a gas continuously, and a second sensing element is provided in a second position to measure the concentration of the gas intermittently. The second position is in close proximity to the first position. A deterioration determination unit is connected with the first and second sensing elements to make a determination as to whether the first sensing element becomes deteriorated, by comparing output values from the first and second sensing elements. A power controller is configured to supply the second sensing element with electric power throughout waiting periods during which the second sensing element stops measuring the concentration of the gas, and an amount of the electric power supplied throughout waiting periods is smaller than that supplied throughout operating periods during which the second sensing element continuously measures the concentration of the gas.
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Oishi Hidetoshi
Saito Takashi
Sasaki Takashi
Suzuki Akihiro
Fish & Richardson P.C.
Honda Motor Co. Ltd.
Tweel , Jr. John
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