Combustion – Timer – programmer – retarder or condition responsive control – By combustion or combustion zone sensor
Reexamination Certificate
2005-05-17
2005-05-17
Lu, Jiping (Department: 3749)
Combustion
Timer, programmer, retarder or condition responsive control
By combustion or combustion zone sensor
C431S078000, C431S080000, C431S033000, C122S504000, C122S504100, C122S504300, C126S287500
Reexamination Certificate
active
06893253
ABSTRACT:
A gas-fired water heater is provided with a combustion shutoff system which precludes further combustion within the water heater's combustion chamber in response to a combustion temperature therein reaching a predetermined level correlated to and indicative of a predetermined, undesirably high concentration of carbon monoxide present in the combustion chamber. In various illustrated embodiments thereof, the combustion shutoff system is operative to terminate further combustion air inflow to the combustion chamber, or terminate further fuel flow to the burner portion of the water heater.
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Star Sprinkler Catalog Sheets, dated Sep., 1992.
Battelle Final Report “Evaluation of Firexx . . . ”, dated Aug. 15, 1994.
Archibald Thomas E.
Campbell James T.
Doss Garrett
Elder Gary A.
Gordon Michael W.
Konneker & Smith P.C.
Lu Jiping
The Water Heater Industry Joint Research and Development Consort
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