Stoves and furnaces – Stoves – Cooking
Reexamination Certificate
2009-03-23
2011-11-29
Rinehart, Kenneth (Department: 3743)
Stoves and furnaces
Stoves
Cooking
C126S0390BA, C126S0390BA, C431S051000, C431S052000, C431S054000, C431S081000
Reexamination Certificate
active
08065998
ABSTRACT:
A cooking apparatus includes a housing and a cooking plate. Burners are located within the housing and below the cooking plate. A non-powered mechanical thermocouple probe is proximate to a pilot burner with a bi-metal element that produces an electrical signal when heated by the pilot burner. A pilot shutoff valve has an inlet connected to receive gaseous fuel from a gaseous fuel manifold, a pilot output connected to deliver gas to the pilot burner, a main burner output connected to deliver gas the burners, and a thermocouple probe input connected to receive the electrical signal produced by the bi-metal element. The pilot shutoff valve is biased to a default closed position where gas is prevented from flowing from the inlet to the pilot output and from the inlet to the main burner output. When the pilot shutoff valve is open, the pilot shut off valve permits gas to flow from the inlet to the pilot output and from the inlet to the main burner output.
REFERENCES:
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patent: 3976243 (1976-08-01), Christophel
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patent: 4147496 (1979-04-01), Oikawa
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patent: 6050808 (2000-04-01), Schloss
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patent: 2004/0025949 (2004-02-01), Wygnaski
patent: 55-075128 (1980-06-01), None
patent: 62-292985 (1987-12-01), None
See admitted Prior Art discussed in paragraphs [0003] and [0004] of the specification of the present application.
Espina Miguel A.
Yungbluth Christian M.
Corboy William
ITW Food Equipment Group LLC
Rinehart Kenneth
Thompson Hine LLP
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