Stoves and furnaces – Hot-air furnaces – Liquid or gaseous fuel
Reexamination Certificate
2011-06-28
2011-06-28
Basichas, Alfred (Department: 3743)
Stoves and furnaces
Hot-air furnaces
Liquid or gaseous fuel
C123S090120, C431S018000
Reexamination Certificate
active
07967007
ABSTRACT:
A heater can be configured to operate with either a first fuel at a first pressure or a second fuel at a second pressure and can include a fluid flow controller. In some embodiments, the fluid flow controller is configured to permit flow of fuel to a first passageway and to direct a first fuel to a first oxygen depletion sensor line when the controller is in a first position and permit the flow of fuel to a second passageway and to direct a second fuel to a second oxygen depletion sensor line when the controller is in a second position.
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Consumer Guide to Vent-Free Gas Supplemental Heating Prod
Basichas Alfred
Knobbe Martens Olson & Bear LLP
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