Liquid heaters and vaporizers – Flue – Vertical
Reexamination Certificate
2006-02-21
2006-02-21
Wilson, Gregory (Department: 3749)
Liquid heaters and vaporizers
Flue
Vertical
C122S044200, C138S038000
Reexamination Certificate
active
07000572
ABSTRACT:
Water heater apparatus for improving the efficiency of a water heater having a tank, a burner, and a flue with the flue being disposed within the tank for evacuation of burn gases therethrough includes an enhancing heat transfer baffle with the baffle having a truncated conical shape and positioned within the flue for directing combustion gases from the burner against a flue wall.
REFERENCES:
patent: 2067133 (1937-01-01), Wales
patent: 4823865 (1989-04-01), Hughes
patent: 4869232 (1989-09-01), Narang
patent: 4940042 (1990-07-01), Moore et al.
patent: 5682841 (1997-11-01), Schimmeyer et al.
patent: 5787846 (1998-08-01), Schimmeyer
patent: 6354248 (2002-03-01), Bourke
Hacker Walter A.
Wilson Gregory
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