Heat exchange – Non-communicating coaxial enclosures
Reexamination Certificate
2006-06-20
2006-06-20
Walberg, Teresa J. (Department: 3753)
Heat exchange
Non-communicating coaxial enclosures
C165S070000, C165S163000, C029S890036
Reexamination Certificate
active
07063132
ABSTRACT:
A water heater including a tank having a wall defining an interior for holding water is provided. A heat exchange assembly is positioned at least partially within the interior of the tank. The heat exchange assembly includes a metallic outer tube positioned within the interior of the tank. The outer tube has a wall with an inner surface and end portions positioned within the interior of the tank. The heat exchange assembly further includes a metallic inner tube extending within the outer tube and having end portions extending through the wall of the tank. A portion of the outer surface of the inner tube contacts a portion of the inner surface of the outer tube. An elongated passageway is defined between a portion of the outer surface of the inner tube and a portion of the inner surface of the outer tube to facilitate a flow of fluid.
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Bernreuter Wade W.
Gordon Michael
Bradford White Corporation
RatnerPrestia
Walberg Teresa J.
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