Heat exchange – Tubular structure – With discrete heat transfer means
Reexamination Certificate
2006-05-16
2006-05-16
Flanigan, Allen J. (Department: 3753)
Heat exchange
Tubular structure
With discrete heat transfer means
C165S179000
Reexamination Certificate
active
07044211
ABSTRACT:
A method of forming tubing with integral fins oriented parallel to its length, and to a heat exchanger tube produced by such a method. The invention involves extruding a tube so that the tube has at least one internal longitudinal passage, an external surface having a cross-sectional shape in a plane transverse to the extrusion direction, and at least one integral fin parallel to the extrusion direction and extending in a direction away from the external surface of the tube. The tube may be one of a plurality of tubes assembled in parallel to a pair of manifolds, and such tubes are preferably oriented so that their integral fins are substantially parallel, with the fin(s) of a given tube extending toward an adjacent one of the tubes.
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Flanigan Allen J.
Hartman Domenica N. S.
Hartman Gary M.
Hartman & Hartman
Norsk Hydro A.S.
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