Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate
2007-04-10
2007-04-10
McNeil, Jennifer C. (Department: 1775)
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
C428S593000, C428S594000, C428S615000, C428S635000, C165S166000
Reexamination Certificate
active
10733133
ABSTRACT:
A heat exchanger of the plate-fin type has fins of one metal brazed to a plate made of a different metal for use in oil coolers, condensers, evaporators, and the like. The distortion-prone titanium fins of conventional heat exchangers may be replaced with another metal, such as a stainless steel or a nickel based alloy to provide a structure that is resistant to crushing at the brazing temperature. Fluid or air flow resistance (pressure drop) through the heat exchanger may also be improved if the selected fin metal forms better fin shapes and has fewer burrs than conventional titanium fins. The replacement material may also improve the heat transfer performance of the heat exchanger if the selected fin metal has higher thermal conductivity than titanium.
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Shapiro, A., et al., “State of the Art Titanium-Based Brazing Filler Metals”, Oct. 2003, pp. 36-43, vol. 82, No. 10, American Welding Society, Miami.
International Search Report dated May 31, 2005.
Hernandez Salvador L.
Lewucky Nikolay
Pohlman Matthew J.
Tai Edward S.
Caglar Esq. Oral
Honeywell International , Inc.
McNeil Jennifer C.
Savage Jason L.
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