Metal working – Method of mechanical manufacture – Heat exchanger or boiler making
Reexamination Certificate
2006-12-12
2010-06-01
Chang, Rick K (Department: 3726)
Metal working
Method of mechanical manufacture
Heat exchanger or boiler making
C029S890030, C029S890043, C029S890045, C029S890047, C165S148000, C165S152000, C165S153000, C165S177000, C165S178000, C228S110100
Reexamination Certificate
active
07726024
ABSTRACT:
In a heat exchanger, a core portion includes a plurality of plate fins each shaped like a flat plate and a plurality of tubes in which a fluid flows and each of which is inserted into each of the plate fins to be mechanically bonded thereto. Further, an end portion in a longitudinal direction of each of the tubes is bonded to a header plate which constructs a part of a header tank. The manufacturing method for this heat exchanger includes inserting the tube into the plate fins; expanding the tube to attach the plate fins; connect the tube into the header plate; and vibrate the tube with respect to the plate while applying a load to the tube in the direction of the header plate.
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Office action dated Jun. 2, 2009 in corresponding Japanese Application No. 2004-110372.
Aoki Yuuichi
Hashimoto Hirokazu
Ishii Katsuya
Itoh Kazuo
Chang Rick K
Denso Corporation
Harrison, Dickey & Pierce, PLC
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