Heat exchange – Casing or tank enclosed conduit assembly
Reexamination Certificate
2011-08-23
2011-08-23
Walberg, Teresa J (Department: 3785)
Heat exchange
Casing or tank enclosed conduit assembly
C165S158000
Reexamination Certificate
active
08002022
ABSTRACT:
The invention relates to a heat exchanger, in particular an exhaust gas heat exchanger for motor vehicles, having tubes (3) through which a gas can flow, which are arranged in a housing casing (2) and around which a liquid coolant can flow, wherein the tubes (3) have tube ends which are held by tube bases. It is proposed according to the invention that the tubes are embodied as flat tubes (3), and that, at least one side of the tubes (3), the tube ends (3a, 3b) are flared to form an approximately rectangular cross section and can be soldered to the tube bases (7, 8).
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Behr GmbH & Co. KG
Foley & Lardner LLP
Walberg Teresa J
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