Method for manufacturing coolant tube of heat exchanger
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United States of America Patent
Stats
-
Jul 22, 2003
Grant Date -
Apr 4, 2002
app pub date -
Jul 25, 2001
filing date -
Jul 25, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A coolant tube for use in a heat exchanger is manufactured by using a plate member as follows: the plate member is folded in substantially regular distances to form a plurality of folded portions; and two opposite ends of the plate member are joined in a manner that end parts of the folded portions are brought into contact with flat portions of the plate member to thereby form coolant flow passages.
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