Heat exchange – Side-by-side tubular structures or tube sections – With manifold type header or header plate
Reexamination Certificate
2005-05-17
2005-05-17
Leo, Leonard R. (Department: 3753)
Heat exchange
Side-by-side tubular structures or tube sections
With manifold type header or header plate
C165S076000
Reexamination Certificate
active
06892804
ABSTRACT:
The wall thickness of at least a portion, which is plastically deformed, of a protruding portion used for calking is reduced to less than that of the other portions. Due to the foregoing, the bending rigidity of the protruding portion is decreased. Therefore, it is possible to bend (plastically deform) the protruding portion by a relatively low-intensity force. Accordingly, it is possible to easily execute the calking work (calking process) without the need to extend the length of the protruding portion (length from a forward end of the protruding portion to a bent portion). As a result, even if the pressure-withstanding property of an inter-cooler is enhanced by increasing the wall thickness of core plates, it is possible to prevent the calking workability from deteriorating and without increasing the size of the inter-cooler.
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Office Action dated Sep. 13, 2002 from Swedish Patent Appln. No. 0200840-7.
Kobayashi Hisashi
Nozaki Takahiro
Yamanaka Yasutoshi
Denso Corporation
Leo Leonard R.
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