Process for mounting lugs and/or projections on a thin metal she

Details Process for mounting lugs and/or projections on a thin metal she Process for mounting lugs and/or projections on a thin metal she

1997-12-22

2000-06-06

Hook, James F.

Pipes and tubular conduits

With flow regulators and/or baffles

Heat transfer

138 39, 138177, 138DIG4, 138DIG11, F15D 104

Patent

active

060706163

ABSTRACT:
A process for mounting lugs or projections on a thin metal sheet, by forming the lugs and/or projections out of the thin metal sheet by way of massive forming. Such a thin metal sheet in the form of a thin sheet metal strip is used preferably for forming rectangular tubes for an exhaust gas heat transfer device which, for guiding the exhaust gas, is provided with a bundle of these rectangular tubes.

REFERENCES:
patent: 2016720 (1935-10-01), Krause
patent: 2250542 (1941-07-01), Lodge
patent: 2252045 (1941-08-01), Spanner
patent: 2627283 (1953-02-01), Przyborowski
patent: 2634759 (1953-04-01), Twickler
patent: 2813708 (1957-11-01), Frey
patent: 3016921 (1962-01-01), Tadewald
patent: 4283824 (1981-08-01), Schatz et al.
patent: 4314587 (1982-02-01), Hackett
patent: 4899812 (1990-02-01), Altoz
patent: 5628447 (1997-05-01), Ziemek
patent: 5803162 (1998-09-01), Karbach et al.
patent: 5833389 (1998-11-01), Sirovich et al.

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