Patent ID: 7726390

Claim:
Hollow-chamber profile made of metal, especially for heat exchangers, consisting of an extruded base profile ( 10 ) with two parallel wide sides ( 16 , 17 ) and two narrow sides ( 18 , 19 ), where at least one channel ( 11 ) extends in the longitudinal direction of the base profile ( 10 ) through the interior space ( 23 ) in the base profile ( 10 ), wherein the narrow sides ( 18 , 19 ) are shaped in the direction perpendicular to the longitudinal dimension of the base profile ( 10 ), where left-oriented profilings ( 21 ) transverse to the longitudinal dimension and right-oriented profilings ( 22 ) transverse to the longitudinal dimension alternate with each other along the two narrow sides ( 18 , 19 ), and where the width (B) of the base profile ( 10 ) is the same over the entire length of the base profile ( 10 ), the narrow sides with the profilings have a uniform wall thickness along the entire length of the profile.