EP 0391781 B1 19920520 - DOUBLE TUBES FOR MIXED BOILER, METHODE OF PRODUCTION AND CORRESPONDING BOILERS
Title (en)
DOUBLE TUBES FOR MIXED BOILER, METHODE OF PRODUCTION AND CORRESPONDING BOILERS
Publication
Application
Priority
FR 8904609 A 19890407
Abstract (en)
[origin: EP0391781A1] Double tube for a mixed boiler, comprising rectilinear segments in which the two sections of pipe are juxtaposed laterally. Each section (A, B) is delimited on the side furthest from the other section by a sheet (1, 7), the two longitudinal edges (2, 3, 8, 9) of which are curved and are welded against the longitudinal edges of an intermediate partition (4) and this intermediate partition has shaped bosses (5), the tops (6) of which are in contact with and joined to said sheets. <IMAGE>
IPC 1-7
IPC 8 full level
F28D 7/10 (2006.01); F24H 1/48 (2006.01); F24H 1/52 (2006.01); F28D 1/03 (2006.01); F28F 1/02 (2006.01)
CPC (source: EP KR US)
F24H 1/48 (2013.01 - EP US); F24H 1/523 (2013.01 - EP US); F28D 1/0316 (2013.01 - EP US); F28F 3/00 (2013.01 - KR); F28F 2001/027 (2013.01 - EP US); Y10T 29/49366 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0391781 A1 19901010; EP 0391781 B1 19920520; AT E76497 T1 19920615; AU 5300990 A 19901011; AU 621734 B2 19920319; BR 9001638 A 19910507; CA 2013838 A1 19901007; CN 1046219 A 19901017; DE 69000108 D1 19920625; DK 0391781 T3 19920713; ES 2031403 T3 19921201; FR 2645633 A1 19901012; FR 2645633 B1 19910712; GR 3004676 T3 19930428; JP H02293598 A 19901204; KR 900016724 A 19901114; MA 21801 A1 19901231; PT 93682 A 19911231; TN SN90048 A1 19910305; TR 25998 A 19931101; US 4996950 A 19910305; ZA 902551 B 19910626
DOCDB simple family (application)
EP 90400895 A 19900402; AT 90400895 T 19900402; AU 5300990 A 19900409; BR 9001638 A 19900406; CA 2013838 A 19900404; CN 90101891 A 19900404; DE 69000108 T 19900402; DK 90400895 T 19900402; ES 90400895 T 19900402; FR 8904609 A 19890407; GR 920401002 T 19920522; JP 9050090 A 19900406; KR 900004004 A 19900324; MA 22060 A 19900403; PT 9368290 A 19900405; TN SN90048 A 19900405; TR 36790 A 19900406; US 50485990 A 19900405; ZA 902551 A 19900403