EP 0178236 B1 19880420 - APPARATUS FOR MAKING CORRUGATED TUBES FOR HEAT EXCHANGERS, AND SIMILAR APPLICATIONS
Title (en)
APPARATUS FOR MAKING CORRUGATED TUBES FOR HEAT EXCHANGERS, AND SIMILAR APPLICATIONS
Publication
Application
Priority
FR 8415263 A 19841002
Abstract (en)
[origin: US4624122A] For manufacturing tubes of the "corrugated" type, i.e. comprising at least one deformation of helicoidal profile, the smooth tube (28) is displaced axially inside a fixed sheath (7) about which rotates a sleeve (4) fixed to a head forming support for at least one radially mobile "corrugating" knurl; the displacement of the knurl is effected by a cam (25-26) which surrounds said head and which is actuated by a jack (13-14). Opposite this "corrugating" knurl there is provided a cutting knurl which cuts the tube at the end of the "corrugation" operation. The number of the "corrugating" knurls may vary.
IPC 1-7
IPC 8 full level
B21D 15/04 (2006.01)
CPC (source: EP US)
B21D 15/04 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0178236 A1 19860416; EP 0178236 B1 19880420; AT E33567 T1 19880515; DE 3562191 D1 19880526; FR 2570968 A1 19860404; FR 2570968 B1 19880819; US 4624122 A 19861125
DOCDB simple family (application)
EP 85420173 A 19851002; AT 85420173 T 19851002; DE 3562191 T 19851002; FR 8415263 A 19841002; US 78233085 A 19851001