EP 0718057 A3 19960710 -
Publication
Application
Priority
DE 4446506 A 19941225
Abstract (en)
[origin: EP0718057A2] Hollow bodies, partic. the ends of pipes, are enlarged with more than two expanding jaws (7) of sector shape, arranged about an axis (A). The jaws are separated by gaps (14) and have partly cylindrical working faces (13). On either side of each gap, edges (7c) of the jaws running parallel to the axis are broken, pref. by bevels. Pref. the sector-shaped end edges (7f) are also broken. The opening angle between two adjacent jaws is 40-90 deg., pref. 50-70 deg. Jaws are pref. precision cast and are expanded by a mandrel (4).
IPC 1-7
IPC 8 full level
B21D 41/02 (2006.01)
CPC (source: EP)
B21D 41/02 (2013.01)
Citation (search report)
- [YA] US 4753101 A 19880628 - SHULTZ WILLIAM E [US]
- [YA] WO 8800503 A1 19880128 - LIND HEATHER JOAN [AU]
- [DA] DE 4220794 A1 19940105 - WIRSBO ROHRPROD UND VERTR GMBH [DE]
- [Y] HEINRICH MAURI: "Der Vorrichtungsbau - Einteilung, Aufgaben und Elemente der Vorrichtungen", SPRINGER-VERLAG, BERLIN
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0718057 A2 19960626; EP 0718057 A3 19960710; DE 4446506 A1 19960627
DOCDB simple family (application)
EP 95119901 A 19951216; DE 4446506 A 19941225