EP 1574269 A1 20050914 - Adjustable tongs for forming pipes
Title (en)
Adjustable tongs for forming pipes
Title (de)
Justierbare Klemmvorrichtung zum Formen von Rohren
Title (fr)
Dispositif de serrage réglable pour le formage des tubes
Publication
Application
Priority
EP 04380059 A 20040312
Abstract (en)
Adjustable tongs (1) for forming pipes (2), including polygonal-shaped clamps (130, 230) with a plurality of housings (150, 250) configured for adjusting to a diameter of the pipe (2) to be formed. The tongs are provided with opening and closing means configured for allowing the introduction of a pipe between the clamps (130, 230) and allowing encircling the pipe in a housing constituted of two housings (150, 250) in respective opposite faces of the clamps (130, 230). <??>The tongs also include a forming element (310) for forming the pipe according to a frusto-conical shape of the forming element (310). The clamps (130, 230) are pivotable about shafts (3110, 3210) for choosing and bringing face to face, selectively, tow housings (150, 250) with dimensions corresponding to the diameter of the pipe to be formed. The clamps (130, 230) comprise a plurality of plates (160, 260) overlaid and joined to one another to define a polygonal outer profile of the clamps (130, 230) and a plurality of grooves (170, 270) in each housing (150, 250). <IMAGE>
IPC 1-7
IPC 8 full level
B21D 41/02 (2006.01)
CPC (source: EP)
B21D 41/02 (2013.01)
Citation (search report)
- [Y] US 2711576 A 19550628 - WILSON FRANK R
- [Y] US 2563088 A 19510807 - WILKS JR KARL W, et al
- [A] JP H11290975 A 19991026 - MITSUBISHI MATERIALS CORP
- [A] DE 2506053 A1 19760826 - IMP EASTMAN CORP
- [A] PATENT ABSTRACTS OF JAPAN vol. 2000, no. 01 31 January 2000 (2000-01-31)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 04380059 A 20040312