EP 0775538 B1 19980812 - Pipe bending apparatus with hydraulic transmission
Title (en)
Pipe bending apparatus with hydraulic transmission
Title (de)
Hydraulisch angetriebene Rohrbiegevorrichtung
Title (fr)
Dispositif de pliage de tubes à commande hydraulique
Publication
Application
Priority
IT MI950811 U 19951123
Abstract (en)
[origin: EP0775538A1] A pipe bending apparatus with hydraulic transmission, operable with one hand, of the type comprising a cylinder (5,8,50,6) in which there is movable in both directions a die-carrying rod (1), comprises, fixed in correspondence with that (3) of its ends located within the cylinder, a seal element (4) defining together with portions of the walls of said cylinder a first and a second chamber (43,52) of volume variable in relation to the movements of said rod, said chambers being connected via conduits (21,36,56,53A,53B) and at least one intermediate chamber (23) to a reservoir (11) for a fluid. The intermediate chamber (22,23,24) comprises a hydraulic pump operable by one hand, and unidirectional valve means (22,24). The reservoir (11) comprises an at least partly deformable sealing wall (12). <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
B21D 7/063 (2013.01); B25B 7/126 (2013.01)
Designated contracting state (EPC)
AT CH DE ES FR GB IT LI
DOCDB simple family (publication)
EP 0775538 A1 19970528; EP 0775538 B1 19980812; AT E169529 T1 19980815; DE 69600518 D1 19980917; DE 69600518 T2 19990107; ES 2120795 T3 19981101; IT 237303 Y1 20000905; IT MI950811 U1 19970523; IT MI950811 V0 19951123
DOCDB simple family (application)
EP 96117812 A 19961107; AT 96117812 T 19961107; DE 69600518 T 19961107; ES 96117812 T 19961107; IT MI950811 U 19951123