EP 3643422 B1 20230607 - PRESSING DEVICE FOR WORK PIECES
Title (en)
PRESSING DEVICE FOR WORK PIECES
Title (de)
PRESSMASCHINE ZUM VERPRESSEN VON WERKSTÜCKEN
Title (fr)
MACHINE DE PRESSAGE DESTINÉE AU PRESSAGE D'OUTILS
Publication
Application
Priority
EP 18202607 A 20181025
Abstract (en)
[origin: US2020130313A1] A pressing tool for pressing workpieces is described. The pressing tool comprises a hydraulic pump for conveying a hydraulic fluid, an electric motor for driving the hydraulic pump, a working cylinder which is hydraulically connected to an outlet of the hydraulic pump, a pressure-relief valve which is hydraulically connected to the outlet of the hydraulic pump and which opens at a certain predefined pressure Pv of the hydraulic fluid, an electronic control for controlling the electric motor and a sensor 60 which monitors the state of the pressure-relief valve and emits a signal which describes the state of the pressure-relief valve to the electronic control. Furthermore, a method of operating such a pressing tool is described.
IPC 8 full level
F04B 49/03 (2006.01); B25B 27/10 (2006.01); F04B 17/03 (2006.01); F04B 49/06 (2006.01); F04B 49/08 (2006.01)
CPC (source: CN EP US)
B21D 39/048 (2013.01 - US); B25B 27/026 (2013.01 - US); B25B 27/10 (2013.01 - EP); B25F 5/005 (2013.01 - US); B30B 1/32 (2013.01 - CN); B30B 15/0094 (2013.01 - US); B30B 15/16 (2013.01 - CN); B30B 15/166 (2013.01 - CN US); F04B 17/03 (2013.01 - EP); F04B 49/03 (2013.01 - EP); F04B 49/06 (2013.01 - EP); F04B 49/08 (2013.01 - EP)
Citation (examination)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3643422 A1 20200429; EP 3643422 B1 20230607; EP 3643422 B8 20230726; CN 111098540 A 20200505; CN 111098540 B 20220906; US 11772349 B2 20231003; US 2020130313 A1 20200430
DOCDB simple family (application)
EP 18202607 A 20181025; CN 201911022317 A 20191025; US 201916663622 A 20191025