公开(公告)号：US10507507B2

公开(公告)日：2019-12-17

申请号：US15315403

申请日：2015-05-20

Applicant: SMS group GmbH

Inventor： Nikolaus Hoppenkamps ,  Gerd Jung ,  Guenter Panzer ,  Karsten Busch ,  Guenter Halleck

IPC: B21D25/04 ,  B21D1/00

Abstract: In order to widen the field of application of a stretcher-leveller having a minimum nominal width, at least one gripping head of the stretcher-leveller is connected to an adapter having clamping elements for clamping a plate to be stretched, the adapter having a nominal width that is smaller than the minimum nominal width of the stretcher-leveller, and a plate being stretched is connected to the gripping head via the adapter clamping elements and the adapter, before starting the stretching process.

公开(公告)号：US11712731B2

公开(公告)日：2023-08-01

申请号：US16675337

申请日：2019-11-06

Applicant: SMS group GmbH

Inventor： Nikolaus Hoppenkamps ,  Gerd Jung ,  Guenter Panzer ,  Karsten Busch ,  Guenter Halleck

IPC: B21D25/04 ,  B21D1/00

CPC classification number: B21D25/04 ,  B21D1/00

Abstract: In order to widen the field of application of a stretcher-leveler having a minimum nominal width, at least one gripping head of the stretcher-leveler is connected to an adapter having clamping elements for clamping a plate to be stretched, the adapter having a nominal width that is smaller than the minimum nominal width of the stretcher-leveler, and a plate being stretched is connected to the gripping head via the adapter clamping elements and the adapter, before starting the stretching process.

公开(公告)号：US11167338B2

公开(公告)日：2021-11-09

申请号：US16092871

申请日：2017-03-31

Applicant: SMS group GmbH

Inventor： Karsten Busch ,  Paul-Josef Nieschwietz ,  Frederik Knauf

IPC: F15B11/02 ,  B21J9/12 ,  F15B11/036 ,  F15B15/14

Abstract: A hydraulic cylinder comprising a cylinder, a piston element movably guided in the cylinder in a working direction and comprising an active surface, and a first opening for feeding a fluid into a cylinder chamber by the active surface. A working pressure of the fluid acting on the active surface drives the piston element in the working direction. The active surface includes a first partial surface and at least one second partial surface, the cylinder chamber being divided into a first sub chamber with the first opening by the first active surface and a second partial surface with a second opening by the second partial surface, and the partial surfaces are hydraulically separated from each other at least in a selectable operating mode.