US 12,453,998 B2
Device for the internal bending of pipes for pipelines
Oliver Baum, Hannover (DE)
Assigned to Bendforce GmbH, Hambühren (DE)
Appl. No. 18/682,757
Filed by BENDFORCE GMBH, Celle (DE)
PCT Filed Aug. 11, 2022, PCT No. PCT/EP2022/072586
§ 371(c)(1), (2) Date Oct. 29, 2024,
PCT Pub. No. WO2023/017129, PCT Pub. Date Feb. 16, 2023.
Claims priority of application No. 10 2021 121 057.7 (DE), filed on Aug. 12, 2021.
Prior Publication US 2024/0342780 A1, Oct. 17, 2024
Int. Cl. B21D 9/03 (2006.01)
CPC B21D 9/03 (2013.01) 20 Claims
OG exemplary drawing
 
1. Device for the internal bending of pipes for pipelines, comprising a base body positioned in a pipe to be bent, the base body comprising
on at least one side, at least one support surface for an inner wall of the pipe; and
at least one movable tool on a side opposite the support surface for introducing a bending force into the pipe the at least one movable tool being movable relative to the base body via at least one actuator for introducing the bending force;
wherein;
the at least one movable tool comprises a tool element which has at least two bending force introduction sections for introducing the bending force into the pipe, and the bending force introduction sections can be moved relative to the base body by at least one bending force introduction section actuator each;
the at least two bending force introduction sections are disposed in an outer region of the tool element; and
the tool element includes at least one elastic section between the at least two bending force introduction sections connecting the at least two bending force introduction sections.