EP 0080833 A1 19830608 - Steel reinforcement rod and process for producing this rod.
Title (en)
Steel reinforcement rod and process for producing this rod.
Title (de)
Stahlstab für Bewehrung und Verfahren zur Herstellung dieses Stabes.
Title (fr)
Barre d'acier d'armature et procédé pour sa fabrication.
Publication
Application
Priority
- GB 8134660 A 19811118
- GB 8134665 A 19811118
Abstract (en)
A process for producing steel reinforcement rod for concrete by cold working comprises feeding an indefinite length of the rod through a cold working station at which the rod is twisted in one direction about its axis and is then untwisted. The invention extends to the product of this process. The rod enters the twisting station as it leaves pulley 22 and leaves the twisting station via pulley 34. The rod also passes round pulleys 18 which are mounted on a rotatable carriage 16 so that twist is imparted between pulleys 22 and 18 and untwisting occurs between pulleys 18 and 34.
IPC 1-7
IPC 8 full level
B21D 11/15 (2006.01); C21D 7/10 (2006.01); E04C 5/02 (2006.01)
CPC (source: EP)
B21D 11/15 (2013.01); C21D 7/105 (2013.01); E04C 5/02 (2013.01)
Citation (search report)
- [AD] DE 909562 C 19540422 - ALFRED OTTO KOLLING
- [AD] GB 1453233 A 19761020 - BRITISH STEEL CORP
- [X] US 4075880 A 19780228 - COPELAND WILLIAM RAEBURN
- [X] GB 1442097 A 19760707 - VOEST AG
- [Y] DE 1009586 C
- [Y] FR 1565871 A 19690502
- [A] DE 1452201 A1 19691030 - ALBERT FRIEDRICH WILHELM
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 82306142 A 19821118