EP 2307156 B1 20111019 - METHOD OF MAKING A RING
Title (en)
METHOD OF MAKING A RING
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES RINGS
Title (fr)
PROCÉDÉ DE FABRICATION D'UN ANNEAU
Publication
Application
Priority
- US 2009003059 W 20090515
- US 15701308 A 20080606
Abstract (en)
[origin: US2009301162A1] A method of making a ring comprising cutting a raw material stock to a predetermined length, cutting a slit through the raw material stock along its length to form a blank, inserting the blank into a tool, expanding the middle of the slit while simultaneously applying a compressive force to the ends of the blank, and expanding the middle of the slit until the blank is round.
IPC 8 full level
B21K 1/76 (2006.01); B21D 53/16 (2006.01)
CPC (source: EP KR US)
B21D 53/16 (2013.01 - EP KR US); B21J 5/022 (2013.01 - KR); B21K 1/761 (2013.01 - EP KR US)
Designated contracting state (EPC)
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 SE SI SK TR
DOCDB simple family (publication)
WO 2009148496 A1 20091210; AT E529205 T1 20111115; BR PI0913120 A2 20160105; CA 2725746 A1 20091210; CA 2725746 C 20130702; CN 102056688 A 20110511; CN 102056688 B 20130327; EP 2307156 A1 20110413; EP 2307156 B1 20111019; JP 2011521791 A 20110728; JP 5501348 B2 20140521; KR 101216239 B1 20121228; KR 20110005310 A 20110117; RU 2010154100 A 20120720; RU 2468884 C2 20121210; US 2009301162 A1 20091210
DOCDB simple family (application)
US 2009003059 W 20090515; AT 09758660 T 20090515; BR PI0913120 A 20090515; CA 2725746 A 20090515; CN 200980120683 A 20090515; EP 09758660 A 20090515; JP 2011512448 A 20090515; KR 20107027607 A 20090515; RU 2010154100 A 20090515; US 15701308 A 20080606