EP 2373445 B1 20121219 - METHOD AND EQUIPMENT FOR MAKING A SPRING
Title (en)
METHOD AND EQUIPMENT FOR MAKING A SPRING
Title (de)
VERFAHREN UND EINRICHTUNG ZUR HERSTELLUNG EINER FEDER
Title (fr)
PROCÉDÉ ET INSTALLATION DE FABRICATION D'UN RESSORT
Publication
Application
Priority
- FR 2009052054 W 20091026
- FR 0806192 A 20081105
Abstract (en)
[origin: WO2010052407A1] The invention relates to a method for making a variable pitch spring (9), in which a spring wire (1) is bent using bending lugs (5, 6) so as to impart a spiral configuration thereto, a gap is formed between the turns by placing, between the turns being formed, the bevelled side of a rotary disc (2) having a rotation synchronised with the spring wire supply, the disc (2) having a bevelled profile that varies along the periphery of the disc, and the spring wire is cut (3) at the end of the formation of each spring.
IPC 8 full level
CPC (source: EP KR US)
B21F 3/02 (2013.01 - EP KR US); B21F 3/06 (2013.01 - EP KR US); B21F 35/00 (2013.01 - KR)
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 SM TR
DOCDB simple family (publication)
FR 2937890 A1 20100507; FR 2937890 B1 20101224; CA 2742491 A1 20100514; CA 2742491 C 20160920; CN 102256721 A 20111123; CN 102256721 B 20131030; DK 2373445 T3 20130402; EP 2373445 A1 20111012; EP 2373445 B1 20121219; ES 2401693 T3 20130423; JP 2012507405 A 20120329; JP 5529879 B2 20140625; KR 101594206 B1 20160215; KR 20110084293 A 20110721; PL 2373445 T3 20130628; PT 2373445 E 20130327; TW 201026408 A 20100716; TW I461248 B 20141121; US 2011209514 A1 20110901; US 8978434 B2 20150317; WO 2010052407 A1 20100514
DOCDB simple family (application)
FR 0806192 A 20081105; CA 2742491 A 20091026; CN 200980150454 A 20091026; DK 09760540 T 20091026; EP 09760540 A 20091026; ES 09760540 T 20091026; FR 2009052054 W 20091026; JP 2011533788 A 20091026; KR 20117012881 A 20091026; PL 09760540 T 20091026; PT 09760540 T 20091026; TW 98137651 A 20091105; US 200913127899 A 20091026