EP 2657794 B1 20170201 - Barrel spring and arbour
Title (en)
Barrel spring and arbour
Title (de)
Federwelle und Zugfeder
Title (fr)
Arbre et ressort de barillet
Publication
Application
Priority
EP 12165537 A 20120425
Abstract (en)
[origin: EP2657794A1] The method involves machining or turning a complete external contour of a barrel arbor (1) in a touching-up operation of a drawn bar (50) about a touching-up axis (DC) parallel to or merged with a drawing direction. A groove (33) is machined in the touching-up operation, where width of the groove is adjusted along direction of the touching-up axis to hold an inner coil of a mainspring in the direction of the touching-up axis on a point on revolution of the groove and the groove is tangent to a profile in shape of a snail in a zone relative to the axis of revolution of the groove. The touching-up operation is a bar turning operation.
IPC 8 full level
CPC (source: EP RU US)
G04B 1/16 (2013.01 - EP US); G04B 1/18 (2013.01 - EP US); G04B 1/16 (2013.01 - RU); G04B 1/18 (2013.01 - RU); Y10T 29/49581 (2015.01 - EP US)
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2657794 A1 20131030; EP 2657794 B1 20170201; CN 103376727 A 20131030; CN 103376727 B 20160210; EP 2674817 A2 20131218; EP 2674817 A3 20170517; EP 2674817 B1 20200527; HK 1190805 A1 20140711; JP 2013228393 A 20131107; JP 5749760 B2 20150715; RU 2013119128 A 20141027; RU 2609397 C2 20170201; US 2013283615 A1 20131031; US 9317013 B2 20160419
DOCDB simple family (application)
EP 12165537 A 20120425; CN 201310148320 A 20130425; EP 13163792 A 20130415; HK 14103820 A 20140422; JP 2013092016 A 20130425; RU 2013119128 A 20130424; US 201313869480 A 20130424