EP 3769160 A1 20210127 - METHOD FOR MANUFACTURING A SILICON HAIRSPRING
Title (en)
METHOD FOR MANUFACTURING A SILICON HAIRSPRING
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER SILICIUMHAARFEDER
Title (fr)
PROCEDE DE FABRICATION D'UN SPIRAL EN SILICIUM
Publication
Application
Priority
- EP 18163053 A 20180321
- EP 2019057160 W 20190321
Abstract (en)
[origin: WO2019180177A1] The invention relates to a method for manufacturing a hairspring with a final stiffness,comprising the steps of manufacturing a hairspring with an excess thickness, determining the initial stiffness of the hairspring produced, in order to remove the volume of material to obtain the hairspring with the dimensions required for said final stiffness.
IPC 8 full level
G04B 17/06 (2006.01); G04B 17/22 (2006.01)
CPC (source: EP KR US)
G04B 17/066 (2013.01 - EP KR US); G04B 17/227 (2013.01 - EP KR US); G04B 17/26 (2013.01 - KR US); G04B 17/26 (2013.01 - EP)
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3543796 A1 20190925; CN 111819501 A 20201023; EP 3769160 A1 20210127; JP 2021535356 A 20211216; JP 7100711 B2 20220713; KR 102448668 B1 20220928; KR 20200120949 A 20201022; US 11300926 B2 20220412; US 2021080909 A1 20210318; WO 2019180177 A1 20190926
DOCDB simple family (application)
EP 18163053 A 20180321; CN 201980017845 A 20190321; EP 19712197 A 20190321; EP 2019057160 W 20190321; JP 2020549548 A 20190321; KR 20207026526 A 20190321; US 201916982418 A 20190321