EP 4009114 A1 20220608 - HAIRSPRING FOR CLOCK MOVEMENT AND METHOD FOR MANUFACTURING SAME
Title (en)
HAIRSPRING FOR CLOCK MOVEMENT AND METHOD FOR MANUFACTURING SAME
Title (de)
SPIRALFEDER FÜR UHRWERK UND IHR HERSTELLUNGSVERFAHREN
Title (fr)
RESSORT SPIRAL POUR MOUVEMENT D'HORLOGERIE ET SON PROCEDE DE FABRICATION
Publication
Application
Priority
- EP 21218349 A 20191231
- EP 19220163 A 20191231
Abstract (en)
[origin: US2021200153A1] A balance-spring intended to equip a balance of an horological movement, comprising a core made of Nb—Ti made from an alloy consisting of: niobium: balance to 100% by weight, titanium: between 5 and 95% by weight, traces of elements chosen from the group consisting of O, H, C, Fe, Ta, N, Ni, Si, Cu, Al, each of said elements being present in a quantity between 0 and 1600 ppm by weight, the total quantity formed by all of said elements being between 0% and 0.3% by weight, wherein the core made of Nb—Ti is coated with a layer of niobium, said layer of niobium having a thickness between 20 nm and 10 μm.
Abstract (fr)
La présente invention concerne notamment un ressort spiral destiné à équiper un balancier d'un mouvement d'horlogerie, comprenant une âme en Nb-Ti réalisée dans un alliage constitué de :- niobium : balance à 100% en poids,- titane : entre 5 et 95% en poids,- traces d'éléments sélectionnés parmi le groupe constitué de O, H, C, Fe, Ta, N, Ni, Si, Cu, Al, chacun desdits éléments étant présent dans une quantité comprise entre 0 et 1600 ppm en poids, la quantité totale constituée par l'ensemble desdits éléments étant comprise entre 0% et 0.3% en poids,dans lequel l'âme en Nb-Ti est enrobée d'une couche de niobium, ladite couche de niobium ayant une épaisseur comprise entre 20 nm et 10 µm.
IPC 8 full level
G04B 17/06 (2006.01); G04B 17/22 (2006.01)
CPC (source: CN EP KR RU US)
B21F 3/02 (2013.01 - KR); C22C 14/00 (2013.01 - CN KR); C22C 27/02 (2013.01 - CN KR); C22F 1/02 (2013.01 - CN); C22F 1/16 (2013.01 - KR); C22F 1/18 (2013.01 - CN); C22F 1/183 (2013.01 - CN); G04B 17/06 (2013.01 - CN US); G04B 17/063 (2013.01 - CN US); G04B 17/066 (2013.01 - EP KR US); G04B 17/227 (2013.01 - EP KR US); G04B 17/34 (2013.01 - CN); G04B 45/00 (2013.01 - RU); G04D 3/0041 (2013.01 - US); G04D 3/0069 (2013.01 - US)
Citation (search report)
- [A] EP 3502288 A1 20190626 - NIVAROX SA [CH]
- [A] WO 2018172164 A1 20180927 - UNIV DE LORRAINE [FR]
- [A] EP 1039352 A1 20000927 - ROLEX MONTRES [CH]
- [A] TW I615690 B 20180221 - NIVAROX SA [CH]
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 3845971 A1 20210707; EP 3845971 B1 20240417; CN 113126466 A 20210716; CN 113126466 B 20230124; EP 4009114 A1 20220608; JP 2021110726 A 20210802; JP 7051979 B2 20220411; KR 102431406 B1 20220810; KR 102502785 B1 20230223; KR 20210086949 A 20210709; KR 20220088652 A 20220628; RU 2756785 C1 20211005; US 2021200153 A1 20210701
DOCDB simple family (application)
EP 19220163 A 20191231; CN 202011629549 A 20201231; EP 21218349 A 20191231; JP 2020183437 A 20201102; KR 20200147991 A 20201106; KR 20220072366 A 20220614; RU 2020142723 A 20201223; US 202017084210 A 20201029