EP 3418816 B1 20191016 - BALANCE SPRING WITH LOZENGE SECTION FOR A MECHANICAL CLOCKWORK OF A WATCH AND METHOD FOR PRODUCING SAID BALANCE SPRING
Title (en)
BALANCE SPRING WITH LOZENGE SECTION FOR A MECHANICAL CLOCKWORK OF A WATCH AND METHOD FOR PRODUCING SAID BALANCE SPRING
Title (de)
UNRUHFEDER MIT RAUTENFÖRMIGEM QUERSCHNITT FÜR EIN MECHANISCHES UHRWERK EINER KLEINUHR SOWIE VERFAHREN ZUR HERSTELLUNG DER UNRUHFEDER
Title (fr)
BALANCIER SPIRAL COMPRENANT UNE SECTION TRANSVERSALE EN FORME DE LOSANGE POUR UN MÉCANISME D'HORLOGERIE D'UN MOUVEMENT DE MONTRE ET PROCÉDÉ DE FABRICATION DU BALANCIER SPIRAL
Publication
Application
Priority
EP 17176933 A 20170620
Abstract (en)
[origin: WO2018234290A1] The invention relates to a balance spring for a mechanical movement of a watch. The balance spring is designed as a spiral spring and has a winding cross-section. According to the invention, the winding cross-section of the winding spring has the shape of a rhomboid, and the rhomboid has four sides, two first corners with a first internal angle, two second corners with a second internal angle, a first diagonal which connects the two first corners together, and a second diagonal which connects the two second corners together. The first diagonal is shorter and the second diagonal, and the first internal angle is greater than the second internal angle.
IPC 8 full level
G04B 17/06 (2006.01); F16F 1/10 (2006.01)
CPC (source: EP KR RU US)
G04B 17/06 (2013.01 - RU); G04B 17/066 (2013.01 - EP KR 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 3418816 A1 20181226; EP 3418816 B1 20191016; CN 110892340 A 20200317; CN 110892340 B 20210824; JP 2020524783 A 20200820; JP 7148207 B2 20221005; KR 102575006 B1 20230906; KR 20200019967 A 20200225; RU 2020101639 A 20210720; RU 2020101639 A3 20211109; RU 2765407 C2 20220128; US 11397409 B2 20220726; US 2020192293 A1 20200618; WO 2018234290 A1 20181227
DOCDB simple family (application)
EP 17176933 A 20170620; CN 201880041465 A 20180619; EP 2018066214 W 20180619; JP 2019569370 A 20180619; KR 20207001518 A 20180619; RU 2020101639 A 20180619; US 201816624795 A 20180619