EP 3722888 A1 20201014 - MECHANICAL OSCILLATOR WITH TUNABLE ISOCHRONISM DEFECT
Title (en)
MECHANICAL OSCILLATOR WITH TUNABLE ISOCHRONISM DEFECT
Title (de)
MECHANISCHER OSZILLATOR MIT ABSTIMMBAREM ISOCHRONISMUSMANGEL
Title (fr)
OSCILLATEUR MÉCANIQUE AVEC DÉFAUT D'ISOCHRONISME RÉGLABLE
Publication
Application
Priority
EP 19168095 A 20190409
Abstract (en)
Mechanical oscillator (1) for a timepiece comprising an inertial mass (3) arranged to oscillate about a neutral position under the effect of a restoring force provided by at least one elastic element (5),characterised in that said mechanical oscillator (1) further comprises a compensation spring (11) pivotably linked to said inertial mass (3) by means of a substantially rigid first connecting bar (15), said compensation spring (11) and said first connecting bar (15) being arranged so as to apply a compensating force to said inertial mass (3) which varies in function of displacement of said inertial mass (3) from its neutral position.This arrangement permits tuning of the isochronism and thus reduction and/or elimination of the isochronism defect of the oscillator typically caused by nonliearity of the restoring force provided by the elastic element (55)
IPC 8 full level
G04B 17/04 (2006.01); G04B 17/26 (2006.01)
CPC (source: EP)
G04B 17/045 (2013.01); G04B 17/26 (2013.01)
Citation (applicant)
- EP 1736838 A1 20061227 - SUISSE ELECTRONIQUE MICROTECH [CH]
- WO 2018100122 A1 20180607 - LVMH SWISS MFT SA [CH]
- US 2017269551 A1 20170921 - SEMON GUY [CH], et al
- EP 2735919 A1 20140528 - MONTRES BREGUET SA [CH]
- CH 296060 A 19540131 - MARTI FRITZ [CH], et al
- EP 2290476 A1 20110302 - SUISSE ELECTRONIQUE MICROTECH [CH]
- FR 1044957 A 19531123
- SIMON HENEIN; LENNART RUBBERT; FLORENT COSANDIER; MURIELLE RICHARD: "The Art of Flexure Mechanism Design", 2017, EPFL PRESS
- ZANATY, MOHAMED; ILAN VARDI; SIMON HENEIN: "Programmable multistable mechanisms: Synthesis and modelling", JOURNAL OF MECHANICAL DESIGN, vol. 140.4, 2018, pages 042301
Citation (search report)
- [XA] WO 2017157870 A1 20170921 - LVMH SWISS MFT SA [CH]
- [A] FR 3048790 A1 20170915 - LVMH SWISS MFT 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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 19168095 A 20190409