Mechanisms For Stabilizing Frequency (magnetic Subclass 497; In Striking Mechanisms Subclass 224; Stopping And Regulating Of The Running Subclass 234; Electrical And Thermoelectric Regulating Mechanisms Subclass 496) [g04b 17/00] Patents (Class 968/103)

  • Patent number: 7889028
    Abstract: The coupled resonator comprises a first low frequency resonator, such as a balance spring (1) and a second higher frequency resonator, such as a tuning fork (2), the two resonators (1 and 2) including permanent mechanical coupling means. Application to the regulating system of a timepiece.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: February 15, 2011
    Assignee: The Swatch Group Research and Development Ltd
    Inventors: Thierry Hessler, Kaspar Trümpy