Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
A determination method of the non-balance characteristic of a vibration body
Document Type and Number:
Japanese Patent JP6254584
Kind Code:
B2
Abstract:
A method for determining an imbalance characteristic of a hairspring (5) balance (4) oscillator (3) of a timepiece movement (2), the method comprising at least the following steps: —Setting the hairspring balance oscillator in an oscillating motion at at least two amplitudes, —Determining, for each amplitude and for at least two positions of the oscillator, a piece of data representative of the oscillation period of the oscillator, —Using the data from the previous step to calculate the imbalance characteristic of the hairspring balance oscillator.

Inventors:
Bossart, richard
Sertti, Mark
Burger, frederik
Handicraft, Olivier
Favez, Dennis
Application Number:
JP2015519060A
Publication Date:
December 27, 2017
Filing Date:
June 25, 2013
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ROLEX SA
International Classes:
G04D7/08; G04B17/06; G04B18/02; G04D7/10
Domestic Patent References:
JP49010069B1
Foreign References:
WO2001048564A1
FR1285877A1
Attorney, Agent or Firm:
Patent Business Corporation Daiichi International Patent Office