Invention Grant
- Patent Title: Balance spring made of heavily doped silicon for a timepiece
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Application No.: US15295449Application Date: 2016-10-17
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Publication No.: US10539926B2Publication Date: 2020-01-21
- Inventor: Richard Bossart , Olivier Hunziker
- Applicant: ROLEX SA
- Applicant Address: CH Geneva
- Assignee: ROLEX SA
- Current Assignee: ROLEX SA
- Current Assignee Address: CH Geneva
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: EP15190441 20151019
- Main IPC: G04B17/22
- IPC: G04B17/22 ; G04B17/06
Abstract:
A balance spring for an oscillator of a timepiece, wherein it comprises a component part, in particular at least a coil or a portion of a coil, provided with heavily doped silicon having an ion density greater than or equal to 1018 at/cm3, in order to permit the thermo-compensation of the oscillator.
Public/Granted literature
- US20170108831A1 BALANCE SPRING MADE OF HEAVILY DOPED SILICON FOR A TIMEPIECE Public/Granted day:2017-04-20
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