Invention Grant
- Patent Title: Method for attachment of a balance spring for a mechanical timepiece movement and balance spring attached by such a method
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Application No.: US15298498Application Date: 2016-10-20
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Publication No.: US10018965B2Publication Date: 2018-07-10
- Inventor: Julien Christan , Thierry Conus
- Applicant: ETA SA Manufacture Horlogere Suisse
- Applicant Address: CH Grenchen
- Assignee: ETA SA Manufacture Horlogère Suisse
- Current Assignee: ETA SA Manufacture Horlogère Suisse
- Current Assignee Address: CH Grenchen
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: EP16157390 20160225
- Main IPC: G04B17/32
- IPC: G04B17/32 ; G04B17/34 ; G04B17/06
Abstract:
Method for attachment of a last outer coil of a timepiece balance spring inside a groove provided in a balance spring stud, wherein the method includes the step of adhesive bonding the last outer coil of the timepiece balance spring by means of a fluid adhesive whose viscosity is comprised between 200 and 400 mPa·s.
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