Title:
MECHANICAL OSCILLATOR FOR CLOCK MOVEMENT AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2015/039881
Kind Code:
A3
Abstract:
A balance spring (42) intended for being connected to a balance (40) of a clock movement having a low thermal expansion coefficient, the balance spring (42) being made of a first composite material including first long fibres, comprising a majority of silica, embedded in a matrix made of a thermosetting polymer, wherein the composite material also includes second long fibres selected from the group comprising carbon fibres and aramid fibres, the second long fibres also being embedded in the matrix. A method for manufacturing such a balance spring (42), with optional steps for manufacturing a balance (40) that is integral with the balance spring (42), is also described.
Inventors:
PERREUX DOMINIQUE (FR)
LALLEMENT GÉRARD (FR)
LALLEMENT GÉRARD (FR)
Application Number:
PCT/EP2014/068864
Publication Date:
February 25, 2016
Filing Date:
September 04, 2014
Export Citation:
Assignee:
MAHYTEC (FR)
International Classes:
G04B17/06; F16F1/366; G04B17/22
Domestic Patent References:
| WO2004008259A1 | 2004-01-22 | |||
| WO2006123095A2 | 2006-11-23 |
Foreign References:
| GB2407402A | 2005-04-27 | |||
| FR2842313A1 | 2004-01-16 | |||
| GB2416408A | 2006-01-25 | |||
| EP2602671A1 | 2013-06-12 |
Attorney, Agent or Firm:
RICHARD, François-Régis (e-Patent S.A.Saint-Honor, 1 Neuchâtel, CH)
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