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Patent Searching and Data


Title:
STRIKING MECHANISM FOR A WATCH OR A MUSIC BOX WITH A KEYBOARD HAVING OPTIMISED ACTIVATION ENERGY
Document Type and Number:
WIPO Patent Application WO/2015/086317
Kind Code:
A3
Abstract:
The invention relates to a striking mechanism (50) for a watch (100) or a music box (200) comprising a keyboard (1) with optimised activation energy, comprising a plurality of overhanging blades (2). Said blades (2) are each made of a material with Young's modulus E and density ρ complying with the inequality: formula (I). All of said blades (2) each comply with the ratio: formula (II), wherein b is the width, L the length, δ the lift, f the frequency, and U the activation energy, of the blade (2), U being no lower than 20 microwatts, and the blades (2) are arranged to vibrate between 800 Hz and 4000 Hz. The invention further relates to a timepiece (500), watch (100) or music box (200) comprising such a striking mechanism (50).

Inventors:
KARAPATIS, Polychronis Nakis (Rue du Collège 4, Premier, CH-1324, CH)
KADMIRI, Younes (26A Rue Saint Fort, Morre, F-25660, FR)
SARCHI, Davide (Place de la Gare 12, Renens, CH-1020, CH)
Application Number:
EP2014/075613
Publication Date:
June 18, 2015
Filing Date:
November 26, 2014
Export Citation:
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Assignee:
MONTRES BREGUET S.A. (C L'Abbaye, H-1344, CH)
International Classes:
G04B21/08; G04B23/00; G04B23/08; G10F1/06
Foreign References:
EP2482275A12012-08-01
Attorney, Agent or Firm:
ICB INGÉNIEURS CONSEILS EN BREVETS SA (Giraud, EricFbg de l'Hôpital 3, Neuchâtel, CH-2001, CH)
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