US 11,774,910 B2
Resonant member for a striking mechanism of a watch or of a music box
Laurane Chevallier, Les Rousses (FR); and Julien Peter, Gollion (CH)
Assigned to Blancpain SA, Le Brassus (CH)
Filed by Blancpain SA, Le Brassus (CH)
Filed on Nov. 4, 2019, as Appl. No. 16/672,578.
Claims priority of application No. 18207831 (EP), filed on Nov. 22, 2018.
Prior Publication US 2020/0166892 A1, May 28, 2020
Int. Cl. G04B 21/08 (2006.01); G04B 21/06 (2006.01)
CPC G04B 21/08 (2013.01) [G04B 21/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A resonant member suitable for a striking mechanism of a watch or of a music box, the resonant member comprising:
a resonant part configured to vibrate and resonate once activated; and
an attachment part integral with the resonant part in one-piece form,
wherein the resonant part comprises a palladium or platinum alloy with more than 51 wt. % palladium or platinum in the alloy,
wherein the resonant part comprises a first gong,
wherein the resonant part has a Young's modulus in a range of from 80 to 180 GPa
wherein the first gong is of circular shape and configured to be disposed inside a watch case describing a circular sector with an angle in a range of from 150 to 250°,
wherein the resonant part has a hardness greater than 150 HV,
wherein the first gong is connected on a first end to the attachment part and a second end is free to move,
wherein the first gong has a deflection distance that is less than 20% of its cross-section, and
wherein the first gong is configured, once activated, to provide a sound in an audible range of from 1 to 10 KHz.