EP 2881807 B1 20191127 - Acoustic dispersion membrane for a musical watch
Title (en)
Acoustic dispersion membrane for a musical watch
Title (de)
Schallabstrahlungsmembran für eine Armbanduhr mit Spieluhr
Title (fr)
Membrane de rayonnement acoustique pour une montre musicale
Publication
Application
Priority
EP 13196238 A 20131209
Abstract (en)
[origin: CN104698808A] The acoustic radiating membrane (1) is provided to equip a musical watch or a striking watch. The dome-shaped membrane comprises an active central portion, a lateral wall (3) and a peripheral edge portion (4) for holding the membrane in a watch case. The central portion includes a central base connected by connecting elements (5) to a peripheral ring (2'), the central base (2), the connecting elements and the peripheral ring being of dimensions determined to amplify a first vibration mode of one or more notes in a frequency range from 500 Hz to 3.5 kHz.
IPC 8 full level
G10K 1/07 (2006.01); G04B 21/08 (2006.01); G04B 23/02 (2006.01); G04B 37/00 (2006.01)
CPC (source: EP US)
G04B 21/08 (2013.01 - EP US); G04B 23/028 (2013.01 - EP US); G04B 37/0075 (2013.01 - EP US); G10K 1/07 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2881807 A1 20150610; EP 2881807 B1 20191127; CN 104698808 A 20150610; CN 104698808 B 20170901; HK 1211091 A1 20160513; JP 2015114322 A 20150622; JP 6067662 B2 20170125; US 2015160618 A1 20150611; US 9207645 B2 20151208
DOCDB simple family (application)
EP 13196238 A 20131209; CN 201410748666 A 20141209; HK 15111849 A 20151202; JP 2014245572 A 20141204; US 201414556370 A 20141201