EP 2881806 B1 20190626 - 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 13196237 A 20131209
Abstract (en)
[origin: CN104698809A] An acoustic radiating membrane (1) is provided to equip a musical watch or a striking watch. The dome-shaped membrane comprises active central portions (2, 2'), a lateral wall (3) and a peripheral edge portion (4) for holding the membrane in a watch case. The central part is configured in a convex shape or a conical shape and with dimensions devised to amplify a first vibration mode of one or more notes within a frequency range of between 500 Hz and 3.5 kHz.
IPC 8 full level
G10K 1/10 (2006.01); G04B 21/08 (2006.01); G04B 23/08 (2006.01); G04B 37/00 (2006.01); G10K 9/20 (2006.01)
CPC (source: EP US)
G04B 21/08 (2013.01 - EP US); G04B 23/08 (2013.01 - EP US); G04B 37/0075 (2013.01 - EP US); G10K 1/10 (2013.01 - EP US); G10K 9/20 (2013.01 - EP US); H04R 7/02 (2013.01 - EP US); H04R 7/127 (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 2881806 A1 20150610; EP 2881806 B1 20190626; CH 708956 A2 20150615; CH 708956 B1 20210831; CN 104698809 A 20150610; CN 104698809 B 20180727; HK 1211090 A1 20160513; JP 2015114320 A 20150622; JP 5981978 B2 20160831; US 2015160617 A1 20150611; US 9658601 B2 20170523
DOCDB simple family (application)
EP 13196237 A 20131209; CH 20332013 A 20131209; CN 201410749017 A 20141209; HK 15111846 A 20151202; JP 2014236219 A 20141121; US 201414527184 A 20141029