EP 0899635 B1 20030502 - Device for immersion in water and comprising a sound transducer
Title (en)
Device for immersion in water and comprising a sound transducer
Title (de)
Vorrichtung zur Verwendung unter Wasser und mit einem Schallwandler
Title (fr)
Appareil susceptible d'être immergé et comprenant un transducteur sonore
Publication
Application
Priority
EP 97114986 A 19970829
Abstract (en)
[origin: EP0899635A1] A submersible article typically a wristwatch (1) has slow gas pressure equalisation (26), and an acoustic transducer, preferably a loudspeaker (22) consisting of a metal plate between two piezoelectric discs, attached solidly to a deformable watertight membrane (17). The membrane is held against a supporting surface (12) by a ring (20) with sprung feet and restrained from excess movement by a perforated grill (23).
IPC 1-7
IPC 8 full level
G04B 37/00 (2006.01); G04B 37/11 (2006.01)
CPC (source: EP)
G04B 37/0075 (2013.01); G04B 37/11 (2013.01)
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0899635 A1 19990303; EP 0899635 B1 20030502; DE 69721524 D1 20030605; DE 69721524 T2 20040408
DOCDB simple family (application)
EP 97114986 A 19970829; DE 69721524 T 19970829