EP 0927987 B1 20040204 - Sound transducer system
Title (en)
Sound transducer system
Title (de)
Schallwandlersystem
Title (fr)
Dispositif transducteur sonore
Publication
Application
Priority
DE 19758243 A 19971230
Abstract (en)
[origin: EP0927987A2] At one end the housing (11) tubular section (12) is closed by a base (13) and at the opposite open end evolves into a widened section (14) which has the shape of a flat shell with an edge (15). In an opening in the base is a cable passage (16). The complete housing is rotation-symmetrical to its axis (A-A), so that the edge (15) of the widened section (14) is circular round. In the tubular section is an electro-mechanical converter (20) of the piezo-electrical type. In the widened flat section (14) is a thin circular-round bending vibration plate (30) which via a rod (31) is mechanically connected to the electro-mechanical converter. The front side (30a) of the bending vibration plate is in contact with the air in which the wound waves are radiated or from which they are received and is completely smooth and even.
IPC 1-7
IPC 8 full level
H04R 9/00 (2006.01); G10K 9/13 (2006.01); G10K 11/35 (2006.01); G10K 13/00 (2006.01); H04R 7/04 (2006.01)
CPC (source: EP US)
G10K 9/13 (2013.01 - EP US); G10K 11/35 (2013.01 - EP US); G10K 13/00 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0927987 A2 19990707; EP 0927987 A3 20011004; EP 0927987 B1 20040204; CA 2257584 A1 19990630; CA 2257584 C 20010724; DE 19758243 A1 19990715; DE 59810709 D1 20040311; JP 3062170 B2 20000710; JP H11262087 A 19990924; US 6081064 A 20000627
DOCDB simple family (application)
EP 98124257 A 19981218; CA 2257584 A 19981229; DE 19758243 A 19971230; DE 59810709 T 19981218; JP 37441098 A 19981228; US 21703398 A 19981221