EP 1040727 A2 20001004 - MOVING-COIL LOUDSPEAKER
Title (en)
MOVING-COIL LOUDSPEAKER
Title (de)
LAUTSPRECHER MIT BEWEGLICHER SPULE
Title (fr)
HAUT-PARLEUR A BOBINE MOBILE
Publication
Application
Priority
- IT 9800310 W 19981106
- IT BO970658 A 19971106
Abstract (en)
[origin: WO9925149A2] A loudspeaker (1) having a substantially cup-shaped frame (2); a magnetic body (3) extending inside the frame (2) and coaxial with a longitudinal axis (A) of the frame (2); a substantially truncated-cone-shaped diaphragm (4) fitted in axially-sliding manner to the magnetic body (3); and an actuating coil (8) fitted in axially-sliding manner to the magnetic body (3) and integral with the diaphragm (4); the loudspeaker (1) also having a first annular centering and damping membrane (14) connecting the magnetic body (3) to the diaphragm (4); and a second annular centering and damping membrane (17) connecting the coil (8) to the lateral wall (18) of the frame (2).
IPC 1-7
IPC 8 full level
H04R 7/16 (2006.01); H04R 7/18 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01)
CPC (source: EP KR)
H04R 7/16 (2013.01 - EP); H04R 9/025 (2013.01 - EP); H04R 9/041 (2013.01 - EP); H04R 9/06 (2013.01 - KR)
Citation (third parties)
Third party :
- US 4239943 A 19801216 - CZERWINSKI EUGENE J [US]
- US 4737992 A 19880412 - LATHAM-BROWN ERNEST [US], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI NL PT SE
DOCDB simple family (publication)
WO 9925149 A2 19990520; WO 9925149 A3 19990722; AT E226384 T1 20021115; AU 1257999 A 19990531; CA 2309209 A1 19990520; CN 1282502 A 20010131; DE 69808799 D1 20021121; DE 69808799 T2 20030703; EP 1040727 A2 20001004; EP 1040727 B1 20021016; ES 2186239 T3 20030501; IT 1296539 B1 19990709; IT BO970658 A0 19971106; IT BO970658 A1 19990506; JP 2001523079 A 20011120; KR 20010031843 A 20010416
DOCDB simple family (application)
IT 9800310 W 19981106; AT 98955893 T 19981106; AU 1257999 A 19981106; CA 2309209 A 19981106; CN 98812341 A 19981106; DE 69808799 T 19981106; EP 98955893 A 19981106; ES 98955893 T 19981106; IT BO970658 A 19971106; JP 2000520615 A 19981106; KR 20007004916 A 20000504