EP 2213106 A1 20100804 - FLAT DIAPHRAGM LOUDSPEAKER
Title (en)
FLAT DIAPHRAGM LOUDSPEAKER
Title (de)
FLACHMEMBRANLAUTSPRECHER
Title (fr)
HAUT-PARLEUR À MEMBRANE PLATE
Publication
Application
Priority
- EP 2009007635 W 20091021
- EP 08075841 A 20081021
- EP 09752105 A 20091021
Abstract (en)
[origin: EP2180721A1] The system has suspensions (3, 4) for symmetrically suspending a membrane (1) designed as a woofer membrane, where the membrane has a tweeter (5). The membrane has a thickness of more than 10 percentages of a diameter of the membrane, and the tweeter is arranged in an inner side of a magnet system, where 50 percentages of rearward main radiation of sound takes place through the inner side. An area of a corrugation of the membrane is formed through elastic foam material, where the membrane is made from aluminum, aramid fiber or Nomax (RTM: flame resistant meta-aramid material). The magnet system has magnets that are designed as samarium-cobalt magnets, cerium-cobalt magnets, aluminum-nickel-cobalt magnets, ferrite-magnets and neodymium-magnets.
IPC 8 full level
H04R 7/02 (2006.01); H04R 7/20 (2006.01); H04R 9/02 (2006.01)
CPC (source: EP US)
H04R 7/02 (2013.01 - EP US); H04R 7/20 (2013.01 - EP US); H04R 9/025 (2013.01 - EP US); H04R 1/24 (2013.01 - EP US); H04R 7/10 (2013.01 - EP US); H04R 2231/003 (2013.01 - EP US); H04R 2307/204 (2013.01 - EP US); H04R 2307/207 (2013.01 - EP US)
Citation (search report)
See references of WO 2010046132A1
Designated contracting state (EPC)
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 SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2180721 A1 20100428; CN 102187688 A 20110914; EP 2213106 A1 20100804; EP 2213106 B1 20120815; RU 2011106827 A 20120827; RU 2523094 C2 20140720; US 2011299716 A1 20111208; US 8891810 B2 20141118; WO 2010046132 A1 20100429
DOCDB simple family (application)
EP 08075841 A 20081021; CN 200980141770 A 20091021; EP 09752105 A 20091021; EP 2009007635 W 20091021; RU 2011106827 A 20091021; US 200913125140 A 20091021