Global Patent Index - EP 3053357 B1

EP 3053357 B1 20190410 - ELECTROACOUSTIC CONVERSION DEVICE HAVING AT LEAST TWO LOUDSPEAKERS

Title (en)

ELECTROACOUSTIC CONVERSION DEVICE HAVING AT LEAST TWO LOUDSPEAKERS

Title (de)

VORRICHTUNG FÜR ELEKTROAKUSTISCHE UMWANDLUNG MIT MINDESTENS ZWEI LAUTSPRECHERN

Title (fr)

DISPOSITIF DE CONVERSION ÉLECTROACOUSTIQUE AYANT AU MOINS DEUX HAUT-PARLEURS

Publication

EP 3053357 B1 20190410 (FR)

Application

EP 14780818 A 20140930

Priority

  • FR 1359670 A 20131004
  • EP 2014070868 W 20140930

Abstract (en)

[origin: WO2015049218A1] The invention relates to an electroacoustic conversion device (1) including: - a first electrodynamic loudspeaker (5A) comprising a first diaphragm (13A) and a first electrical wire coil (15A); - a magnetic circuit (9) including at least one permanent magnet (27) and defining a first pole gap (23A) suitable for receiving the first coil, the magnetic circuit being suitable for channeling closed magnetic field lines (29) passing through the first pole gap; and - at least one second electrodynamic loudspeaker (5B) comprising a second diaphragm (13B) and a second electrical wire coil (15B) that are different from the first diaphragm (13B) and first coil (15B). The same magnetic circuit (9) defines a second pole gap (23B) in addition to the first pole gap. The second pole gap is suitable for receiving the second coil and is arranged such that said magnetic field lines pass through the second pole gap.

IPC 8 full level

H04R 9/06 (2006.01)

CPC (source: EP)

H04R 9/063 (2013.01); H04R 9/025 (2013.01); H04R 2209/026 (2013.01)

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)

WO 2015049218 A1 20150409; EP 3053357 A1 20160810; EP 3053357 B1 20190410; FR 3011708 A1 20150410; FR 3011708 B1 20170210

DOCDB simple family (application)

EP 2014070868 W 20140930; EP 14780818 A 20140930; FR 1359670 A 20131004