Global Patent Index - EP 2673961 A1

EP 2673961 A1 20131218 - MAGNETIC MOTOR DEVICE OF AN ELECTRODYNAMIC TRANSDUCER

Title (en)

MAGNETIC MOTOR DEVICE OF AN ELECTRODYNAMIC TRANSDUCER

Title (de)

MAGNETMOTORVORRICHTUNG EINES ELEKTRODYNAMISCHEN WANDLERS

Title (fr)

DISPOSITIF DE MOTEUR MAGNÉTIQUE DE TRANSDUCTEUR ÉLECTRODYNAMIQUE

Publication

EP 2673961 A1 20131218 (FR)

Application

EP 12707877 A 20120207

Priority

  • FR 1150993 A 20110208
  • FR 2012050262 W 20120207

Abstract (en)

[origin: WO2012107682A1] The invention relates to a magnetic motor device of an electrodynamic transducer, which includes a bonded annular magnet (24) as well as a tubular element (22) which is mounted coaxially relative to said bonded annular magnet, said bonded annular magnet (24) having a magnetic cylindrical surface (36), while said tubular element (22) comprises a winding (32, 34) extending opposite said magnetic cylindrical surface (36), said tubular element (22) being intended for being driven axially relative to said bonded angular magnet (24) when electric power is supplied to said winding. According to the invention, the device also includes a metal tubular member (26) having a metal cylindrical surface (44, 46), and said metal tubular member (26) is mounted coaxially relative to said tubular element (22) such that said metal cylindrical surface (44, 46) extends opposite said magnetic cylindrical surface (36) relative to said winding (32, 34).

IPC 8 full level

H04R 9/02 (2006.01)

CPC (source: EP US)

H02K 1/12 (2013.01 - US); H02K 41/031 (2013.01 - US); H02K 41/0356 (2013.01 - EP US); H04R 9/025 (2013.01 - EP US); H04R 9/022 (2013.01 - EP US); H04R 2209/022 (2013.01 - EP US); H04R 2209/041 (2013.01 - EP US)

Citation (search report)

See references of WO 2012107682A1

Citation (examination)

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)

FR 2971385 A1 20120810; FR 2971385 B1 20140214; CN 103348701 A 20131009; EP 2673961 A1 20131218; US 2014339924 A1 20141120; US 2017179807 A1 20170622; WO 2012107682 A1 20120816

DOCDB simple family (application)

FR 1150993 A 20110208; CN 201280008104 A 20120207; EP 12707877 A 20120207; FR 2012050262 W 20120207; US 201414217766 A 20140318; US 201615394166 A 20161229