Global Patent Index - EP 1969899 A1

EP 1969899 A1 20080917 - INERTIAL VOICE TYPE COIL ACTUATOR

Title (en)

INERTIAL VOICE TYPE COIL ACTUATOR

Title (de)

TR√ĄGHEITSSTELLGLIED DES SCHWINGSPULENTYPS

Title (fr)

ACTIONNEUR DE BOBINE DE TYPE ACOUSTIQUE INERTIEL

Publication

EP 1969899 A1 20080917 (EN)

Application

EP 05853729 A 20051212

Priority

US 2005044881 W 20051212

Abstract (en)

[origin: WO2007070025A1] The present invention provides an intertial-type voice coil actuator (90) that includes a magnetic flux conductive material core (101) with a continuous channel (103). The channel (103) has antifringing groove. The actuator employs a radially polarized cylindrical magnet (105) spaced in the channel (103) to form a magnetic gap (124) and a conductive coil (106) positioned at least partially in the gap. A multi-component suspension system (92) provides high quality sound using an antifriction bearing (104), a viscous magnetic fluid, and a spider suspension (111). The inertial-type actuator is completed by an integrated mounting apparatus (94). In one embodiment, a receiver (114) and an output disk (112) are interlocked by helical wedges and the actuator is mounted on a sound board. The invention is further modified by the employ of high frequency speaker elements.

IPC 8 full level

H04R 25/00 (2006.01); H04R 1/26 (2006.01); H04R 9/06 (2006.01)

CPC (source: EP)

H04R 1/26 (2013.01); H04R 9/06 (2013.01); H04R 9/066 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2007070025 A1 20070621; AU 2005339167 A1 20070621; CA 2637692 A1 20070621; EP 1969899 A1 20080917; EP 1969899 A4 20100303

DOCDB simple family (application)

US 2005044881 W 20051212; AU 2005339167 A 20051212; CA 2637692 A 20051212; EP 05853729 A 20051212