EP 3772225 A1 20210203 - LOUDSPEAKER WITH LOW INERTIA
Title (en)
LOUDSPEAKER WITH LOW INERTIA
Title (de)
LAUTSPRECHER MIT GERINGER TRÄGHEIT
Title (fr)
HAUT-PARLEUR À FAIBLE INERTIE
Publication
Application
Priority
FR 1908614 A 20190729
Abstract (en)
[origin: CN112312293A] A loudspeaker (10) with low inertia is provided, including a supporting structure (12), a diffusion membrane (14) that is movable relative to the supporting structure (12), a motor (16) for actuatingthe diffusion membrane (14), including a movable unit (18) relative to the supporting structure (12), the movable unit (18) being mechanically connected to the diffusion membrane (14) for synchronizedmovement thereof, and a hydraulic circuit (20, 22) interposed between the movable unit (18) and the diffusion membrane (14), the diffusion membrane (14) and the movable unit (18) each including a movable piston surface, interacting with a fluid (22) of the hydraulic circuit (20, 22).
Abstract (fr)
La présente invention concerne (10) comportant une structure porteuse (12), une membrane de diffusion (14) mobile par rapport à la structure porteuse (12) et un moteur (16) d'actionnement de la membrane de diffusion (14) comportant un équipage mobile (18) déplaçable par rapport à la structure porteuse (12), l'équipage mobile (18) étant relié mécaniquement à la membrane de diffusion (14) pour leur déplacement synchronisé.Il comporte un circuit hydraulique (20, 22) interposé entre l'équipage mobile (18) et la membrane (14), la membrane (14) et l'équipage mobile (18) comportant chacun une surface de piston mobile, en interaction avec un fluide (22) du circuit hydraulique (20, 22).
IPC 8 full level
H04R 9/02 (2006.01); H04R 9/04 (2006.01); H04R 11/02 (2006.01); H04R 23/02 (2006.01)
CPC (source: CN EP US)
H04R 1/02 (2013.01 - CN); H04R 1/2834 (2013.01 - US); H04R 7/04 (2013.01 - CN); H04R 9/025 (2013.01 - CN); H04R 9/027 (2013.01 - EP); H04R 9/06 (2013.01 - CN); H04R 9/066 (2013.01 - US); H04R 9/045 (2013.01 - EP); H04R 11/02 (2013.01 - EP); H04R 23/02 (2013.01 - EP); H04R 2209/026 (2013.01 - EP); H04R 2400/07 (2013.01 - EP); H04R 2400/11 (2013.01 - CN EP)
Citation (applicant)
US 4547663 A 19851015 - KITAGISHI NOZOMU [JP], et al
Citation (search report)
- [XAI] WO 9613960 A1 19960509 - KRISTOFFERSEN DAN [DK]
- [A] EP 1274275 A1 20030108 - MATSUSHITA ELECTRIC IND CO LTD [JP]
- [A] "FLUID HAS WORLD'S HIGHEST MAGNETIC FLUX DENSITY", JEE JOURNAL OF ELECTRONIC ENGINEERING, DEMPA PUBLICATIONS INC. TOKYO, JP, vol. 27, no. 280, 1 April 1990 (1990-04-01), pages 64 - 66, XP000128629, ISSN: 0385-4507
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3772225 A1 20210203; CN 112312293 A 20210202; FR 3099677 A1 20210205; FR 3099677 B1 20210709; US 11272285 B2 20220308; US 2021037314 A1 20210204
DOCDB simple family (application)
EP 20188171 A 20200728; CN 202010738812 A 20200728; FR 1908614 A 20190729; US 202016937069 A 20200723