EP 3953215 A1 20220216 - UNIT COMPRISING A CASING AND SUBWOOFER DUCT WITH VARIABLE GEOMETRY
Title (en)
UNIT COMPRISING A CASING AND SUBWOOFER DUCT WITH VARIABLE GEOMETRY
Title (de)
EINHEIT MIT EINEM GEHÄUSE UND EINEM SUBWOOFERKANAL MIT VARIABLER GEOMETRIE
Title (fr)
ENSEMBLE COMPRENANT UN CAISSON ET UN CONDUIT DE CAISSON DE BASSE À GÉOMÉTRIE ÉVOLUTIVE
Publication
Application
Priority
- FR 1903792 A 20190409
- EP 2020056613 W 20200312
Abstract (en)
[origin: WO2020207693A1] The invention relates to a unit (1) comprising: - a casing (2) forming an internal space, a first surface of the casing (2) comprising an opening (3), and a second surface of the casing (2) comprising a port (4), and - a duct (5) for a subwoofer comprising a main portion defined by first and second open ends, the first end being connected to the casing (2), the opening of which corresponds to said port (4), thus forming an input, the second end being configured to lead to the outside, thus forming an output (6), said unit (1) being characterised in that the main portion of the duct (5) has a cross-sectional area the geometry of which varies between the two ends thereof, the first end of the duct having a different geometric shape from the second.
IPC 8 full level
B60R 11/02 (2006.01); H04R 1/28 (2006.01)
CPC (source: EP)
B60R 11/0217 (2013.01); H04R 1/021 (2013.01); H04R 1/2826 (2013.01); B60R 2011/0036 (2013.01); H04R 1/2888 (2013.01); H04R 1/2896 (2013.01); H04R 2499/13 (2013.01)
Citation (search report)
See references of WO 2020207693A1
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)
WO 2020207693 A1 20201015; EP 3953215 A1 20220216; FR 3094930 A1 20201016; FR 3094930 B1 20210312
DOCDB simple family (application)
EP 2020056613 W 20200312; EP 20708510 A 20200312; FR 1903792 A 20190409