EP0924960A2 - Aufhängung für Schallwiedergabeanordnungen nach dem Biegewellenprinzip - Google Patents
Aufhängung für Schallwiedergabeanordnungen nach dem Biegewellenprinzip Download PDFInfo
- Publication number
- EP0924960A2 EP0924960A2 EP98123818A EP98123818A EP0924960A2 EP 0924960 A2 EP0924960 A2 EP 0924960A2 EP 98123818 A EP98123818 A EP 98123818A EP 98123818 A EP98123818 A EP 98123818A EP 0924960 A2 EP0924960 A2 EP 0924960A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- openings
- panel
- cover layers
- core layer
- bracket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 20
- 238000005452 bending Methods 0.000 title claims description 8
- 239000010410 layer Substances 0.000 claims abstract description 51
- 239000012792 core layer Substances 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims description 17
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 230000009471 action Effects 0.000 description 5
- 239000011324 bead Substances 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/207—Shape aspects of the outer suspension of loudspeaker diaphragms
Definitions
- the invention is concerned with mountings for sound reproduction devices according to the principle of flexible shafts, especially those suspensions which allow any integration of such arrangements in installation openings without the To prevent bending wave propagation.
- the panel is built on the sandwich principle, by two each other opposite surfaces of a very light core layer each with a thin cover layer are connected for example by gluing. So that Panel has good sound reproduction properties, the material for the Top layer have a particularly high expansion shaft speed.
- Suitable Cover layer materials are, for example, thin metal foils or fiber-reinforced plastic films.
- the core layer There are also special requirements for the core layer. That's the way it is necessary that the materials that can be used initially have a low mass density and have low damping.
- the materials for the Core layer as high a shear modulus perpendicular to the surfaces have, which are provided with the cover layers. After all, it is in the sense A main requirement is that the core layers can be used Materials in the direction in which they are later made from this material formed core layer has its greatest extent, a very small Possess modulus of elasticity. This in relation to the last two requirements At first glance, contradictory prerequisites are most likely to be caused by a core layer that has a hole structure with between the two for the Coating with the surfaces provided for the top layers Breakthroughs with preferably a small cross section.
- Core layer materials can be used because they are isotropic Material properties still suitable shear and elasticity modules exhibit. It should not go unmentioned in this context that the Use of rigid foams as the material for the core layer Cover layers have the task of the required anisotropic behavior of the To manufacture panels.
- the invention has for its object a suspension for Sound reproduction arrangements according to the bending wave principle indicate which avoids the disadvantages existing in the prior art.
- the inventive step of the present application is to be recognized have that the components used to manufacture the panel for Making an elastic connection with a bracket are suitable.
- the core layer has a hole structure, each Breakthrough of this perforated structure runs perpendicular to the two cover layers, and is to realize a fastening of the panel with the bracket at least one of the openings inserted a fastener, the anyway elastic hole structure of the core material for elastic attachment be used if at least one of the two cover layers to the or with the fastening part provided breakthrough or breakthroughs maintains lateral distance A1 by a plurality of the to or with the Fastening part provided openings immediately adjacent to the side Breakthroughs are not covered by the cover layer or layers. Whether that respective fastening part parallel or transverse to the direction of the Breakthroughs is irrelevant.
- the breakthrough or breakthroughs which are provided with the fastening part, and / or the openings which lateral to the or the openings provided with the fastening part adjacent be foamed with a plastic material.
- At least one of the two cover layers should also be added to the openings foamed with plastic material a distance A2 adhere.
- a further improved spring action is achieved if - as in claim 5 specified - the or the openings which receive a fastening part, and / or breakthroughs that are not or only with one of the two Cover layers are covered, opposite the breakthroughs in the rest Core layer have a reduced length.
- the sound reproduction arrangement is particularly space-saving when the Electronic components for driving the panel at a distance A between Bracket and panel are arranged. Are the electronic components with the Bracket connected, they do not increase the vibrating mass. Besides, will by attaching the electronic components to the bracket for one improved heat dissipation from the electronic components
- the respective panel also by means of a combination of core layer and top layer suspension can be attached, for example, by one of the cover layers for mounting is guided and the panel removed from the edge area with the participation of Core layer is supported.
- the panel 10 shown in top view in FIG. 1 is made up of a core layer 11, an upper cover layer 12.1 and a lower cover layer not visible in FIG. 1 Cover layer 12.2 is formed, the two cover layers 12 each mutually opposite surfaces of the core layer 11 with this are connected.
- the core layer 11 has a hole structure, which in the present case a plurality of openings 20 with a honeycomb shape Cross section is formed.
- the honeycomb openings 20 run vertically to the planes of the two cover layers 12 which have their greatest extent.
- openings 20 shown in the exemplary embodiments are all have a honeycomb-shaped cross section is not limited to this Cross-sectional shape connected. This means that in other embodiments the openings 20 can also have round or angular cross sections.
- the core layer 11 is not complete covered with the two deck views 12. Rather, in the two Cover layers 12 left an area 13 uncovered, through which the Core layer 11 is visible. In the middle (the one visible in Figure 1) Openings 20 is a fastening part in the form of a screw 14 plugged in.
- the head 15 of the screw 14 lies on the core layer 11 If necessary, between the core layer 11 and the head 15 Screw 14 also a washer - for example made of foam (not shown).
- Figure 2 can also be seen that the on the with the shaft 16 of the screw 14 provided opening 20 and the side opposite breakthroughs 20 directly adjacent to this opening 20 the remaining openings 20 of the core layer which have a length of L1 11 have a reduced length L2. This reduced length L2 of the Breakthroughs 20 cause them to be opposite the openings 20 a length L1 more easily transverse to the direction of the shaft 16 of the screw 14 deformed.
- FIGS. 3a-c show one of the suspensions according to FIGS. 1 and 2 shown completely different suspension, although both types of suspension a panel 10 can also be used in combination for suspension.
- the panel 10 is with side Distance A surrounded by a bracket 17.
- This bracket 17 is present formed as a U-profile, the free legs 18 of this profile in the direction of the panel 10 show.
- the legs 18 can also have a toothed contour (not shown).
- the corresponding cover layer 12 is formed on a toothed Leg 18 of the circumferential bracket 17 placed and by means of a complementary toothed tool pressed on the leg 18, a Stress built up in the cover layer 12, which, for example, after Obtain setting of the adhesive between leg 18 and cover layer 12 remains.
- other methods known to the person skilled in the art for Build-up of tension in the cover layer 12 connected to the holder 17 be used.
- reference numeral 19 is one Electronics is designated, which with or the drive systems (not for the panel 10 cooperates. This electronics 19 is with the Bracket 17 connected, whereby good heat dissipation from the panel 10 is achieved becomes.
- the embodiment according to FIG. 4 is linked to the embodiment according to Figures 1 and 2.
- the fastening part in the form of a tab 14 'transverse to Direction of extension of the openings 20 connected to the panel 10.
- the openings 20 'to 20 "' are neither with one upper still with a lower cover layer 12.1, 12.2. to the Mobility of the through holes 20 "and 20" '' transversely to their direction of extension to improve. Addition remains in connection with the embodiment according to FIG. 4, only that the distances A1 and A2 shown are not only transverse apply to the direction of view of this figure but perpendicular to it.
- the tab 14 'at a distance A' between the panel and the Bracket 17 can be made elastic.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Building Environments (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Laminated Bodies (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
- Figur 1
- ein Paneel in Draufsicht;
- Figur 2
- eine Schnittansicht eines Paneels gemäß Figur 1,
- Figur 3a-c
- drei Schnittansichten ein.es weiteren Paneels; und
- Figur 4
- ein weiteres Paneel in Schnittansicht.
Claims (8)
- Aufhängung für Schallwiedergabeanordnungen nach dem Biegewellenprinzip mit einem Paneel 10, welches von einer Kernschicht 11 und zwei Deckschichten 12.1, 12.2 gebildet ist, wobei die beiden Deckschichten 12 mit zwei einander gegenüberliegenden Oberflächen der Kernschicht 11 verbunden sind,
mit einer Halterung 17, und
mit elastischen Befestigungsmitteln, welche das Paneel 10 mit der Halterung 17 verbinden,
dadurch gekennzeichnet;
daß die elastischen Befestigungsmittel von der Kernschicht 11 und/oder wenigstens einer der beiden Deckschichten 12 gebildet werden. - Aufhängung nach Anspruch 1,
dadurch gekennzeichnet,daß die Kernschicht 11 eine Lochstruktur aufweist, wobei jeder Durchbruch 20 dieser Lochstruktur senkrecht zu den beiden Deckschichten 12 verläuft,daß zur Realisierung einer Befestigung des Paneels 10 mit der Halterung 17 durch wenigstens einen der Durchbrüche 20 ein Befestigungsteil 14, 14' gesteckt ist unddaß zumindest eine der beiden Deckschichten 12 zu dem oder den mit dem Befestigungsteil 14 versehenen Durchbruch bzw. Durchbrüchen 20 einen seitlichen Abstand A1 einhält, indem eine Mehrzahl der an den oder die mit dem Befestigungsteil 14 versehenen Durchbrüche 20 seitlich unmittelbar angrenzenden Durchbrüche 20 nicht von der bzw. den Deckschichten 12 bedeckt sind. - Aufhängung nach Anspruch 2
dadurch gekennzeichnet,
daß der oder die Durchbrüche 20, welche mit den Befestigungsteil 14 versehen sind, und/oder die Durchbrüche 20, welche seitlichen an den oder die mit dem Befestigungsteil 14 versehenen Durchbrüche 20 angrenzenden, mit einem Kunststoffmaterial ausgeschäumt sind. - Aufhängung nach Anspruch 3
dadurch gekennzeichnet,
daß zumindest eine der beiden Deckschichten 12 auch zu den mit Kunststoffmaterial aus geschäumten Durchbrüchen 20 einen Abstand A2 einhalten. - Aufhängung nach einem der Ansprüche 2 - 4
dadurch gekennzeichnet,
daß der oder die Durchbrüche 20, welche ein Befestigungsteil 14 aufnehmen, und/oder solche Durchbrüche 20, welche nicht oder nur mit einer der beiden Deckschichten 12 bedeckt sind, gegenüber der Länge L1 der Durchbrüche 20 in der übrigen Kemschicht 11 eine verminderte Länge L2 haben. - Aufhängung nach Anspruch 1
dadurch gekennzeichnet,
daß die Halterung 17 das Paneel 10 mit seitlichem Abstand A umrandet und daß zumindest eine der beiden Deckschichten 12 unter Überbrückung des seitlichen Abstandes A mit der Halterung 17 verbunden ist. - Aufhängung nach Anspruch 6
dadurch gekennzeichnet,
daß die Bereiche der Deckschichten 12, welche den seitlichen Abstand A zur Halterung 17 überbrücken eine gewellte oder gezackte Kontur aufweisen. - Aufhängung nach Anspruch 6 oder Anspruch 7
dadurch gekennzeichnet,
daß im seitlichen Abstand A zwischen dem Paneel 10 und der Halterung 17 Elektonikkomponenten zum 19 Antrieb des Paneel 10 angeordnet und mit der Halterung 17 verbunden sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19757098A DE19757098C2 (de) | 1997-12-20 | 1997-12-20 | Aufhängung für Schallwiedergabeanordnungen nach dem Biegewellenprinzip |
DE19757098 | 1997-12-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0924960A2 true EP0924960A2 (de) | 1999-06-23 |
EP0924960A3 EP0924960A3 (de) | 2005-04-13 |
EP0924960B1 EP0924960B1 (de) | 2009-11-25 |
Family
ID=7852892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98123818A Expired - Lifetime EP0924960B1 (de) | 1997-12-20 | 1998-12-15 | Aufhängung für Schallwiedergabeanordnungen nach dem Biegewellenprinzip |
Country Status (4)
Country | Link |
---|---|
US (1) | US6160898A (de) |
EP (1) | EP0924960B1 (de) |
JP (1) | JPH11252684A (de) |
DE (2) | DE19757098C2 (de) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999052324A1 (en) * | 1998-04-02 | 1999-10-14 | New Transducers Limited | Acoustic device relying on bending wave action |
WO1999060818A1 (de) * | 1998-05-15 | 1999-11-25 | Harman Audio Electronic Systems Gmbh | Plattenlautsprecher |
EP1100287A1 (de) * | 1999-11-10 | 2001-05-16 | M- Tech(HK) Co. Ltd | Lautsprecher |
WO2001047320A1 (en) * | 1999-12-21 | 2001-06-28 | New Transducers Limited | Loudspeakers |
WO2002013575A1 (en) * | 2000-08-03 | 2002-02-14 | New Transducers Limited | Bending wave loudspeaker |
US6546106B2 (en) | 1996-09-03 | 2003-04-08 | New Transducers Limited | Acoustic device |
US6826285B2 (en) | 2000-08-03 | 2004-11-30 | New Transducers Limited | Bending wave loudspeaker |
US6836552B1 (en) | 1998-06-10 | 2004-12-28 | Harman Audio Electronic Systems Gmbh | Panel loudspeakers |
EP1604750A1 (de) * | 2004-06-08 | 2005-12-14 | ACHENBACH BUSCHHÜTTEN GmbH | Einrichtung zur Messung der Zugspannungsverteilung in bandförmigem Walzgut aus Metall |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19757099A1 (de) * | 1997-12-20 | 1999-06-24 | Nokia Deutschland Gmbh | Kontaktierung für eine Schallwiedergabeanordnung nach dem Biegewellenprinzip |
DE19821862A1 (de) | 1998-05-15 | 1999-11-18 | Nokia Deutschland Gmbh | Schallwiedergabeanordnung |
DE19821860A1 (de) | 1998-05-15 | 1999-11-18 | Nokia Deutschland Gmbh | Treiber für flaches Klangpaneel |
DE19843079A1 (de) * | 1998-09-19 | 2000-03-23 | Nokia Deutschland Gmbh | Multiresonanzplatte |
US20040188175A1 (en) * | 1998-11-30 | 2004-09-30 | Sahyoun Joseph Yaacoub | Audio speaker with wobble free voice coil movement |
US7225895B2 (en) * | 1998-11-30 | 2007-06-05 | Joseph Yaacoub Sahyoun | Audio speaker with wobble free voice coil movement |
US6675931B2 (en) | 1998-11-30 | 2004-01-13 | Joseph Yaacoub Sahyoun | Low profile audio speaker |
US7185735B2 (en) * | 1998-11-30 | 2007-03-06 | Joseph Yaacoub Sahyoun | Audio speaker with wobble free voice coil movement |
US6044925A (en) * | 1998-11-30 | 2000-04-04 | Sahyoun; Joseph Yaacoub | Passive speaker |
DE19943084A1 (de) * | 1999-09-09 | 2001-04-05 | Harman Audio Electronic Sys | Schallwandler |
DE10001410C2 (de) * | 2000-01-14 | 2001-12-06 | Harman Audio Electronic Sys | Flachlautsprecheranordnung |
US6751329B2 (en) * | 2000-09-21 | 2004-06-15 | New Transducers Limited | Loudspeaker driver |
US7109959B2 (en) | 2002-02-06 | 2006-09-19 | Andersen Corporation | Multi-task window |
US7180489B2 (en) * | 2002-02-06 | 2007-02-20 | Andersen Corporation | Automated multi-task window assembly |
KR100676719B1 (ko) * | 2002-10-25 | 2007-02-01 | 마쯔시다덴기산교 가부시키가이샤 | 서스펜션 및 이를 이용한 전기음향 변환장치 |
JP4031977B2 (ja) * | 2002-11-26 | 2008-01-09 | 有限会社ファル | 平面型スピーカー及びそれを用いたスピーカーシステム |
US8116512B2 (en) * | 2006-09-14 | 2012-02-14 | Bohlender Graebener Corporation | Planar speaker driver |
US8204269B2 (en) * | 2008-08-08 | 2012-06-19 | Sahyoun Joseph Y | Low profile audio speaker with minimization of voice coil wobble, protection and cooling |
US8540049B2 (en) | 2010-12-23 | 2013-09-24 | Bose Corporation | Acoustic diaphragm suspending |
EP2624595A4 (de) * | 2011-05-19 | 2015-07-01 | Tang Band Ind Co Ltd | Vibrationsplattenvorrichtung für einen elektromagnetischen vibrator und herstellungsverfahren dafür |
CN202949560U (zh) * | 2012-11-16 | 2013-05-22 | 瑞声声学科技(常州)有限公司 | 发声器 |
US9788122B2 (en) * | 2012-12-26 | 2017-10-10 | Xin Min HUANG | Vibrating panel device for electromagnetic vibrator and manufacture method thereof |
DE102014012327B3 (de) * | 2014-08-20 | 2015-12-03 | Helge Bots | Resonanzplatte zur Verbesserung der Klangcharakteristik herkömmlicher Lautsprecherboxen |
US9654879B2 (en) | 2014-10-24 | 2017-05-16 | Bose Corporation | Suspension for acoustic device |
US9466280B2 (en) | 2014-10-24 | 2016-10-11 | Bose Corporation | Acoustic device suspension |
AU2016322836B2 (en) | 2015-09-14 | 2021-07-29 | Wing Acoustics Limited | Improvements in or relating to audio transducers |
US9924273B2 (en) | 2016-03-31 | 2018-03-20 | Bose Corporation | Acoustic device configuration and method |
US11166100B2 (en) | 2017-03-15 | 2021-11-02 | Wing Acoustics Limited | Bass optimization for audio systems and devices |
TW201904310A (zh) | 2017-03-22 | 2019-01-16 | 紐西蘭商威恩音響有限公司 | 有關於聲頻轉換器、薄型電子裝置及鉸鏈系統的系統、方法及裝置 |
CN111818427A (zh) * | 2019-04-10 | 2020-10-23 | 鸿富锦精密工业(深圳)有限公司 | 振动***、扬声器及振动***的制作方法 |
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GB1003608A (en) * | 1962-01-15 | 1965-09-08 | Akg Akustische Kino Geraete | Improvements in or relating to diaphragms for loudspeakers |
JPS56112197A (en) * | 1980-02-12 | 1981-09-04 | Pioneer Electronic Corp | Flat diaphragm for speaker |
JPS5767398A (en) * | 1980-10-15 | 1982-04-23 | Sony Corp | Dynamic speaker |
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US2063945A (en) * | 1933-08-02 | 1936-12-15 | Pierce George Washington | Diaphragm and method |
US2744042A (en) * | 1951-06-21 | 1956-05-01 | Goodyear Tire & Rubber | Laminated panels |
DE1132593B (de) * | 1965-04-05 | 1962-07-05 | Bolt Beranek & Newman | Akustisch wirksame Platte, insbesondere zur Ankopplung an einen elektroakustischen Wandler |
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JPS5379525A (en) * | 1976-12-23 | 1978-07-14 | Sony Corp | Compound diaphtagm for speakers |
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EA002108B1 (ru) * | 1995-09-02 | 2001-12-24 | Нью Трэнсдьюсерз Лимитед | Громкоговоритель, содержащий панелеобразный звукоизлучающий элемент |
US6044925A (en) * | 1998-11-30 | 2000-04-04 | Sahyoun; Joseph Yaacoub | Passive speaker |
-
1997
- 1997-12-20 DE DE19757098A patent/DE19757098C2/de not_active Expired - Fee Related
-
1998
- 1998-12-15 EP EP98123818A patent/EP0924960B1/de not_active Expired - Lifetime
- 1998-12-15 DE DE59814416T patent/DE59814416D1/de not_active Expired - Lifetime
- 1998-12-18 US US09/216,155 patent/US6160898A/en not_active Expired - Lifetime
- 1998-12-21 JP JP10363300A patent/JPH11252684A/ja active Pending
Patent Citations (3)
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GB1003608A (en) * | 1962-01-15 | 1965-09-08 | Akg Akustische Kino Geraete | Improvements in or relating to diaphragms for loudspeakers |
JPS56112197A (en) * | 1980-02-12 | 1981-09-04 | Pioneer Electronic Corp | Flat diaphragm for speaker |
JPS5767398A (en) * | 1980-10-15 | 1982-04-23 | Sony Corp | Dynamic speaker |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN Bd. 0051, Nr. 86 (E-084), 25. November 1981 (1981-11-25) & JP 56 112197 A (PIONEER ELECTRONIC CORP), 4. September 1981 (1981-09-04) * |
PATENT ABSTRACTS OF JAPAN Bd. 0061, Nr. 44 (E-122), 3. August 1982 (1982-08-03) & JP 57 067398 A (SONY CORP), 23. April 1982 (1982-04-23) * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6546106B2 (en) | 1996-09-03 | 2003-04-08 | New Transducers Limited | Acoustic device |
GB2350008A (en) * | 1998-04-02 | 2000-11-15 | New Transducers Ltd | Acoustic device relying on bending wave action |
GB2350008B (en) * | 1998-04-02 | 2001-05-02 | New Transducers Ltd | Acoustic device |
WO1999052324A1 (en) * | 1998-04-02 | 1999-10-14 | New Transducers Limited | Acoustic device relying on bending wave action |
WO1999060818A1 (de) * | 1998-05-15 | 1999-11-25 | Harman Audio Electronic Systems Gmbh | Plattenlautsprecher |
US7236601B1 (en) | 1998-05-15 | 2007-06-26 | Wolfgang Bachmann | Panel loudspeaker |
US6836552B1 (en) | 1998-06-10 | 2004-12-28 | Harman Audio Electronic Systems Gmbh | Panel loudspeakers |
EP1100287A1 (de) * | 1999-11-10 | 2001-05-16 | M- Tech(HK) Co. Ltd | Lautsprecher |
WO2001047320A1 (en) * | 1999-12-21 | 2001-06-28 | New Transducers Limited | Loudspeakers |
GB2371941A (en) * | 1999-12-21 | 2002-08-07 | New Transducers Ltd | Loudspeakers |
WO2002013575A1 (en) * | 2000-08-03 | 2002-02-14 | New Transducers Limited | Bending wave loudspeaker |
US6826285B2 (en) | 2000-08-03 | 2004-11-30 | New Transducers Limited | Bending wave loudspeaker |
EP1604750A1 (de) * | 2004-06-08 | 2005-12-14 | ACHENBACH BUSCHHÜTTEN GmbH | Einrichtung zur Messung der Zugspannungsverteilung in bandförmigem Walzgut aus Metall |
Also Published As
Publication number | Publication date |
---|---|
EP0924960B1 (de) | 2009-11-25 |
JPH11252684A (ja) | 1999-09-17 |
DE19757098A1 (de) | 1999-06-24 |
EP0924960A3 (de) | 2005-04-13 |
US6160898A (en) | 2000-12-12 |
DE59814416D1 (de) | 2010-01-07 |
DE19757098C2 (de) | 2003-01-09 |
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