EP0441881A4 - Shallow loudspeaker with slotted magnet structure - Google Patents
Shallow loudspeaker with slotted magnet structureInfo
- Publication number
- EP0441881A4 EP0441881A4 EP19890912920 EP89912920A EP0441881A4 EP 0441881 A4 EP0441881 A4 EP 0441881A4 EP 19890912920 EP19890912920 EP 19890912920 EP 89912920 A EP89912920 A EP 89912920A EP 0441881 A4 EP0441881 A4 EP 0441881A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnet structure
- loudspeaker
- shallow
- slotted magnet
- slotted
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/045—Mounting
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US26837688A | 1988-11-07 | 1988-11-07 | |
US268376 | 1994-06-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0441881A1 EP0441881A1 (en) | 1991-08-21 |
EP0441881A4 true EP0441881A4 (en) | 1991-09-04 |
EP0441881B1 EP0441881B1 (en) | 1994-03-23 |
Family
ID=23022723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89912920A Expired - Lifetime EP0441881B1 (en) | 1988-11-07 | 1989-10-12 | Shallow loudspeaker with slotted magnet structure |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0441881B1 (en) |
JP (1) | JP2756037B2 (en) |
AU (1) | AU620185B2 (en) |
CA (1) | CA1318965C (en) |
DE (1) | DE68914164T2 (en) |
DK (1) | DK81391A (en) |
MX (1) | MX170535B (en) |
WO (1) | WO1990005435A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9210463U1 (en) * | 1992-08-05 | 1992-10-22 | Nokia (Deutschland) GmbH, 7530 Pforzheim | Coaxial speaker arrangement |
EP1228664B1 (en) * | 2000-01-27 | 2008-03-05 | Nxp B.V. | Electroacoustic transducer having a diaphragm with coil mounting projections and interposed stabilizing walls |
US6842529B2 (en) | 2000-09-04 | 2005-01-11 | Matsushita Electric Industrial Co., Ltd. | Speaker |
WO2012038981A1 (en) * | 2010-09-23 | 2012-03-29 | Praveen Vallabhaneni | Linear actuation loudspeaker driver |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1801374A1 (en) * | 1967-10-10 | 1969-06-26 | Elland Karl Yngve | Freezer and for this specific cardboard box, box or the like. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5527721A (en) * | 1978-08-18 | 1980-02-28 | Sony Corp | Diaphragm for electroacoustic converter |
JPS5627600A (en) * | 1979-08-10 | 1981-03-17 | Kanenori Kishi | Magnetic circuit of moving coil type transducer |
JPS6068799A (en) * | 1984-07-30 | 1985-04-19 | Matsushita Electric Ind Co Ltd | Speaker |
AU595703B2 (en) * | 1987-04-08 | 1990-04-05 | Harman International Industries Incorporated | Shallow loudspeaker |
-
1989
- 1989-09-25 CA CA000613041A patent/CA1318965C/en not_active Expired - Fee Related
- 1989-10-12 EP EP89912920A patent/EP0441881B1/en not_active Expired - Lifetime
- 1989-10-12 AU AU46268/89A patent/AU620185B2/en not_active Ceased
- 1989-10-12 DE DE68914164T patent/DE68914164T2/en not_active Expired - Fee Related
- 1989-10-12 WO PCT/US1989/004501 patent/WO1990005435A1/en active IP Right Grant
- 1989-10-12 JP JP2500312A patent/JP2756037B2/en not_active Expired - Lifetime
- 1989-11-07 MX MX1825889A patent/MX170535B/en unknown
-
1991
- 1991-05-01 DK DK081391A patent/DK81391A/en not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1801374A1 (en) * | 1967-10-10 | 1969-06-26 | Elland Karl Yngve | Freezer and for this specific cardboard box, box or the like. |
Non-Patent Citations (1)
Title |
---|
See also references of WO9005435A1 * |
Also Published As
Publication number | Publication date |
---|---|
DK81391D0 (en) | 1991-05-01 |
EP0441881B1 (en) | 1994-03-23 |
DK81391A (en) | 1991-05-01 |
JPH04501643A (en) | 1992-03-19 |
DE68914164T2 (en) | 1994-06-30 |
MX170535B (en) | 1993-08-30 |
AU4626889A (en) | 1990-05-28 |
DE68914164D1 (en) | 1994-04-28 |
CA1318965C (en) | 1993-06-08 |
JP2756037B2 (en) | 1998-05-25 |
AU620185B2 (en) | 1992-02-13 |
EP0441881A1 (en) | 1991-08-21 |
WO1990005435A1 (en) | 1990-05-17 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 19910319 |
|
AK | Designated contracting states |
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A4 | Supplementary search report drawn up and despatched |
Effective date: 19910716 |
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17Q | First examination report despatched |
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GRAA | (expected) grant |
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REF | Corresponds to: |
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ET | Fr: translation filed | ||
ITF | It: translation for a ep patent filed |
Owner name: SOCIETA' ITALIANA BREVETTI S.P.A. |
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PLBE | No opposition filed within time limit |
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STAA | Information on the status of an ep patent application or granted ep patent |
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