JPH024559Y2 - - Google Patents
Info
- Publication number
- JPH024559Y2 JPH024559Y2 JP1987051680U JP5168087U JPH024559Y2 JP H024559 Y2 JPH024559 Y2 JP H024559Y2 JP 1987051680 U JP1987051680 U JP 1987051680U JP 5168087 U JP5168087 U JP 5168087U JP H024559 Y2 JPH024559 Y2 JP H024559Y2
- Authority
- JP
- Japan
- Prior art keywords
- vibrating
- electroacoustic transducer
- coil
- bass speaker
- vibrating coil
- 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.)
- Expired
Links
- 239000007788 liquid Substances 0.000 claims description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000013016 damping Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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
- H04R9/025—Magnetic circuit
- H04R9/027—Air gaps using a magnetic fluid
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2740661A DE2740661C3 (de) | 1977-09-09 | 1977-09-09 | Dynamischer Wandler mit einer Schwingspule in einem mit einer magnetischen Flüssigkeit gefüllten Luftspalt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6312990U JPS6312990U (US07709020-20100504-C00041.png) | 1988-01-28 |
| JPH024559Y2 true JPH024559Y2 (US07709020-20100504-C00041.png) | 1990-02-02 |
Family
ID=6018534
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10904978A Pending JPS5451519A (en) | 1977-09-09 | 1978-09-05 | Dynamic electric sound transducer that has vibrating coil in void* in which magnetic liquid is filled |
| JP1987051680U Expired JPH024559Y2 (US07709020-20100504-C00041.png) | 1977-09-09 | 1987-04-07 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10904978A Pending JPS5451519A (en) | 1977-09-09 | 1978-09-05 | Dynamic electric sound transducer that has vibrating coil in void* in which magnetic liquid is filled |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4303806A (US07709020-20100504-C00041.png) |
| JP (2) | JPS5451519A (US07709020-20100504-C00041.png) |
| DE (1) | DE2740661C3 (US07709020-20100504-C00041.png) |
| GB (1) | GB2004161B (US07709020-20100504-C00041.png) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2062408B (en) * | 1979-10-02 | 1984-02-22 | Victor Company Of Japan | Speaker |
| DE2949115C3 (de) * | 1979-12-06 | 1982-04-22 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Dynamischer Wandler mit einer Schwingspule in einem mit einer magnetischen Flüssigkeit gefüllten Luftspalt und Verfahren zum Einfüllen und/oder gleichmäßigen Verteilen dieser Flüssigkeit |
| DE3028065A1 (de) * | 1980-07-24 | 1982-02-18 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Dynamischer wandler mit mitteln zur verringerung des streufeldes fuer fernsehgeraete |
| JPS57136897A (en) * | 1981-02-18 | 1982-08-24 | Ibuki Kogyo Kk | Horn speaker |
| GB2125652A (en) * | 1982-06-01 | 1984-03-07 | Harman Int Ind | Loudspeaker voice coil |
| US4914750A (en) * | 1987-07-13 | 1990-04-03 | Avm Hess, Inc. | Sound transducer |
| JP3979509B2 (ja) * | 1998-12-04 | 2007-09-19 | パイオニア株式会社 | スピ―カ―装置 |
| US6751060B2 (en) | 2000-12-05 | 2004-06-15 | Imation Corp. | Magnetic media with readable topographical features |
| US6628598B2 (en) | 2000-12-05 | 2003-09-30 | Imation Corp. | Patterned media system |
| US6804368B2 (en) * | 2002-04-11 | 2004-10-12 | Ferrotec Corporation | Micro-speaker and method for assembling a micro-speaker |
| US6868167B2 (en) * | 2002-04-11 | 2005-03-15 | Ferrotec Corporation | Audio speaker and method for assembling an audio speaker |
| US20040008858A1 (en) * | 2002-05-02 | 2004-01-15 | Steere John F. | Acoustically enhanced electro-dynamic loudspeakers |
| US20070053545A1 (en) * | 2005-09-07 | 2007-03-08 | Steff Lin | Speaker |
| EP1950998B1 (en) * | 2007-01-29 | 2014-03-26 | Sony Corporation | Speaker unit and speaker apparatus |
| EP3005540A1 (en) | 2013-08-26 | 2016-04-13 | Halliburton Energy Services, Inc. | Variable reluctance transducers |
| JP6399390B2 (ja) * | 2013-12-27 | 2018-10-03 | パナソニックＩｐマネジメント株式会社 | スピーカおよびａｖ機器 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50112019A (US07709020-20100504-C00041.png) * | 1974-02-12 | 1975-09-03 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1971452A (en) * | 1931-03-16 | 1934-08-28 | Siemens Ag | Diaphragm for electrodynamic loud speakers |
| US4017694A (en) * | 1976-02-18 | 1977-04-12 | Essex Group, Inc. | Method for making loudspeaker with magnetic fluid enveloping the voice coil |
-
1977
- 1977-09-09 DE DE2740661A patent/DE2740661C3/de not_active Expired
-
1978
- 1978-09-05 JP JP10904978A patent/JPS5451519A/ja active Pending
- 1978-09-06 GB GB7835768A patent/GB2004161B/en not_active Expired
-
1979
- 1979-12-28 US US06/107,783 patent/US4303806A/en not_active Expired - Lifetime
-
1987
- 1987-04-07 JP JP1987051680U patent/JPH024559Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50112019A (US07709020-20100504-C00041.png) * | 1974-02-12 | 1975-09-03 |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2004161B (en) | 1982-07-28 |
| DE2740661C3 (de) | 1980-06-12 |
| GB2004161A (en) | 1979-03-21 |
| JPS6312990U (US07709020-20100504-C00041.png) | 1988-01-28 |
| US4303806A (en) | 1981-12-01 |
| DE2740661A1 (de) | 1979-04-05 |
| DE2740661B2 (de) | 1979-09-20 |
| JPS5451519A (en) | 1979-04-23 |
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