JPS6312990U - - Google Patents

Info

Publication number
JPS6312990U
JPS6312990U JP1987051680U JP5168087U JPS6312990U JP S6312990 U JPS6312990 U JP S6312990U JP 1987051680 U JP1987051680 U JP 1987051680U JP 5168087 U JP5168087 U JP 5168087U JP S6312990 U JPS6312990 U JP S6312990U
Authority
JP
Japan
Prior art keywords
electroacoustic transducer
transducer according
coil
vibrating
sheet
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
Application number
JP1987051680U
Other languages
English (en)
Japanese (ja)
Other versions
JPH024559Y2 (enExample
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of JPS6312990U publication Critical patent/JPS6312990U/ja
Application granted granted Critical
Publication of JPH024559Y2 publication Critical patent/JPH024559Y2/ja
Expired legal-status Critical Current

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
    • H04R9/025—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)
JP1987051680U 1977-09-09 1987-04-07 Expired JPH024559Y2 (enExample)

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 true JPS6312990U (enExample) 1988-01-28
JPH024559Y2 JPH024559Y2 (enExample) 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 (enExample) 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 (enExample)
JP (2) JPS5451519A (enExample)
DE (1) DE2740661C3 (enExample)
GB (1) GB2004161B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015144415A (ja) * 2013-12-27 2015-08-06 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

Families Citing this family (15)

* Cited by examiner, † Cited by third party
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
US6628598B2 (en) 2000-12-05 2003-09-30 Imation Corp. Patterned media system
US6751060B2 (en) * 2000-12-05 2004-06-15 Imation Corp. Magnetic media with readable topographical features
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
WO2015030709A1 (en) 2013-08-26 2015-03-05 Halliburton Energy Services, Inc. Variable reluctance transducers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50112019A (enExample) * 1974-02-12 1975-09-03

Family Cites Families (2)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50112019A (enExample) * 1974-02-12 1975-09-03

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015144415A (ja) * 2013-12-27 2015-08-06 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

Also Published As

Publication number Publication date
JPS5451519A (en) 1979-04-23
DE2740661C3 (de) 1980-06-12
GB2004161A (en) 1979-03-21
DE2740661A1 (de) 1979-04-05
DE2740661B2 (de) 1979-09-20
GB2004161B (en) 1982-07-28
JPH024559Y2 (enExample) 1990-02-02
US4303806A (en) 1981-12-01

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