JPS5691598A - Dynamic converter with voice coll in air gap filled with magnetic fluid - Google Patents

Dynamic converter with voice coll in air gap filled with magnetic fluid

Info

Publication number
JPS5691598A
JPS5691598A JP16918880A JP16918880A JPS5691598A JP S5691598 A JPS5691598 A JP S5691598A JP 16918880 A JP16918880 A JP 16918880A JP 16918880 A JP16918880 A JP 16918880A JP S5691598 A JPS5691598 A JP S5691598A
Authority
JP
Japan
Prior art keywords
air gap
magnetic fluid
gap filled
dynamic converter
coll
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
JP16918880A
Other languages
English (en)
Japanese (ja)
Other versions
JPS633515B2 (enExample
Inventor
Torauerunihitsuto Heruberuto
Haintsu Teiire Kaaru
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of JPS5691598A publication Critical patent/JPS5691598A/ja
Publication of JPS633515B2 publication Critical patent/JPS633515B2/ja
Granted 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)
JP16918880A 1979-12-06 1980-12-02 Dynamic converter with voice coll in air gap filled with magnetic fluid Granted JPS5691598A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2949115A DE2949115C3 (de) 1979-12-06 1979-12-06 Dynamischer Wandler mit einer Schwingspule in einem mit einer magnetischen Flüssigkeit gefüllten Luftspalt und Verfahren zum Einfüllen und/oder gleichmäßigen Verteilen dieser Flüssigkeit

Publications (2)

Publication Number Publication Date
JPS5691598A true JPS5691598A (en) 1981-07-24
JPS633515B2 JPS633515B2 (enExample) 1988-01-25

Family

ID=6087766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16918880A Granted JPS5691598A (en) 1979-12-06 1980-12-02 Dynamic converter with voice coll in air gap filled with magnetic fluid

Country Status (3)

Country Link
US (1) US4414437A (enExample)
JP (1) JPS5691598A (enExample)
DE (1) DE2949115C3 (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006080221A1 (ja) * 2005-01-31 2006-08-03 Matsushita Electric Industrial Co., Ltd. スピーカ
WO2006082774A1 (ja) * 2005-02-07 2006-08-10 Matsushita Electric Industrial Co., Ltd. スピーカ
US9804072B2 (en) 2011-11-28 2017-10-31 Hysitron, Inc. High temperature heating system
US9829417B2 (en) 2012-06-13 2017-11-28 Hysitron, Inc. Environmental conditioning assembly for use in mechanical testing at micron or nano-scales

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5151943A (en) * 1990-11-13 1992-09-29 Mcintosh Laboratory, Inc. Low distortion dynamic loudspeaker
JPH05164181A (ja) * 1991-12-06 1993-06-29 Tokai Rubber Ind Ltd 流体封入式防振装置
DE19610997B4 (de) * 1996-03-21 2006-07-13 Sennheiser Electronic Gmbh & Co. Kg Elektrodynamischer Schallwandler mit Magnetspaltenabdichtung und Hörhilfe
US6041131A (en) * 1997-07-09 2000-03-21 Knowles Electronics, Inc. Shock resistant electroacoustic transducer
US20020094103A1 (en) * 2000-10-30 2002-07-18 Babb Burton A. Acoustic loudspeaker
CN101106838A (zh) * 2001-02-13 2008-01-16 松下电器产业株式会社 磁性流体的保持方法和利用该方法的扬声器
SE523125C2 (sv) * 2001-06-21 2004-03-30 P & B Res Ab Vibrator för vibrationsalstring i benförankrade hörapparater
US6868167B2 (en) * 2002-04-11 2005-03-15 Ferrotec Corporation Audio speaker and method for assembling an audio speaker
US6804368B2 (en) * 2002-04-11 2004-10-12 Ferrotec Corporation Micro-speaker and method for assembling a micro-speaker
JP2006005852A (ja) * 2004-06-21 2006-01-05 Pioneer Electronic Corp スピーカー装置
US7729504B2 (en) * 2006-02-14 2010-06-01 Ferrotec Corporation Ferrofluid centered voice coil speaker
CN103765921B (zh) * 2012-06-20 2018-02-13 松下知识产权经营株式会社 扬声器以及具备该扬声器的设备
US10573285B1 (en) 2017-01-30 2020-02-25 Mark J. BONNER Portable electronic musical system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE368021A (enExample) * 1929-03-02
US3792394A (en) * 1971-12-16 1974-02-12 J Bertagni Voice coil
US4017694A (en) * 1976-02-18 1977-04-12 Essex Group, Inc. Method for making loudspeaker with magnetic fluid enveloping the voice coil
DE2740661C3 (de) * 1977-09-09 1980-06-12 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Dynamischer Wandler mit einer Schwingspule in einem mit einer magnetischen Flüssigkeit gefüllten Luftspalt
DE2900427B1 (de) * 1979-01-08 1979-08-02 Licentia Gmbh Dynamischer Wandler mit einer Schwingspule in einem mit einer magnetischen Fluessigkeit gefuellten Luftspalt

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006080221A1 (ja) * 2005-01-31 2006-08-03 Matsushita Electric Industrial Co., Ltd. スピーカ
US8098876B2 (en) 2005-01-31 2012-01-17 Panasonic Corporation Speaker
WO2006082774A1 (ja) * 2005-02-07 2006-08-10 Matsushita Electric Industrial Co., Ltd. スピーカ
JP2006217452A (ja) * 2005-02-07 2006-08-17 Matsushita Electric Ind Co Ltd スピーカ
US9804072B2 (en) 2011-11-28 2017-10-31 Hysitron, Inc. High temperature heating system
US10241017B2 (en) 2011-11-28 2019-03-26 Bruker Nano, Inc. High temperature heating system
US9829417B2 (en) 2012-06-13 2017-11-28 Hysitron, Inc. Environmental conditioning assembly for use in mechanical testing at micron or nano-scales

Also Published As

Publication number Publication date
US4414437A (en) 1983-11-08
JPS633515B2 (enExample) 1988-01-25
DE2949115C3 (de) 1982-04-22
DE2949115A1 (de) 1981-06-11
DE2949115B2 (de) 1981-09-03

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