EP0441881A4 - Shallow loudspeaker with slotted magnet structure - Google Patents

Shallow loudspeaker with slotted magnet structure

Info

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
Application number
EP19890912920
Other versions
EP0441881A1 (en
EP0441881B1 (en
Inventor
William Neal House
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.)
Harman International Industries Inc
Original Assignee
Harman International Industries Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23022723&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0441881(A4) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Harman International Industries Inc filed Critical Harman International Industries Inc
Publication of EP0441881A1 publication Critical patent/EP0441881A1/en
Publication of EP0441881A4 publication Critical patent/EP0441881A4/en
Application granted granted Critical
Publication of EP0441881B1 publication Critical patent/EP0441881B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04R9/04—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
EP89912920A 1988-11-07 1989-10-12 Shallow loudspeaker with slotted magnet structure Expired - Lifetime EP0441881B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US26837688A 1988-11-07 1988-11-07
US268376 1988-11-07

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9210463U1 (en) * 1992-08-05 1992-10-22 Nokia (Deutschland) Gmbh, 7530 Pforzheim, De
CN1218609C (en) * 2000-01-27 2005-09-07 皇家菲利浦电子有限公司 Electroacoustic transducer having 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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Title
See also references of WO9005435A1 *

Also Published As

Publication number Publication date
DE68914164T2 (en) 1994-06-30
WO1990005435A1 (en) 1990-05-17
DK81391D0 (en) 1991-05-01
AU4626889A (en) 1990-05-28
DE68914164D1 (en) 1994-04-28
JP2756037B2 (en) 1998-05-25
CA1318965C (en) 1993-06-08
DK81391A (en) 1991-05-01
AU620185B2 (en) 1992-02-13
EP0441881A1 (en) 1991-08-21
JPH04501643A (en) 1992-03-19
MX170535B (en) 1993-08-30
EP0441881B1 (en) 1994-03-23

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