GB1295790A - - Google Patents

Info

Publication number
GB1295790A
GB1295790A GB1295790DA GB1295790A GB 1295790 A GB1295790 A GB 1295790A GB 1295790D A GB1295790D A GB 1295790DA GB 1295790 A GB1295790 A GB 1295790A
Authority
GB
United Kingdom
Prior art keywords
magnet
housing
casing
rim
projections
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
Application number
Other languages
English (en)
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 GB1295790A publication Critical patent/GB1295790A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/10—Telephone receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
GB1295790D 1970-06-29 1971-06-24 Expired GB1295790A (https=)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE702032051A DE2032051C2 (de) 1970-06-29 1970-06-29 Elektrodynamischer Wandler

Publications (1)

Publication Number Publication Date
GB1295790A true GB1295790A (https=) 1972-11-08

Family

ID=5775242

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1295790D Expired GB1295790A (https=) 1970-06-29 1971-06-24

Country Status (3)

Country Link
AU (1) AU2975171A (https=)
DE (1) DE2032051C2 (https=)
GB (1) GB1295790A (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7266213B2 (en) 2001-10-30 2007-09-04 Citizen Electronics Co., Ltd. Compact speaker with a protective cover

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2503828C3 (de) * 1975-01-30 1983-04-21 Friedrich Reiner Telefonfabrik Permanentdynamische elektroakustische Wandlerkapsel
DE2927925C2 (de) * 1979-07-11 1983-01-20 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Elektrodynamischer Wandler, insbesondere für Fernsprechapparate
KR100412221B1 (ko) * 2001-08-31 2003-12-24 삼성전기주식회사 휴대 전화기용 소형 스피커

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7266213B2 (en) 2001-10-30 2007-09-04 Citizen Electronics Co., Ltd. Compact speaker with a protective cover
CN100409722C (zh) * 2001-10-30 2008-08-06 株式会社西铁城电子 扬声器

Also Published As

Publication number Publication date
DE2032051C2 (de) 1979-03-08
AU2975171A (en) 1972-12-14
DE2032051B1 (de) 1971-11-18

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee