FR987123A - Loudspeaker enhancements - Google Patents

Loudspeaker enhancements

Info

Publication number
FR987123A
FR987123A FR987123DA FR987123A FR 987123 A FR987123 A FR 987123A FR 987123D A FR987123D A FR 987123DA FR 987123 A FR987123 A FR 987123A
Authority
FR
France
Prior art keywords
enhancements
loudspeaker
loudspeaker enhancements
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
French (fr)
Inventor
Pierre Varnet
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
Application granted granted Critical
Publication of FR987123A publication Critical patent/FR987123A/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; 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
FR987123D 1949-03-31 1949-03-31 Loudspeaker enhancements Expired FR987123A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR987123T 1949-03-31

Publications (1)

Publication Number Publication Date
FR987123A true FR987123A (en) 1951-08-09

Family

ID=9538692

Family Applications (1)

Application Number Title Priority Date Filing Date
FR987123D Expired FR987123A (en) 1949-03-31 1949-03-31 Loudspeaker enhancements

Country Status (3)

Country Link
US (1) US2657758A (en)
FR (1) FR987123A (en)
NL (1) NL73443C (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL90604C (en) * 1951-12-05
US2815823A (en) * 1953-03-02 1957-12-10 Rca Corp Loudspeaker structure
US3180945A (en) * 1961-09-22 1965-04-27 Wm H Welsh Co Inc Loudspeaker
JP3874467B2 (en) * 1996-09-27 2007-01-31 松下電器産業株式会社 Copper foil thread wax and speaker copper foil thread and speaker using the same
US6929091B2 (en) * 2002-10-28 2005-08-16 Sound Advance Systems, Inc. Planar diaphragm loudspeaker and related methods
DE602004013605D1 (en) * 2003-08-19 2008-06-19 Matsushita Electric Ind Co Ltd speaker
US9628917B2 (en) 2014-07-23 2017-04-18 Bose Corporation Sound producing system
US9913042B2 (en) 2016-06-14 2018-03-06 Bose Corporation Miniature device having an acoustic diaphragm
US10499159B2 (en) * 2017-05-17 2019-12-03 Bose Corporation Method of fabricating a miniature device having an acoustic diaphragm
US10448183B2 (en) * 2017-07-27 2019-10-15 Bose Corporation Method of fabricating a miniature device having an acoustic diaphragm

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US804903A (en) * 1905-05-25 1905-11-21 John H Van Mater Acoustic diaphragm.
US1040294A (en) * 1911-10-11 1912-10-08 James H Ellis Diaphragm.
US1624357A (en) * 1923-06-15 1927-04-12 Western Electric Co Phonic diaphragm
US1846937A (en) * 1930-05-09 1932-02-23 Gen Electric Diaphragm for loud speakers
US1722805A (en) * 1926-07-31 1929-07-30 Bell Telephone Labor Inc Sound radiator
US1825833A (en) * 1929-06-21 1931-10-06 Tennesse Hans Acoustic diaphragm
US1941476A (en) * 1930-06-27 1934-01-02 Jensen Radio Mfg Company Method of making sound reproducers
FR738415A (en) * 1931-10-02 1932-12-26 Vibrating diaphragm for sound devices
US1956826A (en) * 1932-06-16 1934-05-01 Rola Company Method of making alpha voice coil
US2030501A (en) * 1934-01-31 1936-02-11 Rca Corp Loudspeaker cone diaphragm and method of producing same
US2288832A (en) * 1937-08-31 1942-07-07 Rca Corp Fibrous acoustic diaphragm
US2531634A (en) * 1945-01-11 1950-11-28 Athol E N Lawrance Acoustical diaphragm with stiffening means
US2512323A (en) * 1946-09-09 1950-06-20 Radio Frequency Lab Inc Reentrant diaphragm with central closure member

Also Published As

Publication number Publication date
NL73443C (en)
US2657758A (en) 1953-11-03

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