FR2151047B1 - - Google Patents

Info

Publication number
FR2151047B1
FR2151047B1 FR7230958A FR7230958A FR2151047B1 FR 2151047 B1 FR2151047 B1 FR 2151047B1 FR 7230958 A FR7230958 A FR 7230958A FR 7230958 A FR7230958 A FR 7230958A FR 2151047 B1 FR2151047 B1 FR 2151047B1
Authority
FR
France
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
FR7230958A
Other versions
FR2151047A1 (fr
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2151047A1 publication Critical patent/FR2151047A1/fr
Application granted granted Critical
Publication of FR2151047B1 publication Critical patent/FR2151047B1/fr
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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/01—Manufacture or treatment
    • H10N30/09—Forming piezoelectric or electrostrictive materials
    • H10N30/098—Forming organic materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR7230958A 1971-09-01 1972-08-31 Expired FR2151047B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7112001A NL7112001A (fr) 1971-09-01 1971-09-01

Publications (2)

Publication Number Publication Date
FR2151047A1 FR2151047A1 (fr) 1973-04-13
FR2151047B1 true FR2151047B1 (fr) 1978-12-29

Family

ID=19813920

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7230958A Expired FR2151047B1 (fr) 1971-09-01 1972-08-31

Country Status (12)

Country Link
JP (1) JPS5410854B2 (fr)
AT (1) AT318034B (fr)
AU (1) AU471029B2 (fr)
CA (1) CA990037A (fr)
CH (1) CH540768A (fr)
DE (1) DE2239743C3 (fr)
ES (1) ES406184A1 (fr)
FR (1) FR2151047B1 (fr)
GB (1) GB1381376A (fr)
IT (1) IT964359B (fr)
NL (1) NL7112001A (fr)
SE (1) SE379914B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2941644C2 (de) * 1978-10-17 1982-11-11 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Lautsprechermembran und Verfahren zu ihrer Herstellung
JPS5572391U (fr) * 1978-11-11 1980-05-19
DE2929432C2 (de) * 1979-07-20 1981-08-13 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Verfahren zur Herstellung eines elektrodynamischen Wandlers
FR2477823A1 (fr) * 1980-03-04 1981-09-11 Thomson Csf Procede de fabrication de transducteurs electromecaniques utilisant au moins un film en polymere et dispositif destine a la mise en oeuvre de ce procede
FR2522241A1 (fr) * 1982-02-22 1983-08-26 Thomson Csf Procede de fabrication de transducteurs polymeres piezoelectriques par forgeage
DE3339101A1 (de) * 1983-10-28 1984-08-23 Martin 6600 Saarbrücken Hauck Membrane fuer einen lautsprecher
US5388976A (en) * 1992-02-27 1995-02-14 Friedrich Theyson Gmbh Wall thickness measuring device with calibration device
JP2882969B2 (ja) * 1993-04-09 1999-04-19 株式会社ケンウッド フィルム成型方法及び成型装置
GB9906176D0 (en) 1999-03-17 1999-05-12 Unilever Plc Process for producing a water soluble package
GB9906169D0 (en) 1999-03-17 1999-05-12 Unilever Plc A process for producing a water soluble package
GB9906171D0 (en) 1999-03-17 1999-05-12 Unilever Plc A process for producing a water soluble package

Also Published As

Publication number Publication date
DE2239743B2 (de) 1979-05-17
JPS5410854B2 (fr) 1979-05-10
SE379914B (fr) 1975-10-20
FR2151047A1 (fr) 1973-04-13
IT964359B (it) 1974-01-21
AU4607172A (en) 1974-03-07
AT318034B (de) 1974-09-25
DE2239743C3 (de) 1980-01-24
AU471029B2 (en) 1976-04-08
CH540768A (de) 1973-08-31
ES406184A1 (es) 1976-01-16
JPS4833816A (fr) 1973-05-14
DE2239743A1 (de) 1973-03-08
NL7112001A (fr) 1973-03-05
CA990037A (en) 1976-06-01
GB1381376A (en) 1975-01-22

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Legal Events

Date Code Title Description
ST Notification of lapse