DK152639C - Fremgangsmaade og apparat til udspaending og fastgoerelse af en tynd folie - Google Patents

Fremgangsmaade og apparat til udspaending og fastgoerelse af en tynd folie

Info

Publication number
DK152639C
DK152639C DK445382A DK445382A DK152639C DK 152639 C DK152639 C DK 152639C DK 445382 A DK445382 A DK 445382A DK 445382 A DK445382 A DK 445382A DK 152639 C DK152639 C DK 152639C
Authority
DK
Denmark
Prior art keywords
spreading
procedure
determining
thin film
thin
Prior art date
Application number
DK445382A
Other languages
English (en)
Other versions
DK445382A (da
DK152639B (da
Inventor
Niels Martin Jensen
Original Assignee
Niels Martin Jensen
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 Niels Martin Jensen filed Critical Niels Martin Jensen
Priority to DK445382A priority Critical patent/DK152639C/da
Priority to EP19830903379 priority patent/EP0121555A1/en
Priority to PCT/DK1983/000093 priority patent/WO1984001683A1/en
Publication of DK445382A publication Critical patent/DK445382A/da
Publication of DK152639B publication Critical patent/DK152639B/da
Application granted granted Critical
Publication of DK152639C publication Critical patent/DK152639C/da

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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/24—Tensioning by means acting directly on free portions of diaphragm or cone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Manufacturing & Machinery (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
DK445382A 1982-10-08 1982-10-08 Fremgangsmaade og apparat til udspaending og fastgoerelse af en tynd folie DK152639C (da)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DK445382A DK152639C (da) 1982-10-08 1982-10-08 Fremgangsmaade og apparat til udspaending og fastgoerelse af en tynd folie
EP19830903379 EP0121555A1 (en) 1982-10-08 1983-10-07 Diaphragm stretching apparatus
PCT/DK1983/000093 WO1984001683A1 (en) 1982-10-08 1983-10-07 Diaphragm stretching apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK445382 1982-10-08
DK445382A DK152639C (da) 1982-10-08 1982-10-08 Fremgangsmaade og apparat til udspaending og fastgoerelse af en tynd folie

Publications (3)

Publication Number Publication Date
DK445382A DK445382A (da) 1984-04-09
DK152639B DK152639B (da) 1988-03-28
DK152639C true DK152639C (da) 1989-03-13

Family

ID=8133650

Family Applications (1)

Application Number Title Priority Date Filing Date
DK445382A DK152639C (da) 1982-10-08 1982-10-08 Fremgangsmaade og apparat til udspaending og fastgoerelse af en tynd folie

Country Status (3)

Country Link
EP (1) EP0121555A1 (da)
DK (1) DK152639C (da)
WO (1) WO1984001683A1 (da)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4568414A (en) * 1984-09-21 1986-02-04 At&T Technologies, Inc. Methods and apparatus for tensioning sheet material
US5014322A (en) * 1987-03-04 1991-05-07 Hosiden Electronics Co., Ltd. Diaphragm unit of a condenser microphone, a method of fabricating the same, and a condenser microphone
US6532293B1 (en) 2000-02-08 2003-03-11 Knowles Electronics Llc Acoustical transducer with reduced parasitic capacitance
US7184563B2 (en) 2003-03-04 2007-02-27 Knowles Electronics Llc. Electret condenser microphone

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE361603A (da) * 1928-06-18
US1943425A (en) * 1931-12-26 1934-01-16 Kellogg Switchboard & Supply Diaphragm
GB884364A (en) * 1957-05-02 1961-12-13 Rola Celestion Ltd Improvements in or relating to electrostatic loudspeakers
JPS5110924A (da) * 1974-07-16 1976-01-28 Sony Corp

Also Published As

Publication number Publication date
EP0121555A1 (en) 1984-10-17
WO1984001683A1 (en) 1984-04-26
DK445382A (da) 1984-04-09
DK152639B (da) 1988-03-28

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Legal Events

Date Code Title Description
PHB Application deemed withdrawn due to non-payment or other reasons
RPHB Correction of: application shelved due to non-payment

Free format text: 880704

RPHB Correction of: application shelved due to non-payment
PBP Patent lapsed