JPS5787695A - Dome type diaphragm plate - Google Patents

Dome type diaphragm plate

Info

Publication number
JPS5787695A
JPS5787695A JP16423580A JP16423580A JPS5787695A JP S5787695 A JPS5787695 A JP S5787695A JP 16423580 A JP16423580 A JP 16423580A JP 16423580 A JP16423580 A JP 16423580A JP S5787695 A JPS5787695 A JP S5787695A
Authority
JP
Japan
Prior art keywords
phenol
resin
reacted
shape
diaphragm plate
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
JP16423580A
Other languages
Japanese (ja)
Other versions
JPS6313594B2 (en
Inventor
Akira Ikei
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.)
Onkyo Corp
Original Assignee
Onkyo Corp
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 Onkyo Corp filed Critical Onkyo Corp
Priority to JP16423580A priority Critical patent/JPS5787695A/en
Publication of JPS5787695A publication Critical patent/JPS5787695A/en
Publication of JPS6313594B2 publication Critical patent/JPS6313594B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To prevent the production of harmonic distortion, by using denaturated phenol resin chemically binding and unifying phenol and polybutadiene as shape-holding resin. CONSTITUTION:Single or mixture of oligomer of isopropenylphenol or isopropenylphenol and polybutadiene are reacted in the presence of acid catalyzer. They are reacted in the presence of phenol group and acid catalyzed, and this reaction product is reacted with formaldehyde as a part of phenol conponent and the denaturated phenol resin is used as shape holding resin. This shape holding resin is impregnated into a base cloth to be formed into a prescribed shape.
JP16423580A 1980-11-20 1980-11-20 Dome type diaphragm plate Granted JPS5787695A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16423580A JPS5787695A (en) 1980-11-20 1980-11-20 Dome type diaphragm plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16423580A JPS5787695A (en) 1980-11-20 1980-11-20 Dome type diaphragm plate

Publications (2)

Publication Number Publication Date
JPS5787695A true JPS5787695A (en) 1982-06-01
JPS6313594B2 JPS6313594B2 (en) 1988-03-26

Family

ID=15789233

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16423580A Granted JPS5787695A (en) 1980-11-20 1980-11-20 Dome type diaphragm plate

Country Status (1)

Country Link
JP (1) JPS5787695A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06117755A (en) * 1992-10-01 1994-04-28 Ritsukusu Kk Vacuum drier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06117755A (en) * 1992-10-01 1994-04-28 Ritsukusu Kk Vacuum drier

Also Published As

Publication number Publication date
JPS6313594B2 (en) 1988-03-26

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