JPS6147039B2 - - Google Patents

Info

Publication number
JPS6147039B2
JPS6147039B2 JP52020192A JP2019277A JPS6147039B2 JP S6147039 B2 JPS6147039 B2 JP S6147039B2 JP 52020192 A JP52020192 A JP 52020192A JP 2019277 A JP2019277 A JP 2019277A JP S6147039 B2 JPS6147039 B2 JP S6147039B2
Authority
JP
Japan
Prior art keywords
furnace
formwork
temperature
manufacturing
flow rate
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
JP52020192A
Other languages
English (en)
Japanese (ja)
Other versions
JPS53106025A (en
Inventor
Nobuhiro Tsukagoshi
Teruo Toma
Shinichi Yokozeki
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP2019277A priority Critical patent/JPS53106025A/ja
Publication of JPS53106025A publication Critical patent/JPS53106025A/ja
Priority to US06/315,564 priority patent/US4395814A/en
Publication of JPS6147039B2 publication Critical patent/JPS6147039B2/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/16—Mounting or connecting stylus to transducer with or without damping means
    • H04R1/18—Holders for styli; Mounting holders on transducers
    • 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
    • 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
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/023—Diaphragms comprising ceramic-like materials, e.g. pure ceramic, glass, boride, nitride, carbide, mica and carbon materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49005—Acoustic transducer

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
JP2019277A 1977-02-28 1977-02-28 Acoustic vibrator and making method thereof Granted JPS53106025A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019277A JPS53106025A (en) 1977-02-28 1977-02-28 Acoustic vibrator and making method thereof
US06/315,564 US4395814A (en) 1977-02-28 1981-10-27 Acoustic vibrating element of graphite and method of manufacturing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019277A JPS53106025A (en) 1977-02-28 1977-02-28 Acoustic vibrator and making method thereof

Publications (2)

Publication Number Publication Date
JPS53106025A JPS53106025A (en) 1978-09-14
JPS6147039B2 true JPS6147039B2 (enExample) 1986-10-17

Family

ID=12020303

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019277A Granted JPS53106025A (en) 1977-02-28 1977-02-28 Acoustic vibrator and making method thereof

Country Status (2)

Country Link
US (1) US4395814A (enExample)
JP (1) JPS53106025A (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58162194A (ja) * 1982-03-23 1983-09-26 Ulvac Corp 音響用振動板
JPS63274295A (ja) * 1987-04-30 1988-11-11 Yamaha Corp 音響機器用振動板の製造方法
GB2222346B (en) * 1988-08-24 1993-02-17 Mitsubishi Pencil Co Process for producing acoustic carbon diaphragm
GB2222347B (en) * 1988-08-24 1992-04-15 Mitsubishi Pencil Co Process for producing diaphragm for acoustic device of vitreous hard carbonaceous materials

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138435A (en) * 1961-06-26 1964-06-23 Gen Electric Deposition apparatus and method for forming a pyrolytic graphite article
US3297406A (en) * 1962-12-19 1967-01-10 Gen Electric Method of forming pyrolytic graphite sheets
US3410746A (en) * 1964-03-12 1968-11-12 Space Age Materials Corp Grain-oriented pyrolytic graphite forms and method of making same
US3720499A (en) * 1970-03-06 1973-03-13 Westinghouse Electric Corp Process for producing pyrolytic graphite
JPS51140619A (en) * 1975-05-30 1976-12-03 Pioneer Electronic Corp Vibration member for acoustic convertor
JPS5548518A (en) * 1978-10-01 1980-04-07 Noboru Mimura Angle cutter

Also Published As

Publication number Publication date
US4395814A (en) 1983-08-02
JPS53106025A (en) 1978-09-14

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