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JPS6472699A - Speaker diaphragm and its manufacture - Google Patents

Speaker diaphragm and its manufacture

Info

Publication number
JPS6472699A
JPS6472699AJP22911087AJP22911087AJPS6472699AJP S6472699 AJPS6472699 AJP S6472699AJP 22911087 AJP22911087 AJP 22911087AJP 22911087 AJP22911087 AJP 22911087AJP S6472699 AJPS6472699 AJP S6472699A
Authority
JP
Japan
Prior art keywords
sic
speaker diaphragm
speaker
carbon
alumina
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.)
Pending
Application number
JP22911087A
Other languages
Japanese (ja)
Inventor
Nobuo Tomiyake
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.)
Sony Corp
Original Assignee
Sony 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 Sony CorpfiledCriticalSony Corp
Priority to JP22911087ApriorityCriticalpatent/JPS6472699A/en
Publication of JPS6472699ApublicationCriticalpatent/JPS6472699A/en
Pendinglegal-statusCriticalCurrent

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Abstract

PURPOSE:To obtain the speaker of high quality in which frequency characteristic is improved, by forming it only by SiC. CONSTITUTION:Carbon (isotropic graphite) 1 which is comparatively easy to be processed is processed in a prescribed shape and the prescribed thickness of SiC 2 is adhered on the carbon 1 of the prescribed shape by a CVD, whereby the carbon 1 is burnt to be removed. Consequently, a speaker diaphragm formed only by SiC 2 can easily be obtained. Since the acoustic velocity of the speaker diaphragm formed only by SiC is 11.16km/sec (density 3.21X10<3>kg/M<3> and Young's modulus 4.0X10<6>kgf/cm<2>), and it is superior to the acoustic velocity of alumina 9.4km/sec, the speaker having wider band and higher quality than the speaker diaphragm of fine ceramic, which consists only of alumina, can be obtained.
JP22911087A1987-09-121987-09-12Speaker diaphragm and its manufacturePendingJPS6472699A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP22911087AJPS6472699A (en)1987-09-121987-09-12Speaker diaphragm and its manufacture

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP22911087AJPS6472699A (en)1987-09-121987-09-12Speaker diaphragm and its manufacture

Publications (1)

Publication NumberPublication Date
JPS6472699Atrue JPS6472699A (en)1989-03-17

Family

ID=16886898

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP22911087APendingJPS6472699A (en)1987-09-121987-09-12Speaker diaphragm and its manufacture

Country Status (1)

CountryLink
JP (1)JPS6472699A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US5828567A (en)*1996-11-071998-10-27Rosemount Inc.Diagnostics for resistance based transmitter
US6859755B2 (en)2001-05-142005-02-22Rosemount Inc.Diagnostics for industrial process control and measurement systems
US6907383B2 (en)1996-03-282005-06-14Rosemount Inc.Flow diagnostic system
US6920799B1 (en)2004-04-152005-07-26Rosemount Inc.Magnetic flow meter with reference electrode
US6970003B2 (en)2001-03-052005-11-29Rosemount Inc.Electronics board life prediction of microprocessor-based transmitters
US7010459B2 (en)1999-06-252006-03-07Rosemount Inc.Process device diagnostics using process variable sensor signal
US7018800B2 (en)2003-08-072006-03-28Rosemount Inc.Process device with quiescent current diagnostics
US7046180B2 (en)2004-04-212006-05-16Rosemount Inc.Analog-to-digital converter with range error detection
US7085610B2 (en)1996-03-282006-08-01Fisher-Rosemount Systems, Inc.Root cause diagnostics
US7254518B2 (en)1996-03-282007-08-07Rosemount Inc.Pressure transmitter with diagnostics
US7290450B2 (en)2003-07-182007-11-06Rosemount Inc.Process diagnostics
US7321846B1 (en)2006-10-052008-01-22Rosemount Inc.Two-wire process control loop diagnostics
US7523667B2 (en)2003-12-232009-04-28Rosemount Inc.Diagnostics of impulse piping in an industrial process
US7590511B2 (en)2007-09-252009-09-15Rosemount Inc.Field device for digital process control loop diagnostics
US7623932B2 (en)1996-03-282009-11-24Fisher-Rosemount Systems, Inc.Rule set for root cause diagnostics
US7627441B2 (en)2003-09-302009-12-01Rosemount Inc.Process device with vibration based diagnostics
US7630861B2 (en)1996-03-282009-12-08Rosemount Inc.Dedicated process diagnostic device
US8898036B2 (en)2007-08-062014-11-25Rosemount Inc.Process variable transmitter with acceleration sensor
US9052240B2 (en)2012-06-292015-06-09Rosemount Inc.Industrial process temperature transmitter with sensor stress diagnostics
US9207670B2 (en)2011-03-212015-12-08Rosemount Inc.Degrading sensor detection implemented within a transmitter
US9602122B2 (en)2012-09-282017-03-21Rosemount Inc.Process variable measurement noise diagnostic

Citations (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS60219895A (en)*1984-04-161985-11-02Matsushita Electric Ind Co LtdManufacture of diaphragm for speaker
JPS61253366A (en)*1985-04-301986-11-11Mitsui Eng & Shipbuild Co LtdProduction of reaction sintering sic
JPS63172596A (en)*1987-01-091988-07-16Matsushita Electric Ind Co Ltd Manufacturing method of speaker diaphragm

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS60219895A (en)*1984-04-161985-11-02Matsushita Electric Ind Co LtdManufacture of diaphragm for speaker
JPS61253366A (en)*1985-04-301986-11-11Mitsui Eng & Shipbuild Co LtdProduction of reaction sintering sic
JPS63172596A (en)*1987-01-091988-07-16Matsushita Electric Ind Co Ltd Manufacturing method of speaker diaphragm

Cited By (21)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US7254518B2 (en)1996-03-282007-08-07Rosemount Inc.Pressure transmitter with diagnostics
US6907383B2 (en)1996-03-282005-06-14Rosemount Inc.Flow diagnostic system
US7630861B2 (en)1996-03-282009-12-08Rosemount Inc.Dedicated process diagnostic device
US7623932B2 (en)1996-03-282009-11-24Fisher-Rosemount Systems, Inc.Rule set for root cause diagnostics
US7085610B2 (en)1996-03-282006-08-01Fisher-Rosemount Systems, Inc.Root cause diagnostics
US5828567A (en)*1996-11-071998-10-27Rosemount Inc.Diagnostics for resistance based transmitter
US7010459B2 (en)1999-06-252006-03-07Rosemount Inc.Process device diagnostics using process variable sensor signal
US6970003B2 (en)2001-03-052005-11-29Rosemount Inc.Electronics board life prediction of microprocessor-based transmitters
US6859755B2 (en)2001-05-142005-02-22Rosemount Inc.Diagnostics for industrial process control and measurement systems
US7290450B2 (en)2003-07-182007-11-06Rosemount Inc.Process diagnostics
US7018800B2 (en)2003-08-072006-03-28Rosemount Inc.Process device with quiescent current diagnostics
US7627441B2 (en)2003-09-302009-12-01Rosemount Inc.Process device with vibration based diagnostics
US7523667B2 (en)2003-12-232009-04-28Rosemount Inc.Diagnostics of impulse piping in an industrial process
US6920799B1 (en)2004-04-152005-07-26Rosemount Inc.Magnetic flow meter with reference electrode
US7046180B2 (en)2004-04-212006-05-16Rosemount Inc.Analog-to-digital converter with range error detection
US7321846B1 (en)2006-10-052008-01-22Rosemount Inc.Two-wire process control loop diagnostics
US8898036B2 (en)2007-08-062014-11-25Rosemount Inc.Process variable transmitter with acceleration sensor
US7590511B2 (en)2007-09-252009-09-15Rosemount Inc.Field device for digital process control loop diagnostics
US9207670B2 (en)2011-03-212015-12-08Rosemount Inc.Degrading sensor detection implemented within a transmitter
US9052240B2 (en)2012-06-292015-06-09Rosemount Inc.Industrial process temperature transmitter with sensor stress diagnostics
US9602122B2 (en)2012-09-282017-03-21Rosemount Inc.Process variable measurement noise diagnostic

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