JPS5243711A - Sound absorbing material and its unit having excellent weather resista nce, pressure resisting strength and heat resistance - Google Patents

Sound absorbing material and its unit having excellent weather resista nce, pressure resisting strength and heat resistance

Info

Publication number
JPS5243711A
JPS5243711A JP50119424A JP11942475A JPS5243711A JP S5243711 A JPS5243711 A JP S5243711A JP 50119424 A JP50119424 A JP 50119424A JP 11942475 A JP11942475 A JP 11942475A JP S5243711 A JPS5243711 A JP S5243711A
Authority
JP
Japan
Prior art keywords
unit
absorbing material
sound absorbing
heat resistance
pressure resisting
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
JP50119424A
Other languages
Japanese (ja)
Inventor
Sadaya Chino
Masahide Mitani
Toshio Hirooka
Yoshitaka Tomiyama
Masaaki Izawa
Kaneo Iwasaki
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.)
JAPANESE NATIONAL RAILWAYS<JNR>
Japan National Railways
Fine Sinter Co Ltd
Nippon Kokuyu Tetsudo
Original Assignee
JAPANESE NATIONAL RAILWAYS<JNR>
Japan Powder Metallurgy Co Ltd
Japan National Railways
Nippon Kokuyu Tetsudo
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 JAPANESE NATIONAL RAILWAYS<JNR>, Japan Powder Metallurgy Co Ltd, Japan National Railways, Nippon Kokuyu Tetsudo filed Critical JAPANESE NATIONAL RAILWAYS<JNR>
Priority to JP50119424A priority Critical patent/JPS5243711A/en
Publication of JPS5243711A publication Critical patent/JPS5243711A/en
Pending legal-status Critical Current

Links

Landscapes

  • Powder Metallurgy (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Building Environments (AREA)

Abstract

PURPOSE: To develop a sound absorbing material and its unit having excellent pressure resisting strength against wind pressure, etc., weather resistance and incombustibility which can sufficiently absorb noise generated from engines of high speed trains and cars.
COPYRIGHT: (C)1977,JPO&Japio
JP50119424A 1975-10-03 1975-10-03 Sound absorbing material and its unit having excellent weather resista nce, pressure resisting strength and heat resistance Pending JPS5243711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50119424A JPS5243711A (en) 1975-10-03 1975-10-03 Sound absorbing material and its unit having excellent weather resista nce, pressure resisting strength and heat resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50119424A JPS5243711A (en) 1975-10-03 1975-10-03 Sound absorbing material and its unit having excellent weather resista nce, pressure resisting strength and heat resistance

Publications (1)

Publication Number Publication Date
JPS5243711A true JPS5243711A (en) 1977-04-06

Family

ID=14761100

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50119424A Pending JPS5243711A (en) 1975-10-03 1975-10-03 Sound absorbing material and its unit having excellent weather resista nce, pressure resisting strength and heat resistance

Country Status (1)

Country Link
JP (1) JPS5243711A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5390113A (en) * 1977-01-20 1978-08-08 Nippon Dia Clevite Co Porous sintered material with excellent air permeability
JPS5458401A (en) * 1977-10-19 1979-05-11 Japan National Railway Sound absorbing plate structure having superior weather resistance and mechanical strength with preferable drainage
JPS5466504U (en) * 1977-10-19 1979-05-11
JPS54109009A (en) * 1978-02-15 1979-08-27 Kouichi Suematsu Granule iron ingot having fused contact portions
JPS558477A (en) * 1978-07-05 1980-01-22 N D C Kk Production of porous body of aluminum or its alloy
JPS57202281U (en) * 1981-06-19 1982-12-23
JPS6168108U (en) * 1985-08-15 1986-05-10
JPS61140138U (en) * 1985-02-22 1986-08-30

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444620A (en) * 1944-06-23 1948-07-06 Brush Dev Co Damping means for mechanical vibratory devices
JPS4825854A (en) * 1971-08-10 1973-04-04
JPS4945832B1 (en) * 1968-01-19 1974-12-06
JPS5091505A (en) * 1973-12-14 1975-07-22

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444620A (en) * 1944-06-23 1948-07-06 Brush Dev Co Damping means for mechanical vibratory devices
JPS4945832B1 (en) * 1968-01-19 1974-12-06
JPS4825854A (en) * 1971-08-10 1973-04-04
JPS5091505A (en) * 1973-12-14 1975-07-22

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5390113A (en) * 1977-01-20 1978-08-08 Nippon Dia Clevite Co Porous sintered material with excellent air permeability
JPS5458401A (en) * 1977-10-19 1979-05-11 Japan National Railway Sound absorbing plate structure having superior weather resistance and mechanical strength with preferable drainage
JPS5466504U (en) * 1977-10-19 1979-05-11
JPS54109009A (en) * 1978-02-15 1979-08-27 Kouichi Suematsu Granule iron ingot having fused contact portions
JPS558477A (en) * 1978-07-05 1980-01-22 N D C Kk Production of porous body of aluminum or its alloy
JPS57202281U (en) * 1981-06-19 1982-12-23
JPS61140138U (en) * 1985-02-22 1986-08-30
JPS6168108U (en) * 1985-08-15 1986-05-10

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