FR2256030B1 - - Google Patents

Info

Publication number
FR2256030B1
FR2256030B1 FR7346563A FR7346563A FR2256030B1 FR 2256030 B1 FR2256030 B1 FR 2256030B1 FR 7346563 A FR7346563 A FR 7346563A FR 7346563 A FR7346563 A FR 7346563A FR 2256030 B1 FR2256030 B1 FR 2256030B1
Authority
FR
France
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
FR7346563A
Other languages
French (fr)
Other versions
FR2256030A1 (en
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
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 Alcatel CIT SA filed Critical Alcatel CIT SA
Priority to FR7346563A priority Critical patent/FR2256030A1/fr
Publication of FR2256030A1 publication Critical patent/FR2256030A1/fr
Application granted granted Critical
Publication of FR2256030B1 publication Critical patent/FR2256030B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/165—Particles in a matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/30—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being formed of particles, e.g. chips, granules, powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Building Environments (AREA)
  • Laminated Bodies (AREA)
FR7346563A 1973-12-27 1973-12-27 Composite matl. for acoustic damping under water - comprise metal dispersed in polymerised elastomeric matrix for enhanced reflective damping Granted FR2256030A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7346563A FR2256030A1 (en) 1973-12-27 1973-12-27 Composite matl. for acoustic damping under water - comprise metal dispersed in polymerised elastomeric matrix for enhanced reflective damping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7346563A FR2256030A1 (en) 1973-12-27 1973-12-27 Composite matl. for acoustic damping under water - comprise metal dispersed in polymerised elastomeric matrix for enhanced reflective damping

Publications (2)

Publication Number Publication Date
FR2256030A1 FR2256030A1 (en) 1975-07-25
FR2256030B1 true FR2256030B1 (da) 1978-03-24

Family

ID=9129771

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7346563A Granted FR2256030A1 (en) 1973-12-27 1973-12-27 Composite matl. for acoustic damping under water - comprise metal dispersed in polymerised elastomeric matrix for enhanced reflective damping

Country Status (1)

Country Link
FR (1) FR2256030A1 (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9108447D0 (en) * 1991-04-19 1991-06-05 Rockwell Automotive Body Syst Vehicle door latches
FR2736459B1 (fr) * 1995-07-07 1997-08-14 Renault Procede de fabrication d'un matelas attenuateur de bruit

Also Published As

Publication number Publication date
FR2256030A1 (en) 1975-07-25

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse