SI9520050A - Vibration and sound absorber - Google Patents

Vibration and sound absorber Download PDF

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Publication number
SI9520050A
SI9520050A SI9520050A SI9520050A SI9520050A SI 9520050 A SI9520050 A SI 9520050A SI 9520050 A SI9520050 A SI 9520050A SI 9520050 A SI9520050 A SI 9520050A SI 9520050 A SI9520050 A SI 9520050A
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Slovenia
Prior art keywords
metal
sheet
layer
layers
viscoplastic
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SI9520050A
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Slovenian (sl)
Inventor
Bohumil Volf
Guenter Valient
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Zdb A S
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Publication of SI9520050A publication Critical patent/SI9520050A/en

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    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B17/00—Wheels characterised by rail-engaging elements
    • B60B17/0006—Construction of wheel bodies, e.g. disc wheels
    • B60B17/0013—Construction of wheel bodies, e.g. disc wheels formed by two or more axially spaced discs
    • B60B17/0017—Construction of wheel bodies, e.g. disc wheels formed by two or more axially spaced discs with insonorisation means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/30—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium
    • F16F9/306—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium of the constrained layer type, i.e. comprising one or more constrained viscoelastic layers
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/05—5 or more layers
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption
    • 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
    • B32B2311/00—Metals, their alloys or their compounds
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/10—Trains

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Vibration Prevention Devices (AREA)
  • Laminated Bodies (AREA)
  • Vibration Dampers (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The invention concerns a vibration and sound absorber for reducing the dynamic and sound effects in mechanical assemblies to which it is secured by snap rings and rigid rings, screws or rivets or by adhesion. The absorber is characterized in that it is formed from bonded layers, namely of more than one layer of a viscoplastic compound (4), a layer of expanded sheet metal (2) and at least one further layer of conventional sheet metal (3) or expanded sheet metal (2). The individual metal sheets are separated from one another by a layer of the viscoplastic compound (4) and the outer surfaces of the absorber (1) are formed either by a layer of the viscoplastic compound (4) or a metal sheet (2, 3). The expanded metal sheet (2) in the absorber (1) can be replaced by a metal grid (20).

Description

Dušilnik nihanj in zvokaOscillator and sound attenuator

Področje tehnikeThe field of technology

Zadevna tehnična rešitev se nanaša na zgradbo in sestavo dušilnika nihanj in zvoka za zmanjšanje dinamičnih in zvočnih učinkov pri strojnih sklopih, ki ustvarjajo določeno nihalno energijo, zlasti pri kolesih timičnih vozil.The technical solution in question relates to the structure and composition of the oscillator and sound attenuator in order to reduce the dynamic and acoustic effects of the mechanical assemblies generating certain oscillatory energy, in particular in the wheels of thymic vehicles.

Stanje tehnikeThe state of the art

Pri gibajočih se strojnih sklopih, h katerim spadajo tudi kolesa timičnih vozil, pride do nihanja gradnikov, pri Čemer se nihanja prenašajo in tvorijo valovno gibanje. Vsak nihajoč sistem ustvarja določeno skupno energijo nihanj, pri čemer so dinamični vplivi sistema tem večji, čim večja je ta energija, pri čemer se posledično poleg tega ustvarja tudi hrup različnih frekvenc, ki je znan kot zvok.Moving machine assemblies, which include the wheels of thymic vehicles, result in oscillations of the building blocks, whereby the oscillations are transmitted and produce wave motion. Each oscillating system generates a certain total energy of oscillations, the greater the dynamic effects of the system, the higher the energy, resulting in the noise of different frequencies, known as sound.

Za zmanjšanje skupne energije nihanj se uporablja dušilnike, ki so zasnovani kot telesa, povezana z glavnim izvorom nihanj s pomočjo ojačilnih obročev, vijakov, kovic ali lepila.To reduce the total energy of the oscillations, dampers designed as bodies connected to the main source of oscillations by means of reinforcing rings, screws, rivets or glue are used.

Do sedaj uporabljeni dušilniki nihanj in zvoka za kolesa timičnih vozil so zasnovani iz običajne pločevine ali pločevine, opremljene z oslojitvijo, ki duši nihanja. Druge izvedbe dušilnikov so zasnovane kot pločevine z vmes ležečimi gumijastimi plastmi, ali pa kot absorbirajoči segmenti, ki so zasnovani iz kovinskih lamel in plastičnih mas. Za povečanje dušilnega učinka se v pločevino pogostokrat izvede posebej oblikovane ureze.The oscillation and sound dampers used so far for the wheels of thymic vehicles are designed from conventional sheet metal or sheet equipped with a vibration damping release. Other designs of dampers are designed as sheets with interlayer rubber layers, or as absorbent segments formed of metal blades and plastics. In order to increase the damping effect, specially shaped cuts are often made into the sheet.

Izvedbeni primer takšnega dušilnika je prikazan npr. v patentih EP-A-0 278 248 ali EP-A-0An exemplary example of such a damper is shown e.g. in EP-A-0 Patents 278 248 or EP-A-0

510 974, pri čemer so dušilniki tvorjeni iz različnih kombinacij običajne pločevine in viskoplastičnih mas, po potrebi pa še z adhezijskimi plastmi.510 974, wherein the dampers are formed from various combinations of conventional sheet metal and viscoplastic masses, and, if necessary, with adhesive layers.

Znani so tudi dušilniki po patentu US-A-4 367 255, pri čemer je na masni del, ki ga je potrebno dušiti, z vijaki pritrjen dušilnik, kije sestavljen iz ekspandirane kovinske pločevine in iz ene ali dveh plasti iz elastomera ali kakšne druge viskoelastične mase.Also known are dampers according to US-A-4 367 255, whereby a damper consisting of expanded metal sheet and one or two layers of elastomer or other viscoelastic is attached to the mass part to be damped. masses.

Pomanjkljivost tega dušilnika leži v tem, da ne zagotavlja dušenja v celotnem frekvenčnem pasu nihanj in da dušenje traja dolgo. Izdelava takšnega dušilnika je v glavnem zahtevna, stroški pa so pogosto neupravičeni glede na dosežene rezultate. To pomeni, da se dinamične učinke sistema odpravi le nezadovoljivo, kar skrajša življensko dobo gradnikov. Če se uporabi gumo, pride tudi do staranja gume in s tem do izgube elastičnosti.The disadvantage of this damper is that it does not provide damping over the entire frequency band of oscillations and that damping takes a long time. The production of such a damper is generally demanding, and the costs are often ineligible for results. This means that the dynamic effects of the system are eliminated only unsatisfactory, which shortens the life span of the building blocks. If rubber is used, it will also cause the rubber to age and thus lose elasticity.

Bistvo izumaThe essence of the invention

Zgoraj navedene pomanjkljivosti seje v znatni meri odpravilo z dušilnikom nihanj in zvoka za kolesa timičnih vozil, ki v bistvu sestoji v tem, daje zasnovan iz skupaj povezanih plasti, in sicer iz več kot ene plasti viskoplastične mase, iz plasti ekspandirane pločevine, vsaj iz ene nadaljnje plasti običajne pločevine ali pločevine iz ekspandirane kovine.Posamične kovinske plasti so medsebojno ločene s plastjo viskoplastične mase, zunanje ploskve dušilnika nihanj in zvoka pa so bodisi zasnovane iz plasti viskoplastične mase ali pločevine, lahko pa se vsako plast pločevine iz ekspandirane kovine v dušilniku nihanj in zvoka nadomesti s kovinsko mrežo.The aforementioned disadvantages of the session have been substantially eliminated by a thymic vehicle vibration dampener, essentially consisting of being formed of jointly connected layers of more than one layer of visclastic mass, of expanded sheet metal, of at least one further layers of ordinary sheet metal or expanded metal sheet. The individual metal layers are separated from each other by a layer of viscoplastic mass, and the outer surfaces of the oscillator and sound attenuator are either formed from a layer of viscoplastic mass or sheet, and each sheet of expanded metal sheet can be contained in the oscillation damper. and replace the sound with a metal mesh.

Posamezne kovinske plasti so površinsko zaščitene proti koroziji ali neposredno izdelane iz proti koroziji odpornega materiala. Zadevni dušilnik lahko obsega obliko okrogle plošče, prstanaste ploskve, traku ali poljubno drugo obliko, ki ustreza obliki nihajočega telesa. H kolesu timičnega vozila, ki je značilno po veliki amplitudi nihanj, je dušilnik pritijen z varovalnimi in ojačilnimi obroči, vijaki, kovicami ali z lepljenjem.Individual metal layers are surface protected against corrosion or directly made of corrosion resistant material. The damper in question may comprise a circular plate, a ring face, a strip, or any other shape appropriate to the shape of the oscillating body. Typically, the throttle wheel, which is characterized by a large amplitude of oscillations, is attached to the damper by means of retaining and reinforcing rings, screws, rivets or gluing.

Prednost tega dušilnika nihanj in zvoka sestoji v tem, da duši nihanja v širokem frekvenčnem pasu in da pride do dušenja nihanj v kratkem obdobju, kar bistveno zmanjša celotno nihalno energijo v strojnem sklopu. Izkazalo se je, da se z nižjimi amplitudami nihanj se doseže zmanjšanje dinamičnih učinkov, podaljša življensko dobo gradnikov in zmanjša nivo zvoka. Nadaljnja prednost dušilnika je, da se da njegovo obliko in pritrditev prirediti obliki nihajočega dela in da se ga tudi naknadno da vgraditi v že uporabljena kolesa timičnih vozil.The advantage of this oscillator and sound attenuator is that it suppresses oscillations in a wide frequency band and that damping occurs in a short period of time, significantly reducing the total oscillatory energy in the machine assembly. It turns out that lower oscillation amplitudes result in a decrease in dynamic effects, extend the life of the building blocks and reduce the sound level. A further advantage of the throttle is that its shape and attachment can be adapted to the shape of the oscillating part and that it can also be retrofitted to the wheels of the used vehicles.

Pregled slik na skicahView the pictures in the sketches

Na slikah 1, 2, 3 in 4 so v prerezu predstavljene različne izvedbe dušilnika nihanj in zvoka, ki je sestavljen iz plasti pločevine iz ekspandirane kovine, običajne pločevine in viskoplastičnih mas. Na sliki 5 je predstavljena osnovna oblika pločevine iz ekspandirane kovine in značilnosti njenih izmer. Na sl. 6, 7 in 8 so predstavljene različne možnosti uporabe in variante pritrditve dušilnika nihanj in zvoka na kolo timičnega vozila.Figures 1, 2, 3 and 4 show in cross section various variations of the oscillator and sound attenuator consisting of layers of sheet metal of expanded metal, conventional sheet metal and viscoplastic masses. Figure 5 shows the basic shape of an expanded metal sheet and the characteristics of its dimensions. In FIG. 6, 7 and 8 present various applications and options for attaching a vibration damper to the wheel of a thymic vehicle.

Primeri izvedbe izumaEmbodiments of the invention

Primer 1Example 1

Na sl. 1 predstavljen dušilnik nihanj in zvoka sestoji iz plasti pločevine 2 iz ekspandirane kovine, dveh plasti viskoplastične mase 4 in dveh plasti običajne pločevine 3, ki sočasno tvorita zunanja dela dušilnika 1. Viskoplastična masa 4 ločuje s kovicami medsebojno povezani plasti 2, 3 pločevine. Pločevina 2 iz ekspandirane kovine obsega pri tem osnovno obliko, ki je predstavljena na sl. 5, in katere velikost je značilna po dolžini A in širini C pentelj, širini ekspandiranja B in debelini pločevine D. Na sl. 6 je predstavljena pritrditev zadevnega dušilnika 1 na kolo s pomočjo varovalnega in ojačilnega obroča 10.In FIG. 1, the represented oscillator of sound and sound consists of layers of sheet metal 2 of expanded metal, two layers of viscoplastic mass 4 and two layers of ordinary sheet 3, which simultaneously form the outer parts of silencer 1. The viscoplastic mass 4 separates the interconnected layers 2, 3 of sheet metal. The expanded metal sheet 2 comprises the basic form shown in FIG. 5, and the size of which is characterized by the length A and the width C of the loops, the width of the expansion B and the thickness of the sheet D. In FIG. 6 shows the attachment of the silencer in question 1 to the wheel by means of a retaining and reinforcing ring 10.

Primer 2Example 2

Na sl. 2 predstavljen dušilnik nihanj in zvoka sestoji iz plasti pločevine 2 iz ekspandirane kovine in plasti običajne pločevine 3, ki sta medsebojno povezani z vijaki in hkrati ločeni druga od druge s plastjo viskoplastične mase 4. Zunanja ploskev dušilnika 1 je zasnovana iz druge plasti viskoplastične mase 4, medtem ko je druga zunanja ploskev zasnovana iz plasti običajne pločevine 3. Pločevina 2 iz ekspandirane kovine zavzame na sl. 5 prikazano obliko, medtem ko je na sl. 7 prikazana pritrditev dušilnika 1 na kolo s pomočjo vijakov 11 z vgrezno glavo.In FIG. 2, the oscillation and sound silencer presented consists of a sheet metal sheet 2 of expanded metal and a layer of a conventional sheet metal 3, which are interconnected by screws and simultaneously separated from each other by a layer of viscoplastic mass 4. The outer surface of silencer 1 is formed from another layer of viscoplastic mass 4 , while the second outer surface is formed from the layer of a conventional sheet 3. The expanded metal sheet 2 occupies in FIG. 5 shows the shape while in FIG. 7 shows the attachment of the damper 1 to the wheel by means of screws 11 with a recess.

Primer 3Example 3

Na sl. 3 prikazan dušilnik 1 nihanj in zvoka sestoji iz dveh plasti kovinske mreže 20, treh plasti viskoplastične mase 4 in ene plasti običajne pločevine 3, ki tvori zunanjo ploskev dušilnika 1. Dve plasti viskoplastične mase 4 ločujeta drugo od druge skupaj povezani plasti kovinske mreže 20 in običajne pločevine 3, tretja pa tvori drugo zunanjo ploskev dušilnikaIn FIG. 3 shows the oscillator 1 of oscillations and sound consists of two layers of metal mesh 20, three layers of viscoplastic mass 4 and one layer of ordinary sheet 3 forming the outer surface of silencer 1. Two layers of viscoplastic mass 4 separate from each other the jointly connected layers of metal mesh 20 and normal plates 3, and the third forms the second outer surface of the damper

1. Na sl. 7 je zatem predstavljena pritrditev dušilnika 1 na kolo z vijaki 12, pri čemer tvorijo matice sestavni del kolesa.1. In FIG. 7, the attenuation of the damper 1 to the wheel with screws 12 is then shown, the nuts forming an integral part of the wheel.

Primer 4Example 4

Na sl. 4 predstavljen dušilnik nihanj in zvoka sestoji iz dveh plasti pločevine 2 iz ekspandirane kovine in dveh plasti običajne pločevine 3, ki hkrati tvorita zunanji ploskvi dušilnika 1. Posamične plasti pločevine so zatem medsebojno ločene s plastmi viskoplastične mase 4. Pločevina 2 iz ekspandirane kovine zavzame na sl. 5 prikazano obliko, medtem ko je na sl. 8 prikazana pritrditev dušilnika 1 z lepljenjem in spenjanjem med kolesnimi gradniki.In FIG. 4, the represented oscillator of sound and sound consists of two layers of sheet metal 2 of expanded metal and two layers of ordinary sheet metal 3, which simultaneously form the outer surfaces of silencer 1. The individual layers of sheet are then separated from each other by layers of viscoplastic mass 4. The sheet 2 of expanded metal takes on FIG. 5 shows the shape while in FIG. 8 shows the attaching of the damper 1 by gluing and clamping between the wheel components.

Industrijska uporabnostIndustrial applicability

Dušilnik nihanj in zvoka je zasnovan za kolesa timičnih vozil, vendar se ga lahko na prednosten način uporabi tudi pri zobniških kolesih, zavornih kolutih, ležajih, tečajih in podobnih gradnikih, ki obsegajo veliko celotno energijo nihanj.The vibration and sound attenuator is designed for thymic vehicle wheels, but can also be advantageously used in gear wheels, brake discs, bearings, hinges, and similar building blocks that comprise a large total of oscillation energy.

Claims (5)

Dušilnik nihanj in zvoka za zmanjšanje dinamičnih vplivov koles timičnih vozil, na katere je pritrjen s pomočjo varovalnih in ojačilnih obročev, vijakov, kovic ali z lepljenjem, pri čemer je zasnovan iz medsebojno povezanih plasti, značilen po tem, da sestoji iz več kot ene plasti viskoplastične mase (4), vsaj ene plasti pločevine (Oscillation and sound attenuator for reducing the dynamic effects of the wheels of thymic vehicles to which it is secured by means of retaining and reinforcing rings, screws, rivets or gluing, being formed of interconnected layers, characterized in that it consists of more than one layer viscoplastic masses (4), at least one layer of sheet metal ( 2) iz ekspandirane kovine ali kovinske mreže (20) in ene ali dveh plasti običajne pločevine (2) expanded metal or metal mesh (20) and one or two layers of ordinary sheet metal ( 3), ki tvori eno ali obe zunanji ploskvi dušilnika (1), pri čemer so posamične kovinske plasti pločevine (2, 3) medsebojno vedno ločene s plastjo viskoplastične mase (3) forming one or both outer surfaces of the damper (1), wherein the individual metal layers of the sheet (2, 3) are always separated from each other by a layer of viscoplastic mass (3). 4).4). ZDB a.s.ZDB a.s. PATENTNA PISARNA, d.o&i:PATENT OFFICE, d.o & i: LJUBLJANA, ČOPOVLJUBLJANA, CHOPOV 25527PP0.WP-IX/96-Iv25527PP0.WP-IX / 96-Iv PovzetekSummary Izum se nanaša na dušilnik nihanj in zvoka za zmanjšanje dinamičnih in zvočnih vplivov koles timičnih vozil, na katere je pritrjen s pomočjo varovalnih in ojačilnih obročev,The invention relates to a vibration and sound attenuator for reducing the dynamic and acoustic effects of the wheels of thymic vehicles, to which it is attached by means of safety and reinforcing rings, 5 vijakov, kovic ali z lepljenjem. Dušilnik je karakterističen po tem, da je zasnovan iz skupaj povezanih plasti, in sicer iz več kot ene plasti viskoplastične mase (4), vsaj ene plasti pločevine (2) iz ekspandirane kovine ali kovinske mreže (20) in ene ali dveh plasti običajne pločevine (3), ki tvori eno ali obe zunanji ploskvi dušilnika (1). Posamične kovinske plasti pločevine so pri tem medsebojno vedno ločene s plastjo viskoplastične mase (4). Pločevino 10 (2) iz ekspandirane kovine v dušilniku (1) se da kadarkoli nadomestiti s kovinsko mrežo (20).5 screws, rivets or gluing. The damper is characterized in that it is formed of jointly connected layers of more than one layer of viscoplastic mass (4), at least one layer of sheet (2) of expanded metal or metal mesh (20) and one or two layers of ordinary sheet metal (3) forming one or both outer faces of the damper (1). The individual metal layers of the sheet are always separated from each other by a layer of viscoplastic mass (4). The expanded metal sheet 10 (2) in the damper (1) can be replaced at any time by a metal mesh (20).
SI9520050A 1994-04-06 1995-04-06 Vibration and sound absorber SI9520050A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ94792A CZ285423B6 (en) 1994-04-06 1994-04-06 Vibration damper

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SI9520050A true SI9520050A (en) 1997-04-30

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AT (1) AT406098B (en)
CZ (1) CZ285423B6 (en)
DE (2) DE19580284D2 (en)
HU (1) HU221723B1 (en)
PL (1) PL316649A1 (en)
SI (1) SI9520050A (en)
SK (1) SK127096A3 (en)
WO (1) WO1995027975A1 (en)

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DE19937462A1 (en) * 1999-08-07 2001-02-08 Volkswagen Ag Sound absorbing and sound absorbing coating of a component that tends to vibrate
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DE19580284C1 (en) 1998-10-22
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PL316649A1 (en) 1997-02-03
CZ285423B6 (en) 1999-08-11
HU9602716D0 (en) 1996-11-28
HUT76116A (en) 1997-06-30
SK127096A3 (en) 1997-08-06
HU221723B1 (en) 2002-12-28
WO1995027975A1 (en) 1995-10-19
ATA903595A (en) 1999-06-15
AT406098B (en) 2000-02-25

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