EP0311797A2 - Sound damping covering element - Google Patents

Sound damping covering element Download PDF

Info

Publication number
EP0311797A2
EP0311797A2 EP19880114906 EP88114906A EP0311797A2 EP 0311797 A2 EP0311797 A2 EP 0311797A2 EP 19880114906 EP19880114906 EP 19880114906 EP 88114906 A EP88114906 A EP 88114906A EP 0311797 A2 EP0311797 A2 EP 0311797A2
Authority
EP
European Patent Office
Prior art keywords
layer
sound
cover element
element according
absorbing cover
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.)
Granted
Application number
EP19880114906
Other languages
German (de)
French (fr)
Other versions
EP0311797B1 (en
EP0311797A3 (en
Inventor
Peter Dr.-Ing. Baur
Detlef Dr. Rer. Nat. Guhl
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0311797A2 publication Critical patent/EP0311797A2/en
Publication of EP0311797A3 publication Critical patent/EP0311797A3/en
Application granted granted Critical
Publication of EP0311797B1 publication Critical patent/EP0311797B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • G10K11/168—Plural layers of different materials, e.g. sandwiches

Definitions

  • the invention relates to a sound-absorbing cover element according to the generic preamble of the main claim.
  • a covering hood is known as such a covering element, which consists of a single-layer shell made of thermoplastic or thermosetting material. The insulation capacity of such a shell is low.
  • the aim of the invention is to provide a sound-absorbing cover element which, on the other hand, enables significantly better sound insulation.
  • the drawing shows a schematic section of a sound-absorbing cover element.
  • a soundproofing cover element 10 is shown schematically, which is designed here as a cylinder head cover for internal combustion engines.
  • the cover element 10 has a three-layer sandwich structure and consists of a core layer 11, which has an outer layer 12 on its outside and an inner layer 14 on its inside.
  • the outer layer 11 and / or the inner layer 13 consists of a thermosetting or thermoplastic plastic or instead of a e.g. deep-drawn metal foil.
  • the core layer 11 is formed from an elastic layer with high damping capacity and consists here of a rubber filled with fillers.
  • the term "rubber” includes materials of this type made of synthetic rubber, rubber or plastic, insofar as they have a rubber-elastic behavior that is specific to rubber.
  • the rubber as part of the core layer 11 is designed to be very soft. It has a very low Shore A hardness.
  • the filler has a high density, for example in the order of up to 3.8 g / cm3.
  • the filler consists of barium sulfate. It has been shown that a core layer 11 designed in this way enables very good sound insulation.
  • the cover element 10 can be produced in the compression or injection molding process, using a tool provided with plunging edges (so-called engagement tool), which allows the three layers 11, 12 and 13 of the sandwich to be applied one after the other.
  • the core layer 11 is first produced.
  • the outer layer 12 and inner layer 13 are then applied. If they consist of thermoplastic material, they are e.g. sprayed on or in foil form, e.g. in the form of thermoformed films.
  • the cover element 10 in particular as a cylinder head cover for internal combustion engines, brings about very good sound insulation.
  • the cover element 10 is intended for other noise-reducing purposes, e.g. as a cover in the area of the oil pan or at other points in the engine of an internal combustion engine. All other applications for the sound-absorbing cover element 10 are also within the scope of the invention.

Abstract

A sound-damping covering element has a three-layer sandwich construction with a core layer of elastic material, filled with a high-density filler, and with an inner layer on the inside of the core layer and with an outer layer on the outside of the core layer. The inner layer and the outer layer consist of duroplastic or thermoplastic material. The covering element is notable for high sound-damping capability and is particularly suitable as a cylinder head cap for internal combustion engines. <IMAGE>

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem schalldämmenden Abdeck­element nach dem gattungsbildenden Oberbegriff des Haupt­anspruchs. Als derartiges Abdeckelement ist eine Abdeck­haube bekannt, die als einschichtige Schale aus thermoplastischem oder duroplastischem Material besteht. Das Dämmvermögen einer solchen Schale ist gering. Ziel der Erfindung ist es, ein schalldämmendes Abdeckelement zu schaffen, das dem­gegenüber eine wesentlich bessere Schalldämmung ermöglicht.The invention relates to a sound-absorbing cover element according to the generic preamble of the main claim. A covering hood is known as such a covering element, which consists of a single-layer shell made of thermoplastic or thermosetting material. The insulation capacity of such a shell is low. The aim of the invention is to provide a sound-absorbing cover element which, on the other hand, enables significantly better sound insulation.

Vorteile der ErfindungAdvantages of the invention

Bei dem erfindungsgemäßen schalldämmenden Abdeckelement mit den kennzeichnenden Merkmalen des Hauptanspruchs ist vor allem durch die ein großes Dämpfungsvermögen aufwei­sende elastische Schicht eine erheblich verbesserte Schalldämmung erreichbar. Mit den in den Ansprüchen 2 - 12 aufgeführten Maßnahmen sowie den Verfahrensmerkmalen in den Ansprüchen 13 - 15 sind vorteilhafte Weiterbildungen und Verbesserungen des Abdeckelements nach dem Hauptanspruch erzielbar.In the sound-absorbing cover element according to the invention with the characterizing features of the main claim, a considerably improved sound insulation can be achieved, in particular, by the elastic layer having a large damping capacity. With the measures listed in claims 2-12 and the method features in claims 13-15, advantageous developments and improvements of the cover element can be achieved according to the main claim.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Die Zeichnung zeigt einen schematischen Schnitt eines schalldämmenden Abdeckelementes.An embodiment of the invention is shown in the drawing and explained in more detail in the following description. The drawing shows a schematic section of a sound-absorbing cover element.

Beschreibung des AusführungsbeispielsDescription of the embodiment

In der Zeichnung ist schematisch ein schalldämmendes Abdeckelement 10 gezeigt, das hier als Zylinderkopfhaube für Brennkraftmaschinen ausgebildet ist. Das Abdeckele­ment 10 hat einen dreischichtigen Sandwichaufbau und be­steht aus einer Kernschicht 11, die auf ihrer Außenseite eine Außenschicht 12 und auf ihrer Innenseite eine Innen­schicht 14 aufweist.In the drawing, a soundproofing cover element 10 is shown schematically, which is designed here as a cylinder head cover for internal combustion engines. The cover element 10 has a three-layer sandwich structure and consists of a core layer 11, which has an outer layer 12 on its outside and an inner layer 14 on its inside.

Die Außenschicht 11 und/oder die Innenschicht 13 besteht aus einem duroplastischen oder thermoplastischen Kunst­stoff oder statt dessen aus einer z.B. tiefgezogenen Metallfolie.The outer layer 11 and / or the inner layer 13 consists of a thermosetting or thermoplastic plastic or instead of a e.g. deep-drawn metal foil.

Die Kernschicht 11 ist aus einer elastischen Schicht mit großem Dämpfungsvermögen gebildet und besteht hier aus einem mit Füllstoffen gefüllten Gummi. Der Begriff "Gummi" schließt Materialien dieser Art aus Kunstgummi, Kautschuk oder Kunststoff ein, soweit diese ein dem Gummi eigenes gummielastisches Verhalten haben. Der Gummi als Teil der Kernschicht 11 ist sehr weich ausgelegt. Er hat eine sehr niedrige Shore A Härte. Der Füllstoff weist eine große Dichte auf, z.B. in der Größenordnung bis zu 3,8 g/cm³. Der Füllstoff besteht hier aus Bariumsulfat. Es hat sich gezeigt, daß eine so gestaltete Kernschicht 11 eine sehr gute Schalldämmung ermöglicht.The core layer 11 is formed from an elastic layer with high damping capacity and consists here of a rubber filled with fillers. The term "rubber" includes materials of this type made of synthetic rubber, rubber or plastic, insofar as they have a rubber-elastic behavior that is specific to rubber. The rubber as part of the core layer 11 is designed to be very soft. It has a very low Shore A hardness. The filler has a high density, for example in the order of up to 3.8 g / cm³. The filler consists of barium sulfate. It has been shown that a core layer 11 designed in this way enables very good sound insulation.

Das Abdeckelement 10 ist bei Verwendung heißhärtender Materialien im Preß- oder Spritzgießverfahren herstellbar, wobei man sich eines mit Tauchkanten versehenen Werkzeuges (sog. Eingriffswerkzeug) bedient, welches es gestattet, die drei Schichten 11, 12 und 13 des Sandwiches nach­einander aufzubringen.When using thermosetting materials, the cover element 10 can be produced in the compression or injection molding process, using a tool provided with plunging edges (so-called engagement tool), which allows the three layers 11, 12 and 13 of the sandwich to be applied one after the other.

Bei einer anderen Methode wird zunächst die Kernschicht 11 hergestellt. Danach werden die Außenschicht 12 und Innenschicht 13 aufgebracht. Bestehen diese aus thermo­plastischem Kunststoff, so werden diese z.B. aufgespritzt oder in Folienform, z.B. in Form von Tiefziehfolien, aufgebracht.In another method, the core layer 11 is first produced. The outer layer 12 and inner layer 13 are then applied. If they consist of thermoplastic material, they are e.g. sprayed on or in foil form, e.g. in the form of thermoformed films.

Das Abdeckelement 10, insbesondere als Zylinderkopfhaube für Brennkraftmaschinen, bewirkt eine sehr gute Schall­dämmung. Bei einem anderen, nicht gezeigten Ausführungs­beispiel ist das Abdeckelement 10 für andere geräusch­dämmende Zwecke bestimmt, z.B. als Abdeckung im Bereich der Ölwanne oder an anderen Stellen des Motors einer Brennkraftmaschine. Auch alle übrigen Anwendungen für das schalldämmende Abdeckelement 10 liegen im Rahmen der Erfindung.The cover element 10, in particular as a cylinder head cover for internal combustion engines, brings about very good sound insulation. In another embodiment, not shown, the cover element 10 is intended for other noise-reducing purposes, e.g. as a cover in the area of the oil pan or at other points in the engine of an internal combustion engine. All other applications for the sound-absorbing cover element 10 are also within the scope of the invention.

Claims (15)

1. Schalldämmendes Abdeckelement, insbesondere Abdeck­haube für Brennkraftmaschinen, gekennzeich­net durch eine Innenschicht (13), die auf ihrer Außenseite eine elastische Schicht (11) mit großem Dämpfungsvermögen aufweist.1. Sound-insulating cover element, in particular cover for internal combustion engines, characterized by an inner layer (13) which has an elastic layer (11) on its outside with great damping capacity. 2. Schalldämmendes Abdeckelement nach Anspruch 1, dadurch gekennzeichnet, daß die elastische Schicht (11) aus einem mit Füllstoffen gefüllten Gummi gebildet ist.2. Sound-insulating cover element according to claim 1, characterized in that the elastic layer (11) is formed from a rubber filled with fillers. 3. Schalldämmendes Abdeckelement nach Anspruch 2, dadurch gekennzeichnet, daß der Gummi der elastischen Schicht (11) eine sehr niedrige Shore A Härte aufweist.3. Sound-absorbing cover element according to claim 2, characterized in that the rubber of the elastic layer (11) has a very low Shore A hardness. 4. Schalldämmendes Abdeckelement nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Füllstoff der elastischen Schicht eine große Dichte, z.B. in der Großenordnung bis zu 3,8 g/cm³, aufweist.4. Sound-absorbing cover element according to claim 2 or 3, characterized in that the filler of the elastic layer has a high density, for example in the order of up to 3.8 g / cm³. 5. Schalldämmendes Abdeckelement nach einem der Ansprüche 2 - 4, dadurch gekennzeichnet, daß der Füllstoff aus Bariumsulfat besteht.5. Sound-absorbing cover element according to one of claims 2-4, characterized in that the filler consists of barium sulfate. 6. Schalldämmendes Abdeckelement nach einem der Ansprüche 1 - 5, gekennzeichnet durch einen dreischichtigen Sandwichaufbau, bei dem die elastische Schicht (11) großen Dämpfungsvermögens auf ihrer Außenseite eine Außenschicht (12) aufweist und die Kernschicht bildet.6. Sound-absorbing cover element according to one of claims 1-5, characterized by a three-layer sandwich structure, in which the elastic layer (11) has great damping capacity on its outside, an outer layer (12) and forms the core layer. 7. Schalldämmendes Abdeckelement nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, daß die Außenschicht (12) und/oder die Innenschicht (13) aus einem duroplastischen oder thermoplastischen Kunststoff besteht.7. Soundproofing cover element according to one of claims 1-6, characterized in that the outer layer (12) and / or the inner layer (13) consists of a thermosetting or thermoplastic material. 8. Schalldämmendes Abdeckelement nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, daß die Außenschicht (12) und/oder die Innenschicht (13) aus einer tiefgezogenen Metallfolie oder Kunst­stoffolie besteht.8. Sound-absorbing cover element according to one of claims 1-6, characterized in that the outer layer (12) and / or the inner layer (13) consists of a deep-drawn metal foil or plastic film. 9. Schalldämmendes Abdeckelement nach einem der Ansprüche 1 - 8, dadurch gekennzeichnet, daß der Sandwich im Preß- oder Spritzgießverfahren hergestellt ist, wobei dessen Schichten (11 - 13) nacheinander gebildet werden.9. Sound-absorbing cover element according to one of claims 1-8, characterized in that the sandwich is made by the pressing or injection molding process, the layers (11 - 13) of which are formed one after the other. 10. Schalldämmendes Abdeckelement nach einem der Ansprüche 1 - 9, dadurch gekennzeichnet, daß zunächst die aus der elastischen, gefüllten Schicht bestehende Kernschicht (11) hergestellt wird und da­nach die übrigen Schichten (12, 13) aufgebracht werden.10. Sound-absorbing cover element according to one of claims 1-9, characterized in that the core layer (11) consisting of the elastic, filled layer is first produced and then the remaining layers (12, 13) are applied. 11. Schalldämmendes Abdeckelement nach Anspruch 10, dadurch gekennzeichnet, daß der thermoplastische Kunststoff auf der Kernschicht (11) aufgespritzt oder in Folienform aufgebracht ist.11. Sound-absorbing cover element according to claim 10, characterized in that the thermoplastic material is sprayed onto the core layer (11) or is applied in the form of a film. 12. Schalldämmendes Abdeckelement nach einem der Ansprüche 1 - 11, gekennzeichnet durch die Ausbildung als Zylinderkopfhaube für Brennkraftmaschi­nen.12. Sound-absorbing cover element according to one of claims 1-11, characterized by the design as a cylinder head cover for internal combustion engines. 13. Verfahren zur Herstellung eines schalldämmenden Abdeck­elements, insbesondere Abdeckhaube für Brennkraftma­schinen, nach Anspruch 1 und/oder folgenden, da­durch gekennzeichnet, daß man den dreischichtigen Sandwich im Preß- oder Spritzgießver­fahren in einem mit Tauchkanten versehenen Werkzeug und dabei die drei Schichten (11 - 13) des Sandwiches nacheinander herstellt.13. A method for producing a sound-absorbing cover element, in particular a cover for internal combustion engines, according to claim 1 and / or the following, characterized in that the three-layer sandwich in the pressing or injection molding process in a tool provided with plunge edges and the three layers (11-13 ) of the sandwich one after the other. 14. Verfahren nach Anspruch 13, dadurch ge­kennzeichnet, daß man die drei Schichten (11 - 13), zumindest die Außenschicht (12) und Innen­schicht (13), des Sandwiches aus heißhärtenden Materia­lien bildet.14. The method according to claim 13, characterized in that one forms the three layers (11 - 13), at least the outer layer (12) and inner layer (13), of the sandwich of thermosetting materials. 15. Verfahren zur Herstellung eines schalldämmenden Abdeck­elements, insbesondere Abdeckhaube für Brennkraftma­schinen, nach Anspruch 1 und/oder folgenden, da­durch gekennzeichnet, daß man von dem dreischichtigen Sandwich zunächst die Kernschicht (11) herstellt und die thermoplastische Außenschicht (12) und/oder Innenschicht (13) sodann nacheinander aufspritzt oder in Folienform aufbringt.15. A method for producing a sound-absorbing cover element, in particular a cover for internal combustion engines, according to claim 1 and / or the following, characterized in that the core layer (11) is first produced from the three-layer sandwich and the thermoplastic outer layer (12) and / or inner layer ( 13) then sprayed on one after the other or applied in foil form.
EP19880114906 1987-10-10 1988-09-13 Sound damping covering element Expired - Lifetime EP0311797B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873734312 DE3734312A1 (en) 1987-10-10 1987-10-10 SOUND-INSULATING COVER ELEMENT
DE3734312 1987-10-10

Publications (3)

Publication Number Publication Date
EP0311797A2 true EP0311797A2 (en) 1989-04-19
EP0311797A3 EP0311797A3 (en) 1990-09-12
EP0311797B1 EP0311797B1 (en) 1995-03-08

Family

ID=6338053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880114906 Expired - Lifetime EP0311797B1 (en) 1987-10-10 1988-09-13 Sound damping covering element

Country Status (3)

Country Link
EP (1) EP0311797B1 (en)
DE (1) DE3734312A1 (en)
ES (1) ES2070122T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT503644B1 (en) * 2006-09-25 2007-12-15 Trumpf Maschinen Austria Gmbh Method for operating bending presses uses sensors determining restoring force on press beam, uprights and drive system and reactive force of workpiece at beam reversing position and reducing to allow rapid return of ram to upper position
WO2008022736A3 (en) * 2006-08-24 2008-04-17 Elringklinger Ag Shielding component, in particular heat shield

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9213804U1 (en) * 1992-10-13 1994-02-10 Faist M Gmbh & Co Kg Recycle-oriented laminate element for sound insulation
DE4404502C2 (en) * 1994-02-12 2002-02-28 Bosch Gmbh Robert Sound absorbing cover
DE19712472C2 (en) * 1997-03-25 2002-07-04 Greiner Gmbh Process for producing a heavy layer molded part for structure-borne noise insulation
DE102004007602B4 (en) * 2004-02-17 2014-06-18 Volkswagen Ag Cover for an internal combustion engine of a motor vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2375686A1 (en) * 1976-12-23 1978-07-21 Phoenix Gummiwerke Ag Sound and heat insulating panel - has adjacent foam layers one being impregnated to double its weight
US4223073A (en) * 1978-10-30 1980-09-16 Minnesota Mining And Manufacturing Company High-temperature damping composite
EP0033711A2 (en) * 1980-02-04 1981-08-12 The Goodyear Tire & Rubber Company Sound barrier material
US4452841A (en) * 1982-12-20 1984-06-05 The Goodyear Tire & Rubber Company Unsupported shaped sound barrier component

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE810661C (en) * 1948-10-02 1951-10-25 Siemens & Halske A G Sound and vibration isolating component, especially for walls or the like.
GB1451707A (en) * 1974-07-26 1976-10-06 British Uralite Ltd Noise control materials
DE2818252A1 (en) * 1978-04-26 1979-11-08 Helmut Pelzer Motor vehicle body noise suppressing panel - has outer layers of different hardness and low bulk density laminated to inner layer of foamed plastics or felt

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2375686A1 (en) * 1976-12-23 1978-07-21 Phoenix Gummiwerke Ag Sound and heat insulating panel - has adjacent foam layers one being impregnated to double its weight
US4223073A (en) * 1978-10-30 1980-09-16 Minnesota Mining And Manufacturing Company High-temperature damping composite
EP0033711A2 (en) * 1980-02-04 1981-08-12 The Goodyear Tire & Rubber Company Sound barrier material
US4452841A (en) * 1982-12-20 1984-06-05 The Goodyear Tire & Rubber Company Unsupported shaped sound barrier component

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008022736A3 (en) * 2006-08-24 2008-04-17 Elringklinger Ag Shielding component, in particular heat shield
AT503644B1 (en) * 2006-09-25 2007-12-15 Trumpf Maschinen Austria Gmbh Method for operating bending presses uses sensors determining restoring force on press beam, uprights and drive system and reactive force of workpiece at beam reversing position and reducing to allow rapid return of ram to upper position

Also Published As

Publication number Publication date
EP0311797B1 (en) 1995-03-08
EP0311797A3 (en) 1990-09-12
DE3734312C2 (en) 1991-08-08
ES2070122T3 (en) 1995-06-01
DE3734312A1 (en) 1989-04-27

Similar Documents

Publication Publication Date Title
EP1809460B1 (en) Light-weight sound-absorbing covering for a body part of a motor vehicle and method for producing the same
DE2532758A1 (en) NOISE ABSORBING MATERIAL
EP0389978A3 (en) Composite panel
DE4131394A1 (en) Low weight laminar sound absorbing sheet - has skin(s) of porous fibre materials with glass cloth and honeycomb type core layer with infill and with walls at right angles to skin
DE3313044A1 (en) LAYERED BODY WITH FLEXIBLE PARTIAL AREAS TO REDUCE BODY AND / OR AIR SOUND IN ACOUSTICALLY EXCITED SURFACES
DE19702581B4 (en) Interior lining element for the bodywork of a motor vehicle and method of manufacture
EP0311797A2 (en) Sound damping covering element
EP3535117B1 (en) Absorbent sound isolation vehicle cladding element and manufacturing method therefor
DE102009020996A1 (en) Airborne sound insulating material structure
DE10034301C2 (en) Soundproof housing for noise generating machines
EP1854938A2 (en) Cladding element
DE2064445C3 (en) Self-supporting thermoplastic heavy film coated with foam
DE602004010675T2 (en) VEHICLE PLATE WITH REINFORCEMENT LOCATION
DE19949643C2 (en) Process for manufacturing roof reinforcement for vehicles and roof reinforcement
EP1665227A1 (en) Soundproofing coatings, method for the production thereof, and use of the same
DE102004007602A1 (en) Noise damping cover for car combustion engine, whose noise damping element is coupled to support element and extends over engine, permitting compact fitting
DE4334342C2 (en) Sound-absorbing molded part with a layered structure
DE2556224A1 (en) Soundproofing element of elastomer granules embedded in foam - with fixed ratio of granules to foam, for multiple applications
DE3603069A1 (en) Process for producing dimensionally stable laminated elements and laminated elements produced by the process
DE102010020308A1 (en) Method for manufacturing body component with layer construction, involves inserting profile structure in surface of core layer, where surface-structured core layer is formed in accordance with curve characteristic of body component
DE3709080C2 (en)
DE2751774A1 (en) Sound absorbing polyurethane foam composite - with layers of flexible and dense polyurethane foam, useful for deadening engine noise
EP0198493A2 (en) Acoustically active material composition
DE102015225716A1 (en) Fiber component for vehicle exterior and method for its production
DE102018103462A1 (en) Automotive carpeting

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE ES FR GB IT SE

17P Request for examination filed

Effective date: 19910223

RBV Designated contracting states (corrected)

Designated state(s): ES FR GB IT SE

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROBERT BOSCH GMBH

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

17Q First examination report despatched

Effective date: 19930316

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): ES FR GB IT SE

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2070122

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950518

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960828

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19960917

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19960919

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19960930

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970913

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970914

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19970915

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19970930

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970913

EUG Se: european patent has lapsed

Ref document number: 88114906.6

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20010201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050913