EP0391014B1 - Silencieux à absorption pour moteurs à explosion en particulier pour véhicules tout-terrain - Google Patents

Silencieux à absorption pour moteurs à explosion en particulier pour véhicules tout-terrain Download PDF

Info

Publication number: EP0391014B1
Authority: EP; European Patent Office
Prior art keywords: envelope; silencer; resistant; annular; tube
Prior art date: 1989-04-07
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 - Lifetime

Application number

EP89830558A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP0391014A3 (en

EP0391014A2 (fr

Inventor

Franco Acerbis

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.)

Acerbis Italia SpA

Original Assignee

Acerbis Italia SpA

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.)

1989-04-07

Filing date

1989-12-20

Publication date

1994-03-23

1989-12-20 Application filed by Acerbis Italia SpA filed Critical Acerbis Italia SpA

1989-12-20 Priority to AT89830558T priority Critical patent/ATE103371T1/de

1990-10-10 Publication of EP0391014A2 publication Critical patent/EP0391014A2/fr

1990-12-05 Publication of EP0391014A3 publication Critical patent/EP0391014A3/fr

1994-03-23 Application granted granted Critical

1994-03-23 Publication of EP0391014B1 publication Critical patent/EP0391014B1/fr

2009-12-20 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1861—Construction facilitating manufacture, assembly, or disassembly the assembly using parts formed by casting or moulding
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/16—Selection of particular materials
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
- F01N13/1827—Sealings specially adapted for exhaust systems
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2310/00—Selection of sound absorbing or insulating material
- F01N2310/02—Mineral wool, e.g. glass wool, rock wool, asbestos or the like
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/10—Tubes having non-circular cross section
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2530/00—Selection of materials for tubes, chambers or housings
- F01N2530/18—Plastics material, e.g. polyester resin

Definitions

the present invention relates to an improved absorption silencer for internal combustion engines, in particular for all-terrain vehicles.
exhaust systems for motor vehicles essentially consist of an exhaust pipe proper and a silencer, also called an "exhaust pipe”, which is basically intended to reduce noise at exhaust to legal limits.
exhaust pipe also called an "exhaust pipe”
the shapes and dimensions of both the exhaust pipe and the muffler are decisive, but negatively and negatively affect the performance of the engine itself by preventing the free flow of the burnt gases at the outlet, and this in particular. for two-stroke engines, most often used on all-terrain vehicles.
the silencers known today and made up of a metal casing which delimits the expansion chamber of essentially cylindrical shape with a diameter greater than that of the exhaust tube but of limited size are of two types: the first operating by "resonance or reflection”, comprises several chambers inserted in series or in parallel with the gas outlet tube and which acoustically filter out most of the exhaust noise; and the second type operating by “absorption”, comprises a sound-absorbing material, for example rock wool, placed between the perforated exhaust tube and the envelope and which, by its vibration, dissipates the energy of exhaust gas.
the object of the present invention is to eliminate the aforementioned drawbacks by providing an absorption type muffler which allows a reduction in both exhaust noise and thermal losses, an increase in its service life and the possibility of replacing only the envelope in the event of rupture.
said envelope is made of synthetic thermoplastic material such as nylon or PPS, and the annular seals are made of silicone or viton.
the solution proposed by the present invention allows the production of a silencer which reduces the exhaust noise by approximately 4-5 dBA, reduces the dispersion of heat towards the outside and strongly attenuates the vibrations of the envelope which is advantageously achievable by rotational molding and therefore without welding, and which in addition can be mounted on the exhaust tube of removably so that it can be easily and quickly replaced without requiring disassembly or replacement of the exhaust pipe.
FIG. 1 shows a front view, partly in section, of an absorption silencer according to the invention
FIG. 2 shows a sectional view along line A-A of Fig 1
FIG. 3 shows, in section, the detail of the connection between the casing and the exhaust tube of the silencer of FIG. 1.
this silencer on the tube as follows.
the first part 10 of the casing 1 with the corresponding annular seal 20 mounted in the seat 14, is threaded onto the perforated tube 5 by its rear end and thus slid up to the stop 16 provided at the front end of the tube 5 ; after having filled said part 10 of the envelope with rock wool or similar material, the second part 18, already provided with the annular seal 21, is mounted by threading it onto the rear end of the tube 5, and bringing it close to the first part of the envelope until it is joined to it by interlocking interlocking.
at least one radial screw 17 for connection is advantageously provided.

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Exhaust Silencers (AREA)
Characterised By The Charging Evacuation (AREA)
Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Road Paving Structures (AREA)

EP89830558A 1989-04-07 1989-12-20 Silencieux à absorption pour moteurs à explosion en particulier pour véhicules tout-terrain Expired - Lifetime EP0391014B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT89830558T ATE103371T1 (de)	1989-04-07	1989-12-20	Absorptions-schalldaempfer fuer brennkraftmaschinen, insbesondere fuer gelaendefahrzeuge.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
IT939589		1989-04-07
IT8909395A IT1233289B (it)	1989-04-07	1989-04-07	Silenziatore ad assorbimento per motori a scoppio, in particolare per veicoli fuoristrada

Publications (3)

Publication Number	Publication Date
EP0391014A2 EP0391014A2 (fr)	1990-10-10
EP0391014A3 EP0391014A3 (en)	1990-12-05
EP0391014B1 true EP0391014B1 (fr)	1994-03-23

Family

ID=11129496

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP89830558A Expired - Lifetime EP0391014B1 (fr)	1989-04-07	1989-12-20	Silencieux à absorption pour moteurs à explosion en particulier pour véhicules tout-terrain

Country Status (6)

Country	Link
US (1)	US5033580A (it)
EP (1)	EP0391014B1 (it)
AT (1)	ATE103371T1 (it)
DE (1)	DE68914139T2 (it)
ES (1)	ES2054093T3 (it)
IT (1)	IT1233289B (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN1116505C (zh) *	1997-11-21	2003-07-30	斯蒂芬纳斯·费里拉	消音器
US7325652B2 (en) *	2001-11-06	2008-02-05	Ocv Intellectual Capital, Llc	Bumper/muffler assembly
US7510050B2 (en) *	2004-01-27	2009-03-31	Emler Don R	Vehicle exhaust systems
US7942237B2 (en) *	2006-04-12	2011-05-17	Ocv Intellectual Capital, Llc	Long fiber thermoplastic composite muffler system with integrated reflective chamber
US7934580B2 (en) *	2006-04-12	2011-05-03	Ocv Intellectual Capital, Llc	Long fiber thermoplastic composite muffler system
US20100307863A1 (en) *	2007-12-14	2010-12-09	Ocv Intellectual Capital, Llc	Composite muffler system thermosetable polymers

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2101460A (en) *	1932-12-17	1937-12-07	Schmidt Ulrich	Sound muffling device
US3159237A (en) *	1959-10-28	1964-12-01	Nelson Muffler Corp	Exhaust muffler
GB950029A (en) *	1962-03-21	1964-02-19	Svein Dyrhoff	Sealing collar for tubes and rods
US3181646A (en) *	1963-04-15	1965-05-04	Howard C Edwards	Silencer having contiguous concentric layers of sound absorbent material
US3884037A (en) *	1969-02-17	1975-05-20	Texaco Inc	Internal combustion engine system for exhaust emissions control utilizing an acoustic catalytic muffler
CH591070A5 (it) *	1975-09-10	1977-08-31	Terraillon
BR5701149U (pt) *	1977-09-16	1978-03-07	P Negrao	Atenuador
CH647302A5 (de) *	1979-06-06	1985-01-15	Alusuisse	Vorrichtung zum ableiten der abgase von verbrennungskraftmaschinen.
JPS60175717A (ja) *	1984-02-20	1985-09-09	Honda Motor Co Ltd	内燃機関用消音器
JPS6241218A (ja) *	1985-08-19	1987-02-23	Mitsubishi Electric Corp	半導体封止用エポキシ樹脂組成物

1989
- 1989-04-07 IT IT8909395A patent/IT1233289B/it active
- 1989-12-20 AT AT89830558T patent/ATE103371T1/de not_active IP Right Cessation
- 1989-12-20 ES ES89830558T patent/ES2054093T3/es not_active Expired - Lifetime
- 1989-12-20 DE DE68914139T patent/DE68914139T2/de not_active Expired - Fee Related
- 1989-12-20 EP EP89830558A patent/EP0391014B1/fr not_active Expired - Lifetime
1990
- 1990-04-05 US US07/505,909 patent/US5033580A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
ES2054093T3 (es)	1994-08-01
DE68914139T2 (de)	1994-11-03
EP0391014A3 (en)	1990-12-05
DE68914139D1 (de)	1994-04-28
EP0391014A2 (fr)	1990-10-10
IT1233289B (it)	1992-03-26
US5033580A (en)	1991-07-23
ATE103371T1 (de)	1994-04-15
IT8909395A0 (it)	1989-04-07

Publication	Publication Date	Title
FR2761404A1 (fr)	1998-10-02	Systeme d'echappement pour vehicule
WO2007110491A1 (fr)	2007-10-04	Structure de virole d'entree d'air
EP0057623B1 (fr)	1986-07-23	Silencieux de gaz d'échappement de moteur thermique
FR2699596A1 (fr)	1994-06-24	Elément flexible formant conduite pour une conduite d'échappement d'un moteur à combustion interne.
EP0391014B1 (fr)	1994-03-23	Silencieux à absorption pour moteurs à explosion en particulier pour véhicules tout-terrain
FR2835018A1 (fr)	2003-07-25	Perfectionnement a un flexible de decouplage pour ligne d'echappement d'un moteur de vehicule automobile
EP2256330B1 (fr)	2012-09-19	Dispositif d'atténuation acoustique pour ligne d'admission d'un moteur thermique, et ligne d'admission l'incorporant.
FR2713703A1 (fr)	1995-06-16	Dispositif d'épuration de gaz d'échappement de moteurs.
FR2598176A1 (fr)	1987-11-06	Silencieux pour courant gazeux
FR2661455A1 (fr)	1991-10-31	Dispositif de recuperation et de recyclage des gaz de combustion imbrules emanant du carter d'un moteur a combustion interne, et moteur equipe de ce dispositif.
FR2665217A1 (fr)	1992-01-31	Entonnoir a cartouche filtrante echangeable destine a etre monte sur les pots d'echappement de gaz des vehicules automobiles.
EP0074285B1 (fr)	1986-01-29	Joint tournant pour tuyau d'échappement de véhicule automobile
WO1997005370A1 (fr)	1997-02-13	Dispositif d'echappement pour moteur a combustion interne
FR2740511A1 (fr)	1997-04-30	Dispositif de recirculation des gaz d'echappement d'un moteur a combustion interne
EP0002969B1 (fr)	1981-01-07	Perfectionnement aux moteurs à combustion interne à deux temps
EP0144277A1 (fr)	1985-06-12	Procédé pour améliorer le fonctionnement d'un moteur à combustion dispositif pour la mise en oeuvre de ce procédé et moteur à combustion interne equipe de ce dispositif
FR3074220A1 (fr)	2019-05-31	Silencieux d’echappement
FR2870567A1 (fr)	2005-11-25	Ligne d'echappement pour vehicule automobile
WO2007148000A1 (fr)	2007-12-27	Dispositif d'echappement comportant une culasse munie d'un collecteur d'echappement integre decouple thermique
EP0741242A1 (fr)	1996-11-06	Elément de circuit d'admission d'air pour moteur à combustion interne
FR2754851A1 (fr)	1998-04-24	Dispositif antipollution pour vehicule a moteur
FR2836697A1 (fr)	2003-09-05	Culasse de moteur a combustion interne, et moteur equipe d'une telle culasse
FR2650360A1 (fr)	1991-02-01	Vanne a papillon
FR2801071A1 (fr)	2001-05-18	Moteur thermique comportant un couvre-culasse pour culasse munie d'actionneurs electromagnetiques
EP1460243B1 (fr)	2006-09-20	Système d'atténuation acoustique

Legal Events

Date	Code	Title	Description
1990-08-25	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
1990-10-10	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE
1990-10-16	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1990-12-05	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE
1991-09-11	17P	Request for examination filed	Effective date: 19910605
1991-09-18	R17P	Request for examination filed (corrected)	Effective date: 19910705
1992-08-05	17Q	First examination report despatched	Effective date: 19920622
1993-12-01	RAP3	Party data changed (applicant data changed or rights of an application transferred)	Owner name: ACERBIS ITALIA S.P.A.
1994-02-04	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1994-03-23	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE
1994-03-23	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19940323 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19940323 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;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.SCRIBED TIME-LIMIT Effective date: 19940323
1994-03-23	REF	Corresponds to:	Ref document number: 103371 Country of ref document: AT Date of ref document: 19940415 Kind code of ref document: T
1994-04-28	REF	Corresponds to:	Ref document number: 68914139 Country of ref document: DE Date of ref document: 19940428
1994-07-20	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19940621
1994-08-01	REG	Reference to a national code	Ref country code: ES Ref legal event code: FG2A Ref document number: 2054093 Country of ref document: ES Kind code of ref document: T3
1994-12-16	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: AT Payment date: 19941216 Year of fee payment: 6
1994-12-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: ES Payment date: 19941230 Year of fee payment: 6
1994-12-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: CH Effective date: 19941231 Ref country code: LI Effective date: 19941231 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19941231
1994-12-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 19941231 Year of fee payment: 6
1995-01-04	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: BE Payment date: 19950104 Year of fee payment: 6
1995-01-26	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1995-01-26	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1995-03-15	26N	No opposition filed
1995-08-31	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
1995-11-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19951130 Year of fee payment: 7
1995-12-08	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19951208 Year of fee payment: 7
1995-12-20	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: AT Effective date: 19951220
1995-12-21	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: 19951221
1995-12-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: BE Effective date: 19951231
1996-02-29	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19960229 Year of fee payment: 7
1996-06-30	BERE	Be: lapsed	Owner name: ACERBIS ITALIA S.P.A. Effective date: 19951231
1996-07-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Effective date: 19960701
1996-09-02	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee	Effective date: 19960701
1996-12-20	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19961220
1997-08-13	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19961220
1997-08-29	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Effective date: 19970829
1997-09-02	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Effective date: 19970902
1997-10-31	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
2001-03-16	REG	Reference to a national code	Ref country code: ES Ref legal event code: FD2A Effective date: 20010201