ES2235332T3 - Funda flexible universal con fuelle para junta articulada y herramientas para colocacion de esta funda. - Google Patents
Funda flexible universal con fuelle para junta articulada y herramientas para colocacion de esta funda.Info
- Publication number
- ES2235332T3 ES2235332T3 ES98925768T ES98925768T ES2235332T3 ES 2235332 T3 ES2235332 T3 ES 2235332T3 ES 98925768 T ES98925768 T ES 98925768T ES 98925768 T ES98925768 T ES 98925768T ES 2235332 T3 ES2235332 T3 ES 2235332T3
- Authority
- ES
- Spain
- Prior art keywords
- sheath
- bellows
- flexible
- joint
- 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.)
- Expired - Lifetime
Links
Classifications
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
- F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
- F16D3/845—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers allowing relative movement of joint parts due to the flexing of the cover
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/28—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same positioning or withdrawing resilient bushings or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/34—Branched
- Y10T403/341—Three or more radiating members
- Y10T403/345—Coplanar
- Y10T403/346—Additional rod held by encompassing means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Diaphragms And Bellows (AREA)
- Sealing Devices (AREA)
- Pivots And Pivotal Connections (AREA)
- Joints Allowing Movement (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Pens And Brushes (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
LA PRESENTE INVENCION SE REFIERE A UNA VAINA FLEXIBLE UNIVERSAL CON FUELLE PARA JUNTA ARTICULADA ASI COMO DISPOSITIVO DE COLOCACION DE ESTA VAINA. LA VAINA DE PROTECCION ESTA CONSTITUIDA POR UN ELEMENTO TUBULAR (4, 5, 6, 7, 8) CON ZONAS DE FIJACION EN LOS EXTREMOS Y UN FUELLE CENTRAL (1) TRONCOCONICO, COMPRENDIENDO LOS PLIEGUES DE ESTE FUELLE FLANCOS INCLINADOS QUE FORMAN UN ANGULO DE ENTRE 0 Y 45 CON EL EJE DE LA VAINA DEL LADO DEL MAYOR DIAMETRO DE LA VAINA Y ENTRE 60 Y 80 DEL LADO DE DIAMETRO MENOR, ESTANDO DICHA VAINA ASOCIADA A CONOS DE MONTAJE FLEXIBLES EN LOS QUE EL DIAMETRO DE LA BASE ES VARIABLE. LA INVENCION SE REFIERE AL CAMPO DE EQUIPOS PARA TALLERES DE REPARACION. LA VAINA SE DESTINA A LA PROTECCION DE LAS JUNTAS LUBRICADAS UTILIZADAS PARA TRANSMITIR UN MOVIMIENTO A ELEMENTOS MOVILES Y EN PARTICULAR A LOS ELEMENTOS DE TRANSMISION EN EL CAMPO DE LOS VEHICULOS MOTORIZADOS.
Description
Funda flexible universal con fuelle para junta
articulada y herramientas para colocación de esta funda.
La presente invención tiene por objeto una funda
flexible universal con fuelle para junta articulada.
Se refiere al sector industrial y comercial de la
fabricación y difusión de equipos para talleres de reparación y de
mantenimiento de automóviles. La funda está destinada a la
protección de las juntas lubrificadas de tipo cardán,
homocinéticas, trípodes, de bolas, con rótula o similares utilizadas
para transmitir un movimiento a órganos móviles, El dispositivo
puede ser adaptado a todos los tipos de fundas de protección y, en
particular, a aquellas utilizadas para los órganos mecánicos de
transmisión o las cremalleras de dirección.
Las fundas protectoras para juntas articuladas
sirven, por una parte, para proteger las articulaciones contra los
cuerpos extraños, los choques y otros elementos exteriores y, por
otra parte, para contener de manera estanca la masa lubrificante
que el mecanismo necesita para durar.
Están constituidas por un elemento tubular de
caucho o elastómero flexible, usualmente moldeado de una sola
pieza, formado por una parte central troncocónica con ondulaciones
que permitan la flexión y la extensión axial del cuerpo, y por dos
extremidades que compartan tanto la una como la otra zonas de
fijaciones cilíndricas con un diámetro interior que permita
empalmarlas a los elementos correspondientes de la junta
articulada, y que incorporan, en general, unas gargantas que formen
asientos destinados a recibir los dispositivos de apriete que
garanticen la estanqueidad del conjunto.
La mayoría de las fundas son específicas para
cada aplicación, en especial para equipar los vehículos nuevos.
Para reducir el número de referencias en el mercado de repuestos,
algunos modelos son "universales", es decir, que se pueden
montar sobre una amplia gama de juntas articuladas de diámetros y
longitudes diferentes. Esta "universalidad" se obtiene en
particular por medio de zonas de fijaciones múltiples en escalones,
como puede observarse por ejemplo en la patente Nº EP 0 339 387,
que se refiere a un fuelle de protección para juntas articuladas de
transmisión mecánica, que comporta en cada extremidad varias zonas
de fijación de diámetros diferentes.
Las fundas son sometidas a deformaciones
constantes, en su longitud e inclinación, siendo al mismo tiempo
sometidas a rotaciones de velocidad muy variable. Bajo el efecto de
la fuerza centrífuga y de las deformaciones de la pared de la
funda, la materia lubrificante tiene tendencia a separarse de las
partes de la junta cercanas del eje de rotación y de los mecanismos
de articulación, lo que, en caso de fuga o de llenado deficiente
puede comprometer seriamente el funcionamiento o la duración del
dispositivo.
El dispositivo según la presente invención tiene
por objeto remediar estos inconvenientes. Permite, en efecto, que
se realicen fundas protectoras para juntas articuladas en los
cuales las deformaciones de la pared externa provoquen que la grasa
contenida en la funda se desplace en dirección del diámetro mayor
de éste hacia la zona donde se encuentran los elementos mecánicos
que necesitan ser engrasados (cojinetes, articulaciones,
rodamientos, etc.).
La funda de protección está constituida por un
elemento tubular con zonas de fijación en las extremidades y un
fuelle central troncocónico, que comporta los pliegues de dicho
fuelle con sus flancos inclinados formando un ángulo de 0 a 45º con
el eje de la funda por el lado del diámetro mayor del manguito y de
60 a 80º por el lado del diámetro pequeño, de manera que las
deformaciones del fuelle provoquen un retroceso de la grasa hacia
la extremidad de gran diámetro mayor.
Se deducirá de los dibujos adjuntos, dados a
título de ejemplo no limitativo unas formas de realización del
objeto de la invención:
la Fig. 1 es una semisección axial de una funda
de protección para junta de transmisión;
la Fig. 2 representa a diferente escala una funda
del mismo tipo montada sobre una junta articulada;
la Fig. 3 representa una vista lateral de una
funda de protección para cremallera de dirección;
la Fig. 4 es una vista ampliada del detalle D2 de
la figura anterior,
la Fig. 5 es una vista ampliada del detalle D1 de
la figura 2
y las figuras 6 y 7 representan, en las mismas
condiciones, una variante de funda que se puede montar sobre las
juntas de transmisión, respectivamente, con o sin garganta
periférica para nervadura de enganche.
La funda, figuras 1 a 5, está constituida por un
manguito tubular realizado en un material flexible resistente a los
lubrificantes, tal como caucho o elastómero, y que comporta tres
partes: un fuelle 1 central troncocónico deformable y extensible, y
dos extremidades 2, 3 que permiten montar de forma estanca dicha
funda sobre la junta articulada.
Las extremidades 2, 3 forman, respectivamente,
unas zonas de fijación de pequeño y de gran diámetro y están
compuestas, cada una, por uno o varios elementos sensiblemente
cilíndricos 4, 5, 6, 7, y 8, 9, 10 de diámetros internos diferentes
provistos de gargantas externas destinadas a recibir un collar de
apriete que garantice la estanqueidad del conjunto. Estos elementos
cilíndricos podrán estar unidos entre sí por unas ondulaciones
deformables 11.
Las superficies exteriores de apoyo de los
collares de apriete podrán ser lisas o, por el contrario, estar
provistas de ranuras circulares 12 que transmitan compresiones
diferenciadas que proporcionen una mejor estanqueidad.
Los pliegues del fuelle 1 comportan unos flancos
inclinados según unos ángulos asimétricos en relación con el eje
longitudinal de la funda: por una parte, en el lado del diámetro
mayor, ángulos A1 comprendidos entre 0 y 45º y, por otra parte, en
el lado del pequeño diámetro, ángulos comprendidos entre 60 y 80º en
relación con el mismo eje longitudinal. Cuando el fuelle esté
sometido a movimientos de rotación o de flexión, la grasa que, en
los fuelles conocidos hasta la fecha, tiende a escaparse de la
articulación 13 para dirigirse hacia el pequeño diámetro de la
funda, se ve obligada a retroceder hacia dicha articulación. En
efecto, los ángulos abiertos A2 (60 a 80º) tienden a formar una
barrera móvil, mientras que los ángulos cerrados A1 (10 a 30º)
favorecen el paso del lubrificante.
Los constructores de vehículos equipados con
dirección asistida prevén unos respiraderos que compensen las
diferencias de presión existentes entre los dos fundas de
protección con fuelle montados en cada extremidad de la cremallera
de dirección. Estos respiraderos están conectados entre sí por unos
tubos de diámetros y de configuración variables según los modelos
de vehículos. En todos los casos conocidos, estos
tubos-respiraderos son empalmados a las fundas de
protección o los atraviesan. Las fundas adaptables disponibles
actualmente en el mercado no presentan ni orificios ni empalmes
para estos tubos-respiraderos. La dificultad reside
en la gran disparidad de los montajes elegidos por los
constructores de vehículos así como en la complejidad del moldeado
de una funda de protección realmente adaptable.
Las fundas de protección según la presente
invención destinados a las cremalleras de dirección están equipadas
con un empalme flexible 14 posicionado de manera que pueda
empalmarse a la gran mayoría de los
tubos-respiraderos de los vehículos que se
encuentran actualmente en el mercado. La extremidad abierta de
dicho empalme comporta varias secciones de diámetros diferentes que
permiten que se realice el empalme por simple apriete de los
diferentes tubos existentes en el mercado. La otra extremidad está
cerrada para permitir el montaje de la funda sobre las cremalleras
de dirección no asistida y, por lo tanto, desprovistas de
respiraderos. Este cierre se obtiene con un opérculo 15 integrado
en el fuelle en el momento del moldeado. Este opérculo puede ser
fácilmente arrancado o perforado por el montador cuando se trate de
una dirección asistida y, por lo tanto está provisto de un
tubo-respiradero, de modo que haga comunicar a este
último con el interior de la funda (figuras 3 y 4).
Para que sea económicamente viable, debe
realizarse el conjunto de una pieza, por simple inyección o
inyección-soplado en un utillaje convencional con
abertura en dos planos. Esto resulta posible por el posicionamiento
y la forma del empalme flexible 14 y, sobre todo por la posición
del opérculo 15 integrado en la pared de la funda.
Las fundas de protección convencionales como se
describen, por ejemplo, en la patente US-5 645 286
comportan en general sobre la superficie interna unos elementos
cilíndricos 4 a 10 de fijación, unas nervaduras de enganche 16
circulares dispuestas generalmente en medio de cada superficie de
apoyo. Estas nervaduras están destinadas a insertarse en unas
gargantas periféricas 17 previstas en el "cuenco" 13 de las
juntas articuladas de transmisión o sobre los cárters de las
cremalleras de dirección. Estas gargantas están a muy menudo
situadas cerca del borde del dispositivo en cuestión, de modo que la
superficie de apoyo 18 del elemento cilíndrico se encuentre
parcialmente en voladizo. Con el fin de evitar un riesgo de
dislocación, las nervaduras de enganche 16 de las fundas de
protección según la invención son desplazadas hacia el fuelle 1 de
manera que los collares de apriete se apoyen en la zona plana y no
puedan bascular (figura 5).
Algunos cuencos 13 de juntas articuladas o
cárters de cremallera están desprovistos de garganta periférica
17.
Para permitir la adaptación de la junta de
protección según la invención, todos los tipos de cuencos o cárters
de cremalleras, tanto si comportan una garganta periférica 17 como
si no la tienen, algunas zonas de fijación 4 - 10 comportarán
ventajosamente una nervadura de enganche constituida por un pliegue
anular 20 en "V" con la punta dirigida hacia el interior y
cuya forma esté determinada de manera que permita que la nervadura
se abra y se aplaste con ocasión de la fijación del collar de
apriete 21 en el caso de elementos con superficie externa lisa
(figura 7).
Los conos de montaje rígidos conocidos serán
ventajosamente sustituidos por dispositivos de colocación de la
funda que se adapten automáticamente al diámetro de cada cuenco 13
de junta de transmisión, o cárter de cremallera de dirección.
El posicionamiento de los diversos elementos
constitutivos confiere al objeto de la invención un máximo de
efectos útiles que, hasta la fecha, no se habían obtenido con
dispositivos similares.
Claims (5)
1. Funda flexible con fuelle para junta
articulada, destinada a la protección de las juntas articuladas
lubrificadas de tipo cardán, homocinéticas, trípodes, de bolas, con
rótula o similares utilizadas para transmitir un movimiento a los
órganos móviles o a los órganos tales como cremalleras de dirección,
en particular en el sector de los equipos de repuesto para
automóviles, consistiendo dicha funda en un elemento tubular
formado por zonas de fijación en las extremidades constituidas por
elementos sensiblemente cilíndricos (4, 5, 6, 7 y 8, 9, 10) y un
fuelle (1) central troncocónico cuyos pliegues comporten unos
flancos inclinados según unos ángulos asimétricos en relación con el
eje longitudinal de la funda: por una parte en el lado del diámetro
mayor, ángulos cerrados (A1) comprendidos entre 0 y 45º y, por otra
parte, en el lado del pequeño diámetro, ángulos abiertos (A2)
comprendidos entre 60 y 80º en relación con el mismo eje
longitudinal, de modo que, cuando el fuelle (1) esté sometido a
movimientos de rotación o de flexión, la grasa contenida en el
fuelle sea obligada a retroceder hacia la articulación (13) de la
junta articulada que se encuentra en el lado de la extremidad de
diámetro mayor.
caracterizada porque la superficie interna
de los elementos cilíndricos (4 a 10) de fijación comportan unas
nervaduras de enganche (16) circulares desplazadas hacia el fuelle
(1) y no dispuestas en medio de dichas superficies internas.
2. Funda flexible según la reivindicación 1,
caracterizada por el hecho de que las superficies exteriores
de los elementos cilíndricos (4 a 10) de fijación destinadas a
recibir los collares de apriete están provistas de ranuras
circulares (12) determinadas para transmitir compresiones
diferenciadas aptas para mejorar la estanqueidad.
3. Funda flexible según una cualquiera de las
reivindicaciones anteriores, caracterizada por el hecho de
que algunos elementos cilíndricos (4 a 10) comportan una nervadura
de enganche constituida por un pliegue anular (20) en "V" con
la punta dirigida hacia el interior y cuya forma esté determinada de
manera que permita que se abra la nervadura y se aplaste en el caso
de elementos de apoyo con superficie externa lisa.
4. Funda flexible según una cualquiera de las
reivindicaciones anteriores, destinada a las cremalleras de
dirección y que comporta un empalme flexible (14) que se adapta,
gracias a una extremidad abierta provista de varias secciones de
diámetros diferentes, sobre los tubos-respiraderos
destinados a compensar las diferencias de presión existente entre
las dos fundas de protección con fuelle montadas en cada extremidad
de la cremallera de los vehículos equipados con dirección
asistida,
caracterizada por el hecho de que la
extremidad del empalme flexible (14) situado en el lado de la funda
está cerrada por medio de un opérculo (15) integrado en la pared de
la funda en el momento del moldeado y dispuesto para poder ser
fácilmente arrancado o perforado por el montador cuando se trate de
dirección asistida, de manera que se permita el montaje de la funda
sobre las cremalleras de dirección asistida.
5. Funda flexible según una cualquiera de las
reivindicaciones anteriores, caracterizado por el hecho de
que los pliegues del fuelle (1) comportan unos flancos inclinados
según ángulos (A1, A2) asimétricos en relación con el eje
longitudinal de la funda, estando dichos ángulos determinados de
modo que, cuando el fuelle (1) sea sometido a movimientos de
rotación o de flexión, la grasa contenida en la funda sea obligada
a retroceder hacia la articulación (13) de la junta articulada que
se encuentra en el lado de la funda de diámetro mayor.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9714747A FR2771145B1 (fr) | 1997-11-19 | 1997-11-19 | Gaine souple a soufflet pour joint articule et outillages de mise en place de cette gaine |
FR9714747 | 1997-11-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2235332T3 true ES2235332T3 (es) | 2005-07-01 |
Family
ID=9513733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES98925768T Expired - Lifetime ES2235332T3 (es) | 1997-11-19 | 1998-05-22 | Funda flexible universal con fuelle para junta articulada y herramientas para colocacion de esta funda. |
Country Status (10)
Country | Link |
---|---|
US (1) | US6328498B1 (es) |
EP (1) | EP0953121B1 (es) |
AT (1) | ATE286215T1 (es) |
BR (1) | BR9806776A (es) |
CA (1) | CA2277794C (es) |
DE (1) | DE69828381T2 (es) |
ES (1) | ES2235332T3 (es) |
FR (1) | FR2771145B1 (es) |
IL (1) | IL130916A0 (es) |
WO (1) | WO1999025985A1 (es) |
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JP3960725B2 (ja) * | 1999-11-30 | 2007-08-15 | Ntn株式会社 | ブーツ付き等速自在継手 |
GB2358157B (en) * | 2000-01-05 | 2004-09-29 | Draftex Ind Ltd | Blow-moulded articles and blow-moulding methods for producing them |
EP1136714A1 (fr) | 2000-03-24 | 2001-09-26 | Tech-Auto S.A. | Gaine souple universelle à soufflet |
GB2369864B (en) * | 2000-12-05 | 2004-11-03 | Draftex Ind Ltd | Protective covers |
FR2833508A1 (fr) * | 2001-12-14 | 2003-06-20 | Yamajany Sarl | Cone de montage de soufflets de protection d'articulations mecaniques |
FR2849415B1 (fr) * | 2002-12-31 | 2006-03-03 | Renault Sa | Systeme de passage de cablage entre caisse et porte d'un vehicule automobile, et vehicule equipe de ce systeme |
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US11877745B2 (en) | 2021-10-18 | 2024-01-23 | Cilag Gmbh International | Surgical stapling assembly having longitudinally-repeating staple leg clusters |
US11937816B2 (en) | 2021-10-28 | 2024-03-26 | Cilag Gmbh International | Electrical lead arrangements for surgical instruments |
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JPS60193620A (ja) * | 1984-03-15 | 1985-10-02 | Toyo Tire & Rubber Co Ltd | 熱可塑性ポリエステルエラストマ−のジヨイントブ−ツ成形体 |
US5015515A (en) * | 1984-07-24 | 1991-05-14 | Paulin Dale W | Ventilated expandable boot |
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GB2183778B (en) * | 1985-12-06 | 1989-10-11 | Trw Cam Gears Ltd | A rack and pinion steering gear assembly |
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FR2623861B1 (fr) * | 1987-12-01 | 1993-04-23 | Ouest Cie | Soufflet de protection notamment pour transmission avant de vehicule automobile |
DE3813782A1 (de) * | 1988-04-22 | 1989-11-02 | Boge Sonja Alexandra | Faltenbalg zum schutz von gelenkverbindungen |
EP0339387A1 (de) | 1988-04-27 | 1989-11-02 | KKW Kulmbacher Klimageräte-Werk GmbH | Gehäuse für eine Kältemaschine |
US5027665A (en) * | 1988-06-23 | 1991-07-02 | Hayward Philip F | Protective gaiters for joints |
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GB2287075B (en) * | 1994-02-24 | 1996-11-27 | Draftex Ind Ltd | Protective bellows |
GB2287074A (en) * | 1994-02-24 | 1995-09-06 | Draftex Ind Ltd | End fixing of protective bellows |
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US6089574A (en) * | 1998-03-11 | 2000-07-18 | Salflex Polymers Ltd. | Boot with insertable bushing |
-
1997
- 1997-11-19 FR FR9714747A patent/FR2771145B1/fr not_active Expired - Fee Related
-
1998
- 1998-05-22 US US09/341,726 patent/US6328498B1/en not_active Expired - Fee Related
- 1998-05-22 AT AT98925768T patent/ATE286215T1/de not_active IP Right Cessation
- 1998-05-22 BR BR9806776-1A patent/BR9806776A/pt not_active Application Discontinuation
- 1998-05-22 EP EP98925768A patent/EP0953121B1/fr not_active Revoked
- 1998-05-22 WO PCT/FR1998/001027 patent/WO1999025985A1/fr active IP Right Grant
- 1998-05-22 ES ES98925768T patent/ES2235332T3/es not_active Expired - Lifetime
- 1998-05-22 IL IL13091698A patent/IL130916A0/xx unknown
- 1998-05-22 DE DE69828381T patent/DE69828381T2/de not_active Expired - Fee Related
- 1998-05-22 CA CA002277794A patent/CA2277794C/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
IL130916A0 (en) | 2001-01-28 |
EP0953121B1 (fr) | 2004-12-29 |
DE69828381D1 (de) | 2005-02-03 |
EP0953121A1 (fr) | 1999-11-03 |
DE69828381T2 (de) | 2005-12-01 |
US6328498B1 (en) | 2001-12-11 |
FR2771145B1 (fr) | 2000-02-25 |
FR2771145A1 (fr) | 1999-05-21 |
ATE286215T1 (de) | 2005-01-15 |
CA2277794C (fr) | 2004-10-05 |
WO1999025985A1 (fr) | 1999-05-27 |
BR9806776A (pt) | 2000-05-16 |
CA2277794A1 (fr) | 1999-05-27 |
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