FR2814134A1 - Mounting, for vehicle windscreen wiper arm, consists of rotary axle, with support mounting at outer end for wiper arm, with pressure spring and compensating mechanism, to reduce spring pressure. - Google Patents
Mounting, for vehicle windscreen wiper arm, consists of rotary axle, with support mounting at outer end for wiper arm, with pressure spring and compensating mechanism, to reduce spring pressure. Download PDFInfo
- Publication number
- FR2814134A1 FR2814134A1 FR0011771A FR0011771A FR2814134A1 FR 2814134 A1 FR2814134 A1 FR 2814134A1 FR 0011771 A FR0011771 A FR 0011771A FR 0011771 A FR0011771 A FR 0011771A FR 2814134 A1 FR2814134 A1 FR 2814134A1
- Authority
- FR
- France
- Prior art keywords
- axis
- spring
- support
- mounting
- wiper arm
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
- B60S1/34—Wiper arms; Mountings therefor
- B60S1/3411—Wiper arms; Mountings therefor with means for varying wiper-blade pressure on windshield during operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
- B60S1/34—Wiper arms; Mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
- B60S1/34—Wiper arms; Mountings therefor
- B60S1/3422—Means arranged in the wiper structure to lift the arm at extremes of wipe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/0452—Position of the wipers relative to the vehicle
- B60S1/0455—Device for lifting the wipers off the screen in its parking position or at extremes of wipe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
- B60S1/34—Wiper arms; Mountings therefor
- B60S1/3488—Means for mounting wiper arms onto the vehicle
- B60S1/3493—Means for mounting the wiper shaft in the wiper bearing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
Description
<Desc/Clms Page number 1> <Desc / Clms Page number 1>
Dispositif de montage à délestage de balai d'essuie-glace
La présente invention concerne un dispositif de montage de balais d'essuie-glace pour vitre, notamment pour un véhicule et particulièrement un véhicule automobile, pour permettre le délestage des balais pendant leur fonctionnement, aux deux extrémités de leur course angulaire, c'est-à-dire dans les positions nommées traditionnellement arrêt-fixe (AF, position basse) et opposée-arrêt-fixe (OAF, position haute). Load-shedding wiper blade mounting device
The present invention relates to a device for mounting windscreen wiper blades, in particular for a vehicle and particularly a motor vehicle, to allow the shedding of the blades during their operation, at both ends of their angular travel, that is to say ie in the positions traditionally called stop-fixed (AF, low position) and opposite-stop-fixed (OAF, high position).
Dans ces deux positions, la lame doit se retourner. Or les balais d'essuie-glace sont maintenus en appuie contre la vitre par un ressort, généralement un ressort hélicoïdal de traction accroché par une première extrémité sur le bras et par la deuxième extrémité sur la tête d'entraînement ou support de bras, selon une ligne d'action sensiblement longitudinale telle que, lorsque le bras est au voisinage de sa position de service, le ressort tend à solliciter le bras de manière que celui-ci plaque la lame ou raclette contre la vitre, et, au contraire, lorsque le bras est proche de sa position relevée, le ressort agit sur le bras de manière à l'amener en appui contre des moyens de butée qui définissent cette position relevée. Afin de favoriser le retournement de la lame dans ses deux positions extrêmes, diminuer le bruit qu'il engendre et soulager la charnière d'essuie-glace, on a déjà proposé de délester l'essuie-glace de manière transitoire. In these two positions, the blade must turn over. However, the wiper blades are held in abutment against the window by a spring, generally a helical tension spring hooked by a first end on the arm and by the second end on the drive head or arm support, according to a substantially longitudinal line of action such that, when the arm is in the vicinity of its operating position, the spring tends to urge the arm so that the latter presses the blade or squeegee against the glass, and, on the contrary, when the arm is close to its raised position, the spring acts on the arm so as to bring it into abutment against stop means which define this raised position. In order to favor the turning of the blade in its two extreme positions, reduce the noise it generates and relieve the wiper hinge, it has already been proposed to unload the wiper temporarily.
Ainsi, le document US 5056182 fait connaître un dispositif de montage d'un balai d'essuie-glace pour véhicule automobile, comportant un axe rotatif portant à son extrémité transversalement le support du bras articulé d'un balai d'essuie-glace équipé d'un ressort d'appui du balai sur la vitre du véhicule, l'axe étant entraîné en rotation alternative par une manivelle de sortie et tournant dans un palier fixe. Un dispositif est prévu pour diminuer la pression du balai sur la vitre lorsqu'il arrive en position d'arrêt haute ou basse. Ce dispositif est constitué par un levier basculant articulé sur le support du bras ; sur un bras du levier est fixée la deuxième extrémité du ressort de traction, et sur l'autre bras est monté un galet ; le levier bascule lors de la rotation alternée des essuie-glace grâce à une came que suit le galet porté par le levier basculant. La came est disposée de manière annulaire autour de l'axe rotatif, sous le support de bras. Lors du Thus, document US 5056182 discloses a device for mounting a wiper blade for a motor vehicle, comprising a rotary axis carrying at its end transversely the support of the articulated arm of a wiper blade equipped with 'a spring for supporting the brush on the vehicle window, the axis being driven in alternating rotation by an output crank and rotating in a fixed bearing. A device is provided for reducing the pressure of the brush on the glass when it reaches the high or low stop position. This device consists of a tilting lever articulated on the arm support; on one arm of the lever is fixed the second end of the tension spring, and on the other arm is mounted a roller; the lever switches during the alternating rotation of the windscreen wipers thanks to a cam that follows the roller carried by the tilting lever. The cam is arranged annularly around the rotary axis, under the arm support. During the
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basculement du levier, la ligne d'action du ressort de traction est modifiée, et dans les deux positions extrêmes, la pression de la lame est réduite. Quoique le principe d'un tel dispositif soit a priori satisfaisant, sa réalisation pratique ne laisse pas de poser des problèmes. En effet, il apparaît très difficile de loger tout le mécanisme, notamment le levier articulé et son galet suiveur, dans un espace aussi restreint que celui du carter de balai. De plus, la présence du levier et du galet suiveur complique le montage des porte-balais, qui est déjà une opération délicate en soi et nécessite l'utilisation de cales d'aide au montage sur chaîne. tilting of the lever, the line of action of the tension spring is modified, and in the two extreme positions, the pressure of the blade is reduced. Although the principle of such a device is a priori satisfactory, its practical implementation does not pose problems. Indeed, it appears very difficult to accommodate the entire mechanism, in particular the articulated lever and its follower roller, in a space as small as that of the brush housing. In addition, the presence of the lever and the follower roller complicates the mounting of the brush holders, which is already a delicate operation in itself and requires the use of chocks for assistance in mounting on the chain.
Le but de l'opération est de trouver une autre possibilité de réaliser le dispositif de délestage des balais, qui ne présente pas ces inconvénients. The purpose of the operation is to find another possibility of making the device for shedding the brushes, which does not have these drawbacks.
L'invention atteint son but grâce à un dispositif de montage d'un balai d'essuie-glace pour véhicule automobile, comportant un axe rotatif portant à son extrémité transversalement le support du bras articulé d'un balai d'essuie-glace équipé d'un ressort d'appui du balai sur la vitre du véhicule, l'axe étant entraîné en rotation alternative par une manivelle de sortie et tournant dans un palier fixe, un dispositif étant prévu pour diminuer la pression du balai sur la vitre lorsqu'il arrive en position d'arrêt haute ou basse, caractérisé en ce que ce dispositif est constitué par un dispositif d'enfoncement axial transitoire du support de balai. En effet, plutôt que de déplacer le seul point de fixation du ressort sur le support, la Demanderesse propose de déplacer l'intégralité du support lui-même, ce qui peut se réaliser de différentes manières qui ne nécessitent pas de loger un mécanisme directement dans le carter de balai. En abaissant le support, c'est-à-dire à la fois l'articulation du bras et le point d'attache du ressort, alors que le point d'appui du balai reste au même niveau, on diminue le moment exercé par le ressort et donc la force d'appui. The invention achieves its object thanks to a device for mounting a wiper blade for a motor vehicle, comprising a rotary axis carrying at its end transversely the support of the articulated arm of a wiper blade equipped with '' a spring for supporting the brush on the vehicle window, the axis being driven in alternating rotation by an output crank and rotating in a fixed bearing, a device being provided for reducing the pressure of the brush on the window when arrives in high or low stop position, characterized in that this device is constituted by a device for transient axial driving in of the brush holder. Indeed, rather than moving the single point of attachment of the spring on the support, the Applicant proposes to move the entire support itself, which can be done in different ways which do not require housing a mechanism directly in the broom housing. By lowering the support, that is to say both the articulation of the arm and the point of attachment of the spring, while the bearing point of the brush remains at the same level, the moment exerted by the spring and therefore the supporting force.
De manière préférée, l'axe rotatif d'entraînement de l'essuie-glace est monté coulissant dans le palier fixe et ledit dispositif d'abaissement du support de balai est un dispositif d'enfoncement axial de l'axe portant le support de balai. Preferably, the rotary drive axis of the wiper is slidably mounted in the fixed bearing and said device for lowering the brush support is a device for axially driving the axis carrying the brush support. .
Il est possible de réaliser l'enfoncement transitoire de l'axe de plusieurs manières, mais, de manière encore préférée, le dispositif d'enfoncement d'axe comprend une came formée entre l'axe et le palier fixe, à un endroit où son implantation est la moins perturbante pour It is possible to achieve transient insertion of the axis in several ways, but, more preferably, the axis insertion device comprises a cam formed between the axis and the fixed bearing, at a place where its implantation is the least disturbing for
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l'environnement, ce qui peut être sur le palier, la bague, l'axe ou même la manivelle. the environment, which can be on the bearing, the ring, the axle or even the crank.
Avantageusement, ladite came est formée sur une surface annulaire du palier fixe (ou de sa bague intérieure) et coopère avec un ergot suiveur lié à l'axe, par exemple formé directement sur l'axe ou sur la manivelle de sortie qui entraîne l'axe. Advantageously, said cam is formed on an annular surface of the fixed bearing (or of its inner ring) and cooperates with a follower lug linked to the axis, for example formed directly on the axis or on the output crank which drives the axis.
La came coopère avec un ressort antagoniste disposé entre le palier fixe et un élément d'appui lié à l'axe, par exemple une butée formée sur l'axe, la manivelle elle-même ou le support de bras d'essuie-glace. The cam cooperates with an opposing spring disposed between the fixed bearing and a support element linked to the axis, for example a stop formed on the axis, the crank itself or the wiper arm support.
Une butée supplémentaire, par exemple sous forme de circlips, peut être prévue pour limiter la course basse de l'axe. An additional stop, for example in the form of a circlip, can be provided to limit the lower stroke of the axis.
L'invention sera mieux comprise et d'autres avantages et caractéristiques seront mis en évidence à la lecture de la description suivante, se référant aux dessins annexés sur lesquels : - la figure 1 est une vue de côté schématique, avec coupe partielle, d'un premier mode de réalisation du dispositif de montage conforme à l'invention, en position haute ; - la figure 2 est une vue de côté du même dispositif, après une
rotation l'ayant fait passé en position basse, du dispositif de la figure 1 ; - la figure 3 est une vue schématique agrandie du dessous du palier formant came ; les figures 4 et 5 sont des vues analogues aux figures 1 et 2 d'une variante de réalisation. The invention will be better understood and other advantages and characteristics will be highlighted on reading the following description, referring to the attached drawings in which: - Figure 1 is a schematic side view, with partial section, of a first embodiment of the mounting device according to the invention, in the high position; - Figure 2 is a side view of the same device, after a
rotation having made it pass in the low position, of the device of FIG. 1; - Figure 3 is an enlarged schematic view of the underside of the cam bearing; Figures 4 and 5 are views similar to Figures 1 and 2 of an alternative embodiment.
Le dispositif de montage comprend un axe de sortie 1 solidaire d'une manivelle de sortie 2 reliée à une tringlerie de commande de mouvement d'essuie-glace non représentée. L'axe 2 est guidé en rotation dans un palier fixe 3 à bague intérieure 4. Le point de cône ou sommet 5 de l'axe 1 comporte une portée conique 6 coopérant avec une portée conique 7 d'un support (ou tête ou entraîneur) transversal 8 emmanché et bloqué sur l'axe 1. Le support transversal 8 porte l'articulation 9 du porte-balai 10 et un ressort hélicoïdal de traction 11 relie un point relativement éloigné du porte-balai
10 à un point d'ancrage 12 du support 8 situé plus bas que l'articulati on 9 de manière à exercer un couple sollicitant en permanence le porte-balai et le The mounting device comprises an outlet shaft 1 secured to an outlet crank 2 connected to a linkage for controlling the wiper movement, not shown. The axis 2 is guided in rotation in a fixed bearing 3 with an inner ring 4. The cone point or apex 5 of the axis 1 has a conical bearing 6 cooperating with a conical bearing 7 of a support (or head or driver ) transverse 8 fitted and locked on the axis 1. The transverse support 8 carries the articulation 9 of the brush holder 10 and a helical tension spring 11 connects a point relatively distant from the brush holder
10 to an anchor point 12 of the support 8 located lower than the articulation 9 so as to exert a torque which permanently urges the brush holder and the
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balai vers la vitre à essuyer. Tous ces éléments sont classiques et n'ont pas besoin d'être plus amplement détaillés. broom towards the window to be wiped. All of these are classic and do not need to be further detailed.
Selon l'invention, la bague 4 du palier permet aussi le coulissement de l'axe 1 entre une position haute et une position basse. According to the invention, the ring 4 of the bearing also allows the axis 1 to slide between a high position and a low position.
La surface annulaire inférieure 13 du palier comporte une came annulaire formée par deux plateaux 14,14'précédés d'une rampe 15,15'. Les rampes 15 et 15'sont séparées angulairement par un angle a correspondant à l'angle de balayage depuis la position AF, marquée par la partie de came 14,15 jusqu'à la position OAF, marquée par la partie de came 14', 15'. The lower annular surface 13 of the bearing comprises an annular cam formed by two plates 14, 14 ′ preceded by a ramp 15, 15 '. The ramps 15 and 15 'are angularly separated by an angle a corresponding to the scanning angle from the position AF, marked by the cam part 14, 15 to the position OAF, marked by the cam part 14', 15 '.
Un ergot 16 formé sur l'axe 1 coopère lors de sa rotation avec la came 14,15, 14', 15'. Un ressort hélicoïdal de compression 17 est interposé entre le palier 3 et la manivelle 2 (figures 1 à 3) ou entre le palier 3 et le support 8 de bras d'essuie-glace (figures 4 et 5) pour solliciter en permanence l'axe 1 (auquel est liée la manivelle 2) vers le bas. Un circlips 18 sert de butée basse de l'axe vers le bas dans le mode de réalisation des figures 1 à 3, cette butée étant réalisée directement par le ressort 17 comprimé dans le mode de réalisation des figures 4 et 5. La position haute de l'axe 1 est définie par la portée de l'ergot suiveur 16 sur la came du palier 3. A lug 16 formed on the axis 1 cooperates during its rotation with the cam 14, 15, 14 ', 15'. A helical compression spring 17 is interposed between the bearing 3 and the crank 2 (Figures 1 to 3) or between the bearing 3 and the support 8 of the wiper arm (Figures 4 and 5) to permanently urge the axis 1 (to which the crank 2 is linked) downwards. A circlip 18 serves as a bottom stop of the axis down in the embodiment of Figures 1 to 3, this stop being produced directly by the spring 17 compressed in the embodiment of Figures 4 and 5. The high position of axis 1 is defined by the range of the follower lug 16 on the bearing cam 3.
Le fonctionnement du dispositif est le suivant. Dans la position représentée aux figures 1 et 4, l'axe 1 est en position haute maximale, et le balai d'essuie-glace exerce la pression maximale sur la vitre. Lorsque sous l'effet de la rotation de la manivelle 2, l'axe tourne et l'ergot parcourt la zone d'angle a de la came puis attaque une rampe 15 ou 15', en entraînant l'axe 1 avec lui vers le bas, jusqu'à atteindre un des plateaux 14 ou 14 ; l'axe 1 est alors dans sa position la plus basse, et la pression exercée par le balai d'essuie-glace est minimale. Quand la rotation de la manivelle 2 alterne, les mêmes étapes se répètent en sens inverse, la montée de l'axe étant assurée par le ressort 17. The operation of the device is as follows. In the position shown in Figures 1 and 4, the axis 1 is in the maximum high position, and the wiper blade exerts the maximum pressure on the window. When under the effect of the rotation of the crank 2, the axis rotates and the lug traverses the zone of angle a of the cam then attacks a ramp 15 or 15 ′, driving the axis 1 with it towards the low, until reaching one of the plates 14 or 14; axis 1 is then in its lowest position, and the pressure exerted by the wiper blade is minimal. When the rotation of the crank 2 alternates, the same steps are repeated in opposite directions, the rise of the axis being ensured by the spring 17.
Quoique l'invention fonctionne particulièrement bien avec un ressort d'appui d'essuie-glace classique constitué par un ressort de traction disposé comme il a été décrit, elle n'est pas limitée à ce type de ressort, du moment que le ressort utilisé est tel que le couple exercé par sa force de rappel diminue avec l'enfoncement de l'axe. Although the invention works particularly well with a conventional wiper support spring constituted by a tension spring arranged as described, it is not limited to this type of spring, as long as the spring used is such that the torque exerted by its return force decreases with the depression of the axis.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0011771A FR2814134B1 (en) | 2000-09-15 | 2000-09-15 | WINDSCREEN WIPER BLADE MOUNTING DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0011771A FR2814134B1 (en) | 2000-09-15 | 2000-09-15 | WINDSCREEN WIPER BLADE MOUNTING DEVICE |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2814134A1 true FR2814134A1 (en) | 2002-03-22 |
FR2814134B1 FR2814134B1 (en) | 2003-01-17 |
Family
ID=8854333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR0011771A Expired - Fee Related FR2814134B1 (en) | 2000-09-15 | 2000-09-15 | WINDSCREEN WIPER BLADE MOUNTING DEVICE |
Country Status (1)
Country | Link |
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FR (1) | FR2814134B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008047694A1 (en) * | 2008-09-18 | 2010-03-25 | GM Global Technology Operations, Inc., Detroit | Windscreen wiper device for e.g. multipart rear door of vehicle i.e. motor vehicle, has wiper blade lying at window in contact position, and spaced apart from windscreen surface in raised position |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2691186A (en) * | 1951-10-29 | 1954-10-12 | Trico Products Corp | Windshield cleaner |
US3026555A (en) * | 1959-05-23 | 1962-03-27 | Dudley Walter | Windscreen wipers |
US4439886A (en) * | 1981-03-30 | 1984-04-03 | Honda Giken Kogyo Kabushiki Kaisha | Wiper device |
US4472854A (en) * | 1981-06-16 | 1984-09-25 | Itt Industries, Inc. | Windshield wiper installation |
US5056128A (en) | 1989-04-17 | 1991-10-08 | George Thompson | X-ray filtration apparatus |
US5056182A (en) * | 1989-09-08 | 1991-10-15 | Aisin Seiki Kabushiki Kaisha | Wiper structure with variable wiping pressure |
US5426815A (en) * | 1994-07-08 | 1995-06-27 | Ford Motor Company | Wiper system including an adjustable arm load mechanism |
-
2000
- 2000-09-15 FR FR0011771A patent/FR2814134B1/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2691186A (en) * | 1951-10-29 | 1954-10-12 | Trico Products Corp | Windshield cleaner |
US3026555A (en) * | 1959-05-23 | 1962-03-27 | Dudley Walter | Windscreen wipers |
US4439886A (en) * | 1981-03-30 | 1984-04-03 | Honda Giken Kogyo Kabushiki Kaisha | Wiper device |
US4472854A (en) * | 1981-06-16 | 1984-09-25 | Itt Industries, Inc. | Windshield wiper installation |
US5056128A (en) | 1989-04-17 | 1991-10-08 | George Thompson | X-ray filtration apparatus |
US5056182A (en) * | 1989-09-08 | 1991-10-15 | Aisin Seiki Kabushiki Kaisha | Wiper structure with variable wiping pressure |
US5426815A (en) * | 1994-07-08 | 1995-06-27 | Ford Motor Company | Wiper system including an adjustable arm load mechanism |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008047694A1 (en) * | 2008-09-18 | 2010-03-25 | GM Global Technology Operations, Inc., Detroit | Windscreen wiper device for e.g. multipart rear door of vehicle i.e. motor vehicle, has wiper blade lying at window in contact position, and spaced apart from windscreen surface in raised position |
Also Published As
Publication number | Publication date |
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FR2814134B1 (en) | 2003-01-17 |
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