WO1994020053A1 - One-piece sun visor made of a cellular thermoplastic material - Google Patents

One-piece sun visor made of a cellular thermoplastic material Download PDF

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Publication number
WO1994020053A1
WO1994020053A1 PCT/FR1993/000241 FR9300241W WO9420053A1 WO 1994020053 A1 WO1994020053 A1 WO 1994020053A1 FR 9300241 W FR9300241 W FR 9300241W WO 9420053 A1 WO9420053 A1 WO 9420053A1
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WO
WIPO (PCT)
Prior art keywords
visor
curved
internal
edge
contour
Prior art date
Application number
PCT/FR1993/000241
Other languages
French (fr)
Inventor
Gilbert Tavernier
Original Assignee
Gilbert Tavernier
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
Priority to FR9110454A priority Critical patent/FR2681004A1/en
Application filed by Gilbert Tavernier filed Critical Gilbert Tavernier
Priority to PCT/FR1993/000241 priority patent/WO1994020053A1/en
Priority to AU37562/93A priority patent/AU3756293A/en
Publication of WO1994020053A1 publication Critical patent/WO1994020053A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • B29C44/5627—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching
    • B29C44/5636—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching with the addition of heat
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B1/00—Hats; Caps; Hoods
    • A42B1/018—Hats; Caps; Hoods with means for protecting the eyes, ears or nape, e.g. sun or rain shields; with air-inflated pads or removable linings
    • A42B1/0181—Hats; Caps; Hoods with means for protecting the eyes, ears or nape, e.g. sun or rain shields; with air-inflated pads or removable linings with means for protecting the eyes
    • A42B1/0182—Peaks or visors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/04—Eye-masks ; Devices to be worn on the face, not intended for looking through; Eye-pads for sunbathing
    • A61F9/045—Eye-shades or visors; Shields beside, between or below the eyes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only

Definitions

  • the object of the invention relates to the technical sector of personal objects and more particularly to that of headgear-
  • the sun visor must offer, thanks to a projecting part suitably shaped and stable above the eyes, good protection against glare, as well as a possibility of keeping this projecting part in a stable and comfortable position on the head of the user.
  • the models offered are made from plate materials and have two distinct parts: a part projecting above the eyes to which is added another part, matching the shape of the forehead, intended to maintain the whole on the user's head.
  • the method of assembling these two parts constitutes an important difficulty, it varies according to the materials used and contributes to the more or less good stability of the projecting part.
  • the visor should be light, comfortable and unlikely to be permanently deformed.
  • Cellular plastic materials have so far been used to obtain flat profiles of visors by cutting, intended to be curved on the head of the user. They are also used to equip the internal face of the band part of certain visors to make their wearing more comfortable. The chemical composition and cellular structure of these materials are variable and confer the characteristics that we know.
  • the invention aims to use the thermoplastic qualities of some of these materials during a shaping process not used to date to manufacture visors and which however allows the production of a one-piece visor, the architecture is very advantageous: in fact, there is no addition between them of a part projecting above the eyes and another matching the forehead, as it is for example described in document 6 BA - 2 039 725 (H. SAWASTKY).
  • the monobloc visor thus obtained, compared to flat visors cut out of cellular plastic material, has the advantage of presenting a surface • able to marry the forehead of the user. This surface can come directly from the projecting part thanks to a triangular shape which offers advantageous characteristics of resistance to deformation. In all cases, the monobloc visor has a good seat on the forehead.
  • a tool consists of two parts, one of which is movable relative to the other. Each of the parts has a conformal imprint.
  • the tooling successively adopts two positions: an open position when the gap between the two parts is sufficient, either to insert a plate of cellular thermoplastic material, or to remove this same plate after its shaping; a closed position when the two parts are brought together so as to obtain from their respective imprints the conformation of the visor.
  • a plate of cellular thermoplastic material heated to plasticity temperature is therefore introduced between the two parts of the open tool.
  • a certain pressure is exerted in order to bring the tool in the closed position; we wait until the cellular material has cooled, then we open the tooling to remove the permanently shaped material between the two cavities.
  • the shape obtained is close to that of the hollow volume defined by them.
  • each part of the mold has a junction surface of small width which circumscribes the imprint. These two surfaces are brought approximately one near the other by the closure of the tool. On each of these surfaces, the internal perimeter defines the outline of the visor part formed by the corresponding imprint.
  • the cellular thermoplastic material engaged in the tooling has a total surface calculated in order to extend beyond the external perimeter of the junction surfaces. When the tooling is closed under the effect of pressure, the two junction surfaces have moved closer to each other, greatly reducing by compression the material they enclose. The thickness reduction achieved depends on the nature of the thermoplastic transformed, the width of the junction surface, and the pressure exerted.
  • the orientation of the indentations in the tooling is defined as well as the orientation of the junction surfaces according to the rules of the art in order to facilitate the thermoforming effect and the removal of the transformed material. Then, on the shaped material taken out of the tool, a cut is made which joins the two contour lines formed respectively by the junction surfaces.
  • the visor is now ready to be the subject of known operations such as the addition of a headband strap or the installation of a bias stitched around the periphery for example.
  • the cellular plastic material is in the form of a plate whose surfaces are parallel and the thickness constant. A portion of plate, of sufficient surface and thickness, is therefore heated to plasticity temperature and shaped under the action of the tool. The modification of shape is obtained thanks to the plasticity of the constitutive way of the cell walls and to the deformation of the original cellular structure.
  • the process makes it possible to obtain different volumes of visors from plates of cellular thermoplastic material of different thicknesses. Before being shaped in the tooling, these plates can also be coated with finishing materials such as certain stretch textiles. The same transformation process will directly give a visor with the desired surface appearance. Certain similar elements of the transformation process are described in document PJP-A - 60,024,919 with regard to obtaining a helmet lining.
  • the application of the method is remarkable in that it makes it possible to form in a single operation a visor such that its volume directly presents two internal surfaces, joined by an edge, one of which is a curved surface projecting above the eyes, and the other a curved surface in accordance with the forehead of the user.
  • the volume defined by the operation is obtained by hot shaping of a thermoplastic material whose cell structure, even modified by shaping, plays an important role in the general stability of the shape obtained.
  • the technical effect generated by the visor depends on the specific qualities of the transformed cellular thermoplastic and on the general volume that it defines; the two factors are closely linked and are determined in relation to each other. It is thus desirable to use flexible and elastic cellular materials in order to confer on the visor obtained qualities of flexibility and possibilities of elastic deformation (advantageous characteristics when practicing certain sports). The use of more rigid cellular materials is also possible, and gives visors which can satisfy other needs. The transformation of closed cell polyethylene foam gives good results.
  • thermoplastic foam with closed or open cells can however be used according to the method described.
  • FIG. 1A shows the section of a shaping tool along the plane of symmetry AA of the visor formed between its two parts; the part (K), surrounded by a circle, is shown in enlargement ( Figure 1B); - Figure 2 shows a sectional view along the plane AA of symmetry of the visor thus obtained;
  • Figures 3 and 4 are respectively the left view and the corresponding top view of Figure 2;
  • FIG. 5 shows a type of visor obtained according to the method and are respectively: a sectional view along the plane of symmetry AA (fig. 5); a front view (fig. 6); a half-view on the left (fig. 7); a half view from above (fig. 8);
  • FIG. 9 a sectional view along the plane of symmetry AA (fig. 9); a front view (fig. 10); a half-view on the left (fig. 11); a half view from above (fig. 12); a perspective view of a half visor (fig. 13).
  • the tool (fig. 1) consists of two movable parts (a) and (b). It is shown here in the closed position (the opening being along a vertical axis (x)), after having inserted a portion of cellular thermoplastic material (c) heated to plasticity temperature between its two parts.
  • the junction surface (al) of the upper part (a) has moved closer to the junction surface (bl) of the lower part (b) by reducing the cellular material involved (cl) as shown in the enlargement (K ).
  • the cellular material (c) fills the hollow volume to form the visor, according to the conformation imprinted by the parts of the tool.
  • the thickness as seen in the sections of Figures 1 and 2, is almost identical over the entire surface of the visor. Thickness of the cellular material (c) before it is shaped in the mold may be greater than or approximately identical to that of the
  • FIG. 2 represents a section of the visor (vl) obtained, which corresponds to the section of the cellular material (c) formed in the tool (fig. 1) and which has been removed, by a cut joining the lines of contour (Ta) and (Tb), the excess material consisting of the adjoining parts (cl) and (c2).
  • the visor (vl) obtained directly has two internal curved surfaces (fl) and (f2) forming the internal edge (f3) and two external surfaces (el) and (e2) curved and respectively parallel to (fl) and (f2) forming the outer edge (e3).
  • the surfaces (fl) and (el) as well as the surfaces (f2) and (e2) meet by respective circular connections to delimit the edge edge (P) of the visor (vl).
  • Plate no. 2 shows in Figures 5, 6, 7, 8 a different type of visor obtained by this process.
  • the section of Figure 5 shows that the material engaged and shaped (c) has a variable thickness.
  • the visor (v2) (fig. 5) directly presents two internal curved surfaces (fl) and (f2) forming the internal edge (f3) and a single external surface (e2), connected by respective circular connections to the surface (f2 ) to form part of the contour edge (P) connecting the two lateral ends (fia), and connected to the surface (fl) by the upper edge (efl) which defines the other part of the outline (P) of the visor.
  • the cellular material which is inserted into the tooling has a sufficient thickness to constitute the thickest part appearing on section (c) (fig. 5) of the visor (v2).
  • section (c) fig. 5
  • the cellular material (c) which before its transformation by the tool had parallel surfaces, underwent, under the action of the latter, a certain reduction in thickness. This is due to the compression of the material which is accomplished at the same time as the shaping by the closing effect of the two parts of the tool.
  • the visor (v2) obtained is a protruding volume, curved above the eyes, which directly presents a large and stable bearing surface, conformed to the forehead of the user.
  • the cellular structure of this volume is that of the original thermoplastic material, modified by the shaping operation, and more preserved in the thick parts than in the thin parts which result from the compression effect.
  • the visor (v2) has a contour part (P), formed by the junction edge of the surfaces (e2) and (f2), tapered and aerodynamic. Approaching this contour, the cellular material (c) forming a stiffener is more and more compressed, therefore denser.
  • the zone of greater thickness of cellular material is not detectable by the sole gaze of an outside observer, and therefore does not harm the aesthetics of all.
  • the triangular shape therefore allows the presence of the surface (fl) by which the visor (v2) is in place on the forehead of the user. It also allows good resis t ance to deformation by its stiffening effect and, according to the flexible and elastic qualities of the cell selected material provides excellent elastic return to the original shape after deformation thereof.
  • Plate no. 3 shows in Figures 9, 10, 11, 12, 13 another type of visor (v3) obtained by this process, and which is based on the model (v2) of the board no. 2. It differs from the latter in that an annex part is formed during the operation.
  • This part of the model (v3) has a surface (fl) of which a lower part is identical, by the orientation of the curve, to the surface (fl) presented by the visor (v2); it also has an external surface (el) parallel to the surface (fl).
  • the surface (el) is connected to the surface (e2) by the edge (e3); it is connected to the surface (fl) by respective circular connections to form the upper part of the outline (P).
  • the surfaces (e2) and (f2) connect in the same way to form the other part of the contour (P) which circumscribes the projecting part.
  • the surface (fl) is connected to the surface (f2) by the internal edge (f3).
  • the cellular material which forms the projecting part is thermocompressed in the same way as (v2) (pi. No. 2) with the same advantages.
  • the part formed by the surfaces (el) and (fl) also has a thickness reduced by compression. It has the advantage of being resistant and offering by its internal surface (fl) a good seat on the forehead. It can be used for positioning a headband strap that holds the visor on the user's forehead or for positioning a classic cap part, covering the user's head, and transforming the visor into a full cap.
  • the joining surfaces of the two parts of the visor shaping tool (v3) are located near its outline (P).
  • Figures 10, 11, 12 are corresponding and help to define the volume.
  • Figure 13 is a perspective view which shows that the surface (fl) of a visor (v3) may include bosses
  • any visor obtained according to the method can include reliefs in the form of a bump or hollow of the rib (n), alveoli (1), or other type, to improve general stability or the possibilities of elastic deformation.
  • These surface aspects are obtained during the shaping operation using suitable tools.
  • Other aspects for decorative or advertising purposes can be obtained in the same way.
  • visors (vl, v2, v3) obtained according to the description, are then added known elements, such as a headband flange (which holds the assembly on the front of the user) and possibly an interlayer absorbing sweat, positioned on the internal surface (fl). These elements are fixed by any means.

Abstract

A cellular thermoplastic material (c) is heated to its point of plasticity and inserted between two parts (a, b) of a tool assembly where it is shaped by squeezing together said parts (a, b), whereafter it is allowed to cool down before the tool assembly is opened. The resulting body has a curved surface projecting out over the eyes and joined to a curved surface fitting the wearer's forehead.

Description

VISIERE PARE-SOLEIL MONOBLOC EN MATERIAU CELLULAIRE THERMOPLASTIOUE MONOBLOCK SUN VISOR IN THERMOPLASTIOUS CELLULAR MATERIAL
L'objet de l'invention se rattache au secteur technique des objets personnels et plus particulièrement à celui de la chapellerie- La visière pare-soleil doit offrir, grâce à une partie en saillie conformée de façon appropriée et stable au-dessus des yeux, une bonne protection contre 1'éblouissement, ainsi qu'une possibilité de maintenir cette partie en saillie en position stable et confortable, sur la tête de l'utilisateur.The object of the invention relates to the technical sector of personal objects and more particularly to that of headgear- The sun visor must offer, thanks to a projecting part suitably shaped and stable above the eyes, good protection against glare, as well as a possibility of keeping this projecting part in a stable and comfortable position on the head of the user.
Généralement, les modèles proposés sont constitués à partir de matériaux en plaques et présentent deux parties distinctes : une partie en saillie au-dessus des yeux à laquelle est adjointe une autre partie, épousant la forme du front, destinée au maintien de l'ensemble sur la tête de l'utilisateur. Le mode d'assemblage de ces deux parties constitue une difficulté importante, il varie selon les matériaux employés et participe à la plus ou moins bonne stabilité de la partie en saillie.Generally, the models offered are made from plate materials and have two distinct parts: a part projecting above the eyes to which is added another part, matching the shape of the forehead, intended to maintain the whole on the user's head. The method of assembling these two parts constitutes an important difficulty, it varies according to the materials used and contributes to the more or less good stability of the projecting part.
En général, la visière doit être légère, confortable et peu susceptible de déformation permanente.In general, the visor should be light, comfortable and unlikely to be permanently deformed.
Les matériaux plastiques cellulaires sont utilisés jusqu'à présent pour obtenir par découpe des profilés plats de visières, destinés à être galbés sur la tête de l'utilisateur. On les utilise aussi pour équiper la face interne de la partie bandeau de certaines visières pour rendre leur port plus confortable. La composition chimique et la structure cellulaire de ces matériaux sont variables et confèrent les caractéristiques que l'on connaît.Cellular plastic materials have so far been used to obtain flat profiles of visors by cutting, intended to be curved on the head of the user. They are also used to equip the internal face of the band part of certain visors to make their wearing more comfortable. The chemical composition and cellular structure of these materials are variable and confer the characteristics that we know.
L'invention se donne pour but d'utiliser les qualités thermoplastiques de certains de ces matériaux au cours d'un procédé de mise en forme inemployé à ce jour pour fabriquer des visières et qui permet cependant la réalisation d'une visière monobloc dont l'architecture est très avantageuse : en effet, il n'y a pas adjonction entre elles d'une partie en saillie au-dessus des yeux et d'une autre épousant le front, comme il est par exemple décrit dans le document 6 B-A - 2 039 725 (H. SAWASTKY) . La visière monobloc ainsi obtenue, comparée aux visières plates découpées dans du matériau plastique cellulaire, a l'avantage de présenter une surface • apte à épouser le front de l'utilisateur. Cette surface peut être issue directement de la partie en saillie grâce à une forme triangulaire qui offre des caractéristiques avantageuses de résistance à la déformation. Dans tous les cas, la visière monobloc possède une bonne assise sur le front.The invention aims to use the thermoplastic qualities of some of these materials during a shaping process not used to date to manufacture visors and which however allows the production of a one-piece visor, the architecture is very advantageous: in fact, there is no addition between them of a part projecting above the eyes and another matching the forehead, as it is for example described in document 6 BA - 2 039 725 (H. SAWASTKY). The monobloc visor thus obtained, compared to flat visors cut out of cellular plastic material, has the advantage of presenting a surface • able to marry the forehead of the user. This surface can come directly from the projecting part thanks to a triangular shape which offers advantageous characteristics of resistance to deformation. In all cases, the monobloc visor has a good seat on the forehead.
Le procédé mis en œuvre est le suivant : un outillage est constitué de deux parties dont l'une est mobile par rapport à l'autre. Chacune des parties présente une empreinte de conformation. L'outillage adopte successivement deux positions : une position d'ouverture lorsque l'écart entre les deux parties est suffisant, soit pour insérer une plaque de matériau thermoplastique cellulaire, soit pour ôter cette même plaque après sa mise en forme ; une position de fermeture lorsque les deux parties sont rapprochées de façon à obtenir de leurs empreintes respectives la conformation de la visière.The process used is as follows: a tool consists of two parts, one of which is movable relative to the other. Each of the parts has a conformal imprint. The tooling successively adopts two positions: an open position when the gap between the two parts is sufficient, either to insert a plate of cellular thermoplastic material, or to remove this same plate after its shaping; a closed position when the two parts are brought together so as to obtain from their respective imprints the conformation of the visor.
On introduit donc entre les deux parties de l'outillage ouvert une plaque de matériau thermoplastique cellulaire chauffé à température de plasticité. On exerce une certaine pression afin d'amener l'outillage en position fermée ; on attend que le matériau cellulaire ait refroidi, puis on ouvre l'outillage pour retirer le matériau conformé de façon définitive entre les deux empreintes. La forme obtenue est proche de celle du volume en creux défini par celles-ci.A plate of cellular thermoplastic material heated to plasticity temperature is therefore introduced between the two parts of the open tool. A certain pressure is exerted in order to bring the tool in the closed position; we wait until the cellular material has cooled, then we open the tooling to remove the permanently shaped material between the two cavities. The shape obtained is close to that of the hollow volume defined by them.
Un moyen de mise en œuvre consiste à définir un contour de la visière de la façon suivante : chacune des parties du moule présente une surface de jonction de faible largeur qui circonscrit l'empreinte. Ces deux surfaces sont amenées approximativement l'une près de l'autre par la fermeture de l'outillage. Sur chacune de ces surfaces, le périmètre interne définit le contour de la partie de visière formée par l'empreinte correspondante. Lors d'une transformation, le matériau thermoplastique cellulaire engagé dans l'outillage présente une surface totale calculée afin de déborder du périmètre externe des surfaces de jonction. Lorsque l'outillage est fermé sous l'effet de la pression, les deux surfaces de jonction se sont rapprochées l'une de l'autre en réduisant fortement par compression le matériau qu'elles enserrent. La réduction d'épaisseur réalisée dépend de la nature du thermoplastique transformé, de la largeur de la surface de jonction, et de la pression exercée. On définit l'orientation des empreintes dans l'outillage ainsi que l'orientation des surfaces de jonction selon les règles de l'art afin de faciliter l'effet de thermoformage et le retrait du matériau transformé. Ensuite, sur le matériau en forme sorti de l'outillage, on opère une découpe qui joint les deux lignes de contour formées respectivement par les surfaces de jonction. La visière est maintenant prête pour être l'objet d'opérations connues telles que l'adjonction d'une bride serre-tête ou la pose d'un biais cousu sur le pourtour par exem le.One means of implementation consists in defining an outline of the visor in the following manner: each part of the mold has a junction surface of small width which circumscribes the imprint. These two surfaces are brought approximately one near the other by the closure of the tool. On each of these surfaces, the internal perimeter defines the outline of the visor part formed by the corresponding imprint. During a transformation, the cellular thermoplastic material engaged in the tooling has a total surface calculated in order to extend beyond the external perimeter of the junction surfaces. When the tooling is closed under the effect of pressure, the two junction surfaces have moved closer to each other, greatly reducing by compression the material they enclose. The thickness reduction achieved depends on the nature of the thermoplastic transformed, the width of the junction surface, and the pressure exerted. The orientation of the indentations in the tooling is defined as well as the orientation of the junction surfaces according to the rules of the art in order to facilitate the thermoforming effect and the removal of the transformed material. Then, on the shaped material taken out of the tool, a cut is made which joins the two contour lines formed respectively by the junction surfaces. The visor is now ready to be the subject of known operations such as the addition of a headband strap or the installation of a bias stitched around the periphery for example.
Examinons maintenant d'autres aspects de la transformation : le matériau plastique cellulaire se présente sous la forme de plaque dont les surfaces sont parallèles et l'épaisseur constante. Une portion de plaque, de surface et d'épaisseur suffisantes, est donc chauffée à température de plasticité et conformée sous l'action de l'outillage. La modification de forme s'obtient grâce à la plasticité de la manière constitutive des parois cellulaires et à la déformation de la structure cellulaire d'origine.Let us now examine other aspects of the transformation: the cellular plastic material is in the form of a plate whose surfaces are parallel and the thickness constant. A portion of plate, of sufficient surface and thickness, is therefore heated to plasticity temperature and shaped under the action of the tool. The modification of shape is obtained thanks to the plasticity of the constitutive way of the cell walls and to the deformation of the original cellular structure.
La compression du matériau cellulaire rend parfois nécessaire d'évacuer des gaz occlus qui, en formant des poches, peuvent gêner une bonne conformation du matériau. Des évents sont alors mis en place sur l'outillage à proximité des zones d'occlusion de ces gaz. En règle générale, cette même compression entraîne une densification dans la zone où elle est exercée. Dans certains cas, selon les caractéristiques du thermoplastique utilisé, lorsqu'on ouvre l'outillage après avoir attendu un certain temps de refroidissement du matériau cellulaire mis en forme, ce dernier peut gonfler, et présenter ainsi un volume final plus important. Ceci est dû à la détente de gaz comprimé contenu dans les cellules. On peut résoudre cet inconvénient en sous-dimensionnant en tout ou partie le volume en creux défini par les empreintes. Pour la suite de la description, ce phénomène n'est pas pris en compte et nous considérons que le volume final du matériau cellulaire est assez proche de celui défini en creux par l'outillage.The compression of the cellular material sometimes makes it necessary to evacuate occluded gases which, by forming pockets, can hinder a good conformation of the material. Vents are then placed on the tool near the occlusion zones of these gases. As a rule, this same compression results in densification in the area where it is exerted. In certain cases, depending on the characteristics of the thermoplastic used, when the tool is opened after having waited for a certain cooling time of the shaped cellular material, the latter can swell, and thus present a greater final volume. This is due to the expansion of compressed gas contained in the cells. This drawback can be resolved by undersizing all or part of the hollow volume defined by the imprints. For the remainder of the description, this phenomenon is not taken into account and we consider that the final volume of the cellular material is quite close to that defined in hollow by the tooling.
Ainsi défini, le procédé permet d'obtenir différents volumes de visières à partir de plaques de matière thermoplastique cellulaire d'épaisseurs différentes. Avant leur mise en forme dans l'outillage, ces plaques peuvent par ailleurs être revêtues de matériaux de finition comme certains textiles extensibles. Le même procédé de transformation donnera directement une visière présentant l'aspect de surface souhaité. Certains éléments semblables du procédé de transformation sont décrits dans le document PJP-A - 60 024 919 à propos de l'obtention d'une garniture de casque.Thus defined, the process makes it possible to obtain different volumes of visors from plates of cellular thermoplastic material of different thicknesses. Before being shaped in the tooling, these plates can also be coated with finishing materials such as certain stretch textiles. The same transformation process will directly give a visor with the desired surface appearance. Certain similar elements of the transformation process are described in document PJP-A - 60,024,919 with regard to obtaining a helmet lining.
L'application du procédé est remarquable en ce qu'il permet de former en une seule opération une visière telle que son volume présente directement deux surfaces internes, jointes par une arête, dont l'une est une surface galbée en saillie au-dessus des yeux, et l'autre une surface galbée conformément au front de l'utilisateur. Le volume défini par l'opération s'obtient par façonnage à chaud d'un matériau thermoplastique dont la structure cellulaire, même modifiée par le façonnage, joue un rôle important dans la stabilité générale de la forme obtenue.The application of the method is remarkable in that it makes it possible to form in a single operation a visor such that its volume directly presents two internal surfaces, joined by an edge, one of which is a curved surface projecting above the eyes, and the other a curved surface in accordance with the forehead of the user. The volume defined by the operation is obtained by hot shaping of a thermoplastic material whose cell structure, even modified by shaping, plays an important role in the general stability of the shape obtained.
L'effet technique engendré par la visière dépend des qualités propres du thermoplastique cellulaire transformé et du volume général qu'elle définit ; les deux facteurs sont étroitement liés et se déterminent l'un en fonction de l'autre. Il est ainsi souhaitable d'utiliser des matériaux cellulaires souples et élastiques afin de conférer à la visière obtenue des qualités de souplesse et des possibilités de déformation élastique (caractéristiques avantageuses lorsqu'on pratique certains sports). L'emploi de matériaux cellulaires plus rigides est tout aussi possible, et donne des visières pouvant satisfaire d'autres besoins. La transformation de mousse de polyéthylène à cellules fermées donne de bons résultats.The technical effect generated by the visor depends on the specific qualities of the transformed cellular thermoplastic and on the general volume that it defines; the two factors are closely linked and are determined in relation to each other. It is thus desirable to use flexible and elastic cellular materials in order to confer on the visor obtained qualities of flexibility and possibilities of elastic deformation (advantageous characteristics when practicing certain sports). The use of more rigid cellular materials is also possible, and gives visors which can satisfy other needs. The transformation of closed cell polyethylene foam gives good results.
D'autres types de mousse thermoplastique à cellules fermées ou ouvertes sont cependant utilisables selon le procédé décrit. Ces caractéristiques ainsi que d'autres caractéristiques avantageuses de l'objet de la présente invention, apparaîtront ci-après plus précisément à l'examen de quelques formes présentées à titre illustratif mais non limitatif au regard des dessins annexés sur lesquels :Other types of thermoplastic foam with closed or open cells can however be used according to the method described. These characteristics, as well as other advantageous characteristics of the object of the present invention, will appear more precisely below on examining a few forms presented by way of illustration but not limitation with regard to the appended drawings in which:
- la figure 1A représente la section d'un outillage de conformation selon le plan de symétrie AA de la visière conformée entre ses deux parties ; la partie (K) , entourée d'un cercle, est figurée en agrandissement (figure 1B) ; - la figure 2 représente une vue en coupe selon le plan AA de symétrie de la visière ainsi obtenue ;- Figure 1A shows the section of a shaping tool along the plane of symmetry AA of the visor formed between its two parts; the part (K), surrounded by a circle, is shown in enlargement (Figure 1B); - Figure 2 shows a sectional view along the plane AA of symmetry of the visor thus obtained;
- les figures 3 et 4 sont respectivement la vue de gauche et la vue de dessus correspondantes de la figure 2 ;- Figures 3 and 4 are respectively the left view and the corresponding top view of Figure 2;
- les figures 5, 6, 7, 8 représentent un type de visière obtenu selon le procédé et sont respectivement : une vue en coupe selon le plan de symétrie AA (fig. 5) ; une vue de face (fig. 6) ; une demi-vue de gauche (fig. 7) ; une demi-vue de dessus (fig. 8) ;- Figures 5, 6, 7, 8 show a type of visor obtained according to the method and are respectively: a sectional view along the plane of symmetry AA (fig. 5); a front view (fig. 6); a half-view on the left (fig. 7); a half view from above (fig. 8);
- les figures 9, 10, 11, 12, 13 représentent un type de visière obtenu selon le procédé et sont respectivement : une vue en coupe selon le plan de symétrie AA (fig. 9) ; une vue de face (fig. 10) ; une demi-vue de gauche (fig. 11) ; une demi-vue de dessus (fig. 12) ; une vue en perspective d'une demi-visière (fig. 13) . Examinons la planche no. 1 :- Figures 9, 10, 11, 12, 13 show a type of visor obtained according to the method and are respectively: a sectional view along the plane of symmetry AA (fig. 9); a front view (fig. 10); a half-view on the left (fig. 11); a half view from above (fig. 12); a perspective view of a half visor (fig. 13). Let's take a look at plate no. 1:
L'outillage (fig. 1) se compose de deux parties mobiles (a) et (b) . Il est représenté ici en position fermée (l'ouverture se faisant selon un axe vertical (x)), après que l'on ait inséré une portion de matériau thermoplastique cellulaire (c) chauffé à température de plasticité entre ses deux parties. La surface de jonction (al) de la partie supérieure (a) s'est rapprochée de la surface de jonction (bl) de la partie inférieure (b) en réduisant la matière cellulaire engagée (cl) comme figuré sur l'agrandissement (K) . La matière cellulaire (c) emplit le volume en creux pour former la visière, selon la conformation imprimée par les parties de l'outillage. Sur ce type de visière (vl) l'épaisseur, telle qu'on la voit sur les sections de figures 1 et 2, est à peu près identique sur toute la surface de la visière. L'épaisseur du matériau cellulaire (c) avant sa mise en forme dans le moule peut être supérieure ou à peu près identique à celle duThe tool (fig. 1) consists of two movable parts (a) and (b). It is shown here in the closed position (the opening being along a vertical axis (x)), after having inserted a portion of cellular thermoplastic material (c) heated to plasticity temperature between its two parts. The junction surface (al) of the upper part (a) has moved closer to the junction surface (bl) of the lower part (b) by reducing the cellular material involved (cl) as shown in the enlargement (K ). The cellular material (c) fills the hollow volume to form the visor, according to the conformation imprinted by the parts of the tool. On this type of visor (vl) the thickness, as seen in the sections of Figures 1 and 2, is almost identical over the entire surface of the visor. Thickness of the cellular material (c) before it is shaped in the mold may be greater than or approximately identical to that of the
• volume en creux défini par l'outillage. Si elle est supérieure, il y a effet de compression lors de sa mise en forme dans l'outillage ; si elle est à peu près identique, il n'y a pas d'effet de compression. Dans les deux cas, le matériau cellulaire (c) est réduit dans sa partie (cl) comprise entre les deux surfaces de jonction (al) et (bl) ; cette réduction détermine ainsi les deux lignes de contour (Ta) et (Tb) . Logiquement, ces surfaces de jonction sont donc placées, selon la technique usuelle, à proximité du contour extérieur (P) de la visière (v2) , tel qu'on le voit sur les figures 2, 3 et 4. La partie (c2) du matériau cellulaire attenante à la partie (cl) n'est pas comprimée ; elle déborde l'extérieur des surfaces de jonction et constitue une marge lors de l'insertion du matériau dans l'outillage. • hollow volume defined by the tool. If it is greater, there is a compression effect when it is shaped in the tool; if it is about the same, there is no compression effect. In both cases, the cellular material (c) is reduced in its part (cl) between the two junction surfaces (al) and (bl); this reduction thus determines the two contour lines (Ta) and (Tb). Logically, these junction surfaces are therefore placed, according to the usual technique, near the outer contour (P) of the visor (v2), as seen in Figures 2, 3 and 4. The part (c2) cellular material adjacent to the part (cl) is not compressed; it extends beyond the exterior of the junction surfaces and constitutes a margin when the material is inserted into the tooling.
La figure 2 représente une coupe de la visière (vl) obtenue, qui correspond à la section du matériau cellulaire (c) mis en forme dans l'outillage (fig. 1) et dont on a ôté, par une découpe joignant les lignes de contour (Ta) et (Tb) , l'excédent de matière constitué des parties attenantes (cl) et (c2) . La visière (vl) obtenue présente directement deux surfaces internes galbées (fl) et (f2) formant l'arête interne (f3) et deux surfaces externes (el) et (e2) galbées et respectivement parallèles à (fl) et (f2) formant l'arête externe (e3). Les surfaces (fl) et (el) ainsi que les surfaces (f2) et (e2) se rejoignent par des raccords circulaires respectifs pour délimiter l'arête de contour (P) de la visière (vl) . La planche no. 2 représente par ses figures 5, 6, 7, 8 un type de visière différent obtenu selon ce procédé. La coupe de la figure 5 montre que la matière engagée et mise en forme (c) a une épaisseur variable. La visière (v2) (fig. 5) présente directement deux surfaces internes galbées (fl) et (f2) formant l'arête interne (f3) et une seule surface externe (e2) , reliée par raccords circulaires respectifs à la surface (f2) pour former une partie de l'arête de contour (P) reliant les deux extrémités latérales (fia) , et reliée à la surface (fl) par l'arête supérieure (efl) qui définit l'autre partie du contour (P) de la visière.FIG. 2 represents a section of the visor (vl) obtained, which corresponds to the section of the cellular material (c) formed in the tool (fig. 1) and which has been removed, by a cut joining the lines of contour (Ta) and (Tb), the excess material consisting of the adjoining parts (cl) and (c2). The visor (vl) obtained directly has two internal curved surfaces (fl) and (f2) forming the internal edge (f3) and two external surfaces (el) and (e2) curved and respectively parallel to (fl) and (f2) forming the outer edge (e3). The surfaces (fl) and (el) as well as the surfaces (f2) and (e2) meet by respective circular connections to delimit the edge edge (P) of the visor (vl). Plate no. 2 shows in Figures 5, 6, 7, 8 a different type of visor obtained by this process. The section of Figure 5 shows that the material engaged and shaped (c) has a variable thickness. The visor (v2) (fig. 5) directly presents two internal curved surfaces (fl) and (f2) forming the internal edge (f3) and a single external surface (e2), connected by respective circular connections to the surface (f2 ) to form part of the contour edge (P) connecting the two lateral ends (fia), and connected to the surface (fl) by the upper edge (efl) which defines the other part of the outline (P) of the visor.
Il est nécessaire que la matière cellulaire que l'on insère dans l'outillage présente une épaisseur suffisante pour constituer la partie la plus épaisse figurant sur la section (c) (fig. 5) de la visière (v2) . A l'examen de cette section, on voit que le matériau cellulaire (c) qui avant sa transformation par l'outillage, présentait des surfaces parallèles, a subi, sous l'action de ce dernier, une certaine réduction d'épaisseur. Celle-ci est due à la compression du matériau qui s'accomplit en même temps que la mise en forme par l'effet de fermeture des deux parties de l'outillage.It is necessary that the cellular material which is inserted into the tooling has a sufficient thickness to constitute the thickest part appearing on section (c) (fig. 5) of the visor (v2). On examination of this section, we see that the cellular material (c) which before its transformation by the tool, had parallel surfaces, underwent, under the action of the latter, a certain reduction in thickness. This is due to the compression of the material which is accomplished at the same time as the shaping by the closing effect of the two parts of the tool.
Ainsi le profil (c) défini par la visière sur le plan de coupeThus the profile (c) defined by the visor on the cutting plane
(fig. 5), présente une partie avant (cal et une partie arrière (cb) qui résultent de la compression opérée. De même, par compression la surface (fl) va en s'amenuisant vers son extrémité (fia). De ce fait, si l'on imagine des plans de section parallèles à AA et successifs se déplaçant du plan de symétrie vers l'extrémité latérale (fia) de la visière (v2) , ce profil de section obtenu sera de forme triangulaire formant raidisseur, ressemblant au profil (c) de la figure 5, mais dont l'épaisseur déterminée par la hauteur (h) sera d'autant plus faible que le profil sera situé près de l'extrémité(fig. 5), has a front part (cal and a rear part (cb) which result from the compression effected. Likewise, by compression the surface (fl) decreases towards its end (fia). done, if we imagine sectional planes parallel to AA and successive moving from the plane of symmetry towards the lateral end (fia) of the visor (v2), this section profile obtained will be of triangular shape forming stiffener, resembling profile (c) of Figure 5, but the thickness determined by the height (h) will be smaller the profile will be located near the end
(fia) . L'effet général produit est le suivant : la visière (v2) obtenue est un volume en saillie, galbé au-dessus des yeux, qui présente directement une surface d'appui importante et stable, conformée au front de l'utilisateur. La structure cellulaire de ce volume est celle du matériau thermoplastique original, modifiée par l'opération de mise en forme, et davantage préservée dans les parties épaisses que dans les parties minces qui résultent de l'effet de compression. La visière (v2) présente une partie de contour (P) , formée par l'arête de jonction des surfaces (e2) et (f2) , effilé et aérodynamique. A l'approche de ce contour, la matière cellulaire (c) formant raidisseur est de plus en plus comprimée, donc plus dense. La zone de plus forte épaisseur de matière cellulaire n'est pas décelable au seul regard d'un observateur extérieur, et ne nuit donc pas à l'esthétique de l'ensemble. La forme triangulaire permet donc la présence de la surface (fl) par laquelle la visière (v2) est bien en place sur le front de l'utilisateur. Elle permet aussi une bonne résistance à la déformation par son effet raidisseur et, selon les qualités souples et élastiques du matériau cellulaire choisi, permet un excellent retour élastique à la forme initiale après déformation de cette dernière.(fia). The general effect produced is as follows: the visor (v2) obtained is a protruding volume, curved above the eyes, which directly presents a large and stable bearing surface, conformed to the forehead of the user. The cellular structure of this volume is that of the original thermoplastic material, modified by the shaping operation, and more preserved in the thick parts than in the thin parts which result from the compression effect. The visor (v2) has a contour part (P), formed by the junction edge of the surfaces (e2) and (f2), tapered and aerodynamic. Approaching this contour, the cellular material (c) forming a stiffener is more and more compressed, therefore denser. The zone of greater thickness of cellular material is not detectable by the sole gaze of an outside observer, and therefore does not harm the aesthetics of all. The triangular shape therefore allows the presence of the surface (fl) by which the visor (v2) is in place on the forehead of the user. It also allows good resis t ance to deformation by its stiffening effect and, according to the flexible and elastic qualities of the cell selected material provides excellent elastic return to the original shape after deformation thereof.
Les surfaces de jonction des deux parties de conformation de (v2) sont situées à proximité de son contour (P) . Les figures 6, 7, 8 sont correspondantes et aident à la définition du volume.The joining surfaces of the two shaping parts of (v2) are located near its outline (P). Figures 6, 7, 8 are corresponding and help to define the volume.
La planche no. 3 représente par ses figures 9, 10, 11, 12, 13 un autre type de visière (v3) obtenu selon ce procédé, et qui a pour base le modèle (v2) dé la planche no. 2. Il diffère de ce dernier en ce qu'une partie annexe est formée au cours de l'opération. Cette partie du modèle (v3) présente une surface (fl) dont une partie inférieure est identique, par l'orientation du galbe, à la surface (fl) que présente la visière (v2) ; elle présente aussi une surface externe (el) parallèle à la surface (fl) . La surface (el) est reliée à la surface (e2) par l'arête (e3) ; elle est reliée à la surface (fl) par raccords circulaires respectifs pour former la partie supérieure du contour (P) . Les surfaces (e2) et (f2) se relient de la même façon pour former l'autre partie du contour (P) qui circonscrit la partie en saillie. La surface (fl) est reliée à la surface (f2) par l'arête interne (f3) .Plate no. 3 shows in Figures 9, 10, 11, 12, 13 another type of visor (v3) obtained by this process, and which is based on the model (v2) of the board no. 2. It differs from the latter in that an annex part is formed during the operation. This part of the model (v3) has a surface (fl) of which a lower part is identical, by the orientation of the curve, to the surface (fl) presented by the visor (v2); it also has an external surface (el) parallel to the surface (fl). The surface (el) is connected to the surface (e2) by the edge (e3); it is connected to the surface (fl) by respective circular connections to form the upper part of the outline (P). The surfaces (e2) and (f2) connect in the same way to form the other part of the contour (P) which circumscribes the projecting part. The surface (fl) is connected to the surface (f2) by the internal edge (f3).
La matière cellulaire qui forme la partie en saillie est thermocomprimée de la même manière que (v2) (pi. no. 2) avec les mêmes avantages. La partie formée par les surfaces (el) et (fl) a également une épaisseur réduite par compression. Elle a pour avantage d'être résistante et d'offrir par sa surface interne (fl) une bonne assise sur le front. Elle peut servir au positionnement d'une bride serre-tête qui maintient la visière sur le front de l'utilisateur ou au positionnement d'une partie coiffe classique, recouvrant la tête de l'utilisateur, et transformant la visière en casquette complète. Les surfaces de jonction des deux parties de l'outillage de conformation de la visière (v3) sont situées à proximité de son contour (P) .The cellular material which forms the projecting part is thermocompressed in the same way as (v2) (pi. No. 2) with the same advantages. The part formed by the surfaces (el) and (fl) also has a thickness reduced by compression. It has the advantage of being resistant and offering by its internal surface (fl) a good seat on the forehead. It can be used for positioning a headband strap that holds the visor on the user's forehead or for positioning a classic cap part, covering the user's head, and transforming the visor into a full cap. The joining surfaces of the two parts of the visor shaping tool (v3) are located near its outline (P).
Les figures 10, 11, 12 sont correspondantes et aident à la définition du volume.Figures 10, 11, 12 are corresponding and help to define the volume.
La figure 13 est une vue en perspective qui montre que la surface (fl) d'une visière (v3) peut comporter des bossagesFigure 13 is a perspective view which shows that the surface (fl) of a visor (v3) may include bosses
(r) permettant une circulation d'air entre le front de l'utilisateur et ladite surface. Ces bossages sont obtenus au cours de l'opération de mise en forme grâce à un outillage adéquat.(r) allowing air circulation between the user's forehead and said surface. These bosses are obtained during the shaping operation using suitable tools.
Elle montre aussi que la surface (f2) comme toute autre surface par ailleurs d'une visière quelconque obtenue selon le procédé peut comporter des reliefs en bosse ou en creux de type nervure (n) , alvéoles (1) , ou autre, pour améliorer la stabilité générale ou les possibilités de déformation élastique. Ces aspects de surface sont obtenus au cours de l'opération de mise en forme à l'aide d'un outillage adéquat. D'autres aspects à but décoratif ou publicitaire peuvent s'obtenir de la même façon.It also shows that the surface (f2) like any other surface, moreover, of any visor obtained according to the method can include reliefs in the form of a bump or hollow of the rib (n), alveoli (1), or other type, to improve general stability or the possibilities of elastic deformation. These surface aspects are obtained during the shaping operation using suitable tools. Other aspects for decorative or advertising purposes can be obtained in the same way.
Aux visières (vl, v2, v3) obtenues selon la description, sont ensuite adjoints des éléments connus, tels qu'une bride serre-tête (qui maintient l'ensemble sur le- front de l'utilisateur) et éventuellement d'un intercalaire absorbant la sueur, positionné sur la surface interne (fl) . Ces éléments sont fixés par des moyens quelconques. To the visors (vl, v2, v3) obtained according to the description, are then added known elements, such as a headband flange (which holds the assembly on the front of the user) and possibly an interlayer absorbing sweat, positioned on the internal surface (fl). These elements are fixed by any means.

Claims

REVENDICA IONSCLAIM IONS
" 1 - Visière pare-soleil caractérisée en ce qu'elle est réalisée en matériau thermoplastique cellulaire et en ce que ladite visière (vl) présente une forme monobloc galbée comprenant deux surfaces internes galbées (fl) et (f2) reliées par l'arête interne (f3) et deux surfaces externes (el) et (e2) , galbées et respectivement parallèles à (fl) et (f2) reliées par l'arête externe (e3) ; les surfaces (fl) et (el) ainsi que les surfaces (f2) et (e2) se rejoignent par raccords circulaires respectifs pour définir le contour (P) de la visière ; l'épaisseur de la visière (vl) est sensiblement identique sur toute sa surface."1 - Sun visor characterized in that it is made of cellular thermoplastic material and in that said visor (vl) has a curved one-piece shape comprising two curved internal surfaces (fl) and (f2) connected by the edge internal (f3) and two external surfaces (el) and (e2), curved and respectively parallel to (fl) and (f2) connected by the external edge (e3); the surfaces (fl) and (el) as well as the surfaces (f2) and (e2) join by respective circular connections to define the contour (P) of the visor; the thickness of the visor (vl) is substantially identical over its entire surface.
2 - Visière pare-soleil caractérisée en ce qu'elle est réalisée en matériau thermoplastique cellulaire et en ce que ladite visière (v2) présente une forme monobloc galbée comprenant deux surfaces internes galbées (fl) et (f2) et reliées par l'arête interne (f3) et une surface externe (e2) , qui n'est pas parallèle à (f2) définissant une forme en triangulation formant raidisseur, reliée par raccords circulaires respectifs à la surface (f2) pour former une partie du contour (P) qui circonscrit la partie en saillie et relie les deux extrémités latérales (fia) , et reliée également à la surface (fl) par l'arête supérieure (efl) qui définit l'autre partie du contour (P) de la visière (v2) .2 - Sun visor characterized in that it is made of cellular thermoplastic material and in that said visor (v2) has a curved one-piece shape comprising two curved internal surfaces (fl) and (f2) and connected by the edge internal (f3) and an external surface (e2), which is not parallel to (f2) defining a triangulation shape forming a stiffener, connected by respective circular connections to the surface (f2) to form part of the contour (P) which circumscribes the projecting part and connects the two lateral ends (fia), and also connected to the surface (fl) by the upper edge (efl) which defines the other part of the contour (P) of the visor (v2) .
3 - Visière pare-soleil caractérisée en ce qu'elle est réalisée en matériau thermoplastique cellulaire et en ce que ladite visière (v3) présente une forme monobloc galbée et deux surfaces internes galbées (fl) et (f2) reliées par l'arête interne (f3) et deux surfaces externes galbées (el) et (e2) reliées par l'arête externe (e3), la surface (el) étant parallèle à la surface (fl) ; toutes deux sont reliées par raccords circulaires respectifs pour former une partie du contour (P) de la visière, les surfaces (e2) et (f2) n'étant pas parallèles et étant reliées par raccords circulaires respectifs pour former l'autre partie du contour (P) de la visière (v3), lesdites surfaces (e2) (f2) définissant une forme en triangulation formant raidisseur.3 - Sun visor characterized in that it is made of cellular thermoplastic material and in that said visor (v3) has a curved one-piece shape and two curved internal surfaces (fl) and (f2) connected by the internal edge (f3) and two curved external surfaces (el) and (e2) connected by the external edge (e3), the surface (el) being parallel to the surface (fl); both are connected by respective circular connections to form part of the contour (P) of the visor, the surfaces (e2) and (f2) not being parallel and being connected by respective circular connections to form the other part of the contour (P) of the visor (v3), said surfaces (e2) (f2) defining a triangulation shape forming a stiffener.
4 - Visière selon l'une quelconque des revendications 2, et 3, caractérisée en ce qu'elle présente directement sur sa surface interne (fl) destinée à être mise en contact avec le front, des reliefs d'aération (r) .4 - Visor according to any one of claims 2 and 3, characterized in that it has ventilation reliefs (r) directly on its internal surface (fl) intended to be brought into contact with the forehead.
5 - Visière selon l'une quelconque des revendications 2 , 3, 4- t caractérisée en ce qu'elle présente sur la surface interne5 - Visor according to any one of claims 2, 3, 4- t characterized in that it has on the internal surface
(f2) en saillie au-dessus des yeux, ou sur toute autre surface, des reliefs en bosse ou en creux formant des nervures(f2) projecting above the eyes, or on any other surface, bumpy or hollow reliefs forming ribs
(n) , alévoles (1) , par exemple ainsi que tout autre type de relief en bosse ou en creux décoratif ou publicitaire. (n), honeycomb (1), for example as well as any other type of decorative or advertising bump or hollow relief.
PCT/FR1993/000241 1991-08-13 1993-03-10 One-piece sun visor made of a cellular thermoplastic material WO1994020053A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR9110454A FR2681004A1 (en) 1991-08-13 1991-08-13 Method of manufacturing a sun-shade visor made of cellular thermoplastic material, means of implementation and products obtained directed by the method
PCT/FR1993/000241 WO1994020053A1 (en) 1991-08-13 1993-03-10 One-piece sun visor made of a cellular thermoplastic material
AU37562/93A AU3756293A (en) 1991-08-13 1993-03-10 One-piece sun visor made of a cellular thermoplastic material

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FR9110454A FR2681004A1 (en) 1991-08-13 1991-08-13 Method of manufacturing a sun-shade visor made of cellular thermoplastic material, means of implementation and products obtained directed by the method
PCT/FR1993/000241 WO1994020053A1 (en) 1991-08-13 1993-03-10 One-piece sun visor made of a cellular thermoplastic material

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2039725A (en) * 1979-01-30 1980-08-20 Sawatsky H Sun visor
US4335471A (en) * 1980-11-13 1982-06-22 Quigley Jr Richard I Headgear
GB2116017A (en) * 1982-03-05 1983-09-21 Notley Allen Stane One-piece sun visor
WO1988004188A1 (en) * 1986-12-11 1988-06-16 Lidgren Lars Aake Alvar Head guard, preferably annular brow-band, and method for manufacturing such a head guard.
US5131094A (en) * 1990-12-03 1992-07-21 Ackerman Roger C Visor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2039725A (en) * 1979-01-30 1980-08-20 Sawatsky H Sun visor
US4335471A (en) * 1980-11-13 1982-06-22 Quigley Jr Richard I Headgear
GB2116017A (en) * 1982-03-05 1983-09-21 Notley Allen Stane One-piece sun visor
WO1988004188A1 (en) * 1986-12-11 1988-06-16 Lidgren Lars Aake Alvar Head guard, preferably annular brow-band, and method for manufacturing such a head guard.
US5131094A (en) * 1990-12-03 1992-07-21 Ackerman Roger C Visor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 9, no. 146 (M-389)(1869) 21 Juin 1985 *

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