WO2001052676A1 - Casque aerodynamique particulierement destine au ski - Google Patents

Casque aerodynamique particulierement destine au ski Download PDF

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Publication number
WO2001052676A1
WO2001052676A1 PCT/IB2001/000037 IB0100037W WO0152676A1 WO 2001052676 A1 WO2001052676 A1 WO 2001052676A1 IB 0100037 W IB0100037 W IB 0100037W WO 0152676 A1 WO0152676 A1 WO 0152676A1
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WO
WIPO (PCT)
Prior art keywords
helmet
previous
prolongation
air
correspondence
Prior art date
Application number
PCT/IB2001/000037
Other languages
English (en)
Inventor
Alberto Brignone
Renata Fusi
Silvana Mollica
Paolo Zanotto
Original Assignee
Brico S.R.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brico S.R.L. filed Critical Brico S.R.L.
Publication of WO2001052676A1 publication Critical patent/WO2001052676A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/0493—Aerodynamic helmets; Air guiding means therefor
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/10—Linings
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/28—Ventilating arrangements

Definitions

  • the present invention relates to an aerodynamic helmet for sporting activities, in particular for skiing.
  • a traditional form of helmet presents an outer shell shaped according to a single spherical surface which assures a good compromise between penetrability in air in the situation in which the user looks in the direction of advance or normal travel and the helmet is positioned longitudinally with its frontal anterior surface positioned transversely to the direction of advance, and the penetrability in air of the helmet, in the situation in which the user turns his/her head to the side, to check what happens around or to the rear, in which said helmet is positioned with its lateral surface positioned transversely to the aforementioned direction of advance or travel.
  • a problem relating to said conformations according to a single spherical surface concerns an excessively high aerodynamic drag in the normal situation of advance.
  • a crash helmet in particular for motorcycling, which comprises an outer shell having a forward part for protecting the front part of the head, which is in the form of a substantially spherical surface for protecting the frontal surface of the head, a rear part extending transverse for protecting the rear part of the head, and an intermediate part serving as a prolongation of the forward surface, between said spherical forward surface and said transverse rear surface, which defines a substantially cylindrical prolongation surface terminating with a terminal edge for the detachment of the flow running in contact with the surface of the helmet, which terminal edge is slightly curved downward and lies on a single vertical transverse plane.
  • the prolongation surface and the rear surface of the helmet mutually connect, defining a slightly obtuse angle between said surfaces.
  • Such a conformation is advantageous from the aerodynamic viewpoint, in that said prolongation surface allows to extend farther posteriorly, relative to traditional totally spherical helmets, the detachment point of the fluid flows from the surface of the helmet, thereby decrease aerodynamic drag against penetration in air which said helmet presents.
  • this conformation is disadvantageous, in that it defines a lateral shape of the helmet which, above all because of this rear prolongation of the frontal portion, is rather asymmetrical and, thus, when the user of the helmet tries to turn to the side to check what transpires around or behind him/her, provides a lateral surface which is positioned transversely to the direction of travel that offers considerable drag and that, particular in the case of sudden lateral rotary motions of the user's head, can cause the helmet to be subjected to sudden shocks which greatly stress the helmet user's head, with the risk of compromising his/her balance.
  • the helmet presents a spherical main body that defines the front and rear part thereof and an intermediate prolongation portion, positioned between said front part and said rear part, which prolongation portion is obtained by means of a circumferential band added to the spherical body of the helmet which defines a rear surface or strip extending on a vertical plane, circumferentially over the entire peripheral extension of the helmet, and wherefrom projects posteriorly the rear part of the spherical surface of the helmet.
  • Said configuration does not allow for a high penetrability of the helmet because the added cylindrical band presents, in correspondence with the contact point with the spherical surface of the helmet, a discontinuity with the spherical front surface which generates in any case a premature detachment and a certain turbulence of the air flows running on the surface of the helmet, thereby compromising hopes for greater penetrability in air that such a helmet configuration would present.
  • the aeration of the helmet user's head is obtained by means of a passage of air which enters the front part of the helmet, then passes through the head and the inner surface of the helmet and is then ejected outwards, through holes obtained in the rear surface of the helmet, thanks to the vacuum that is generated downstream of said rear surface of the helmet.
  • Such an aeration of the helmet user's head is not optimal, since air flows, with difficulty, due to the substantial hindrance to the passage of air provided by the user's head, in contact with the inner lining of the helmet, and also because said cooling air flows involve only the user's face and nape, failing to involve in a substantial manner the top part of the head, which is instead the part that is most subject to sweating and excessive heating.
  • a helmet in particular for skiing, comprising an outer shell presenting a frontal part for protecting the front part of the head, which is in the form of a substantially spherical surface, a rear part extending transversely for protecting the rear part of the head and a central upper part in the form of a prolongation surface positioned between said front surface and the rear surface, said prolongation surface extending with continuity starting from said spherical portion and terminating with a rear edge, the helmet further presents a first and second opposite lateral parts extending from said frontal, prolongation and rear surfaces for protecting the lateral parts of the head, wherein from said rear terminal edge of said prolongation surface there extends a recessing surface defining at least an angle with said prolongation surface, and wherein, between said recessing surface and said rear surface, a junction surface extending posteriorly is provided, which is lowered relative to said prolongation surface.
  • a helmet is thereby obtained which presents a high penetrability in air when oriented according to the normal direction of travel and which also has a compact conformation, substantially free of extensions that would make its lateral shape excessively asymmetrical and which, therefore, prevents the occurrence of sudden shocks for the user, when the latter turns his/her head oriented with its lateral part positioned transversely relative to the direction of normal advance or travel.
  • Said prolongation surface allows good penetrability in air, whilst said surface that recesses towards the inner part of the helmet and the junction surface downstream thereof define a sort of recess or step that prevents the present helmet from presenting an extension that is excessively elongated posteriorly, which would make the present helmet excessively asymmetrical, when seen from the side.
  • a helmet in particular for skiing, comprising an outer shell presenting a front part for protecting the front part of the head, which front part is in the form of a substantially spherical surface, a rear part extending transversely for protecting the rear part of the head and a top central part in the form of a prolongation surface positioned between said front surface and the rear surface, said prolongation surface extending with continuity starting from said spherical surface and terminating with a rear edge, the helmet further presenting a first and second opposite lateral parts extending from said front, prolongation and rear surfaces for protecting the lateral parts of the head, in which said first and second lateral parts extend with a wide radius of curvature, exceeding the radius of curvature of said front part.
  • said lateral parts can extend farther downwards and in correspondence with the lateral areas of the cheeks of the user's face, than in known helmets having lateral parts that lie on the single spherical surface of the helmet, encompassing better than prior art helmets the lateral parts of the head in correspondence with said areas of the cheeks.
  • a helmet in particular for skiing, comprising an outer shell presenting a front part for protecting the front part of the head, which is in the form of a substantially spherical surface, a rear part extending transversely for protecting the rear part of the head and a central upper part in the form of prolongation surface positioned between said front surface and the rear surface, said prolongation surface extending with continuity starting from said spherical portion and terminating with a rear edge, the helmet further presents a first and a second opposite lateral walls extending from said front, prolongation and rear surfaces for protecting the lateral parts of the head, in which at least said prolongation portion is so shaped as to define a helmet body which, starting from said front surface through to the rear part thereof, extends in width.
  • This helmet conformation defines, when seen in top plan view, a soft of general conformation diverging from the frontal part towards the rear wall of the helmet. This diverging conformation is able to provide the helmet with greater penetrability in air.
  • this conformation makes the present helmet comfortable to wear since it allows not to narrow excessively the lateral parts of the helmet in correspondence with the rear part, as occurs instead with traditional, totally spherical helmets.
  • the helmet is provided with means for allowing the entry of a flow of air inside the helmet and with means for allowing the exit of a flow of air from the interior of the helmet; said means for allowing the exit of a flow of air from the interior of the helmet comprising, downstream of said terminal edge of the prolongation surface, a plurality of distributed holes positioned in the vicinity of said terminal edge. Downstream of the fluid detachment edge, a sort of vacuum is formed which draws outwards the air that is inside the shell. This configuration of outlet openings allows a high outflow rate, whilst maintaming a certain structural strength of the outer shell in correspondence with said outlets.
  • the present embodiment of helmet comprises, in addition to the outer shell, and inner cap, preferably made of moulded polystyrene foam, channel means are defined between said outer cap and said inner cap, and respective openings are provided for allowing respectively the entry and the exit of a flow of air in said chamiel means; moreover, cavities are provided in said inner cap, said cavities terminating respectively into said channel means and the lower surface of the inner cap to define respective secondary ducts for a flow of air which is drawn, by effect of the passage of said main flow of air, into the channel means.
  • the capability is thereby obtained of cooling the user's head and in particular the top part thereof, drawing warm air therefrom, the top part of the head being the one more subjected to sweating and overheating.
  • Figure 1 shows a perspective view of a first preferred embodiment of helmet of the present invention
  • Figure 2A shows a lateral elevation view of the helmet according to the first embodiment of the present invention
  • Figure 2B shows a schematic view showing the curvatures involved in the lateral elevation of the helmet of the present invention
  • Figure 3A shows a schematic view showing a front elevation view of the helmet according to the first embodiment of the present invention
  • Figure 3B shows a schematic view showing the curvatures involved in the front elevation of the helmet of the present invention
  • Figure 4 shows a rear elevation view of the helmet according to the first embodiment of the present invention
  • Figure 5 A shows a top view of the helmet according to the first embodiment of the present invention, having the shutter in the closed condition and showing the curvatures involved in this view;
  • Figure 5B shows a top view of the helmet according to the first embodiment of the present invention, having the shutter in the open condition
  • Figure 6 shows a schematic section view, in accordance with the line NI-NI of Figures 7 and 8, showing the path of a channel for a flow of air of the helmet, according to the first embodiment of the present invention
  • Figure 7 shows a top view of only the inner shell of the helmet according to the first embodiment of the present invention.
  • Figure 8 shows a rear elevation view of only the inner shell of the helmet according to the first embodiment of the present invention
  • Figure 9 shows a detail of the seat that receives an element defining an aeration channel in correspondence with a lateral ear of the helmet according to the first embodiment of the present invention
  • Figure 10 shows a perspective view of a second preferred embodiment of helmet of the present embodiment of the present invention.
  • Figure 11 shows a rear elevation view of a third preferred embodiment according to the present invention.
  • FIGS 1 through 9 of the accompanying drawings show a preferred embodiment 10 of aerodynamic helmet preferably used for skiing.
  • the present helmet is in the form of a helmet 10 which is anteriorly open with an outer shell or cap 12, which presents, substantially, a frontal part 14 for protecting the forehead and the forward part of the skull, an intermediate part 16 able to protect the top part of said skull, a rear part 18 able to protect the rear part of the head and lateral parts 24, 26 for protecting the lateral parts of the user's head and, partially, of his/her face.
  • the front part 14 of the helmet presents a three-dimensional profile substantially in the form of a spherical surface which is delimited by a front edge 13, starting from which said spherical surface presents a profile that increases in height to a maximum level.
  • the helmet when worn, is oriented relative to a longitudinal axis defining the direction of advance, for instance a longitudinal axis of the type shown schematically, with dashed and dotted line, in Figure 2A, which is indicated with the reference "L".
  • the rear part 18 of the outer shell 12 is in the form of a surface extending transversely and which is appropriately convex in the way that shall be described better farther on.
  • the central top part 16 of the helmet which is situated between said front surface 14 and the rear surface 18, is in the form of a prolongation surface that blends without interruption, i.e. without any corners, with said front spherical surface 14 and terminates posteriorly with a clearly defined edge 17 defining a detachment point of the fluid flows from the surface of the helmet, as shown by the arrows "F" of Figure 2A.
  • junction surface 22 is provided that extends posteriorly, which is lowered relative to said prolongation surface 16.
  • Said recessing surface 20 and lowered surface 22 define a sort of rear step which provides the helmet, when seed from the side, a particularly compact shape (see Figure
  • said prolongation portion 16 and said lateral parts 24, 26 are so shaped as to define a helmet body which, starting from said frontal surface through to the rear part thereof, extends in width, or, stated otherwise, globally converges towards the front part.
  • FIG. 5 A where the plan view of the helmet shows that the outer shell of the helmet has a sort of conformation converging towards the frontal part.
  • This conformation provides the helmet with a high penetrability in air.
  • the lateral fluid flow detachment surface in this way is also moved backwards relative to traditional spherical helmets, thereby increasing the aerodynamic quality of the present helmet.
  • this conformation makes the present helmet particular comfortable to wear, thanks to the fact that it avoids narrowing the lateral parts of the helmet in correspondence with the rear part, as is the case instead with traditional totally spherical helmets.
  • the rear prolongation 16 has lateral portions 16a, 16b which are defined by respective substantially spherical surfaces having a wide radius of curvature and which blend, without interruptions
  • the spherical surfaces that define said lateral portions 16a, 16b of the prolongation surface 16, are such as to present a curvature greater than that of the frontal spherical surface (indicated with the reference C14) in said Figure 5 A) in such a way as to define a widening of the transverse shape of the helmet relative to the width of the frontal part 14.
  • said prolongation surface 16 presents a central upper part 16c which extends according to a spherical surface presenting a wide radius of curvature (indicated schematically with reference C'16 in Figure 2B) greater than the radius of curvature of the spherical front part 14 (indicated schematically with reference C14 in Figure 2B).
  • the present helmet is also provided with means for allowing the entry of a flow of air inside the helmet and means for allowing the exit of a flow of air from the interior of the helmet.
  • the means for allowing the exit of a flow of air from the interior of the helmet comprise a plurality of elongated holes 34 obtained and transversely distributed in said recessing surface 20, immediately downstream of said terminal edge 17 of the prolongation surface 16.
  • junction surface 22 downstream of the holes 34 further allows to maintain a certain velocity of the fluid downstream of the terminal edge, which allows a high extractive flow rate, through the openings 34, of the air that is located inside the helmet.
  • the present embodiment of helmet comprises an inner cap 11 (shown individually in Figures 8 and 9), preferably made of moulded polystyrene foam.
  • channel means 31 are defined between said outer cap 12 and said inner cap 11, and respective openings (indicated in the figures with the numerical references 32, 34, 35) to allow respectively the entry and the exit of a flow of air in said channel means 31.
  • Cavities are provided, globally indicated with the numerical reference 36, in said inner cap 11. These cavities 36 present extremities ending respectively in said channel means 31 and in the lower surface 11a of the inner cap 11 to define respective branch conduits for a flow of air, by a sort of Nenturi effect caused by the passage of said main flow of air, within said channel means 31. In this way the capability is obtained of cooling, by drawing warm air, the top part of the head which is the most subject to sweating and overheating.
  • the rear terminal edge 17 has a concavity oriented downwards and said recessing surface 20 is in the form of an arched striped which also presents the downwards oriented concavity.
  • This recessing surface 20 presents a substantially uniform width, tapering slightly, i.e. decreasing slightly in width, in correspondence with the lateral extremities 20a, 20b.
  • the recessing surface 20 defines with said prolongation surface 16 a substantially right angle.
  • said junction surface 22 is in the form of a strip lying on a spherical surface (indicated with reference C22) in Figure 2B) with wide radius, specifically having substantially the same radius of curvature of the upper part 16c of the prolongation surface.
  • said rear junction surface 22 is so oriented as to present a general inclination greater than said upper portion 16c of the prolongation surface 16.
  • said junction surface 22, between said recessing surface 20 and said rear surface 18, terminates with an edge 23 and is connected to said rear surface 18 defining at least an angle therewith.
  • said rear junction surface 22 defines both with said recessing surface 22, and with said rear surface 18, an obtuse angle.
  • the edge 23 connecting to the recessing surface is arched and presents the concavity oriented downwards.
  • said rear surface 18 blends, without creating angles, with said inclined junction surface 22.
  • said rear surface 18 is transversely and vertically according to respective radius of curvature Cl 8 and C'l 8 defining in the area immediately downstream of the edge 23, connecting the latter with the junction surface
  • a conformation with wide radius of curvature such as to define a nearly flattened rear area which provides a shape that is comfortable to wear for the helmet user.
  • the first and the second lateral parts 24, 26, or at least the inner edges thereof extend with a wide radius of curvature (only one indicated in Figure 3B with the reference C24) that greatly exceeds the radius of curvature (C14) of said spherical frontal part 14.
  • said lateral parts better encompass the lateral parts of the head, extending farther, relative to similar helmets of the prior art, in correspondence with the lateral areas of the cheeks of the user's face.
  • said first and second lateral parts 24, 26 are in particular in the form of convex surfaces having the convexity oriented towards the exterior of the helmet. Said lateral parts 24, 26 present an elongated conformation which extends on the surface of the helmet until reaching the proximity of the lateral edges of the recessing portion 22.
  • the lateral portions 24, 26 present a substantially elliptical peripheral profile which places it long side obliquely relative to the longitudinal orientation of the helmet itself (see for instance Figure 2A).
  • Said lateral parts further present respective projecting portions 28, 30 elongated outwards and symmetrically positioned within said lateral parts 24, 26.
  • These projecting elongated portions 28, 30 are internally hollow and present ends 28a, 28b, 30a, 30b open to define an aeration channel between the inner surface of said projecting element 28 and 30 the corresponding seat for receiving these projecting portions 28, 30.
  • This seat 24a presents openings 24'a providing communication with the inner part of the head.
  • the projecting elongated portions 28, 30 present an outwardly curved profile and flattened extreme ends 28c, 28d, 30c, 30d, said extreme openings are obtained in correspondence with the perpendicular transverse edge joining the convex profile 28, 30 and the corresponding flattened extreme areas 28c, 28d, 30c, 30d.
  • said channel means 31 are defined by depressions extending into the inner cap.
  • a plurality of openings 32 are provided for the entry of air into the helmet in correspondence with the front part of the outer cap 12.
  • Said inlet openings are distributed longitudinally on the front part of the frontal spherical surface 14 of the outer cap and comprise a first and a second lateral inlet openings in advanced position relative to a second pair of openings farther inward in the transverse direction.
  • Said air inlet openings 32 end in corresponding longitudinal channels 38a, 38'a (shown in Figures 6 through 8) defining means conveying means for a respective main flow of air.
  • At least a first and a second 38a of said first longitudinal channels converge in corresponding longitudinal manifold channels, indicated with the references 30b in the aforementioned figures.
  • One thereby obtains the conveyance into a single channel of a flow coming from multiple inlet channels, obtaining a considerable flow of air, which thus presents a high velocity and consequent high capacity of drawing a secondary flow of air from the head through the aforementioned cavities 36.
  • a longitudinal channel 38a can also be provided that ends in at least a first and a second first branched longitudinal channels 38'a to distribute the conveyed flow of air towards corresponding areas of the inner cap 11 and concentrate a greater flow of air into predefined channels 38a for drawing air from the interior of the helmet.
  • This channel is not active for the moment, no inlet opening in the outer cap being provided. In other embodiments of the present helmet, however, such an opening could be provided.
  • the extraction cavities 36 end in correspondence with the longitudinal manifold channels 38b.
  • the extraction cavities 36 are in correspondence with the extremity for injection into the respective longitudinal manifold channel 38b and/or in correspondence with the outlet extremity of the channel 38b.
  • said extraction cavities 36 are in the form of cylindrical holes obtained by means of a corresponding pivot portion which prolongs in substantially perpendicular fashion from the surface of the mould that allows to manufacture the present cap.
  • Said projecting pins for the realisation of the cavity 36 are so positioned as to facilitate the extraction of the mould from the moulded cap. Said mould for obtaining the cap not being shown in the accompanying drawings.
  • said channel means present a depression
  • said channel means end in correspondence with openings 34 provided in correspondence with a recessing surface 22 extending peripherally and transversely to the outer cap 12.
  • a transverse channel 38c is provided in correspondence with said holed recessing portion 20 of the outer cap 12.
  • This transverse channel 38c allows to distribute the flow of air over a broad exit area. One thereby avoids the risk, due to constructive tolerances, that some outlets 34 are not at all positioned or are imperfectly positioned in correspondence with a respective longitudinal channel.
  • Said channels moreover end outwards through a wide opening 35, obtained by means of a lower transverse channel 39, between the inner cap and the outer cap in correspondence with the rear lower edge 19 of the helmet.
  • the longitudinal manifold channels 38b diverge in longitudinal channels 38d ending within said transverse manifold channel 38c, wherefrom are branched channels 38f converging in said main rear channels 38e.
  • cavities 36 which are provided in said cap 11 for the extraction of a flow of warm air coming from the head, are also provided in correspondence with the main rear channels and, in particular, are provided in the vicinity or in correspondence with peripheral areas of the upper face of the inner cap so as to allow to obtain said holes by means of pins projecting from the surface of the mould, which are oriented towards the direction of extraction of the mould itself relative to the polystyrene cap, thereby allowing the manufacture of the hole directly in a single operation for the moulding of the inner cap.
  • a generally "Y" shaped shutter 40 is movable along the surface of the helmet to close and respectively open, adjustable fashion, said air inlet openings 32.
  • the shutter means 40 are in the form of a curved element that is adapted to the curved conformation of the outer surface of the helmet and are able to be moved in a plurality of position between an advanced closure position and a rear, maximum opening position.
  • the shutter 40 presents a curved front edge 42 that adapts itself, in the position of closure against a corresponding lowered seat of the outer cap 12 of the helmet.
  • Said lowered seat presents an arched lowered front edge 44 from whose extremities extend respective lowered lateral edges 46, 48 extending towards the rear part parallel to the lateral edges of said shutter 40.
  • the shutter further presents an elongated seat 50 in correspondence with the central wing which extends into the body defining the lateral wings of the Y, which defines means for engaging the user's finger in view of the movement of the shutter itself.
  • the means for guiding said shutter are provided on said outer shell, said guiding means being in the form of longitudinal slits 52, 54, 56 which receive corresponding sliding pints 58, 60, 62 integral with said shutter 40.
  • Said pins 58, 60, 62 present a widened head co-operating with the inner surface of said shell for retaining by friction the shutter to the outer shell (this fact not being shown in particular in the enclosed figures).
  • said guiding means of said shutter comprise a central slit 56 and a pair of lateral slits 52, 54 longitudinally in advanced position relative to the central slit.
  • the guiding slits present lateral guide edges and a rear edge defining means for stopping the shutter in the maximum opening position.
  • the central slit 56 further presents a front edge that defines means for anteriorly stopping the movement of said shutter.
  • the lateral shutters 52, 54 further extends anteriorly in a widened portion defining a corresponding air inlet 32.
  • the helmet further comprises an inner lining, indicated with R in the figures, made of soft, air-permeable material able to cover the rear outlet openings 35. Holes can also be provided in said lining material to facilitate the passage of air from the head outwards.
  • a retaining bracket can be used, indicated in dashed line, for an attachment band of the helmet.
  • the successive Figure 10 shows a second embodiment of helmet.
  • the helmet of this second preferred embodiment is substantially similar to the helmet of the first embodiment and it is not therefore necessary to comment it again in detail.
  • This second preferred embodiment is substantially similar to the helmet of the first embodiment and it is not therefore necessary to comment it again in detail.
  • the helmet of this second embodiment differs from the helmet of the first embodiment in that the first and second lateral parts (indicated herein with the numerical references 24' and 26') of the outer shell 12 prolong with corresponding anterior portions 28", 30", made of soft material, which allow a comfortable and encompassing retention around the user's chin.
  • Said lower prolongation portions 28", 30" present an outer portion E made of wear-resistant material which is fastened by means of a plurality of nails or rivets C to the outer cap 12 of the helmet.
  • a softer layer projects internally, indicate with the reference I in the figure, for instance made of the same material that constitutes the inner lining R of the helmet.
  • the strap G for attaching the helmet to the user's chin is, advantageously, attached directly to said portions 28" and 30".
  • This second preferred embodiment does not comprise, in correspondence with the outwardly curved lateral parts 24, 26, the projecting elongated portions that define the aeration channels in correspondence with the ears.
  • the lozenge shaped elongated seats or recesses that extend centrally to said oblique lateral portions 24', 26 remain in sight. Only one of said seats, indicated with the numerical reference 26"a, being shown in Figure 10.
  • said outlet holes in correspondence with the recessing surface 20 are distributed in a first and a second plurality of holes, in the present case composed each by two respective holes 134', 134' and 134", 134", which are mutually distanced defining a wide central area 120' in solid material in said recessing strip 20.
  • This configuration of the outlet holes allows to have an outer shell structure which, in correspondence with the central area is more resistant to impacts, whilst guaranteeing, at the same time, a considerable cooling action on the helmet user's head.
  • the outer shell 12 is preferably made of carbon fibres, polycarbonate, ABS, whilst the inner shell or cap 11 is preferably made, by moulding, of polystyrene foam.
  • the inner lining is, in turn, preferably made of fabric, possibly with multiple layers, with the use of micro fibres.
  • the helmet embodiments described above are preferably usable by a skier, but other uses thereof in other sport or leisure activities, for instance motorcycling, can be imaged.
  • the innovative aspects illustrated herein are not in any case to be considered as exclusive of the helmet embodiments described herein, as said innovative aspects could find application in other types of helmet for different sporting activities from those mentioned above.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Helmets And Other Head Coverings (AREA)

Abstract

L'invention concerne un casque (10) destiné en particulier à la pratique du ski, comportant une coquille extérieure (12) composée d'une partie frontale (14) destinée à protéger la partie frontale de la tête, se présentant sous la forme d'une surface essentiellement sphérique, d'une partie arrière (18) s'étendant perpendiculairement, destinée à protéger la partie arrière de la tête, et d'une partie centrale supérieure (16) se présentant sous la forme d'une surface de prolongation (16) disposée entre ladite surface frontale et ladite surface arrière. Ladite surface de prolongation (16) s'étend en continu à partir de ladite partie sphérique (14) et s'achève avec un bord arrière (17). Une première et une deuxième parties latérales opposées (24, 26) s'étendent à partir desdites surfaces frontale (14), de prolongation (16), et arrière (18) afin de protéger les parties latérales de la tête. Selon l'invention, une surface en retrait (20) définissant au moins un angle avec ladite surface de prolongation (16) s'étend à partir dudit bord arrière terminal (17) de ladite surface de prolongation (16), et une surface de jonction abaissée (22) s'étendant à la suite de ladite surface de prolongation (16) est disposée entre ladite surface d'abaissement (20) et ladite surface arrière (18).
PCT/IB2001/000037 2000-01-18 2001-01-17 Casque aerodynamique particulierement destine au ski WO2001052676A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO20000013 IT1320876B1 (it) 2000-01-18 2000-01-18 Casco aerodinamico in particolare per l' attivita' sciistica .
ITBO2000A000013 2000-01-18

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WO2001052676A1 true WO2001052676A1 (fr) 2001-07-26

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WO (1) WO2001052676A1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1323360A2 (fr) * 2001-12-24 2003-07-02 Uvex Sports GmbH & Co. KG Casque, en particulier casque intégral pour motocycliste
EP1972220A3 (fr) * 2007-03-08 2009-10-07 CASCO Group Societate in Comandita Simpla (SCS) Casque de sport doté d'une résistance réduite à l'air
US8938818B2 (en) 2002-05-01 2015-01-27 Riddell, Inc. Sports helmet
US9289024B2 (en) 2007-04-16 2016-03-22 Riddell, Inc. Protective sports helmet
US9398783B2 (en) 2007-10-31 2016-07-26 Kranos Ip Corporation Helmet with shell having raised central channel and ear holes with abutting slopped banks
JP2017048478A (ja) * 2015-09-01 2017-03-09 株式会社Ｓｈｏｅｉ 空力制御装置及びこれを備えたヘルメット
US9763488B2 (en) 2011-09-09 2017-09-19 Riddell, Inc. Protective sports helmet
US9788591B2 (en) 2007-04-16 2017-10-17 Riddell, Inc. Quick release connector
USD838922S1 (en) 2011-05-02 2019-01-22 Riddell, Inc. Football helmet
USD844255S1 (en) 2014-02-12 2019-03-26 Riddell, Inc. Football helmet
US10362829B2 (en) 2013-12-06 2019-07-30 Bell Sports, Inc. Multi-layer helmet and method for making the same
USD856601S1 (en) 2011-05-02 2019-08-13 Riddell, Inc. Football helmet
US10721987B2 (en) 2014-10-28 2020-07-28 Bell Sports, Inc. Protective helmet
US11167198B2 (en) 2018-11-21 2021-11-09 Riddell, Inc. Football helmet with components additively manufactured to manage impact forces
US11399589B2 (en) 2018-08-16 2022-08-02 Riddell, Inc. System and method for designing and manufacturing a protective helmet tailored to a selected group of helmet wearers

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7607301U1 (de) * 1976-03-10 1976-12-09 Fa. Hans Roemer, 7910 Neu-Ulm Motorsporthelm
FR2532528A1 (fr) * 1982-09-03 1984-03-09 Galet Adrien Casque de protection
US4622700A (en) * 1985-12-09 1986-11-18 Bell Helmets Inc. Suction ventilated helmet
FR2645719A1 (fr) * 1989-04-18 1990-10-19 Guichard Philippe Casque aerodynamique
DE9209357U1 (de) * 1992-07-11 1992-09-10 Institut für Forschung und Entwicklung von Sportgeräten (FES) e.V., O-1160 Berlin Sturzhelm, insbesondere für Radsport
US5165116A (en) * 1990-09-10 1992-11-24 Simpson Elwood J B Anti buffeting safety-racing helmet
EP0815754A1 (fr) * 1996-06-24 1998-01-07 Institute of Occupational Safety and Health, Council of Labor Affairs Casque de protection à usage sur les chantiers

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7607301U1 (de) * 1976-03-10 1976-12-09 Fa. Hans Roemer, 7910 Neu-Ulm Motorsporthelm
FR2532528A1 (fr) * 1982-09-03 1984-03-09 Galet Adrien Casque de protection
US4622700A (en) * 1985-12-09 1986-11-18 Bell Helmets Inc. Suction ventilated helmet
FR2645719A1 (fr) * 1989-04-18 1990-10-19 Guichard Philippe Casque aerodynamique
US5165116A (en) * 1990-09-10 1992-11-24 Simpson Elwood J B Anti buffeting safety-racing helmet
DE9209357U1 (de) * 1992-07-11 1992-09-10 Institut für Forschung und Entwicklung von Sportgeräten (FES) e.V., O-1160 Berlin Sturzhelm, insbesondere für Radsport
EP0815754A1 (fr) * 1996-06-24 1998-01-07 Institute of Occupational Safety and Health, Council of Labor Affairs Casque de protection à usage sur les chantiers

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1323360A2 (fr) * 2001-12-24 2003-07-02 Uvex Sports GmbH & Co. KG Casque, en particulier casque intégral pour motocycliste
EP1323360A3 (fr) * 2001-12-24 2003-08-13 Uvex Sports GmbH & Co. KG Casque, en particulier casque intégral pour motocycliste
US8938818B2 (en) 2002-05-01 2015-01-27 Riddell, Inc. Sports helmet
US10143257B2 (en) 2002-05-01 2018-12-04 Riddell, Inc. Protective sports helmet
US10136692B2 (en) 2002-05-01 2018-11-27 Riddell, Inc. Sports helmet
US10932514B2 (en) 2002-05-01 2021-03-02 Riddell, Inc. Protective sports helmet
EP1972220A3 (fr) * 2007-03-08 2009-10-07 CASCO Group Societate in Comandita Simpla (SCS) Casque de sport doté d'une résistance réduite à l'air
US9788591B2 (en) 2007-04-16 2017-10-17 Riddell, Inc. Quick release connector
US9289024B2 (en) 2007-04-16 2016-03-22 Riddell, Inc. Protective sports helmet
US10856600B2 (en) 2007-04-16 2020-12-08 Riddell, Inc. Quick release connector
US10271605B2 (en) 2007-04-16 2019-04-30 Riddell, Inc. Protective sports helmet
US10561193B2 (en) 2007-04-16 2020-02-18 Riddell, Inc. Protective sports helmet
US9398783B2 (en) 2007-10-31 2016-07-26 Kranos Ip Corporation Helmet with shell having raised central channel and ear holes with abutting slopped banks
USD856601S1 (en) 2011-05-02 2019-08-13 Riddell, Inc. Football helmet
USD838922S1 (en) 2011-05-02 2019-01-22 Riddell, Inc. Football helmet
USD856600S1 (en) 2011-05-02 2019-08-13 Riddell, Inc. Football helmet
US9763488B2 (en) 2011-09-09 2017-09-19 Riddell, Inc. Protective sports helmet
US10874162B2 (en) 2011-09-09 2020-12-29 Riddell, Inc. Protective sports helmet
US11311067B2 (en) 2011-09-09 2022-04-26 Riddell, Inc. Protective sports helmet
US11503872B2 (en) 2011-09-09 2022-11-22 Riddell, Inc. Protective sports helmet
US11871809B2 (en) 2013-12-06 2024-01-16 Bell Sports, Inc. Multi-layer helmet and method for making the same
US11291263B2 (en) 2013-12-06 2022-04-05 Bell Sports, Inc. Multi-layer helmet and method for making the same
US10362829B2 (en) 2013-12-06 2019-07-30 Bell Sports, Inc. Multi-layer helmet and method for making the same
USD844255S1 (en) 2014-02-12 2019-03-26 Riddell, Inc. Football helmet
USD927078S1 (en) 2014-02-12 2021-08-03 Riddell, Inc. Football helmet
US11638457B2 (en) 2014-10-28 2023-05-02 Bell Sports, Inc. Protective helmet
US10721987B2 (en) 2014-10-28 2020-07-28 Bell Sports, Inc. Protective helmet
JP2017048478A (ja) * 2015-09-01 2017-03-09 株式会社Ｓｈｏｅｉ 空力制御装置及びこれを備えたヘルメット
US11399589B2 (en) 2018-08-16 2022-08-02 Riddell, Inc. System and method for designing and manufacturing a protective helmet tailored to a selected group of helmet wearers
US11167198B2 (en) 2018-11-21 2021-11-09 Riddell, Inc. Football helmet with components additively manufactured to manage impact forces

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