EP0090720A1 - Cyclist's helmet with an alveolus structure - Google Patents

Cyclist's helmet with an alveolus structure Download PDF

Info

Publication number
EP0090720A1
EP0090720A1 EP83400586A EP83400586A EP0090720A1 EP 0090720 A1 EP0090720 A1 EP 0090720A1 EP 83400586 A EP83400586 A EP 83400586A EP 83400586 A EP83400586 A EP 83400586A EP 0090720 A1 EP0090720 A1 EP 0090720A1
Authority
EP
European Patent Office
Prior art keywords
cap
cells
helmet
air
head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP83400586A
Other languages
German (de)
French (fr)
Inventor
Jean Sacrest
Guy Greffier
Pierre Roubinet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Publication of EP0090720A1 publication Critical patent/EP0090720A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A42HEADWEAR
    • A42BHATS; HEAD COVERINGS
    • A42B3/00Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04Parts, details or accessories of helmets
    • A42B3/06Impact-absorbing shells, e.g. of crash helmets
    • A42B3/066Impact-absorbing shells, e.g. of crash helmets specially adapted for cycling helmets, e.g. for soft shelled helmets
    • AHUMAN NECESSITIES
    • A42HEADWEAR
    • A42BHATS; HEAD COVERINGS
    • A42B3/00Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04Parts, details or accessories of helmets
    • A42B3/28Ventilating arrangements

Definitions

  • the present invention relates to a protective helmet with a honeycomb structure, in particular for users of two-wheeled vehicles.
  • Helmets of this type generally consist of an outer shell, an internal shock absorbing device, a comfort material allowing the helmet to be adapted to different head sizes and a retention device ensuring the helmet held on the head. It is understood that the assembly constitutes a relatively complex product and, depending on the sophistication of its components, expensive. In this case, the role of the cap is limited to avoid the penetration of blunt obstacles and to allow a distribution of impact forces. The shock absorption itself is provided by the internal device and the cap participates only a little.
  • the present invention relates to a protective helmet provided with a cap playing a damping role, which makes it possible to simplify its structure, compared to that of its previous counterparts, and considerably improve user safety compared to helmets of the type "banana”.
  • the protective helmet according to the present invention essentially consists of a thermoformed cap, held in place by any usual conventional means, such as for example a chinstrap system not shown for the convenience of the drawing.
  • the surface of the cap 1 is shaped so as to constitute a large number of cells 2, the ends of which alone can be in contact with the skull of the user. Between these contact zones of limited total area, air can circulate continuously, allowing the cooling of the head. This effect can be further increased by arranging holes in different places of the cap 1, in particular on the surface of the cells 2.
  • the latter constitute energy absorbers, because they are deformable by buckling under the action of an impact.
  • the shock-absorbing cap according to the invention can take a large number of forms, depending on the parameter considered.
  • the cells are replaced by ribs 60, having the same function.
  • the circulation of air in the ribs 60 is particularly favored, which allows good cooling and constant ventilation of the head, and thus contributes to the comfort of a cyclist providing significant effort and continued.
  • the shape of the cell 70 is specially studied in its aerodynamic aspect, so as to minimize its appearance as an air trap, by consequently promoting the good flow of the air streams 71.
  • the caps 1 can be produced in various ways, either by injection molding or by thermoforming from thermoplastic materials such as polyolefins (high and low density polyethylene, polypropylene and copolymers), acrylonitrile - butadiene - styrene copolymers, polyamides , polycarbonates, polyurethane, ethylene - vinyl acetate copolymers. P.V.C. etc., or produced by vulcanization of compression or transfer molded elastomers or by crosslinking of cast products such as polyurethanes, etc.
  • the stamps forming cells can also be produced by extrusion blow molding, rotational molding or gelation, for example of low density polyethylene.
  • the honeycomb ribbed cap in one operation, but it can also be envisaged for reasons of simplicity of embodiment to form the stampings and then bring them back to the cap by welding, gluing, stapling, etc.
  • the alveolate cap can be made of several elements then assembled.
  • the small thickness of the cap and its flexibility allow the helmet to be adjusted to the size of the cyclist's head by simple adjustment of the chin strap by having a limited number of helmet sizes.
  • This adaptation system can be of the foam "head circumference” type, adjustable and fixed to the helmet by bonding or stapling welding, or even “floating cap", consisting of a head circumference and helmet adaptation straps on the head.

Abstract

The protective helmet essentially consists of an upper part (1) which, is thermoformed in a synthetic material and comprises depressions, such as alveoli (2), or ribs (60), only those ends of which opposite, those which are integral with the upper part, coming into contact with the user's skull, the said alveoli thus constituting shock absorbers and together determining channels for the circulation of air to cool the head. Application to the protection of cyclists or moped riders. <IMAGE>

Description

Casque à structure alvéolaire, notamment pour cycliste ou cyclomotoriste.Helmet with honeycomb structure, especially for cyclist or moped rider.

La présente invention se rapporte à un casque protecteur à structure alvéolaire, en particulier pour les utilisateurs de véhicules à deux roues.The present invention relates to a protective helmet with a honeycomb structure, in particular for users of two-wheeled vehicles.

Des casques de ce type sont en général constitués d'une calotte extérieure, d'un dispositif interne amortisseur de chocs, d'un matériau de confort permettant l'adéquation du casque à différentes tailles de tête et d'un dispositif de rétention assurant le maintien du casque sur la tête. On conçoit que l'ensemble constitue un produit relativement complexe et, suivant la sophistication de ses composants, coûteux. Dans ce cas, le rôle de la calotte se limite à éviter la pénétration d'obstacles contondants et à permettre une répartition des forces d'impacts. L'amortissement des chocs proprement dit est assuré par le dispositif interne et la calotte n'y participe que peu.Helmets of this type generally consist of an outer shell, an internal shock absorbing device, a comfort material allowing the helmet to be adapted to different head sizes and a retention device ensuring the helmet held on the head. It is understood that the assembly constitutes a relatively complex product and, depending on the sophistication of its components, expensive. In this case, the role of the cap is limited to avoid the penetration of blunt obstacles and to allow a distribution of impact forces. The shock absorption itself is provided by the internal device and the cap participates only a little.

On connait également des casques pour cyclistes, du type "banane", formés de quelques boudins de mousse, donc sans calotte. Ces derniers n'offrent en général qu'une protection extrêmement limitée, notamment à l'égard des objets contondants susceptibles de pénétrer entre les boudins de mousse, ces derniers n'ayant du reste par eux-mêmes que de faibles qualités d'absorption d'énergie.There are also known helmets for cyclists, of the "banana" type, formed of a few strands of foam, therefore without a cap. The latter generally offer only extremely limited protection, in particular with regard to blunt objects likely to penetrate between the foam tubes, the latter having by themselves only poor absorption qualities. 'energy.

La présente invention concerne un casque protecteur pourvu d'une calotte jouant un rôle amortisseur, ce qui permet de simplifier sa structure, par rapport à celle de ses homologues antérieurs, et d'améliorer considérablement la sécurité de l'utilisateur comparativement aux casques du type "banane".The present invention relates to a protective helmet provided with a cap playing a damping role, which makes it possible to simplify its structure, compared to that of its previous counterparts, and considerably improve user safety compared to helmets of the type "banana".

Ce faisant, on gagne consécutivement en légèreté, en prix de revient, et au niveau de la climatisation, ceci étant très important en particulier pour les utilisateurs cyclistes.In doing so, we consecutively gain in lightness, in cost price, and in terms of air conditioning, this being very important in particular for cyclist users.

L'invention sera décrite à titre d'exemples non limitatifs au regard des figures 1 à 7, qui représentent respectivement :

  • - la figure 1, une vue en perspective d'un casque selon l'invention ;
  • - les figures 2a et 2b, des vues de détail montrant respectivement en plan et en coupe une alvéole de la calotte constituant le casque ;
  • - les figures 3a et 3b, des vues montrant respectivement en perspective et en coupe une autre forme d'alvéole ;
  • - les figures 4 et 5, d'autres variantes d'alvéoles vues en perspective ;
  • - les figures 6a et 6b, des vues en perspective et en coupe d'une autre forme de calotte suivant l'invention ;
  • - la figure 7, une vue en coupe d'une alvéole, avec en évidence sa fonction aérodynamique.
The invention will be described by way of nonlimiting examples with regard to FIGS. 1 to 7, which respectively represent:
  • - Figure 1, a perspective view of a helmet according to the invention;
  • - Figures 2a and 2b, detailed views showing respectively in plan and in section a cell of the cap constituting the helmet;
  • - Figures 3a and 3b, views showing respectively in perspective and in section another form of cell;
  • - Figures 4 and 5, other variants of cells seen in perspective;
  • - Figures 6a and 6b, perspective and sectional views of another form of cap according to the invention;
  • - Figure 7, a sectional view of a cell, with evidence of its aerodynamic function.

Le casque de protection suivant la présente invention est essentiellement constitué d'une calotte thermoformée, maintenue en place par tout moyen classique habituel, tel que par exemple un système à jugulaire non représenté pour la commodité du dessin.The protective helmet according to the present invention essentially consists of a thermoformed cap, held in place by any usual conventional means, such as for example a chinstrap system not shown for the convenience of the drawing.

La surface de la calotte 1 est conformée de façon à constituer un grand nombre d'alvéoles 2 dont les extrémités seules peuvent être en contact avec le crâne de l'utilisateur. Entre ces zones de contact de surface totale limitée, l'air peut circuler de façon continue, permettant le refroidissement de la tête. Cet effet peut encore être accru en aménageant des trous à différents endroits de la calotte 1, notamment à la surface des alvéoles 2. Ces dernières constituent des absorbeurs d'énergie, car elles sont déformables par flambage sous l'action d'un impact.The surface of the cap 1 is shaped so as to constitute a large number of cells 2, the ends of which alone can be in contact with the skull of the user. Between these contact zones of limited total area, air can circulate continuously, allowing the cooling of the head. This effect can be further increased by arranging holes in different places of the cap 1, in particular on the surface of the cells 2. The latter constitute energy absorbers, because they are deformable by buckling under the action of an impact.

Différentes réalisations desdites alvéoles sont possibles, telles que circulaires (figures 2a et 2b), rectangulaires (figures 3a et 3b), ovales (figure 4), polygonales (figure 5), etc. La répartition des alvéoles 2 sur la calotte 1 est adaptée en fonction des différentes zones considérées, notamment selon la fréquence statistique des chocs accidentels à la surface du crâne.Different embodiments of said cells are possible, such as circular (Figures 2a and 2b), rectangular (Figures 3a and 3b), oval (Figure 4), polygonal (Figure 5), etc. The distribution of the cells 2 on the cap 1 is adapted as a function of the different zones considered, in particular according to the statistical frequency of accidental impacts on the surface of the skull.

De cette façon, cette disposition permet d'amortir des chocs quelle que soit la localisation du point d'impact sur la calotte crânienne : notons encore que la surface de contact entre les al- véoles et le crâne est suffisante pour éviter tout effet de poinçonnage. La calotte amortissante suivant l'invention peut revêtir un grand nombre de formes, suivant le paramètre considéré. C'est ainsi que selon les figures 6a et 6b, les alvéoles sont remplacées par des nervures 60, ayant la même fonction. Dans ce cas, cependant, on favorise tout particulièrement la circulation de l'air dans les nervures 60, ce qui permet un bon refroidissement et une aération constante de la tête, et participe ainsi au confort d'un cycliste fournissant.un effort important et continu.In this way, this arrangement makes it possible to damp shocks irrespective of the location of the point of impact on the calvaria: note again that the surface of contact between the Al - véoles and skull is sufficient to avoid any punching effect . The shock-absorbing cap according to the invention can take a large number of forms, depending on the parameter considered. Thus, according to Figures 6a and 6b, the cells are replaced by ribs 60, having the same function. In this case, however, the circulation of air in the ribs 60 is particularly favored, which allows good cooling and constant ventilation of the head, and thus contributes to the comfort of a cyclist providing significant effort and continued.

A la figure 7, la forme de l'alvéole 70 est spécialement étudiée sous son aspect aérodynamique, de façon à minimiser son aspect de piège à air, en favorisant par conséquent le bon écoulement des filets d'air 71.In FIG. 7, the shape of the cell 70 is specially studied in its aerodynamic aspect, so as to minimize its appearance as an air trap, by consequently promoting the good flow of the air streams 71.

Les calottes 1 peuvent être réalisées de diverses manière, soit par moulage par injection, soit par thermoformage à partir de matières thermoplastiques telles que des polyoléfines (polyéthylène haute et basse densité, polypropylène et copolymères), des copolymères acrylonitrile - butadiène - styrène, des polyamides, polycarbonates, polyurethane, copolymères éthylène - acétate de vinyle. P.V.C. etc., ou réalisées par vulcanisation d'élastomères moulés par compression ou transfert ou par réticulation de produits coulés tels que des polyuréthanes, etc. Les emboutis formant alvéoles peuvent être aussi réalisés par extrusion-soufflage, rotomoulage ou gélification par exemple de polyéthylène basse densité.The caps 1 can be produced in various ways, either by injection molding or by thermoforming from thermoplastic materials such as polyolefins (high and low density polyethylene, polypropylene and copolymers), acrylonitrile - butadiene - styrene copolymers, polyamides , polycarbonates, polyurethane, ethylene - vinyl acetate copolymers. P.V.C. etc., or produced by vulcanization of compression or transfer molded elastomers or by crosslinking of cast products such as polyurethanes, etc. The stamps forming cells can also be produced by extrusion blow molding, rotational molding or gelation, for example of low density polyethylene.

Il est possible de réaliser la calotte nervurée alvéolée en une opération, mais il peut être aussi envisagé pour des raisons de simplicité de réalisation de former les emboutis et les rapporter ensuite à la calotte par soudage, collage, agrafage etc. De même la calotte alvéolée peut être réalisée en plusieurs éléments assemblés ensuite.It is possible to produce the honeycomb ribbed cap in one operation, but it can also be envisaged for reasons of simplicity of embodiment to form the stampings and then bring them back to the cap by welding, gluing, stapling, etc. Similarly, the alveolate cap can be made of several elements then assembled.

Par ailleurs la faible épaisseur de la calotte et sa souplesse permettent d'ajuster à la taille de la tête du cycliste le casque par simple réglage de la jugulaire en disposant d'un nombre limité de tailles de casques. Toutefois, il est aussi envisageable d'adjoindre à la calotte un matériau de confort au contact de la tête assurant l'adéquation de la taille du casque à celle de la tête. Ce système d'adaptation peut être du type "tour de tête" en mousse, réglable et fixé au casque par soudage collage ou agrafage, ou encore "coiffe flottante", constitué d'un tour de tête et de sangles d'adaptation du casque sur la tête.Furthermore, the small thickness of the cap and its flexibility allow the helmet to be adjusted to the size of the cyclist's head by simple adjustment of the chin strap by having a limited number of helmet sizes. However, it is also conceivable to add to the cap a material of comfort in contact with the head ensuring the adequacy of the size of the helmet to that of the head. This adaptation system can be of the foam "head circumference" type, adjustable and fixed to the helmet by bonding or stapling welding, or even "floating cap", consisting of a head circumference and helmet adaptation straps on the head.

Claims (4)

1. Casque protecteur notamment pour cycliste ou cyclomotoriste, caractérisé par le fait qu'il est essentiellement constitué par une calotte (1) thermoformée en matière synthétique comportant des dépressions telles que des alvéoles (2) ou des nervures (60) dont seules les extrémités opposées à celles qui sont solidaires de la calotte peuvent rentrer en contact avec le crâne de l'utilisateur, lesdites alvéoles constituant ainsi des absorbeurs d'énergie et déterminant entre elles des voies de circulation d'air pour le refroidissement de la tête.1. Protective helmet especially for cyclists or moped riders, characterized in that it is essentially constituted by a cap (1) thermoformed in synthetic material comprising depressions such as cells (2) or ribs (60) of which only the ends opposite to those which are integral with the cap can come into contact with the skull of the user, said cells thus constituting energy absorbers and determining between them air circulation paths for cooling the head. 2. Casque selon la revendication 1, caractérisé en ce que la calotte (1) et les alvéoles (2) comportent des trous pour faciliter la circulation de l'air.2. Helmet according to claim 1, characterized in that the cap (1) and the cells (2) have holes to facilitate the circulation of air. 3. Casque selon la revendication 1, caractérisé en ce que la répartition des alvéoles (2) à la surface de la calotte (1) est adaptée en fonction des zones qui correspondent aux impacts statistiquement les plus fréquents.3. Helmet according to claim 1, characterized in that the distribution of the cells (2) on the surface of the cap (1) is adapted as a function of the zones which correspond to the most frequent statistically impacts. 4. Casque selon la revendication 1, caractérisé en ce que la forme des alvéoles (2) est étudiée sous son aspect aérodynamique de façon à minimiser le freinage de l'air et donc à favoriser le bon écoulement de ses filets (71).4. Helmet according to claim 1, characterized in that the shape of the cells (2) is studied in its aerodynamic aspect so as to minimize the braking of the air and therefore to promote the good flow of its nets (71).
EP83400586A 1982-03-22 1983-03-22 Cyclist's helmet with an alveolus structure Withdrawn EP0090720A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8204838A FR2523411A1 (en) 1982-03-22 1982-03-22 HELMET WITH ALVEOLAR STRUCTURE, IN PARTICULAR FOR CYCLIST OR CYCLOMOTORIST
FR8204838 1982-03-22

Publications (1)

Publication Number Publication Date
EP0090720A1 true EP0090720A1 (en) 1983-10-05

Family

ID=9272249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400586A Withdrawn EP0090720A1 (en) 1982-03-22 1983-03-22 Cyclist's helmet with an alveolus structure

Country Status (3)

Country Link
EP (1) EP0090720A1 (en)
ES (1) ES278980Y (en)
FR (1) FR2523411A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0127811A2 (en) * 1983-06-04 1984-12-12 Schuberth-Werk GmbH &amp; Co. KG Safety helmet
EP0131929A2 (en) * 1983-07-15 1985-01-23 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Safety helmet for motor cyclists
FR2676336A1 (en) * 1991-05-14 1992-11-20 Stand 21 Sa Ventilated racing helmet with controlled aerodynamics
WO1994002042A1 (en) * 1992-07-16 1994-02-03 Willi Hans Velke Protective helmet
EP0618773A1 (en) * 1991-11-01 1994-10-12 Athletic Helmet, Inc. Protective helmet and method and apparatus for molding same
US5561866A (en) * 1992-06-27 1996-10-08 Leslie Ross Safety Helmets
EP0815754A1 (en) * 1996-06-24 1998-01-07 Institute of Occupational Safety and Health, Council of Labor Affairs Industrial safety helmet
GB2400301A (en) * 2003-04-10 2004-10-13 Helmet Integrated Syst Ltd Protective helmet shell
US7676854B2 (en) 2004-04-07 2010-03-16 Crescendo As Helmet, helmet liner and method for manufacturing the same
DE102014110480A1 (en) * 2014-07-24 2016-01-28 ABUS August Bremicker Söhne KG Bicycle helmet
USD759899S1 (en) 2014-07-24 2016-06-21 ABUS August Bremicker Söhne KG Bicycle helmet

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5083320A (en) * 1990-12-24 1992-01-28 Athletic Helmet, Inc. Protective helmet with self-contained air pump

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR649059A (en) * 1928-02-15 1928-12-18 Protective helmet
GB451483A (en) * 1936-01-21 1936-08-06 Frank Stevens Improvements in helmets and the like
DE664959C (en) * 1938-09-10 Erich Destner Protective helmet, especially for miners
US3783450A (en) * 1973-02-05 1974-01-08 Connor W O Hockey helmet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE664959C (en) * 1938-09-10 Erich Destner Protective helmet, especially for miners
FR649059A (en) * 1928-02-15 1928-12-18 Protective helmet
GB451483A (en) * 1936-01-21 1936-08-06 Frank Stevens Improvements in helmets and the like
US3783450A (en) * 1973-02-05 1974-01-08 Connor W O Hockey helmet

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0127811A3 (en) * 1983-06-04 1985-01-23 Schuberth-Werk GmbH &amp; Co. KG Safety helmet
US4564959A (en) * 1983-06-04 1986-01-21 Schuberth-Werk Gmbh & Co. Kg Crash helmet
EP0127811A2 (en) * 1983-06-04 1984-12-12 Schuberth-Werk GmbH &amp; Co. KG Safety helmet
EP0131929A2 (en) * 1983-07-15 1985-01-23 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Safety helmet for motor cyclists
EP0131929A3 (en) * 1983-07-15 1985-03-06 Bayerische Motoren Werke Aktiengesellschaft Safety helmet for motor cyclists or the like
FR2676336A1 (en) * 1991-05-14 1992-11-20 Stand 21 Sa Ventilated racing helmet with controlled aerodynamics
EP0618773A4 (en) * 1991-11-01 1995-01-25 Athletic Helmet Inc Protective helmet and method and apparatus for molding same.
EP0618773A1 (en) * 1991-11-01 1994-10-12 Athletic Helmet, Inc. Protective helmet and method and apparatus for molding same
US5561866A (en) * 1992-06-27 1996-10-08 Leslie Ross Safety Helmets
WO1994002042A1 (en) * 1992-07-16 1994-02-03 Willi Hans Velke Protective helmet
EP0815754A1 (en) * 1996-06-24 1998-01-07 Institute of Occupational Safety and Health, Council of Labor Affairs Industrial safety helmet
GB2400301A (en) * 2003-04-10 2004-10-13 Helmet Integrated Syst Ltd Protective helmet shell
US7676854B2 (en) 2004-04-07 2010-03-16 Crescendo As Helmet, helmet liner and method for manufacturing the same
DE102014110480A1 (en) * 2014-07-24 2016-01-28 ABUS August Bremicker Söhne KG Bicycle helmet
USD759899S1 (en) 2014-07-24 2016-06-21 ABUS August Bremicker Söhne KG Bicycle helmet

Also Published As

Publication number Publication date
FR2523411B1 (en) 1984-06-22
ES278980U (en) 1985-04-01
FR2523411A1 (en) 1983-09-23
ES278980Y (en) 1985-11-01

Similar Documents

Publication Publication Date Title
EP0090720A1 (en) Cyclist&#39;s helmet with an alveolus structure
EP2974612B1 (en) Damping helmet
US9943747B2 (en) Liner assembly for a protective helmet
US5023958A (en) Aerodynamic bicycle helmet
EP3790422B1 (en) Protective helmet having a mechanical sizing adjustment system
CA2770713A1 (en) Helmet
US20190090574A1 (en) Interlocking co-molded helmet energy management liner
CA2425253C (en) Safety headgear
US6055675A (en) Protective bicycle helmet having a ventilated rear support structure
AU2001295266A1 (en) Safety headgear
EP0394726A1 (en) Protective garment
US10258099B2 (en) Helmet goggle strap holder
US20180064198A1 (en) Helmet
US20200046057A1 (en) Helmet with front end fit system elastic connectors
EP3231307A1 (en) Sports helmet
CN212325589U (en) EPS/EPP double-layer hollow buffer built-in security helmet
US20190343214A1 (en) Helmet with foam layer having an array of holes
KR101772773B1 (en) Detachable Helmet
JPS6315311Y2 (en)
JP2021147731A (en) Helmet
FR2557437A3 (en) Inner crown for protective helmets
FR2473855A1 (en) Safety helmet for motorcyclist - has outer rigid cap and inner cap moulded with gutter to hold intermediate padding
EP2205112B1 (en) Protection helmet including a cap with flexible flaps
EP1614362A1 (en) Cyclists&#39; helmet
JPS6315309Y2 (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19830325

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LI NL SE

Kind code of ref document: A1

Designated state(s): AT BE CH DE GB IT LI NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850123

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SACREST, JEAN

Inventor name: ROUBINET, PIERRE

Inventor name: GREFFIER, GUY