EP2205112A2 - Casque de protection avec une calotte comprenant des ailettes flexibles - Google Patents
Casque de protection avec une calotte comprenant des ailettes flexiblesInfo
- Publication number
- EP2205112A2 EP2205112A2 EP08871779A EP08871779A EP2205112A2 EP 2205112 A2 EP2205112 A2 EP 2205112A2 EP 08871779 A EP08871779 A EP 08871779A EP 08871779 A EP08871779 A EP 08871779A EP 2205112 A2 EP2205112 A2 EP 2205112A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fins
- cap
- helmet according
- helmet
- flexible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 38
- 238000013016 damping Methods 0.000 claims abstract description 14
- -1 polypropylene Polymers 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 5
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- 239000002861 polymer material Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 239000005060 rubber Substances 0.000 claims description 2
- 239000004753 textile Substances 0.000 claims description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims 1
- 239000005977 Ethylene Substances 0.000 claims 1
- 239000004698 Polyethylene Substances 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 229920002554 vinyl polymer Polymers 0.000 claims 1
- 239000004744 fabric Substances 0.000 abstract 1
- 210000003128 head Anatomy 0.000 description 22
- 239000000463 material Substances 0.000 description 6
- 239000005038 ethylene vinyl acetate Substances 0.000 description 4
- 210000002105 tongue Anatomy 0.000 description 4
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 241001417523 Plesiopidae Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/32—Collapsible helmets; Helmets made of separable parts ; Helmets with movable parts, e.g. adjustable
- A42B3/324—Adjustable helmets
-
- 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
- A42B3/06—Impact-absorbing shells, e.g. of crash helmets
- A42B3/066—Impact-absorbing shells, e.g. of crash helmets specially adapted for cycling helmets, e.g. for soft shelled helmets
-
- 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
- A42B3/14—Suspension devices
- A42B3/145—Size adjustment devices
Definitions
- the invention relates to a protective helmet comprising a protective cap intended to cap the head of the user, composed of a damping cap and at least one outer shell fixed on at least a portion of the face outer cap of the calotte, said cap having a front portion, a rear portion limited downwardly by a lower edge, two opposite side portions and a top portion.
- the protective cap 1 covering the head of the user is perfectly rigid, composed of a cushioning cap 2 on the outer face of which is fixed a rigid outer shell 3.
- a cap 1 is held by reversibly locking retaining straps (not shown), possibly combined with the actuation of a clamping element 4 of the attached head inside the cap 1.
- FIG. 1 Another protective helmet is known from US5815847 which discloses a protective helmet having a protective cap made of a rigid outer shell and inside which are reported a plurality of deformable damping elements in the form of bands, oriented in different directions.
- a device ensures a tightening around the head of the damping strips.
- the clamping device is composed of a plurality of straps that come outside the rigid shell through closed perimeter lights, that is to say non-emerging on the lower edge of the rear portion. Actuation of the straps causes a deformation of the strip-shaped damping elements only to create a tightening of the head, but does not create any deformation of the shell (which requires the presence of lights in the hull).
- the object of the invention is to provide a protective helmet for optimizing comfort, aesthetics and safety regardless of the head morphology of the user.
- the helmet according to the invention is remarkable in that the protective cap comprises at least one notch extending from the front portion or from one of the lateral portions, and opening on the lower edge or on a notch made in the rear portion and open on said lower edge, said notch defining on either side two flexible fins each having a free end on the side the rear portion, the helmet comprising a clamping adjustment element of the cap integral with the free ends of the fins, and the actuation of which adjusts the distance separating said free ends by bending fins.
- each notch defines two flexible fins whose bending state is adjusted by the actuation of the adjustment element.
- each fin approaches the head until the entire protective cap is closest to the head, and remove any dead space between the cap and the head.
- the fact that the cuts originate at the front portion and / or the side portions, and are oriented towards the rear portion (on a notch or directly on the bottom edge), has a first fundamental advantage, namely that the notches thus produced may be of great length, for example greater than 10 cm depending on the size of the cap. Indeed, notches of great length delimit flexible fins which also have a great length.
- a fin of great length makes it possible, for a given deflection of the fin (deflection directly related to the anatomy of the head), to limit the state of internal stress of the material of the cap, in particular at the level of the departure of the 'notch. This results in a strengthening of the resistance of the given crash helmet. Or conversely, long fins allow a wider range of head size adjustment while maintaining a resistance at least equal.
- Notches according to the invention have a second fundamental advantage, namely an excellent possibility of adaptation to all head morphologies. Indeed, all the fins flex to come in contact with the head regardless of its shape, and this movement of the fins is accompanied by an approximation of the remainder of the cap, that is to say the top portion and the front portion, until contact with the head, which would not be the case with "radial" fins all departing only from the summit portion.
- the third fundamental advantage lies in the fact that notches arranged according to the invention allow all the free ends of the flexible fins thus defined are all concentrated in the rear portion.
- a control element which is on the one hand of small dimension, and on the other hand completely located in the rear portion.
- the protective cap has sliding zones between the damping cap and the outer shell
- the cushioning cap is made of polymer foam, polypropylene type, possibly elastomerized polystyrene, polyethylene, ethylene vinyl acetate (EVA), polyurethane or base viscoelastic silicone, or a combination of these elements, having good compression damping characteristics and flexural flexibility
- the outer shell is made of thermoplastic polymer material
- the outer shell is made of a composite material of the type consisting of at least one layer of fibers impregnated with a thermoplastic or thermosetting resin
- the fins comprise means for sliding-free passage of holding straps and / or structural reinforcements connecting the side portions
- the adjusting member comprises a toothed bar, independent and separable from the cap, and whose teeth cooperate with automatic pawls equipping the free ends of the fins
- the adjusting element comprises a rack integral with a fin , and intended to cooperate via a toothed pinion with a second rack integral with another fin, the adjustment
- FIG. 1 shows a protective helmet according to the prior art
- FIG. 2 is a rear perspective view of a first embodiment of a protective helmet according to the invention
- FIG. 3 is a rear perspective view of a second embodiment of a protective helmet according to the invention, without the adjustment element
- FIG. 4 is a rear perspective view of a third embodiment.
- FIG. 5 is a rear view of a fourth embodiment of a protective helmet according to the invention, equipped with a first example of an adjustment element
- FIG. 6 is a rear view of the fourth embodiment, equipped with a second exemplary adjustment element
- FIG. 1 shows a protective helmet according to the prior art
- FIG. 2 is a rear perspective view of a first embodiment of a protective helmet according to the invention
- FIG. 3 is a rear perspective view of a second embodiment of a protective helmet according to the invention, without the adjustment element
- FIG. 4 is a rear perspective view of a third embodiment.
- FIG. 5 is a rear view of a fourth embodiment of a protective helmet according to the
- FIG. 7 is a rear view of the second embodiment, equipped with a third example of an adjustment element
- FIG. 8 is a rear view of the fourth embodiment, equipped with a fourth example of an adjustment element
- FIG. 9 is a rear perspective view of the fourth embodiment without adjustment element, and with retaining straps
- Figure 10 is a perspective view in front of a fifth embodiment with sliding structural reinforcements which connect the lateral portions.
- the first embodiment of a protective helmet according to the invention mainly comprises a protective cap 5 for capping the user's head.
- the protective cap 5 consists of an internal cushioning cap 6, having a generally convex outer surface on which is fixed an outer shell 7.
- the shell 7 covers the entire outer surface 6.
- the shell 7 is fixed on the entire surface of contact with the cap 7.
- the cap 6 and the shell 7 constitute a one-piece assembly.
- the cap 5 conventionally has a front portion 8 for the user's forehead, a rear portion 9 for the occiput limited downwardly by a bottom edge 10, two opposite side portions 11a, 11b for the sides of the cranial box, and a top portion 12.
- the portions 8, 9, 11a, 11b and 12 are delimited by dotted lines in dashed lines in FIG.
- An indentation 13 is made in the rear portion 9 and open on the lower edge 10.
- the protective cap 5 has four notches 14 extending from the front portion 8, each passing through the summit portion 12 and opening on the notch 13. Parallel to the notches 14, the cap 5 has a notch 15 connecting each of the lateral portions 11a, 11b to the notch 13. Each notch 14 or 15 delimits on either side two flexible fins 16 each having a free end on the side of the rear portion 9.
- the cap 5 shown in Figure 2 thus comprises six notches 14 and 15, four of which 14 extend from the front portion 8 and two of which 15 extend from one of the side portions 11a, 11b, delimiting seven flexible fins 16.
- each flexible fin 16 is composed of a shell thickness and / or calotin thickness.
- the outer shell 7 is made of thermoplastic polymer material, such as polycarbonate, acrylonitrile butadiene styrene (or ABS), polystyrene, glycolized polyethylene terephthalate (PETG), polyvinyl chloride (or PVC).
- the outer shell 7 is made of composite material of the type consisting of at least one layer of fibers impregnated with a thermoplastic resin preferably, or thermosetting.
- the fibers may be carbon, glass, aramid, Kevlar, vegetable fibers, polypropylene.
- the thermoplastic resin may be polypropylene, polyurethane or polyamide type.
- the thermosetting resin may be of the Polyester, Epoxy or Vinylester type.
- the cushioning cap 6 is polymer foam, polypropylene type, optionally elastomeric polystyrene, polyethylene, ethylene vinyl acetate (EVA) polyurethane or viscoelastic silicone base, or a combination thereof, having good compression damping and flexural flexibility characteristics.
- EVA ethylene vinyl acetate
- the case of a combination of these polymer foams makes it possible to respond distinctly and optimally to the very often conflicting characteristics of impact resistance and flexibility; the traditional expanded polystyrene remains the best damping material whatever the climatic conditions of the test, it can be supplemented locally by flexibilizing inserts EVA type or polypropylene expanded, more or less large, to provide the necessary flexibility,
- outer shell 7 covers the entire outer surface of the cap 6, the outer shell 7 may cover only part of the cap 6 so as to leave bare the remaining part of the outer face of the calotin 6, especially when it is composed of flexibilizing inserts of EVA or expanded polypropylene type.
- this covering can be achieved with the aid of several outer shells 7 each covering a different outer face portion of the cap 6. In other words, at least one outer shell 7 is fixed on the outside of the calotin 6.
- each of these shells 7 may be fixed only on a part of the surface in a variant improving the flexibility of the flexible fins 16, it is possible to provide that at each fin 16, the protective cap 5 has sliding zones between the cap 6 and the outer shell 7 corresponding to said fin 16, either by locally removing the use of glue or by means of a release film. In this case, the shell (s) 7 is (are) not fixed (s) to the cap 6 at the level of the flexible fins 16.
- FIG. 3 illustrates a second embodiment of a bicycle helmet according to the invention.
- the references attributed to the different elements are retained relative to the first mode.
- the second mode embodiment is distinguished from the first mode mainly by the fact that the rear portion 9 no longer has indentation 13.
- two notches 17 extend from the front portion 8, each through the summit portion 12 and opening directly on the lower edge 10.
- the notches 17 of the second embodiment are similar to the notches 14 of the first embodiment, with the difference that they open directly on the lower edge 10 of the rear portion 9 and no longer on a notch 13
- Each notch 17 delimits on each side two flexible fins 16 each having a free end on the side of the rear portion 9.
- the two notches 17 of the protective cap 5 define three flexible fins 16.
- the damping hood 6 it is possible to provide, in a third embodiment, for the damping hood 6 to be non-homogeneous, being constituted by a first material at the level of the flexible fins 16, and by a second material 6.
- a solution may be advantageous for choosing a material at the level of the flexible fins 16 which has better flexibility characteristics than on the rest of the cap 6.
- the protective cap 5 of the third embodiment does not include no cut extending from the front portion 8. By against it has two notches 18 connecting each of the side portions 11a, 11b to the notch 13. Each notch 18 delimits on either side two flexible fins 16 each having a free end on the side of the rear portion 9.
- the cap thus has four notches 18 which extend from one of the side portions 11a, 11b, and which del mimic four flexible fins 16 and a more rigid portion composed of the front portion 8 and the top 12.
- the side portions 11a, 11b are intended to bend.
- each of the three embodiments described above is equipped with a control element of the tightening the cap 5 after it is disposed on the head of the user.
- the adjustment element is integral with the free ends of the flexible fins 16, that is to say on the side of the rear portion 9. Its actuation makes it possible to adjust the distance separating said free ends by bending of the fins 16.
- Four examples of such an adjustment element are respectively shown in Figures 5 to 8.
- the fourth embodiment of protective helmet is identical to the third embodiment, with the difference that the cap 6 is homogeneous.
- the third embodiment in the fourth embodiment, only the side portions 11a, 11b are intended to bend.
- the third example of adjustment element (FIG. 7) is, for its part, mounted on the second embodiment of FIG. 3.
- the first example of an adjusting element is constituted by a toothed bar 19, independent and separable from the protective cap 5, whose teeth cooperate with automatic pawls equipping the free ends of the two flexible tongues 16 Closer to the bottom edge 10.
- the unlocking of the adjusting element may, for example, be performed by actuating the pawls to a release position of the toothed bar 19.
- the second exemplary adjustment element comprises a rope 20, here in a closed loop, interconnecting the free ends of the fins.
- the third example of adjustment element comprises a flexible tongue 22 integral with a flexible fin 16 (one of the two lateral wings).
- the tongue 22 comprises a distal portion intended to be fixed against a proximal portion by means of automatic hooking type Velcro ® self-gripping strips, after passing through a ring 23 secured to another flexible fin 16 (the other of the two side fins).
- the fourth example of adjustment element comprises a rack 24 secured to a flexible fin 16, and intended to cooperate via a toothed gear 31 with a second rack 24 secured to another flexible fin 16.
- the two Flexible tabs 16 are those closest to the bottom edge 10.
- An equivalent solution can be provided, using a worm driven by a wheel.
- FIG. 9 illustrates that, whatever the adjustment element which is equipped with the fourth embodiment of the protective helmet, the flexible fins 16 of this helmet may comprise means for free-sliding passage of holding straps 30 of the jugular.
- Such means of passage may consist of slots 25 formed in the thickness of the cap 6 at the level of the flexible fins 16.
- FIG. 10 represents a fifth embodiment of a bicycle helmet according to the invention.
- the protective cap 5 of this helmet has a central notch 26 extending from the front portion 8, and opening on a notch 13 of the rear portion.
- the cap 5 comprises at least one notch 27 connecting the lateral portion 11a to the notch 13, and at least one notch connecting the opposite lateral portion to the notch 13.
- Each notch 26 or 27 delimits on the other hand two flexible fins 16 each having a free end on the side of the rear portion.
- the fins 16 comprise sliding means for free sliding structural reinforcements 28 connecting the lateral portions between them.
- Such means of passage may consist of lumens 29 formed in the thickness of the cap 6 at the level of the flexible fins 16.
- the structural reinforcements 28 are therefore sliding relative to the fins 16 equipped with passage means.
- the flexible fins can be connected locally to each other by flexible connecting elements, substantially elastic, textile webbing type, elastomerized plastic or rubber. These connecting elements do not call into question the flexibility of the structure, but act as spacing limiter during an impact, thanks to their own yield strength.
Landscapes
- Helmets And Other Head Coverings (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0707846A FR2923360B1 (fr) | 2007-11-08 | 2007-11-08 | Casque de protection avec une calotte comprenant des ailettes flexibles. |
PCT/FR2008/001545 WO2009095550A2 (fr) | 2007-11-08 | 2008-11-03 | Casque de protection avec une calotte comprenant des ailettes flexibles |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2205112A2 true EP2205112A2 (fr) | 2010-07-14 |
EP2205112B1 EP2205112B1 (fr) | 2012-03-07 |
Family
ID=39473439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08871779A Active EP2205112B1 (fr) | 2007-11-08 | 2008-11-03 | Casque de protection avec une calotte comprenant des ailettes flexibles |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2205112B1 (fr) |
AT (1) | ATE547961T1 (fr) |
FR (1) | FR2923360B1 (fr) |
WO (1) | WO2009095550A2 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9907347B2 (en) | 2014-07-03 | 2018-03-06 | Bell Sports, Inc. | Flex spring helmet |
US10420385B2 (en) | 2014-04-25 | 2019-09-24 | Specialized Bicycle Components, Inc. | Bicycle helmet fit system |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2550575A (en) * | 1945-06-11 | 1951-04-24 | Chicago Eye Shield Company | Adjustable headband construction |
GB8630459D0 (en) * | 1986-12-19 | 1987-01-28 | Secr Defence | Impact protection helmet |
US5271103A (en) * | 1992-10-19 | 1993-12-21 | Darnell Eric A | Impact protective headgear |
IT1284834B1 (it) * | 1996-09-30 | 1998-05-22 | Camau System Di Casale & C S N | Dispositivo per adattare e fissare un casco alla testa dell'utente. |
US5815847A (en) * | 1997-06-23 | 1998-10-06 | Ampac Enterprises, Inc. | One size fits all baseball batter's helmet |
US6154889A (en) * | 1998-02-20 | 2000-12-05 | Team Wendy, Llc | Protective helmet |
US6367090B1 (en) * | 2001-03-07 | 2002-04-09 | Sang Jun Im | Reversible two color protective headgear and blank therefor |
US7246383B2 (en) * | 2004-05-27 | 2007-07-24 | Bell Sports, Inc. | Fit adjustment mechanism for helmets |
US7958573B2 (en) * | 2006-01-19 | 2011-06-14 | Gentex Corporation | Size adjustable safety and comfort liner for a helmet |
-
2007
- 2007-11-08 FR FR0707846A patent/FR2923360B1/fr active Active
-
2008
- 2008-11-03 WO PCT/FR2008/001545 patent/WO2009095550A2/fr active Application Filing
- 2008-11-03 AT AT08871779T patent/ATE547961T1/de active
- 2008-11-03 EP EP08871779A patent/EP2205112B1/fr active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2009095550A2 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10420385B2 (en) | 2014-04-25 | 2019-09-24 | Specialized Bicycle Components, Inc. | Bicycle helmet fit system |
US11337480B2 (en) | 2014-04-25 | 2022-05-24 | Specialized Bicycle Components, Inc. | Bicycle helmet fit system |
US9907347B2 (en) | 2014-07-03 | 2018-03-06 | Bell Sports, Inc. | Flex spring helmet |
Also Published As
Publication number | Publication date |
---|---|
FR2923360A1 (fr) | 2009-05-15 |
WO2009095550A3 (fr) | 2009-09-24 |
WO2009095550A2 (fr) | 2009-08-06 |
EP2205112B1 (fr) | 2012-03-07 |
FR2923360B1 (fr) | 2010-01-01 |
ATE547961T1 (de) | 2012-03-15 |
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