EP1293139A1 - Dispositif pour fixer de manière amovible la visière sur la calotte d'un casque, en particulier pour motocyclistes - Google Patents

Dispositif pour fixer de manière amovible la visière sur la calotte d'un casque, en particulier pour motocyclistes Download PDF

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Publication number
EP1293139A1
EP1293139A1 EP01830588A EP01830588A EP1293139A1 EP 1293139 A1 EP1293139 A1 EP 1293139A1 EP 01830588 A EP01830588 A EP 01830588A EP 01830588 A EP01830588 A EP 01830588A EP 1293139 A1 EP1293139 A1 EP 1293139A1
Authority
EP
European Patent Office
Prior art keywords
visor
cursor
seat
respect
rotating
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Withdrawn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
EP01830588A
Other languages
German (de)
English (en)
Inventor
Luca Gafforio
Alberto Salvetti
Gabriele Tomasoni
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.)
Opticos SRL
Original Assignee
Opticos SRL
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 Opticos SRL filed Critical Opticos SRL
Priority to EP01830588A priority Critical patent/EP1293139A1/fr
Priority to US10/243,940 priority patent/US20030088907A1/en
Priority to JP2002269963A priority patent/JP2003183925A/ja
Publication of EP1293139A1 publication Critical patent/EP1293139A1/fr
Withdrawn legal-status Critical Current

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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
    • A42B3/18—Face protection devices
    • A42B3/22—Visors
    • A42B3/221—Attaching visors to helmet shells, e.g. on motorcycle helmets
    • A42B3/222—Attaching visors to helmet shells, e.g. on motorcycle helmets in an articulated manner, e.g. hinge devices

Definitions

  • the present invention refers to a device for fastening or unfastening (unhooking) the visor from the cap (shell) of a helmet for motorcycling or for other sports use of the type comprising a front opening and two side devices for rotating the visor with respect to the front opening.
  • each pin presents retractable transverse catches, in particular spheres which, depending on their position, block or release the visor with respect to the pin. These catches are controlled by an elastic button which, when pressed, causes retraction of the catches and release of the visor.
  • the SHARK device enables the visor to be unfastened even when it is in its normal position of use, that is when it intercepts the front opening of the helmet.
  • the mechanism is not provided with safety blocks which, with the visor in closed position, would prevent the elastic button from being shifted for any reason, determining the consequent retraction of the spherical catches and the subsequent possible release of the visor.
  • the rotating visor in its normal using position where it intercepts the front opening of the helmet, is set in so that it is flush with the helmet itself.
  • This precaution as well as being aesthetically pleasing, has proved to be particularly useful for obtaining an efficient aerodynamic configuration of the helmet and thus favouring the forward movement of the rider in the air at high speeds and reducing the corresponding aerodynamic rustling.
  • the rotation devices on the sides of the helmet contemplate both a lifting support which, connected to the visor, may be manoeuvred by the user so that it lifts with respect to the cap, moving the visor away from the same, and a rotating body integral with the visor and constrained in rotation to the lifting support.
  • a visor release device composed of a button, or cursor, sliding axially with respect to the support and fitting into a corresponding retaining hole situated in a rear end of the visor.
  • Each button is engaged in the hole in the visor by an elastic element, such as a flat spring, and it may be pressed by the user so as to release it from the hole in the visor and thus free the visor from the rotating device.
  • each rear end of the visor engaging in each rotating device, slides on guides provided on a rotating body, secured in turn in a rotating manner on the support, and is held in the guides, preventing free sliding, by the engaging of the elastic button in the hole in the end of the visor.
  • the button as described above, is made elastic by a suitable elastic flat spring which, connected to the same button and bent when the latter is pressed, is deformed in such a way as to allow the button to translate by a sufficient distance to be released from the helmet.
  • the button can move (translate) with respect to the flat spring in a direction parallel to that of the guides in which the visor slides so as to allow optimum regulation of the positioning of the visor with respect to the cap.
  • the button and its elastic element cannot be deformed by bending to such an extent as to allow the release of the visor thanks to the presence, in the mechanism itself and in the side rotating and lifting devices connected to it, of suitable rests, strikers and interposed parts which limit the effects of any pressure exerted, for any cause, on the button.
  • Such a mechanism is described, for example, in the application for a patent EP 1.057.418 A1 in the name of OPTICOS S.r.l.
  • the user must first open the visor by activating the lifting system which, moving away from the side areas of the cap, causes the release of the safety blocks that control the elastic element; then press the two buttons that engage the holes in the ends of the visor itself to as to release the latter from the rotation devices and subsequently free it from the guides provided in the rotating body.
  • the unfastening device described above is extremely rapid to operate and ensures that in the normal using position of the visor, that is when it is intercepting the front opening of the helmet, the visor cannot be released, but its structure is very complex so it is not simple to make. Moreover, the force needed to cause the necessary bending of the flat spring and the extent of the spring deformation are variable according to the position of the button with respect to the spring, which means that there is a certain heterogeneity in the response of the unfastening device and it is necessary for this device to be oversized in order to prevent certain relative positions of the button with respect to the flat spring from causing axial sliding of the button which is insufficient to free the visor from the same device.
  • An aim of the present invention is to provide a device for unfastening the visor from the cap of a full helmet (or crash-helmet) which does not present the inconvenient aspects of the prior art and which is therefore extremely rapid to operate and, at the same time, particularly reliable.
  • Another aim of the present invention is to provide a device for unfastening the visor which does not allow the visor to be unfastened when it is intercepting the front opening of the helmet during use, and which is particularly efficient while being structurally simple.
  • the device for fastening/unfastening the visor from the cap of a helmet of the type with front opening and two side devices for rotating the visor from an operative position of interception of the front opening to a raised position of the visor itself comprises, for each rotating device, an elastic cursor fitted in such a way that it can be turned and can slide axially in a seat in the same rotation device.
  • This elastic cursor in its relative movement with respect to the seat, can move from an engaged to a disengaged position with a retaining hole made in a rear end of the visor.
  • the device further comprises means for allowing the axial sliding of the elastic cursor with respect to the seat exclusively in one or more predefined angular positions assumed by the same cursor with respect to the seat.
  • these means for allowing sliding of the cursor act by interposition of parts.
  • the elastic cursor of the device for fastening and unfastening the helmet can rotate together with the visor and the angular positions in which the cursor can slide axially with respect to the seat of the rotating device coincide with the angular position assumed by the cursor when the visor is in a raised position.
  • the cursor comprises projecting parts which, during its rotation with respect to the seat, rest and slide on a surface of the support itself.
  • This sliding surface comprises housings in which these projecting parts can be engaged to allow the traverse movement of the cursor with respect to the seat of the rotating device.
  • the cursor is rendered elastic by a helical spring inserted operatively between the abovementioned seat and the cursor itself.
  • Figures 1a, 1b show two side views, respectively with the visor raised and with the visor closed, of a crash-helmet 101 of the type in which the visor 105 intercepts the front opening 106 of the helmet 101 in an inset position flush with the cap 107.
  • the helmet 101 presents laterally, on opposite sides, two devices 102 suited for engaging with the rear ends 103 of the visor 105.
  • FIG 2 illustrates, in an exploded view, a device 102 for rotating the visor 105 which may be applied on a full helmet of the type shown figures 1a and 1b.
  • the rotating devices 102 situated on the sides of the cap 107 must first move the visor 105 away from the cap itself, so that the visor 105 is no longer embedded in the opening 106 of the helmet, and only later allow the rotation of the visor 105 into a raised position (figure 1a).
  • the rotating device in figure 2 comprises an assembly 2 for lifting and moving forward the visor 105 and a rotating body 4, constrained to the assembly 2 so as to be able to turn in relation to the latter, on which is connected the rear end 103 of the visor 105.
  • the assembly 2 is composed of a base 22, fixed firmly to the cap 107, and of elastic means 23 suited for retaining the visor in two stable positions, as well as a lifting support 1, connected to the visor 105, which allows it to be extracted from the opening 106 and lifted with respect to the cap 107.
  • the support 1 is provided with bottom surfaces coupled in a sliding manner to sloping slides, of a wedge shape, with their higher portion facing towards the front of the helmet, present on the base 22, and it is retained in a position of stable equilibrium by the means 23.
  • the relative sliding of the lifting support 1 with respect to the base 22 on the slides determines the moving of the visor 105 away from the cap 107 in a lateral direction and forward in a longitudinal direction.
  • the means 23 allow the support 1 to remain in a stable position whether it is raised or close to the base 22.
  • the rotating body 4 is coupled to the support 1 by means of a bush 7 and a rivet 8 which define the axis of rotation around which said body 4 is free to turn with respect to the support 1.
  • the body 4 is also secured to one of the rear ends 103 of the visor 105 and rotates together with said visor 105.
  • the device illustrated therefore allows the visor 105 to be extracted, moving it away from the front opening 106 and forward with respect to the cap 107, thanks to the lifting support 1, and then turned, thanks to the rotating body 4.
  • the device illustrated also comprises an elastic cursor 3, fitted in an elastic fashion, sliding and turning on the body 4, an intermediate plate 6, the function of which will be described below, and a helical spring 5 inserted between the plate 6 and the cursor 3.
  • the cursor 3, the spring 5 and the support 1 are part of the device for fastening/unfastening the visor in the present invention.
  • the device according to the present invention comprises a support 1 for the rotating device, which may be simply a fixed seat made in the cap 107, to which is connected, in such a way as to be able to turn and slide relatively, an elastic cursor 3 suited for engaging in a corresponding retaining hole 104 located in the rear end 103 of the visor 105.
  • the elastic cursor 3, in its axial movement with respect to the support 1, is also able to translate axially from a raised position, in which it is engaged in the hole 104 in the visor 105, to a lowered position, in which it is disengaged from the hole 104, only when corresponding to predefined angular positions reached by the same cursor 3 with respect to the support 1.
  • means are provided, preferably of the type with interfering parts, suited for allowing sliding of the cursor 3 with respect to the support 1 exclusively in these predefined angular positions.
  • the cursor 3 rotates together with the visor 105 and the angular positions in which the cursor 3 can slide with respect to the support 1 to free the visor 105, disengaging from the hole 104, correspond to the above-mentioned raised position of the same visor 105 (figure 1a).
  • the device in the present invention cannot be applied only to the extraction assembly 2 described above, but may also be generally used with visor extraction mechanisms of the prior art (for example the one described in the application for a patent EP 1.057.419 - A1 in the name of OPTICOS S.r.l.) or even with helmets in which the visor is not inset and therefore said extraction assembly 2 is not present. In the latter case, the support 1 and the base 22 coincide and the rotating body 4 can therefore rotate with respect to the cap 107.
  • Figure 3 shows a support 1, according to a preferred aspect of the present invention, which comprises a base surface 11 surrounded by a frame 9 within which the rotating body 4 may be engaged in rotation, and a hole 13 in which is inserted, for assembly, the rivet 8.
  • the surface 11 presents a plurality of grooves or holes 12 and the frame 9 is provided with two slots 10a, 10b, diametrically opposite each other, which constitute interruptions in the same frame 9.
  • the rotating body 4 comprises a lower cylindrical portion, or cup, suited for engaging with the support 1 and provided with a hole 17 for engaging with the bush 7 and the rivet 8, two through openings 15a, 15b diametrically opposite and other two openings 16a, 16b offset at a 90° angle with respect to the first ones.
  • the upper portion of the body 4 is also provided with two parallel guides 18a, 18b within which may be inserted, by sliding, the rear end portion 103 of the visor 105.
  • the bush 7 and the rivet 8 perform the function of a hinge for the body 4 with respect to the support 1 and may obviously be substituted with any other constraint able to hold together the body 4 and the support 1 in a relatively rotating manner.
  • the elastic cursor 3 comprises, as shown in figure 5, two shaped projecting parts 19a, 19b and is shaped in order to engage by catching in the retaining hole 104 in the rear end 103 in the visor 105.
  • the cursor 3 is kept away from the rotating body 4, and therefore from the support 1, thanks to the helical spring 5 which exerts a pushing action on the internal surface of the cursor 3 and on the intermediate plate 6.
  • the visor 105 is inserted in a removable fashion between the guides 18a, 18b, arranged on a plane at a right angle to the axis of rotation of the body 4, which allow the integral rotation of the visor 105 with the same body 4, and it is kept integral with the entire rotating device by the engaging of the elastic cursor 3 in the hole 104 thanks to the pushing action of the spring 5.
  • the projecting parts 19a, 19b of the cursor 3 engage in the through openings aperture 15a, 15b of the rotating body 4 and are shaped so that they guarantee that the same cursor 3 can rotate together with the body 4 and at the same time can travel with respect to the latter, in a direction coinciding with the axis of rotation, for a stroke of a given length.
  • the bottom ends of the projecting parts 19a, 19b rest on the top surface of the frame 9 present on the support 1 and can slide on it during the relative rotation of the rotating body 4, and therefore of the cursor 3, with respect to the same support 1.
  • the rotation of the body 4 therefore leads the projecting parts 19a, 19b to slide resting on the frame 9, until these projecting parts 19a, 19b are in the angular position corresponding to the housings (slots) 10a, 10b.
  • the projecting parts 19a, 19b of the cursor 3, the housings 10a, 10b and the frame 9 of the support 1, together with the helical spring 5, in this particular embodiment of the present invention, constitute the means for allowing the axial sliding of the cursor exclusively in predefined angular positions of the same cursor 3 with respect to the support 1.
  • the location of the housings 10a, 10b, as already mentioned, is such that it is only when the visor 105 is in the raised position shown in figure 1a, and therefore when the body 4 and the cursor 3 assume the corresponding angular position with respect to the lifting support 1, that the projecting parts 19a, 19b are arranged corresponding to the same housings 10a, 10b.
  • This configuration it is therefore possible to exert pressure on the same cursor 3 to provoke its movement towards the support 1, overcoming the resistance of the spring 5.
  • This movement has a sufficient stroke to free the hole 104 in the visor 105 from the same cursor 3 and thus allow sliding of the rear end 103 of the visor 105, which is no longer held back by the cursor, within the guides 18a, 18b of the rotating body 4.
  • the device for rotating the visor 105 might not present the rotating body 4 and the visor might only be held back by the cursor 3 in an integral manner with it, without being moved away from the object of the present invention.
  • the cursor 3 could be directly constrained, in rotation and in axial movement, to the support 1.
  • Figure 6 shows a side section of the intermediate plate 6 which, in the embodiment illustrated, rests on the bottom surface of the cylindrical portion of the rotating body 4 while the spring 5 rests on the plate 6.
  • the plate 6 comprises a central hole 20 and is provided with two teeth 21a, 21b which are inserted in the openings 16a, 16b of the body 4 and, passing through the rear wall of the latter, engage in the grooves or holes 12 provided on the surface 11 of the support 1.
  • the plate 6 is therefore integral with the body 4, thanks to the insertion of the teeth 21 a, 21 b in the openings 16a, 16b, and is elastically held in position by the helical spring 5.
  • the function of the teeth 21a, 21b which engage in the grooves 12 is to provide predefined angular positions which are substantially stable for rotating the visor.
  • This plate 6 and the corresponding grooves 12 may be omitted without this structurally or functionally influencing the device of the present invention.
  • FIG. 7 A general view in side section of the device in figure 2 assembled and in a position in which the lifting support is in a raised position and the cursor 3 is held back by the spring 5 is illustrated in figures 7 and 8 (for the sake of clarity the visor is not shown).
  • the user To unfasten the visor 105 from the rotating device illustrated, therefore, the user must first extract the visor 105 from the front opening 106 and at the same time move it away from the cap 107, then rotate it in a raised position and afterwards unfasten it.
  • the preliminary operation of extracting and rotating the visor thus contemplates that the user, if necessary using suitable means not illustrated for pushing the visor 105, should first provoke the raising and advance of the lifting support 1 with respect to the base 22 and then the rotation of the visor 105 with respect to the cap 107 and, consequently, the rotation of the rotating body 4 and of the retaining cursor 3 with respect to the support 1 in a raised position. Due to the interference between the teeth 21a, 21b of the plate 6 and the grooves 12 of the support 1, interference maintained thanks to the pushing action of the spring 5, the visor 105 can be lifted in steps in stable angular positions, identified by the geometric arrangement of the same grooves 12.
  • the projecting parts 19a, 19b slide on the top surface of the frame 9, resting on it and thus preventing, in the intermediate positions assumed during the rotation of the cursor 3 with respect to the support 1, the possible occurrence for any reason of an axial movement of the same cursor 3 towards the support 1.
  • the angular position of the projecting parts 19a, 19b with respect to the support 1 coincides with the location in which the housings 10a, 10b have been made in the frame 9 and so the bottom ends of the projecting parts 19a, 19b are no longer resting on the frame 9. So, in this position, any pressure of the cursor 3 that overcomes the resistance of the helical spring 5 determines its axial sliding approaching the support 1 and its disengagement from the retaining hole 104 in the rear end 103 of the visor 105. With the cursor 3 pressed it is therefore possible to move the visor 105 away from the rotating device, making it slide out of the guides 18a, 18b of the rotating body 4.
  • This operation allows the rapid release of the visor 105 from the same helmet 101 and its possible substitution.
  • the impossibility of unfastening the helmet in positions other than that of normal use in which it intercepts the front opening of the helmet is entrusted to the fact that only in the raised position of the visor 105 (figure 1a) can the cursor 3 be pressed to release (unhook) the visor 105.
  • the fastening of a new visor to the rotating devices of the type illustrated in the figures is performed by repeating the above-mentioned unfastening operations in reverse order and so, for each lateral device 102 of the helmet 101, it may be achieved by keeping the rotating body 4 in the visor unfastening position and inserting, while holding down the cursor 3, the rear end 103 of the new visor in the guides 18a, 18b of the rotating body 4, until the hole 104 corresponds to the cursor 3. At this point, to secure the visor it is sufficient to release the cursor 3 which, pushed by the spring 5, engages with the hole 104 and thus prevents sliding of the visor 105 in the guides 18a, 18b.
  • the device illustrated above may be simply adapted to rotating devices which do not contemplate the prior extraction of the visor and moreover, in a possible embodiment, the rotation of the cursor 3 may be independent of the rotation of the visor itself.
  • the new device for fastening and unfastening the visor from the cap of a helmet is particularly effective, considering the high speed of operation of each cursor 3, structurally simple and at the same time able to prevent the unfastening of the visor 105 when, during normal use of the helmet, the visor 105 is in the position of interception of the front opening 106.

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  • Helmets And Other Head Coverings (AREA)
  • Pivots And Pivotal Connections (AREA)
EP01830588A 2001-09-14 2001-09-14 Dispositif pour fixer de manière amovible la visière sur la calotte d'un casque, en particulier pour motocyclistes Withdrawn EP1293139A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01830588A EP1293139A1 (fr) 2001-09-14 2001-09-14 Dispositif pour fixer de manière amovible la visière sur la calotte d'un casque, en particulier pour motocyclistes
US10/243,940 US20030088907A1 (en) 2001-09-14 2002-09-16 Device for unhooking the visor from the cap of a crash-helmet, in particular for motorcycling
JP2002269963A JP2003183925A (ja) 2001-09-14 2002-09-17 オートバイ用等の安全ヘルメットのキャップからバイザを取り外す装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01830588A EP1293139A1 (fr) 2001-09-14 2001-09-14 Dispositif pour fixer de manière amovible la visière sur la calotte d'un casque, en particulier pour motocyclistes

Publications (1)

Publication Number Publication Date
EP1293139A1 true EP1293139A1 (fr) 2003-03-19

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Application Number Title Priority Date Filing Date
EP01830588A Withdrawn EP1293139A1 (fr) 2001-09-14 2001-09-14 Dispositif pour fixer de manière amovible la visière sur la calotte d'un casque, en particulier pour motocyclistes

Country Status (3)

Country Link
US (1) US20030088907A1 (fr)
EP (1) EP1293139A1 (fr)
JP (1) JP2003183925A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11213089B2 (en) 2019-06-04 2022-01-04 Msa Technology, Llc Protective helmet with face protection shield and linkage mechanism
EP4082376A1 (fr) * 2021-04-29 2022-11-02 Bell Sports, Inc. Mécanisme de paumelle

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2272658T3 (es) * 2002-09-12 2007-05-01 Opticos S.R.L. Dispositivo para montaje de una visera sobre la superficie de un casco.
US7814579B2 (en) * 2004-09-27 2010-10-19 Kbc America, Inc. Modular helmet
ITMI20051839A1 (it) * 2005-09-30 2007-04-01 Opticos Srl Congegno di controllo della posizione di una visiera per caschi di protezione
US8069499B2 (en) * 2006-05-15 2011-12-06 Shoei Co., Ltd. Helmet shield attaching mechanism, and helmet attached with the same
JP4976153B2 (ja) * 2007-02-06 2012-07-18 株式会社Ｓｈｏｅｉ ヘルメットサイズの調整方法
TW200836655A (en) * 2007-03-05 2008-09-16 Long Huei Helmet Co Compounded safety helmet
US7895678B2 (en) * 2007-08-06 2011-03-01 Bell Sports, Inc. Helmet with improved shield mount and precision shield control
JP5041906B2 (ja) * 2007-08-07 2012-10-03 株式会社Ｓｈｏｅｉ ヘルメット
KR100951343B1 (ko) * 2008-01-21 2010-04-08 주식회사 홍진에이치제이씨 헬멧
EP2218346B1 (fr) * 2009-02-13 2012-03-21 DSG Helmet S.r.l. Système de montage et démontage rapide pour visière de casque de protection
US8635715B2 (en) * 2010-12-09 2014-01-28 Cookie Composites Helmet and visor locking mechanism
KR101375530B1 (ko) * 2013-08-06 2014-03-17 (주)피앤지코퍼레이션 각도조정기능을 하는 캡사이드 연결장치를 갖는 썬캡
USD835851S1 (en) 2017-04-24 2018-12-11 Wm. T. Burnett Ip, Llc Helmet
US10786032B2 (en) 2019-01-18 2020-09-29 Cookie Composites Group Pty Ltd. Skydiving helmet and visor mounting system
USD934505S1 (en) 2019-01-28 2021-10-26 Cookie Composites Group Pty Ltd. Skydiving helmet

Citations (3)

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Publication number Priority date Publication date Assignee Title
EP0482731A1 (fr) * 1990-10-24 1992-04-29 Shoei Kako Kabushiki Kaisha Casque muni d'une visière
FR2785505A1 (fr) * 1998-11-06 2000-05-12 Shark Sa Amelioration aux casques a ecran pivotant
EP1057418A1 (fr) * 1999-05-27 2000-12-06 OPTICOS S.r.l. Dispositif pour accrocher la visière d'un casque pour motocyclistes et similaires

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Publication number Priority date Publication date Assignee Title
JPH0621370B2 (ja) * 1991-05-31 1994-03-23 昭栄化工株式会社 ヘルメットにおけるシールド板取付構造
US6260213B1 (en) * 1997-09-15 2001-07-17 Hong Jin Crown Croporation Shield connector for helmet
US6301721B1 (en) * 1999-03-12 2001-10-16 Michio Arai Shield fixing structure in helmet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482731A1 (fr) * 1990-10-24 1992-04-29 Shoei Kako Kabushiki Kaisha Casque muni d'une visière
FR2785505A1 (fr) * 1998-11-06 2000-05-12 Shark Sa Amelioration aux casques a ecran pivotant
EP1057418A1 (fr) * 1999-05-27 2000-12-06 OPTICOS S.r.l. Dispositif pour accrocher la visière d'un casque pour motocyclistes et similaires

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11213089B2 (en) 2019-06-04 2022-01-04 Msa Technology, Llc Protective helmet with face protection shield and linkage mechanism
EP4082376A1 (fr) * 2021-04-29 2022-11-02 Bell Sports, Inc. Mécanisme de paumelle
US11678710B2 (en) 2021-04-29 2023-06-20 Bell Sports, Inc. Hingeplate mechanism

Also Published As

Publication number Publication date
US20030088907A1 (en) 2003-05-15
JP2003183925A (ja) 2003-07-03

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