US20120036619A1 - Helmet - Google Patents

Helmet Download PDF

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Publication number
US20120036619A1
US20120036619A1 US11/662,462 US66246205A US2012036619A1 US 20120036619 A1 US20120036619 A1 US 20120036619A1 US 66246205 A US66246205 A US 66246205A US 2012036619 A1 US2012036619 A1 US 2012036619A1
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US
United States
Prior art keywords
coated
outer shell
net
energy absorbing
helmet according
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.)
Abandoned
Application number
US11/662,462
Inventor
Stefan Ytterborn
Jan Woxing
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.)
POC SWEDEN AB
Original Assignee
POC SWEDEN AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from SE0402137A external-priority patent/SE0402137D0/en
Priority claimed from SE0402497A external-priority patent/SE0402497D0/en
Application filed by POC SWEDEN AB filed Critical POC SWEDEN AB
Priority to US11/662,462 priority Critical patent/US20120036619A1/en
Assigned to POC SWEDEN AB reassignment POC SWEDEN AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WOXING, JAN, YTTERBORN, STEFAN
Publication of US20120036619A1 publication Critical patent/US20120036619A1/en
Abandoned 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
    • A42B3/06—Impact-absorbing shells, e.g. of crash helmets
    • A42B3/062—Impact-absorbing shells, e.g. of crash helmets with reinforcing means
    • A42B3/063—Impact-absorbing shells, e.g. of crash helmets with reinforcing means using layered structures
    • 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
    • A42B3/12—Cushioning devices

Definitions

  • the present invention concerns a helmet comprising at least a rigid outer shell and an inner portion of energy absorbing material.
  • the helmet is suitable for alpine sports, such as down hill skiing.
  • the main object of the present invention is to reduce the weight of a helmet.
  • the weight of the helmet is an important factor when it comes to the severity of, for example, skull and neck injuries due to a crash.
  • at least an upper portion of the rigid outer shell may have a thickness of 0.01-4 mm, preferably 0.1-1.0 mm, especially if the material of the outer shell is for example ABS, polycarbonate, lexan or the like. Other materials are also conceivable.
  • An advantage of using a thinner rigid outer shell at least partially in the helmet is that it will absorb more shock energy due to partial collapsing of the thin rigid outer shell in a crash. Another advantage is that due to the partial collapsing of the outer shell bouncing of the helmet against the hit surface is reduced or even prevented.
  • Another object of the present invention is to improve the protection against penetration, which needs to be compensated for at the thin rigid outer shell.
  • a solution is to provide a coated net, a coated woven or coated nonwoven material in the helmet, at least at the thin rigid outer shell, which is designed to withstand penetration of rocks, stones, branches and other objects that one may encounter in an action sport context and prevent that the object penetrates further through an inner portion of energy absorbing material of the helmet.
  • the helmet may comprise more than one layer of outer shell and more than one layer of energy absorbing material.
  • the coated net, woven or nonwoven material extends over at least the portion with the thin rigid outer shell but may extend over the whole area of the helmet.
  • the coated net, woven or nonwoven material may preferably be of unlaminated and/or unhardened fibres of, for example, glass, carbon or aramid, so that it keeps its soft, textile like properties.
  • the coating may preferably be a silicon carbide or any material that will more or less lock the fibres so that the fibres will not easily separate when an object, like a stone, is on the way to penetrate the material layer.
  • the coating locks the fibres in the net, woven or nonwoven material so that the fibres will not separate enough to allow an object to penetrate the material layer on impact.
  • the coated net, woven or nonwoven material is preferably arranged in a single-layer.
  • the net may be connected at its nodes, for example, by means of knots, glue or in any other way.
  • the coated net, woven or nonwoven material may be loosely fitted in the helmet and attached at the rim of the helmet. Grooves corresponding to the design of the net may be provided on the outside surface of the inner portion of energy absorbing material for the net to rest in.
  • the net or woven or nonwoven material may instead be glued, moulded by moulding the inner energy absorbing material directly into the rigid outer shell with the coated net, woven or nonwoven material in between, for example by means of in-moulding technique, or in any other way attached to the outer surface of the inner portion of energy absorbing material or to the inner surface of the outer shell.
  • FIG. 1 shows a helmet according to the invention with a portion of the rigid outer shell removed
  • FIG. 2 shows a cross sectional view of a portion of the helmet according to the invention.
  • a helmet 1 of the present invention is shown where a portion of a rigid outer shell 2 is taken away so that a coated net, woven or nonwoven material 3 is visible.
  • the helmet 1 comprises at least a rigid outer shell 2 and an inner portion of energy absorbing material 4 .
  • the outer shell 2 may comprise more than one layer, for example an outer polycarbonate layer and an inner glass fibre reinforced resin layer.
  • the inner portion of energy absorbing material 4 may comprise more than one layer, for example a layer of honeycomb material, a layer of expanded polystyrene and a layer of soft foamed plastic.
  • At least a portion, preferably the upper portion, of the rigid outer shell is made up with a thin material layer having a thickness of 0.01-4 mm, preferably 0.1-1.0 mm, for example a rigid outer shell 2 of ABS, polycarbonate, lexan or alike may be used. Other materials are also conceivable.
  • a coated net, woven or nonwoven material 3 is provided, at least partially, in order to catch any object that may penetrate the rigid outer shell 2 and prevent that the object penetrates further through the inner portion of energy absorbing material 4 .
  • the coated net, woven or nonwoven material 3 compensates for the penetration protection loss at the portion having a thin rigid outer shell 2 .
  • the net or woven or nonwoven material 3 comprises unlaminated and/or unhardened fibres of, for example glass, carbon or aramid fibres, so that it keeps its soft, textile like properties.
  • the coating is preferably a silicone carbide, for example Twaron®.
  • the coated net, woven or nonwoven material is preferably arranged in a single-layer.
  • the form of the net 3 may be crossed or woven elongated fibres or threads of fibre or preferably elongated fibres or threads of fibre connected at its nodes by means of knots, glue or in any other way in order to lock the connection.
  • the size of the net 3 may, for example, be 1-10 mm ⁇ 1-10 mm, preferably 5 ⁇ 5 mm.
  • the threads or fibres are not required to cross each other perpendicularly but can show squares, rhombs, rectangles and so on.
  • the coated net, woven or nonwoven material 3 is loosely fitted except along its edges where it is fixedly attached either in the outer shell 2 or in the inner portion 4 . If the coated net, woven or nonwoven material 3 cover all the area of the helmet 1 the coated net, woven or nonwoven material 3 is preferably attached along the rim of the helmet 1 . Grooves (not shown) corresponding to the design of the net 3 may be provided on the outside surface of the inner portion of energy absorbing material 4 for the net 3 to rest in.
  • the coated net, woven or nonwoven material may instead be glued, moulded or in any other way attached to the outer surface of the inner portion of energy absorbing material 4 or to the inner surface of the outer shell 2 .
  • the net or woven or nonwoven material 3 may be positioned at the inside surface of the outer shell 2 and then for example expanded polystyrene is moulded into the helmet 1 whereby the net or woven or nonwoven material 3 is moulded in between the outer shell 2 and the EPS or partially inside the EPS.

Abstract

The present invention concerns a helmet with reduced weight but improves energy absorbing possibilities and protection against penetration comprising at least a rigi outer shell and an inner portion of energy absorbing material. At least a portion of the rigid outer shell is thin and has a thickness of 0.01-4 mm, preferably 0.1-1.0 mm in order to collapse at a crash and thus absorb energy and that a coated net, coated woven or coated nonwoven material is at least partially provided between the rigid outer shell and the inner portion of energy absorbing material in order to at least compensate for the penetration protection loss due to the thin rigid outer shell.

Description

  • The present invention concerns a helmet comprising at least a rigid outer shell and an inner portion of energy absorbing material. Especially, the helmet is suitable for alpine sports, such as down hill skiing.
    • BACKGROUND ART
  • When designing a helmet certain safety factors are taken into account, such as energy absorbing ability, penetration resistance and weight. The challenge when designing a safe and comfortable helmet is to make it as light weight as possible while achieving a high energy absorbing ability and a high level of penetration resistance.
  • Many helmet manufacturers reinforce the outer shell of their helmets with laminated glass or carbon fibres in order to improve the safety characteristics of the helmet while lowering the weight of the helmet. See for example EP 1 125 513 where a hardened and integrally assembled net or sheet member is used.
    • SUMMARY OF THE INVENTION
  • The main object of the present invention is to reduce the weight of a helmet. The weight of the helmet is an important factor when it comes to the severity of, for example, skull and neck injuries due to a crash. In order to achieve a lighter helmet at least an upper portion of the rigid outer shell may have a thickness of 0.01-4 mm, preferably 0.1-1.0 mm, especially if the material of the outer shell is for example ABS, polycarbonate, lexan or the like. Other materials are also conceivable.
  • An advantage of using a thinner rigid outer shell at least partially in the helmet is that it will absorb more shock energy due to partial collapsing of the thin rigid outer shell in a crash. Another advantage is that due to the partial collapsing of the outer shell bouncing of the helmet against the hit surface is reduced or even prevented.
  • Another object of the present invention is to improve the protection against penetration, which needs to be compensated for at the thin rigid outer shell. A solution is to provide a coated net, a coated woven or coated nonwoven material in the helmet, at least at the thin rigid outer shell, which is designed to withstand penetration of rocks, stones, branches and other objects that one may encounter in an action sport context and prevent that the object penetrates further through an inner portion of energy absorbing material of the helmet. Thus, if the present invention for penetration protection is combined with a thinner outer shell many advantages are achieved. The helmet may comprise more than one layer of outer shell and more than one layer of energy absorbing material.
  • Preferably the coated net, woven or nonwoven material extends over at least the portion with the thin rigid outer shell but may extend over the whole area of the helmet. The coated net, woven or nonwoven material may preferably be of unlaminated and/or unhardened fibres of, for example, glass, carbon or aramid, so that it keeps its soft, textile like properties. The coating may preferably be a silicon carbide or any material that will more or less lock the fibres so that the fibres will not easily separate when an object, like a stone, is on the way to penetrate the material layer.
  • The coating locks the fibres in the net, woven or nonwoven material so that the fibres will not separate enough to allow an object to penetrate the material layer on impact. The coated net, woven or nonwoven material is preferably arranged in a single-layer. The net may be connected at its nodes, for example, by means of knots, glue or in any other way.
  • The coated net, woven or nonwoven material may be loosely fitted in the helmet and attached at the rim of the helmet. Grooves corresponding to the design of the net may be provided on the outside surface of the inner portion of energy absorbing material for the net to rest in. According to another embodiment of the present invention the net or woven or nonwoven material may instead be glued, moulded by moulding the inner energy absorbing material directly into the rigid outer shell with the coated net, woven or nonwoven material in between, for example by means of in-moulding technique, or in any other way attached to the outer surface of the inner portion of energy absorbing material or to the inner surface of the outer shell.
    • SHORT DESCRIPTION OF THE DRAWINGS
  • The present invention will now be described by means of a preferred embodiment as an example in connection with the drawings, in which:
  • FIG. 1 shows a helmet according to the invention with a portion of the rigid outer shell removed, and
  • FIG. 2 shows a cross sectional view of a portion of the helmet according to the invention.
    •  DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
  • According to FIG. 1 a helmet 1 of the present invention is shown where a portion of a rigid outer shell 2 is taken away so that a coated net, woven or nonwoven material 3 is visible. The helmet 1 comprises at least a rigid outer shell 2 and an inner portion of energy absorbing material 4. The outer shell 2 may comprise more than one layer, for example an outer polycarbonate layer and an inner glass fibre reinforced resin layer. Also the inner portion of energy absorbing material 4 may comprise more than one layer, for example a layer of honeycomb material, a layer of expanded polystyrene and a layer of soft foamed plastic.
  • At least a portion, preferably the upper portion, of the rigid outer shell is made up with a thin material layer having a thickness of 0.01-4 mm, preferably 0.1-1.0 mm, for example a rigid outer shell 2 of ABS, polycarbonate, lexan or alike may be used. Other materials are also conceivable.
  • Between the outer shell 2 and the inner portion of energy absorbing material 4 a coated net, woven or nonwoven material 3 is provided, at least partially, in order to catch any object that may penetrate the rigid outer shell 2 and prevent that the object penetrates further through the inner portion of energy absorbing material 4. The coated net, woven or nonwoven material 3 compensates for the penetration protection loss at the portion having a thin rigid outer shell 2.
  • The net or woven or nonwoven material 3 comprises unlaminated and/or unhardened fibres of, for example glass, carbon or aramid fibres, so that it keeps its soft, textile like properties. The coating is preferably a silicone carbide, for example Twaron®. The coated net, woven or nonwoven material is preferably arranged in a single-layer.
  • The form of the net 3 may be crossed or woven elongated fibres or threads of fibre or preferably elongated fibres or threads of fibre connected at its nodes by means of knots, glue or in any other way in order to lock the connection. The size of the net 3 may, for example, be 1-10 mm×1-10 mm, preferably 5×5 mm. The threads or fibres are not required to cross each other perpendicularly but can show squares, rhombs, rectangles and so on.
  • There are different conceivable ways of providing the coated net, woven or nonwoven material 3 in the helmet 1. According to a first embodiment the coated net, woven or nonwoven material 3 is loosely fitted except along its edges where it is fixedly attached either in the outer shell 2 or in the inner portion 4. If the coated net, woven or nonwoven material 3 cover all the area of the helmet 1 the coated net, woven or nonwoven material 3 is preferably attached along the rim of the helmet 1. Grooves (not shown) corresponding to the design of the net 3 may be provided on the outside surface of the inner portion of energy absorbing material 4 for the net 3 to rest in.
  • According to another embodiment of the present invention the coated net, woven or nonwoven material may instead be glued, moulded or in any other way attached to the outer surface of the inner portion of energy absorbing material 4 or to the inner surface of the outer shell 2. For example, the net or woven or nonwoven material 3 may be positioned at the inside surface of the outer shell 2 and then for example expanded polystyrene is moulded into the helmet 1 whereby the net or woven or nonwoven material 3 is moulded in between the outer shell 2 and the EPS or partially inside the EPS.

Claims (17)

1. A helmet comprising:
at least a rigid outer shell; and
an inner portion of energy absorbing material, wherein a portion of the rigid outer shell has a thickness of 0.01-4 mm in order to collapse at a crash and absorb energy and wherein a coated material is at least partially provided between the rigid outer shell and the inner portion of an energy absorbing material.
2. A helmet according to claim 1, wherein the coated net material extends across the full area between the rigid outer shell and the inner portion of the energy absorbing material.
3. A helmet according to claim 1, wherein the coated material comprises unlaminated and/or unhardened aramid fibres.
4. A helmet according to claim 3, wherein the coated material is coated with a silicon carbide.
5-8. (canceled)
9. A helmet according to claim 1, wherein the coated material compensates for the penetration protection loss due to the rigid outer shell, and wherein the coated material is selected from the group consisting of a coated woven material, a coated nonwoven material and a coated net.
10. A helmet according to claim 9, wherein the coated material comprises unlaminated and/or unhardened aramid fibres.
11. A helmet according to claim 10, wherein the coated material is coated with a silicon carbide.
12. A helmet according to claim 9, wherein the coated net is connected at its nodes, and wherein the coated net is provided in a corresponding pattern of grooves at the outside surface of the inner portion of the energy absorbing material.
13. A helmet according to claim 9, wherein the coated woven material, the coated nonwoven material or the coated net is attached to the outside surface of the inner portion of the energy absorbing material.
14. A helmet according to claim 9, wherein the coated woven material, the coated nonwoven material or the coated net is molded between the inside surface of the rigid outer shell and the outside surface of the inner portion of the energy absorbing material.
15. A helmet according to claim 2, wherein the coated material compensates for the penetration protection loss due to the rigid outer shell, and wherein the coated material is selected from the group consisting of a coated woven material, a coated nonwoven material and a coated net.
16. A helmet according to claim 15, wherein the coated material comprises unlaminated and/or unhardened aramid fibres.
17. A helmet according to claim 16, wherein the coated material is coated with a silicon carbide.
18. A helmet according to claim 15, wherein the coated net is connected at its nodes, and wherein the coated net is provided in a corresponding pattern of grooves at the outside surface of the inner portion of the energy absorbing material.
19. A helmet according to claim 15, wherein the coated woven material, the coated nonwoven material or the coated net is attached to the outside surface of the inner portion of the energy absorbing material.
20. A helmet according to claim 15, wherein the coated woven material, the coated nonwoven material or the coated net is molded between the inside surface of the rigid outer shell and the outside surface of the inner portion of the energy absorbing material.
US11/662,462 2004-09-07 2005-09-06 Helmet Abandoned US20120036619A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/662,462 US20120036619A1 (en) 2004-09-07 2005-09-06 Helmet

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US60730204P 2004-09-07 2004-09-07
SE0402137-4 2004-09-07
SE0402137A SE0402137D0 (en) 2004-09-07 2004-09-07 Helmet
SE0402497-2 2004-10-14
SE0402497A SE0402497D0 (en) 2004-10-14 2004-10-14 Helmet
PCT/SE2005/001283 WO2006041355A1 (en) 2004-09-07 2005-09-06 Helmet
US11/662,462 US20120036619A1 (en) 2004-09-07 2005-09-06 Helmet

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US20120036619A1 true US20120036619A1 (en) 2012-02-16

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US11/662,462 Abandoned US20120036619A1 (en) 2004-09-07 2005-09-06 Helmet

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US20110047680A1 (en) * 2009-08-31 2011-03-03 Brian Hoying Batting Helmet Having Localized Impact Protection
US20130283504A1 (en) * 2012-04-26 2013-10-31 Philip R. Harris Helmet pads
US20130298316A1 (en) * 2012-05-14 2013-11-14 William J. Jacob Energy dissipating helmet utilizing stress-induced active material activation
WO2014081363A1 (en) * 2012-11-23 2014-05-30 Poc Sweden Ab Protection device for helmet
DE102013002344A1 (en) * 2013-02-09 2014-08-14 Dräger Safety AG & Co. KGaA Protection device e.g. fire helmet used for protecting head of person, has outer shell that is aligned with inner wall to which object or head of person is aligned for partially covering object or head of person
US20150047110A1 (en) * 2013-08-13 2015-02-19 Smith Optics, Inc. Helmet with shock absorbing inserts
USD752294S1 (en) 2013-08-13 2016-03-22 Smith Optics, Inc. Helmet
USD752814S1 (en) 2013-08-13 2016-03-29 Smith Optics, Inc. Helmet
USD773120S1 (en) 2014-07-25 2016-11-29 Smith Optics, Inc. Helmet
USD795500S1 (en) 2013-08-13 2017-08-22 Smith Optics, Inc. Helmet
US9770642B2 (en) 2010-08-11 2017-09-26 G-Form, LLC Flexible cushioning pads, items incorporating such pads, and methods of making and using
USD817553S1 (en) 2016-10-31 2018-05-08 Smith Optics, Inc. Helmet
US10010127B1 (en) * 2017-06-29 2018-07-03 Bell Sports, Inc. Protective helmet with multi-density impact liners and method for same
USD822905S1 (en) 2016-10-31 2018-07-10 Smith Optics, Inc. Helmet
US20180338558A1 (en) * 2017-05-24 2018-11-29 David Christopher Reynolds Helmet impact absorption system
USD838922S1 (en) 2011-05-02 2019-01-22 Riddell, Inc. Football helmet
USD844255S1 (en) 2014-02-12 2019-03-26 Riddell, Inc. Football helmet
US10271605B2 (en) 2007-04-16 2019-04-30 Riddell, Inc. Protective sports 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
USD874069S1 (en) 2018-06-22 2020-01-28 Nick M. Dunton Pad kit for a helmet
US10582737B2 (en) 2013-02-12 2020-03-10 Riddell, Inc. Football helmet with impact attenuation system
US10721987B2 (en) 2014-10-28 2020-07-28 Bell Sports, Inc. Protective helmet
US10874162B2 (en) 2011-09-09 2020-12-29 Riddell, Inc. Protective sports helmet
US10948898B1 (en) 2013-01-18 2021-03-16 Bell Sports, Inc. System and method for custom forming a protective helmet for a customer's head
USD927084S1 (en) 2018-11-22 2021-08-03 Riddell, Inc. Pad member of an internal padding assembly of a protective sports helmet
US11167198B2 (en) 2018-11-21 2021-11-09 Riddell, Inc. Football helmet with components additively manufactured to manage impact forces
US11213736B2 (en) 2016-07-20 2022-01-04 Riddell, Inc. System and methods for designing and manufacturing a bespoke protective sports helmet
US11317672B2 (en) 2018-06-22 2022-05-03 Nick M. Dunton Energy absorption system for a helmet
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

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US10271605B2 (en) 2007-04-16 2019-04-30 Riddell, Inc. Protective sports helmet
US9107466B2 (en) * 2009-08-31 2015-08-18 Rawlings Sporting Goods Company, Inc. Batting helmet having localized impact protection
US20110047680A1 (en) * 2009-08-31 2011-03-03 Brian Hoying Batting Helmet Having Localized Impact Protection
US9908028B2 (en) 2010-08-11 2018-03-06 G-Form, LLC Flexible cushioning pads, items incorporating such pads, and methods of making and using
US9782662B2 (en) 2010-08-11 2017-10-10 G-Form, LLC Flexible cushioning pads, items incorporating such pads, and methods of making and using
US9770642B2 (en) 2010-08-11 2017-09-26 G-Form, LLC Flexible cushioning pads, items incorporating such pads, and methods of making and using
USD856600S1 (en) 2011-05-02 2019-08-13 Riddell, Inc. Football helmet
USD838922S1 (en) 2011-05-02 2019-01-22 Riddell, Inc. Football helmet
USD856601S1 (en) 2011-05-02 2019-08-13 Riddell, Inc. Football helmet
US10874162B2 (en) 2011-09-09 2020-12-29 Riddell, Inc. Protective sports helmet
US11503872B2 (en) 2011-09-09 2022-11-22 Riddell, Inc. Protective sports helmet
US11311067B2 (en) 2011-09-09 2022-04-26 Riddell, Inc. Protective sports helmet
US8826468B2 (en) * 2012-04-26 2014-09-09 Philip R. Harris Helmet pads
US20130283504A1 (en) * 2012-04-26 2013-10-31 Philip R. Harris Helmet pads
US11464271B2 (en) * 2012-05-14 2022-10-11 William A. Jacob Energy dissipating helmet
US20130298316A1 (en) * 2012-05-14 2013-11-14 William J. Jacob Energy dissipating helmet utilizing stress-induced active material activation
WO2014081363A1 (en) * 2012-11-23 2014-05-30 Poc Sweden Ab Protection device for helmet
US10948898B1 (en) 2013-01-18 2021-03-16 Bell Sports, Inc. System and method for custom forming a protective helmet for a customer's head
US11889883B2 (en) 2013-01-18 2024-02-06 Bell Sports, Inc. System and method for forming a protective helmet for a customer's head
US11419383B2 (en) 2013-01-18 2022-08-23 Riddell, Inc. System and method for custom forming a protective helmet for a customer's head
DE102013002344A1 (en) * 2013-02-09 2014-08-14 Dräger Safety AG & Co. KGaA Protection device e.g. fire helmet used for protecting head of person, has outer shell that is aligned with inner wall to which object or head of person is aligned for partially covering object or head of person
US11910859B2 (en) 2013-02-12 2024-02-27 Riddell, Inc. Football helmet with impact attenuation system
US10582737B2 (en) 2013-02-12 2020-03-10 Riddell, Inc. Football helmet with impact attenuation system
US11864615B2 (en) 2013-08-13 2024-01-09 Smith Sport Optics, Inc. Helmet with shock absorbing inserts
USD795500S1 (en) 2013-08-13 2017-08-22 Smith Optics, Inc. Helmet
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US11844390B2 (en) 2013-08-13 2023-12-19 Smith Sport Optics, Inc. Helmet with shock absorbing inserts
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US10736373B2 (en) * 2013-08-13 2020-08-11 Smith Optics, Inc. Helmet with shock absorbing inserts
USD752294S1 (en) 2013-08-13 2016-03-22 Smith Optics, Inc. Helmet
US20150047110A1 (en) * 2013-08-13 2015-02-19 Smith Optics, Inc. Helmet with shock absorbing inserts
US10362829B2 (en) 2013-12-06 2019-07-30 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
US11871809B2 (en) 2013-12-06 2024-01-16 Bell Sports, Inc. Multi-layer helmet and method for making the same
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