EP0047712A2 - Système destiné à un casque pour amortir les chocs - Google Patents

Système destiné à un casque pour amortir les chocs Download PDF

Info

Publication number
EP0047712A2
EP0047712A2 EP81630050A EP81630050A EP0047712A2 EP 0047712 A2 EP0047712 A2 EP 0047712A2 EP 81630050 A EP81630050 A EP 81630050A EP 81630050 A EP81630050 A EP 81630050A EP 0047712 A2 EP0047712 A2 EP 0047712A2
Authority
EP
European Patent Office
Prior art keywords
tubes
shock attenuation
liner
attenuation system
set forth
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
Application number
EP81630050A
Other languages
German (de)
English (en)
Other versions
EP0047712A3 (en
EP0047712B1 (fr
Inventor
Hal D. Mitchell
David C. Rust
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.)
Scott Technologies Inc
Original Assignee
Figgie International Inc
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 Figgie International Inc filed Critical Figgie International Inc
Priority to AT81630050T priority Critical patent/ATE10059T1/de
Publication of EP0047712A2 publication Critical patent/EP0047712A2/fr
Publication of EP0047712A3 publication Critical patent/EP0047712A3/en
Application granted granted Critical
Publication of EP0047712B1 publication Critical patent/EP0047712B1/fr
Expired 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
    • A42B3/10—Linings
    • A42B3/12—Cushioning devices
    • A42B3/124—Cushioning devices with at least one corrugated or ribbed layer

Definitions

  • This invention relates to headgear, and more particularly to a shock attenuation system for protective headgear.
  • This invention involves an improvement in shock attenuation systems for protective headgear of the type, such as shown for example in U.S. patents 3 292 180 , 3 462 763, 3 600 714, 3 609 764, 3 668 704 and 3 887 076, comprising a deformable liner secured to the internal surface of an outer protective shell of the headgear, the liner deforming under an impact load applied to the shell for attenuating the shock upon the wearer.
  • the liners of prior systems initially provide adequate shock attenuation they lose a substantial part of their shock attenuation properties with each impact, with the result that after a relatively small number of impact loadings of relatively high magnitude, they no longer provide adequate shock attenuation.
  • the loss of shock attenuation properties is not, however, accompanied by any visible changes in the liners of prior systems, and a user cannot determine by visual inspection whether a particular piece of headgear which has been previously used still provides adequate protection.
  • an improved shock attenuation system of the above-described type which provides a higher level of shock attenuation than prior systems.
  • the provision of such a system which continues to provide an adequate level of shock attenuation after being subjected to numerous impact loadings.
  • the provision of such a sys- tern which, if it were to become defective in use, would be visually detectable as such;
  • the provision of such a system which is detachably secured to the outer protective shell of the headgear to enable removal of a defective system and installation of a replacement therefor.
  • the provision of such a system which provides improved air ventilation in the headgear the provision of such a system which is relatively compact and lightweight, and the provision of such a system which is relatively simple and economical to manufacture.
  • the shock attenuation system of this invention comprises a liner adapted to be secured to the internal surface of the outer shell of protective headgear, the liner comprising a series of tubes of elastomeric material adapted to extend with their axes generally parallel to the-internal surface of the shell and generally parallel to one another.
  • Each tube is open at an end thereof and is elastically deformable under loads applied against the side of the tube, whereby, with the headgear worn by a wearer and upon application of an impact load to the headgear, the tubes in the area of impact deform elastically under the applied load and attenuate the shock upon the wearer from the applied load.
  • headgear such as a football helmet
  • an outer protective shell 3 of a suitable relatively lightweight plastic material such as acrylon- itrile-butadiene-stymène (ABS) resin or polypropylene having a relatively high impact resistance
  • a shock attenuation system 5 of this invention comprising a liner 7 at the internal surface of the shell 3.
  • the liner preferably has, as shown in Fig. 1, a lower section 9 at the lower edge margin of the shell and a separate upper section 11 above the lower section extending toward but stopping short of the crown of the shell.
  • a suspension harness indicated at 13 in Fig. 2 is provided in the headgear 1 at its crown for protecting the top of the wearer's head.
  • the liner 7 comprises a series of elastically deformable tubes 15 of generally circular section extending up within the shell with their axes generally parallel to the internal surface of the shell, and a layer 17 of cushioning material at the interior periphery of the series of tubes.
  • the layer 17 of cushioning maternal comprises a plurality of pads 19 of a suitable closed-cell elastomeric foam such as a foamed vinyl resin at spaced intervals along a carrier sheet 21 of suitable material detachably secured to the tubes 15 by conventional fasteners 23, such as snaps or hook and pile fasteners.
  • the inner surface of the layer 17 of cushioning material is engageable with the head for providing a snug, comfortable fit of the headgear on the wearer's head.
  • the thickness of the layer 17 may be varied within a range (e.g.0.635to 1.58 cm ) to enable use of one size of shell 3 for a range of head sizes.
  • the tubes 15 are secured together in side-by-side relation with adjacent tubes joined by a layer of suitable adhesive or integrally formed as by extrusion, and they are detachably secured to the shell 3 by conventional fastening means 25 such as rivets, "t"nuts and screws, or snaps.
  • the tubes are of an elastomeric material, such as polybutylene, polyurethane, polyethylene, a polyarylate resin such as that sold under the trade name "Ardel” by Union Carbide Corp., of New York, New York , or a synthetic rubber such as that sold under the trade name "Hytrel " by E.I. Du Pont De & Nemours Co., Inc.
  • the system 5 attenuates the shock upon the wearer from an impact load applied to the headgear by distributing the loading over an increased area of the head and by increasing the period of time during which loading is applied to the head, thereby decreasing the shock (which is a time derivative of the loading).
  • the tubes 15 in the area of impact deform to an elliptical section with their major axes generally parallel to the internal surface of the shell 3 thereby causing the adjacent tubes to deform to an elliptical section with their major axes perpendicular to the shell and to apply force against the wearer's head, thus increasing the area of the head over which loading is applied.
  • Time being required to deform the tubes upon application of the impact load and time being required for the tubes to return to their original circular section after the impact laod has been applied the overall period of time during which loading is applied to tle head is increased.
  • the system of this invention provides a level of shock attenuation on subsequent impact loadings which is approximately equal to that for the initial impact loading. It is only upon the cracking or fracture of a tube 15 of the liner 7, which may occur after a large number of impact loadings, that there is a substantial decrease in the level of shock attenuation of the system.
  • the series of tubes 15 may be easily and quickly removed from the shell 3 and inspected for cracks and fractures, and the headgear 1 may be reconditioned by replacing a series of tubes 15 found to be defective.
  • Helmet A had a liner embodying the shock attenu - ation system 5 of this invention, comprising tubes of polyurethane having a 0.95 cm inner diameter and a 1.27 cm outer diameter, and a layer of 0. 95 cm thick vinyl resin foam.
  • Helmet B was of the type such as that shown for example in U.S. patent 3 462 763 having an air suspension shock attenuation system.
  • Helmet C was of the type such as that shown for example in U.-S. patent 3 609 764 having a shock attenuation system comprising a liner of dual composition vinyl resin foam.
  • Helmet D was of the type such as that shown for example in U.S.
  • patent 3 600 714 having a hydraulic suspension shock attenuation system.
  • the Severity Index of the initial drop for the helmets B-D was greater than that for the helmet A, and that the Severity Index of each of the helmets A-D increased on succeeding drops with the increase for helmets B-D on succeeding drops being greater than that for helmet A.
  • Table 1 is a tabulation of the number of times, up to ten, each helmet was dropped until the Severity Index first exceeded 1500.
  • FIG. 5 A second embodiment 27 of the shock attenuation system of this invention is shown in Fig. 5. It is similar to the system 5 except that its liner 29 comprises a series of tubes 15 laced together by lacing 31 extending through holes in the sides of the tubes.
  • a third embodiment 33 of the shock attenuation system of this invention is shown, also similar to the system 5 except that its liner 35 comprises a series of tubes 15 joined to a common carrier sheet 37, which may be of the same elastomeric material as the tubes, with an elongate strip 39 of a suitable elastomeric foam extending around the interior periphery of the series of tubes.
  • adjacent tubes 15 may be spaced apart a predetermined distance on the carrier sheet and the fastening means 19 may have a projection 41 extending between adjacent tubes.
  • a fourth embodiment 43 of the shock attenuation system is shown, similar to the system 5 except that its liner 45 further comprises first and second strips 47, 49 of suitable material such as a fabric secured together, as by stitching, at spaced intervals to form means defining a plurality of pockets 51 each receiving a tube 15.
  • first and second strips 47, 49 of suitable material such as a fabric secured together, as by stitching, at spaced intervals to form means defining a plurality of pockets 51 each receiving a tube 15.
  • adjacent tubes 15 of this system may be spaced apart a predetermined distance and the layer 17 of cushioning material may compnse an elongate strip of elastomeric foam extending around the interior periphery of the series of tubes.
  • lacing 53 may be used to secure the layer 17 to the first and second strips 47, 49.
  • shock attenuation systems of this invention have been shown and described as being incorporated in football helmets, it is to be understood that they could be incorporated into other protective headgear, such as aviation helmets and military helmets including those having a bullet-proof outer protective shell.
  • the systems of this invention would provide improved ventilation to enable the helmet to be worn for extended periods of time, and would attenuate noise such as that from aircraft engines or gunfire.

Landscapes

  • Helmets And Other Head Coverings (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Particle Accelerators (AREA)
  • Vibration Dampers (AREA)
  • Window Of Vehicle (AREA)
  • Headphones And Earphones (AREA)
  • Gyroscopes (AREA)
EP81630050A 1980-09-08 1981-08-26 Système destiné à un casque pour amortir les chocs Expired EP0047712B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81630050T ATE10059T1 (de) 1980-09-08 1981-08-26 Stossdaempfungssystem fuer einen kopfschutz.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18520880A 1980-09-08 1980-09-08
US185208 1980-09-08

Publications (3)

Publication Number Publication Date
EP0047712A2 true EP0047712A2 (fr) 1982-03-17
EP0047712A3 EP0047712A3 (en) 1982-03-24
EP0047712B1 EP0047712B1 (fr) 1984-10-31

Family

ID=22680049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81630050A Expired EP0047712B1 (fr) 1980-09-08 1981-08-26 Système destiné à un casque pour amortir les chocs

Country Status (7)

Country Link
EP (1) EP0047712B1 (fr)
JP (1) JPS5777307A (fr)
AT (1) ATE10059T1 (fr)
CA (1) CA1171202A (fr)
DE (2) DE47712T1 (fr)
IL (1) IL63556A (fr)
MX (1) MX158259A (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4472472A (en) * 1983-04-28 1984-09-18 Schultz Robert J Protective device
EP0124586A4 (fr) * 1982-10-26 1986-04-15 Figgie Internat Inc Systeme amortisseur de chocs.
US4782536A (en) * 1987-04-20 1988-11-08 Stricklin Bobby R Emergency safety helmet
WO1999049745A1 (fr) * 1998-03-19 1999-10-07 Niels Dahl Casque de protection
WO1999056572A1 (fr) * 1998-05-04 1999-11-11 Katz Jeffrey P Casque de protection
WO2005060778A3 (fr) * 2003-12-20 2005-09-15 Lloyd Scotland Ltd Dispositif de protection corporelle
WO2007052015A3 (fr) * 2005-10-31 2007-09-07 Lloyd Scotland Ltd Dispositif de protection corporelle
EP2100527A1 (fr) * 2008-03-10 2009-09-16 Keng-Hsien Lin Dispositif d'absorption souple des chocs
CN100544623C (zh) * 2003-12-20 2009-09-30 劳埃德（苏格兰）有限公司 身体保护装置
CN101467799B (zh) * 2007-12-25 2011-07-13 林庚贤 避震装置
US8621672B2 (en) 2011-05-06 2014-01-07 John CHUBACK Head and neck protection apparatus
SE1751565A1 (en) * 2017-12-18 2019-06-19 Svein Kleiven Protective device
IT202100022058A1 (it) * 2021-08-18 2023-02-18 Alpinestars Res Spa Casco protettivo
IT202100022061A1 (it) * 2021-08-18 2023-02-18 Alpinestars Res Spa Casco protettivo
WO2024201295A1 (fr) * 2023-03-28 2024-10-03 3M Innovative Properties Company Casque avec protection latérale

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4845786A (en) * 1987-06-24 1989-07-11 Chiarella Michele A Lightweight molded protective helmet
JP2013057354A (ja) * 2011-09-08 2013-03-28 Tokushu Iryo:Kk 衝撃吸収構造体とその製造方法
WO2013123113A1 (fr) 2012-02-16 2013-08-22 Bonin Walter Dispositif de protection personnelle contre les chocs
JP2023130001A (ja) * 2022-03-07 2023-09-20 オーシャンビートル有限会社 衝撃吸収構造

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1652776A (en) * 1927-01-11 1927-12-13 Emanuel N Galanis Miner's cap
US2585937A (en) * 1949-08-01 1952-02-19 Willson Products Inc Safety hat
US3186004A (en) * 1962-06-07 1965-06-01 Richard E Carlini Protective helmet
US3600714A (en) * 1969-03-19 1971-08-24 Hop N Gator Inc Hydraulic helmet
US3829900A (en) * 1973-08-30 1974-08-20 Mine Safety Appliances Co Safety hat energy absorbing liner
US3877076A (en) * 1974-05-08 1975-04-15 Mine Safety Appliances Co Safety hat energy absorbing liner
GB1503483A (en) * 1975-02-10 1978-03-08 Bothwell P Shock absorbing means
DE2659324C3 (de) * 1976-12-29 1981-01-15 Kalman 3141 Garlstorf Gyoery Schutzhelm für Motorradfahrer
US4133055A (en) * 1977-08-03 1979-01-09 Energy Systems Corporation Protective helmet with thermal liner
DE7829829U1 (de) * 1978-10-06 1979-01-18 Richter, Manfred, 6700 Ludwigshafen Helm
US4223409A (en) * 1979-04-30 1980-09-23 Lee Pei Hwang Helmet provided with shockproof and ventilative device
DE2938355A1 (de) * 1979-09-22 1981-04-09 A + R Fahrzeug- und Sicherheitstechnik GmbH, 7300 Esslingen Schussfester schutzhelm

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124586A4 (fr) * 1982-10-26 1986-04-15 Figgie Internat Inc Systeme amortisseur de chocs.
US4472472A (en) * 1983-04-28 1984-09-18 Schultz Robert J Protective device
US4782536A (en) * 1987-04-20 1988-11-08 Stricklin Bobby R Emergency safety helmet
WO1999049745A1 (fr) * 1998-03-19 1999-10-07 Niels Dahl Casque de protection
WO1999056572A1 (fr) * 1998-05-04 1999-11-11 Katz Jeffrey P Casque de protection
CN100544623C (zh) * 2003-12-20 2009-09-30 劳埃德（苏格兰）有限公司 身体保护装置
WO2005060778A3 (fr) * 2003-12-20 2005-09-15 Lloyd Scotland Ltd Dispositif de protection corporelle
RU2390288C2 (ru) * 2003-12-20 2010-05-27 Ллойд (Скотлэнд) Лимитед Защищающее тело устройство
WO2007052015A3 (fr) * 2005-10-31 2007-09-07 Lloyd Scotland Ltd Dispositif de protection corporelle
CN101299938B (zh) * 2005-10-31 2011-07-20 劳埃德（苏格兰）有限公司 身体保护设备
CN101467799B (zh) * 2007-12-25 2011-07-13 林庚贤 避震装置
EP2100527A1 (fr) * 2008-03-10 2009-09-16 Keng-Hsien Lin Dispositif d'absorption souple des chocs
US8621672B2 (en) 2011-05-06 2014-01-07 John CHUBACK Head and neck protection apparatus
SE1751565A1 (en) * 2017-12-18 2019-06-19 Svein Kleiven Protective device
IT202100022058A1 (it) * 2021-08-18 2023-02-18 Alpinestars Res Spa Casco protettivo
IT202100022061A1 (it) * 2021-08-18 2023-02-18 Alpinestars Res Spa Casco protettivo
WO2023021383A1 (fr) * 2021-08-18 2023-02-23 Alpinestars Research S.p.A. Casque de protection
WO2023021385A1 (fr) * 2021-08-18 2023-02-23 Alpinestars Research S.p.A. Casque de protection
WO2024201295A1 (fr) * 2023-03-28 2024-10-03 3M Innovative Properties Company Casque avec protection latérale

Also Published As

Publication number Publication date
DE47712T1 (de) 1983-04-28
ATE10059T1 (de) 1984-11-15
DE3166977D1 (en) 1984-12-06
EP0047712A3 (en) 1982-03-24
JPS5777307A (en) 1982-05-14
EP0047712B1 (fr) 1984-10-31
MX158259A (es) 1989-01-18
IL63556A0 (en) 1981-11-30
CA1171202A (fr) 1984-07-24
IL63556A (en) 1984-03-30

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