US3860966A - Safety helmet - Google Patents

Safety helmet Download PDF

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Publication number
US3860966A
US3860966A US342416A US34241673A US3860966A US 3860966 A US3860966 A US 3860966A US 342416 A US342416 A US 342416A US 34241673 A US34241673 A US 34241673A US 3860966 A US3860966 A US 3860966A
Authority
US
United States
Prior art keywords
section
helmet
wearer
stop means
safety helmet
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.)
Expired - Lifetime
Application number
US342416A
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English (en)
Inventor
Clarence Eugene Brown
William A Stephens
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US342416A priority Critical patent/US3860966A/en
Priority to CA175,589A priority patent/CA992254A/en
Priority to AU57910/73A priority patent/AU5791073A/en
Priority to GB3319873A priority patent/GB1389625A/en
Priority to IT52045/73A priority patent/IT990367B/it
Priority to FR7331999A priority patent/FR2222033A1/fr
Priority to DE19732344821 priority patent/DE2344821A1/de
Priority to SE7313379A priority patent/SE403558B/xx
Priority to JP48115377A priority patent/JPS49120747A/ja
Application granted granted Critical
Publication of US3860966A publication Critical patent/US3860966A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A42B3/32—Collapsible helmets; Helmets made of separable parts ; Helmets with movable parts, e.g. adjustable
    • 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
    • A42B3/28—Ventilating arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S2/00—Apparel
    • Y10S2/903—Fiberglass

Definitions

  • a safety helmet includes a lower rear semi-spherical section adapted to slide over an upper semi-spherical section in response to a high impact accident causing flexure of the wearers neck.
  • the first section is pivoted to the second section about an axis which is located as nearly as possible to the normal pivot of the cervical skull axis.
  • Position stops are provided to limit the downward and upward pivotal movement of the lower section.
  • the lower edge of the lower section is broadly flanged and well padded to diversify and cushion impact with the neck of the wearer and is designed to engage the wearers neck at a point below the fragile upper cervical area and, in particular, below the third vertebra.
  • Safety helmets have come into wide use in response to the danger of serious injury to motorcycle drivers and drivers in automotive races.
  • such safety helmets have become substantially standardized and consist of substantially semi-spherical shells of a suitable, rigid and durable material, such as a high impact plastic or fiberglass impregnated with resin.
  • the shells are provided with suitable padding about their interiors to engage on and about the head.
  • U.S. Pat. No. 3,591,863 it is proposed to provide an elongate, vertically extending neck pad engagable with the back of the wearers neck and shaped to conform to the wearers neck when the wearers head is tipped and his neck is flexed backwardly a predetermined extent to provide support to the cervical portion of the wearers spine and occipital portion of the wearers skull.
  • the mounting means for the pad includes an arm depending downwardly and forwardly from the lower rear edge portion of the helmet which normally engages the rear side of the pad and a downwardly depending flexible strap for supporting the pad.
  • an object ofthe present invention to provide'an improved safety helmet which reduces the possibility of injury to the neck and spine of the wearer during accidents which cause hyperextension of the wearers neck.
  • the invention contemplates the provision of a safety helmet having a pair of semi-spherical sections.
  • a first semi-spherical section is provided to pro tect the upper portion of the wearers head, and a second semi-spherical section, which is pivoted to the first section, is intended to protect the lower rear portion of the wearer's head.
  • the second section is slidably engaged with a semi-spherical surface of the first section, and pivots upwardly in response to the forces generated during hyperextension of the wearers neck during a high impact accident.
  • the pivot axis for the second section is located as nearly as possible to the normal pivot of the cervical skull axis of the wearer.
  • a spring is provided to bias the lower section downwardly to a position protecting the lower rear portion of the wearers head, and a pair of stops are provided to limit upward and downward movement of the second section.
  • the upward movement is limited so that flexure of the wearers neck will be less than 50.
  • the lower edge of the second section is broadly flanged and well padded to broaden and cushion the impact against the wearers neck. Moreover, the lower edge is so positioned that impact will be well below the fragile upper cervical area and will, in particular, engage the wearers neck below the third vertebra.
  • FIG. 1 is a perspective view of a safety helmet of the present invention
  • FIG. 2 is a vertical section view of a helmet of the present invention positioned on the head of a wearer whose skull and spinal column are shown in phantom line;
  • FIG. 3 is a partial section view taken along the line 3 3 of FIG. 2;
  • FIG. 4 is a partial section view taken along the line 4 4 of FIG. 2.
  • a helmet of the present invention includes a first helmet section 12 to which is pivoted a second helmet section 14.
  • Helmet section 12 is adapted to cover the top and sides of the wearers head and includes a semi-spherical shell portion 16 made of a durable high impact plastic, such as resin impregnated fiberglass or polycarbonate.
  • Section 12 includes a raised portion 18 facilitating the flow of ventilating air into the helmet as will be presently described.
  • raised portion 18 has a front wall 20 provided with a plurality of openings 22 for admitting ventilating air into the helmet.
  • a control valve 24 is provided in the form of a plate having a plurality of corresponding openings which are slidable into alignment with openings 22 to open the openings or out of alignment with openings 22 to close the openings.
  • a handle projects upwardly through a slot 28 provided in the top wall of raised section 18.
  • the inner surface of helmet section 12 is lined with a padding 30 adapted to tit and protect the wearers head.
  • This padding is made from a foam plastic material or a foam rubber and serves to cushion impact.
  • Padding 30 includes a plurality of ribs 32 within raised helmet section 18, ribs 32 being separated by grooves 34. This ribbed design secures the helmet on the wearer's head much in the fashion of tire treads securing a car to the road.
  • helmet section 12 An important feature of helmet section 12 is the provision of a shoulder 36 extending upwardly from semispherical section 16 at the rear of raised section 18. As will be presently explained, shoulder 36 will serve as an abutment stop to limit upward movement of helmet section 14. In order to limit downward movement of helmet section 14, a second stop is provided in the form of a plurality of spaced, raised protuberances 38 adjacent the rear edge of helmet section 12.
  • Helmet section 14 is adapted to cover the rear portion of the wearers head.
  • This section is also formed of a high impact plastic, such as resin impregnated fiberglass or polycarbonate.
  • This section also includes a semi-spherical portion 40.
  • a lip 42 extends downwardly from the upper edge of section 40 and serves to engage with stops 38 when helmet section 14 is in its lowered position and engage against shoulder 36 when helmet section 14 is in its upper position, as will be presently explained.
  • Helmet section 14 includes a broad lower flange 44 which serves to broaden the impact of the lower edge of the helmet against the neck of the wearer in a high impact accident which causes hyperextension of the wearers neck. Helmet section 14 is also lined with padding 46 made of the same foam cushioning material as is used to line helmet section 12. It is to be noted that padding 46 includes a lower thickened lip portion 48 beneath broad flange 44, serving to provide greater protection to the wearers neck upon impact therewith.
  • Lower helmet section 14 is pivoted on a pair of pivots 50, only one of which is seen in FIGS. 1 and 2, provided on both sides of the helmet.
  • Pivots 50 define an axis which coincides with a central axis of the semispherical surfaces of sections 12 and 14 and is positioned as nearly as possible to the normal pivot of the cervical skull axis of the wearer. This axis extends more or less through the opening of one ear to the opening of the other ear of most individuals.
  • helmet portion 40 of section 14 and padding 46 closely conforms to the semi-spherical shape of helmet portion 16.
  • lower helmet section 14 is adapted to slide along the outer surface of semi-spherical portion 16 of upper helmet section 12.
  • padding 46 is provided with a plurality of grooves 52 which receive the stop projections 38 extending upwardly from the lower edge of upper helmet section 12.
  • a torsion spring 54 extends around each pivot 50 and includes a first arm 56 engaged against a stop 58 provided on the inner surface of upper helmet section 12 and a second arm 60 having an end engaged against a stop 62 provided on lower helmet section 14.
  • Spring 54 normally biases section 14 to its lower position with lip 42 engaged against stop protuberances 38.
  • the broad lower flange 44 of lower helmet section 14 is so positioned that it will impact against the neck of the wearer at a point well below the fragile upper cervical area in a lower stronger cervical area. In particular, it has been found that danger of serious, and fatal, injuries is greatly reduced if the impact is provided below the third vertebra.
  • Helmet 10 is provided with a pair of chin straps 64 and 66 which are attached at one end to pivots 50.
  • a buckle fixture 68 is provided at one end of strap 66 so that the chin strap may be securely fastened when the helmet is in place on the wearers head.
  • helmet 10 of the present invention will be best understood with reference to FIG. 2.
  • helmet 10 is shown positioned on the head of the wearer.
  • the semispherical shape of helmet section 14 corresponds closely to the semi-spherical shape of the wearers skull 70.
  • lower helmet section 14 is biased downwardly to the lower position as shown in FIG. 2 with lip 42 engaged against stop protuberances 38. If, at this time, the wearer is involved in an accident causing hyper-extension of his neck in a whiplash fashion, his skull 70 will be pivoted backwardly until the broad flange padding 48 engages against his neck.
  • the position of broad lower flange 44 and padding 48 is such that this engagement occurs below the upper fragile cervical area.
  • engagement against the first vertebra 72, the second vertebra 74, or the third vertebra 76 is avoided and engagement with the wearer's neck is in the region of the fourth vertebra 78 or lower.
  • a problem with prior art helmets resided in the fact that the lower, relatively narrow, edge of the helmet would engage against one of the upper vertebra, causing fatal or serious injury to the wearer.
  • the present invention serves greatly to reduce serious injuries.
  • the broad area of impact provided by broad flange portion 44 results in a sharp reduction in the damage of a critical and/or fatal injury.
  • a safety helmet comprising:
  • a first semi-spherical helmet section adapted to cover the top portion of the wearer's head
  • a second semi-spherical helmet section adapted to cover the lower back portion of the wearers head, said first section being nested within said second section with the lower edge of said second section forming the lower rear edge of said helmet and the upper edge of said second section being engaged on the lower portion of said first section, and pivot means for pivotally connecting said second section to said first section about an axis coinciding with a central axis of the first and second sections whereby the second section is slidable over a semispherical surface of said first section;
  • stop means interacting between said first and second sections to limit pivotal motion between said sections such that the lower edge of said second section cannot reach the position of the lower edge of said first section, said lower edge of the second section being in the form of an impact-absorbing flange to prevent injury to the wearer.
  • first stop means limits downward movement of said second section relative to said first section and second stop means limits upward movement of said second section relative to said first section.
  • first stop means limits downward movement of said second section relative to said first section and second stop means limits upward movement of said second section relative to said first section.
  • a safety helmet comprising, in combination:
  • a pair of helmet sections disposed in nested relation so as to provide inner and outer helmet sections, said inner section having a top portion and a rear portion in which said rear portion presents an outer part-spherical surface of generally sectorial form.
  • said outer helmet section being of part-spherical, sectorial form;
  • said outer section having a lower edge portion presenting an impact-absorbing flange and an upper marginal edge portion, and abutment means along said upper marginal edge portion for engaging said first and second stop means to establish respectively a normal and an abnormal position of said outer section with respect to said inner section, said outer section being of a width greater than the spacing between said first and second stop means whereby said impact-absorbing flange is disposed outwardly beyond said free marginal edge portion of the inner section when said abutment means is in engagement with said second stop means;
  • a safety helmet as defined in claim 11 wherein said means normally maintaining said abutment means against said first stop means comprises a spring biasing said abutment means against said first stop means whereby said outer section moves against increasing spring reaction force as said abutment means approaches said second stop means.

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  • Helmets And Other Head Coverings (AREA)
US342416A 1973-03-19 1973-03-19 Safety helmet Expired - Lifetime US3860966A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US342416A US3860966A (en) 1973-03-19 1973-03-19 Safety helmet
CA175,589A CA992254A (en) 1973-03-19 1973-07-04 Safety helmet
AU57910/73A AU5791073A (en) 1973-03-19 1973-07-10 Safety helmet
GB3319873A GB1389625A (en) 1973-03-19 1973-07-12 Stephens w a safety helmet
IT52045/73A IT990367B (it) 1973-03-19 1973-08-16 Elmetto di sicurezza
FR7331999A FR2222033A1 (de) 1973-03-19 1973-09-05
DE19732344821 DE2344821A1 (de) 1973-03-19 1973-09-05 Sicherheitshelm
SE7313379A SE403558B (sv) 1973-03-19 1973-10-02 Skyddshjelm
JP48115377A JPS49120747A (de) 1973-03-19 1973-10-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US342416A US3860966A (en) 1973-03-19 1973-03-19 Safety helmet

Publications (1)

Publication Number Publication Date
US3860966A true US3860966A (en) 1975-01-21

Family

ID=23341726

Family Applications (1)

Application Number Title Priority Date Filing Date
US342416A Expired - Lifetime US3860966A (en) 1973-03-19 1973-03-19 Safety helmet

Country Status (9)

Country Link
US (1) US3860966A (de)
JP (1) JPS49120747A (de)
AU (1) AU5791073A (de)
CA (1) CA992254A (de)
DE (1) DE2344821A1 (de)
FR (1) FR2222033A1 (de)
GB (1) GB1389625A (de)
IT (1) IT990367B (de)
SE (1) SE403558B (de)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054953A (en) * 1975-09-02 1977-10-25 Philippe De Barsy Crash helmet
US4115874A (en) * 1977-02-21 1978-09-26 Masahiro Hasegawa Helmet for use in riding vehicles
US4586200A (en) * 1984-03-26 1986-05-06 Poon Melvyn C Protective crash helmet
US4970729A (en) * 1987-05-12 1990-11-20 Honda Motor Co., Ltd. Helmet
US6003156A (en) * 1998-05-28 1999-12-21 Anderson; Russell Jeffrey Safety helmet lockout system
US20020124298A1 (en) * 2001-03-08 2002-09-12 Muskovitz David T. Protective helmet and integrated vent system
US20040064873A1 (en) * 2002-05-29 2004-04-08 Muskovitz David T. In-mold protective helmet having integrated ventilation system
US20050204456A1 (en) * 2003-04-02 2005-09-22 Dennis Piper Retention system for headgear
FR2876006A1 (fr) * 2004-04-29 2006-04-07 Msa Gallet Sa Perfectionnement pour casque de protection
WO2006099928A1 (en) * 2005-03-25 2006-09-28 Mango Sport System S.R.L. Protective helmet for sports use and for work use
US20070136932A1 (en) * 2005-12-20 2007-06-21 Muskovitz David T Helmet including vent and actuator assembly for moving vent shutter and methods of using same
US20080250549A1 (en) * 2007-04-13 2008-10-16 Teton Outfitters, Llc Helmet
US20100101005A1 (en) * 2006-10-13 2010-04-29 Peter Alec Cripton Apparatus for mitigating spinal cord injury
CN105377068A (zh) * 2013-06-13 2016-03-02 卡斯克股份公司 用于自行车运动的选择性通风头盔
US10136692B2 (en) 2002-05-01 2018-11-27 Riddell, Inc. Sports helmet
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
USD856601S1 (en) 2011-05-02 2019-08-13 Riddell, Inc. Football helmet
US20200268087A1 (en) * 2019-02-22 2020-08-27 Shoei Co., Ltd. Helmet airflow control member and 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
US11103024B2 (en) * 2018-06-25 2021-08-31 Bell Sports, Inc. Helmet with magnetically-operated air vent
US11154108B2 (en) * 2015-02-25 2021-10-26 Joey LaRocque Vented soft-sided 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
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

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2654051C2 (de) * 1976-11-29 1984-02-02 Culiser Netherlands B.V., Amsterdam Unfallschutz-Halsmanschette an einem Sturzhelm, insbesondere für Motorradfahrer
FR2430736A2 (fr) * 1978-07-13 1980-02-08 Guerre Berthelot Pierre Dispositif d'assujetissement ameliore des casques
US4290150A (en) * 1977-11-08 1981-09-22 G P A International Protective helmets and fastening devices therefor
FR2466205A1 (fr) * 1979-09-28 1981-04-10 Bibollet Jean Claude Casque de protection mecanique cranienne
EP0074658A3 (de) * 1981-09-14 1983-06-01 Adalbert Hayduk Sturz- und Schutzhelm
FR2532528B1 (fr) * 1982-09-03 1985-06-07 Galet Adrien Casque de protection
DE8229801U1 (de) * 1982-09-16 1983-01-27 Hans Römer GmbH + Co, 7910 Neu-Ulm Schutzhelm, insbesondere Motorradhelm
JPS6159633U (de) * 1984-09-25 1986-04-22
FR2573630B1 (fr) * 1984-11-26 1987-02-27 Santini Jean Jacques Casque de protection sportif ou professionnel
IT8552817V0 (it) * 1985-01-09 1985-01-09 Boretti Gianromano Copricapo protettivo particolarmente per attivita sportive
JPH0516183Y2 (de) * 1989-11-08 1993-04-28
GB2247820B (en) * 1990-08-24 1994-09-28 Ind Ltd W Headset
GB9517046D0 (en) * 1995-08-19 1995-10-25 Howat Jonathan M P Protective headwear
WO2006022679A1 (en) * 2004-08-04 2006-03-02 Full90 Sports, Inc. Retention system for headgear

Citations (8)

* Cited by examiner, † Cited by third party
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US2017059A (en) * 1933-11-04 1935-10-15 Edwin U Gingg Filter window for welders' helmets
US2860343A (en) * 1955-10-27 1958-11-18 Leonard P Frieder Headgear with retractable eye shield
US2861274A (en) * 1957-02-21 1958-11-25 Whitney A Stuart Three piece helmet
US3139623A (en) * 1962-01-19 1964-07-07 Jr George W Joseph Football helmet back flap
US3230544A (en) * 1964-08-04 1966-01-25 Frank J Mager Headgear having a neck protecting flap
US3242500A (en) * 1964-08-24 1966-03-29 John W Derr Protective head covering
US3383706A (en) * 1965-11-09 1968-05-21 Ml Aviation Co Ltd Flying helmets
US3591863A (en) * 1969-05-19 1971-07-13 Luzette O Sparin Helmet

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2017059A (en) * 1933-11-04 1935-10-15 Edwin U Gingg Filter window for welders' helmets
US2860343A (en) * 1955-10-27 1958-11-18 Leonard P Frieder Headgear with retractable eye shield
US2861274A (en) * 1957-02-21 1958-11-25 Whitney A Stuart Three piece helmet
US3139623A (en) * 1962-01-19 1964-07-07 Jr George W Joseph Football helmet back flap
US3230544A (en) * 1964-08-04 1966-01-25 Frank J Mager Headgear having a neck protecting flap
US3242500A (en) * 1964-08-24 1966-03-29 John W Derr Protective head covering
US3383706A (en) * 1965-11-09 1968-05-21 Ml Aviation Co Ltd Flying helmets
US3591863A (en) * 1969-05-19 1971-07-13 Luzette O Sparin Helmet

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054953A (en) * 1975-09-02 1977-10-25 Philippe De Barsy Crash helmet
US4115874A (en) * 1977-02-21 1978-09-26 Masahiro Hasegawa Helmet for use in riding vehicles
US4586200A (en) * 1984-03-26 1986-05-06 Poon Melvyn C Protective crash helmet
US4970729A (en) * 1987-05-12 1990-11-20 Honda Motor Co., Ltd. Helmet
US6003156A (en) * 1998-05-28 1999-12-21 Anderson; Russell Jeffrey Safety helmet lockout system
US20020124298A1 (en) * 2001-03-08 2002-09-12 Muskovitz David T. Protective helmet and integrated vent system
US10143257B2 (en) 2002-05-01 2018-12-04 Riddell, Inc. Protective sports helmet
US10136692B2 (en) 2002-05-01 2018-11-27 Riddell, Inc. Sports helmet
US10932514B2 (en) 2002-05-01 2021-03-02 Riddell, Inc. Protective sports helmet
US20040064873A1 (en) * 2002-05-29 2004-04-08 Muskovitz David T. In-mold protective helmet having integrated ventilation system
US8256032B2 (en) 2002-05-29 2012-09-04 Muskovitz David T In-mold protective helmet having integrated ventilation system
US9332801B2 (en) * 2002-05-29 2016-05-10 David T. Muskovitz In-mold protective helmet having integrated ventilation system
US10524529B2 (en) 2002-05-29 2020-01-07 Resolution Strategic Development, Inc. In-mold protective helmet having integrated ventilation system
US20080295228A1 (en) * 2002-05-29 2008-12-04 Muskovitz David T In-Mold Protective Helmet Having Integrated Ventilation System
US20130067644A1 (en) * 2002-05-29 2013-03-21 Resolution Strategic Development, Inc. In-mold protective helmet having integrated ventilation system
US20050204456A1 (en) * 2003-04-02 2005-09-22 Dennis Piper Retention system for headgear
FR2876006A1 (fr) * 2004-04-29 2006-04-07 Msa Gallet Sa Perfectionnement pour casque de protection
US8146177B2 (en) 2005-03-25 2012-04-03 Mango Sport System, S.R.L. Protective helmet for sports use and for work use
WO2006099928A1 (en) * 2005-03-25 2006-09-28 Mango Sport System S.R.L. Protective helmet for sports use and for work use
US20080189835A1 (en) * 2005-03-25 2008-08-14 Mango Sport System S.R.L. Protective Helmet For Sports Use and For Work Use
US7975320B2 (en) 2005-12-20 2011-07-12 Smith Optics, Inc. Helmet including vent and actuator assembly for moving vent shutter and methods of using same
US20070136932A1 (en) * 2005-12-20 2007-06-21 Muskovitz David T Helmet including vent and actuator assembly for moving vent shutter and methods of using same
US8156569B2 (en) 2006-10-13 2012-04-17 The University Of British Columbia Protective helmet with movable outer shell relative to inner shell
US8296863B2 (en) 2006-10-13 2012-10-30 The University Of British Columbia Method for a protective helmet with movable outer shell relative to inner shell
US20100101005A1 (en) * 2006-10-13 2010-04-29 Peter Alec Cripton Apparatus for mitigating spinal cord injury
US20080250549A1 (en) * 2007-04-13 2008-10-16 Teton Outfitters, Llc Helmet
US7987525B2 (en) * 2007-04-13 2011-08-02 Klim Helmet
US10271605B2 (en) 2007-04-16 2019-04-30 Riddell, Inc. Protective sports helmet
US10561193B2 (en) 2007-04-16 2020-02-18 Riddell, Inc. Protective sports helmet
USD916385S1 (en) 2011-05-02 2021-04-13 Riddell, Inc. Football helmet
USD856600S1 (en) 2011-05-02 2019-08-13 Riddell, Inc. Football helmet
USD856601S1 (en) 2011-05-02 2019-08-13 Riddell, Inc. Football helmet
USD838922S1 (en) 2011-05-02 2019-01-22 Riddell, Inc. Football helmet
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
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
CN105377068A (zh) * 2013-06-13 2016-03-02 卡斯克股份公司 用于自行车运动的选择性通风头盔
USD927078S1 (en) 2014-02-12 2021-08-03 Riddell, Inc. Football helmet
USD844255S1 (en) 2014-02-12 2019-03-26 Riddell, Inc. Football helmet
US11154108B2 (en) * 2015-02-25 2021-10-26 Joey LaRocque Vented soft-sided helmet
US11213736B2 (en) 2016-07-20 2022-01-04 Riddell, Inc. System and methods for designing and manufacturing a bespoke protective sports helmet
US11712615B2 (en) 2016-07-20 2023-08-01 Riddell, Inc. System and method of assembling a protective sports helmet
US11103024B2 (en) * 2018-06-25 2021-08-31 Bell Sports, Inc. Helmet with magnetically-operated air vent
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
US11167198B2 (en) 2018-11-21 2021-11-09 Riddell, Inc. Football helmet with components additively manufactured to manage impact forces
USD927084S1 (en) 2018-11-22 2021-08-03 Riddell, Inc. Pad member of an internal padding assembly of a protective sports helmet
US20200268087A1 (en) * 2019-02-22 2020-08-27 Shoei Co., Ltd. Helmet airflow control member and helmet
US11638455B2 (en) * 2019-02-22 2023-05-02 Shoei Co., Ltd. Helmet airflow control member and helmet

Also Published As

Publication number Publication date
DE2344821A1 (de) 1974-10-03
GB1389625A (en) 1975-04-03
SE403558B (sv) 1978-08-28
CA992254A (en) 1976-07-06
FR2222033A1 (de) 1974-10-18
AU5791073A (en) 1975-01-16
JPS49120747A (de) 1974-11-19
IT990367B (it) 1975-06-20

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