WO2004029538A1 - Shell for ballistic helmet - Google Patents
Shell for ballistic helmet Download PDFInfo
- Publication number
- WO2004029538A1 WO2004029538A1 PCT/IL2003/000782 IL0300782W WO2004029538A1 WO 2004029538 A1 WO2004029538 A1 WO 2004029538A1 IL 0300782 W IL0300782 W IL 0300782W WO 2004029538 A1 WO2004029538 A1 WO 2004029538A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shell
- layers
- less
- areal density
- paraaramide
- Prior art date
Links
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
- F41H5/04—Plate construction composed of more than one layer
- F41H5/0471—Layered armour containing fibre- or fabric-reinforced layers
- F41H5/0485—Layered armour containing fibre- or fabric-reinforced layers all the layers being only fibre- or fabric-reinforced layers
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
Definitions
- This invention relates to shells for ballistic helmets, and more particularly to helmet shells made of paraaramide fabrics such as Kevlar®, protecting from bullets and fragments.
- a shell for ballistic helmet is supposed to stop incident shrapnel fragments or bullets, thereby protecting the head of the user.
- the aim of shell design and manufacture is to obtain a shell providing required ballistic protection at minimal weight.
- the weight of the shell is of great importance because the helmet user carries it for long periods of time, and the lighter the helmet, the more it is convenient in use.
- the ballistic protection of the helmet is normally tested by the so-called V50 test, 17 grain, according to known US and European standards.
- the test measures the velocity at which 50% of fragments pierce the helmet while 50% are retained.
- An average areal density of the shell material is the weight of the shell divided by its area.
- the ratio between the level of ballistic protection and the areal density is the decisive parameter determining the helmet quality, and in general if it is higher, then the helmet is better. This ratio is called protection coefficient:
- Protection coefficient V50/areal density
- One of the most common technologies for production of ballistic helmet shells is pressure forming of the shells in a mold, from a stack of paraaramide fabric blanks with bonding resin.
- the manufacturers are known to use up to 16-24 layers of fabric with 220 to 300 g m 2 areal density, and bonding resin in about 14- 20%) of the total shell weight.
- the stack of blanks soaked with resin is pressed in a mold at about 30-40 Kg/cm 2 pressure at temperature suitable for the resin polymerization.
- the obtained shells have more than 8-9 Kg/m 2 areal density, 7.5- 9 mm thickness, and the shell weight is not less than 0.850 Kg.
- a shell for ballistic helmet formed from a plurality of paraaramide fabric layers and bonding resin.
- the fabric layers have areal density less than 200g/m 2
- the shell has average thickness less than 6.5 mm and average areal density less than 7.5 Kg/m 2 .
- part of the fabric layers have areal density less than 160g/m 2
- the rest fabric layers have areal density between 200 and 160g/m 2 .
- the number of paraaramide layers should be greater than 28, preferably not less than 33, more preferably 38 and more, at least part of the layers having areal density not exceeding 160g/m 2 .
- the bonding resin constitutes less than 12% of the shell weight.
- the present invention is based on a surprising discovery of the inventors that, if in a shell for a ballistic helmet formed from a plurality of paraaramide fabric layers and bonding resin, considerably greater number of layers is used than that known heretofore with a lower areal density (weight) of the layers than that typically used in the practice, the shell yields the required ballistic protection at lighter weight than conventional helmet shells, or better ballistic protection with the same shell weight. Another contributing factor is the usage of layers with different areal density.
- a method for the production of shells for ballistic helmets from a plurality of layers as described above including pressing and bonding the plurality of layers at pressure equal to or above 150Kg/cm 2 , preferably above 300Kg cm 2 .
- composition and method of production according to the present invention provide for lighter helmets with better ballistic protection qualities.
- One example of the material used for the production of a shell according to the present invention is a material made of 38-40 layers of JKEVLAR®-J M2 and/or other paraaramide fabric having areal density respectively 155g/m 2 and
- KEVLAR®-JKM2 fabric is used mainly in the external layers of the shell.
- the above shell structure is manufactured by pressing the stack of blanks to 6 mm thickness using pressures of 150 to 300Kg/cm 2 .
- the area of the shell is about 0.1 m 2 .
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/529,557 US20060048284A1 (en) | 2002-09-30 | 2003-09-30 | Shell for ballistic helmet |
AU2003269436A AU2003269436A1 (en) | 2002-09-30 | 2003-09-30 | Shell for ballistic helmet |
US12/289,431 US20090061186A1 (en) | 2002-09-30 | 2008-10-28 | Shell for ballistic helmet |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL152006 | 2002-09-30 | ||
IL15200602A IL152006A0 (en) | 2002-09-30 | 2002-09-30 | Shell for ballistic helmet |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/289,431 Continuation US20090061186A1 (en) | 2002-09-30 | 2008-10-28 | Shell for ballistic helmet |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004029538A1 true WO2004029538A1 (en) | 2004-04-08 |
Family
ID=29798328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IL2003/000782 WO2004029538A1 (en) | 2002-09-30 | 2003-09-30 | Shell for ballistic helmet |
Country Status (4)
Country | Link |
---|---|
US (2) | US20060048284A1 (en) |
AU (1) | AU2003269436A1 (en) |
IL (1) | IL152006A0 (en) |
WO (1) | WO2004029538A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7708852B2 (en) * | 2005-02-04 | 2010-05-04 | Egon Busch | Method for producing a ballistic protective armour |
FR2991909A1 (en) * | 2012-06-19 | 2013-12-20 | Thales Sa | Composite material structure, useful in e.g. helmet used by pilot of an aircraft, comprises internal surface, external surface, and three folds made of first fabric of a resin matrix, where first fold is close to external surface |
WO2014184407A1 (en) * | 2013-05-13 | 2014-11-20 | Fedur, S.A. | Fragment- and bullet-proof helmet |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL162337A0 (en) * | 2004-06-03 | 2005-11-20 | David Mansour | Cooling system for body armour |
US9631898B2 (en) | 2007-02-15 | 2017-04-25 | Honeywell International Inc. | Protective helmets |
FR2942111B1 (en) * | 2009-02-13 | 2011-02-25 | Kuji Sports Ltd | DEFORMABLE PROTECTION HELMET |
US10081159B2 (en) * | 2014-12-05 | 2018-09-25 | Honeywell International Inc. | Materials gradient within armor for balancing the ballistic performance |
WO2023141453A1 (en) * | 2022-01-19 | 2023-07-27 | Gentex Corporation | Coating and composite materials for enhancing ballistic protection |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4916000A (en) * | 1987-07-13 | 1990-04-10 | Allied-Signal Inc. | Ballistic-resistant composite article |
US6012178A (en) * | 1995-04-08 | 2000-01-11 | Akzo Nobel Nv | Antiballistic protective helmet |
WO2000042246A1 (en) * | 1999-01-18 | 2000-07-20 | Twaron Products Gmbh | Penetration-resistant material comprising fabric with high linear density ratio of two sets of threads |
WO2002043949A2 (en) * | 2000-11-28 | 2002-06-06 | 3Tex, Inc. | Contour rigid composite structure and method |
EP1241432A1 (en) * | 2001-03-15 | 2002-09-18 | Teijin Twaron GmbH | Penetration-resistant material comprising fabric with high linear density ratio of two sets of threads |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6654871B1 (en) * | 1999-11-09 | 2003-11-25 | Motorola, Inc. | Device and a method for performing stack operations in a processing system |
US20030009530A1 (en) * | 2000-11-08 | 2003-01-09 | Laurent Philonenko | Instant message presence protocol for facilitating communication center activity |
US6993327B2 (en) * | 2001-10-29 | 2006-01-31 | Motorola, Inc. | Multicast distribution of presence information for an instant messaging system |
US7233979B2 (en) * | 2002-03-14 | 2007-06-19 | Microsoft Corporation | Instant messaging session invite for arranging peer-to-peer communication between applications |
US7555108B2 (en) * | 2002-10-01 | 2009-06-30 | Nortel Networks Limited | Presence information for telephony users |
-
2002
- 2002-09-30 IL IL15200602A patent/IL152006A0/en unknown
-
2003
- 2003-09-30 WO PCT/IL2003/000782 patent/WO2004029538A1/en not_active Application Discontinuation
- 2003-09-30 US US10/529,557 patent/US20060048284A1/en not_active Abandoned
- 2003-09-30 AU AU2003269436A patent/AU2003269436A1/en not_active Abandoned
-
2008
- 2008-10-28 US US12/289,431 patent/US20090061186A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4916000A (en) * | 1987-07-13 | 1990-04-10 | Allied-Signal Inc. | Ballistic-resistant composite article |
US6012178A (en) * | 1995-04-08 | 2000-01-11 | Akzo Nobel Nv | Antiballistic protective helmet |
WO2000042246A1 (en) * | 1999-01-18 | 2000-07-20 | Twaron Products Gmbh | Penetration-resistant material comprising fabric with high linear density ratio of two sets of threads |
WO2002043949A2 (en) * | 2000-11-28 | 2002-06-06 | 3Tex, Inc. | Contour rigid composite structure and method |
EP1241432A1 (en) * | 2001-03-15 | 2002-09-18 | Teijin Twaron GmbH | Penetration-resistant material comprising fabric with high linear density ratio of two sets of threads |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7708852B2 (en) * | 2005-02-04 | 2010-05-04 | Egon Busch | Method for producing a ballistic protective armour |
FR2991909A1 (en) * | 2012-06-19 | 2013-12-20 | Thales Sa | Composite material structure, useful in e.g. helmet used by pilot of an aircraft, comprises internal surface, external surface, and three folds made of first fabric of a resin matrix, where first fold is close to external surface |
WO2014184407A1 (en) * | 2013-05-13 | 2014-11-20 | Fedur, S.A. | Fragment- and bullet-proof helmet |
Also Published As
Publication number | Publication date |
---|---|
IL152006A0 (en) | 2003-07-31 |
AU2003269436A1 (en) | 2004-04-19 |
US20090061186A1 (en) | 2009-03-05 |
US20060048284A1 (en) | 2006-03-09 |
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