阅读说明：本技术 弹道保护头盔 (Ballistic protective helmet ) 是由 乔治·沙尔皮纳克 于 2019-01-28 设计创作，主要内容包括：本发明涉及一种弹道保护头盔(1),包括：由金属材料形成的头盔圆顶(2),其中所述头盔圆顶(2)包括面向穿戴者头部的内侧和相反的外侧(4)。而且,所述弹道保护头盔(1)包括布置在所述头盔圆顶(2)的外侧(4)上的层(3),所述层由纤维复合材料形成。(The invention relates to a ballistic protective helmet (1) comprising: a helmet dome (2) formed from a metal material, wherein the helmet dome (2) comprises an inner side facing the head of a wearer and an opposite outer side (4). Furthermore, the ballistic protection helmet (1) comprises a layer (3) arranged on an outer side (4) of the helmet dome (2), the layer being formed from a fibre composite material.)

1. A ballistic protective helmet (1) comprising:

a. a helmet dome (2) formed of a metal material, wherein the helmet dome (2) comprises an inner side facing the head of a wearer and an opposite outer side (4); and

b. a layer (3) arranged on the outer side (4) of the helmet dome (2), the layer being formed from a fibre composite material.

2. A ballistic protective helmet (1) comprising:

a. a helmet dome (2) formed of a metal material, wherein the helmet dome (2) comprises an inner side facing the head of a wearer and an opposite outer side (4); and

b. -first mounting means (5) arranged on the outer side (4) of the helmet dome (2), said mounting means being designed such that a layer (3) formed of a fibre composite material can be detachably mounted to the outer side (4) of the helmet dome (2).

3. The ballistic protective helmet (1) according to one of the preceding claims, wherein the layer (3) has a thickness (14) of 5 to 30 mm.

4. The ballistic protective helmet (1) according to one of the preceding claims, wherein the fibrous composite material comprises polyethylene fibers.

5. The ballistic protective helmet (1) according to one of the preceding claims, wherein the metallic material is titanium or a titanium alloy.

6. The ballistic protection helmet (1) according to one of claims 1 or 3-5, further comprising first mounting means (5), the first mounting means (5) being designed such that the layer (3) formed of a fiber composite material can be detachably mounted to the outer side (4) of the helmet dome (2).

7. The ballistic protection helmet (1) according to one of claims 1 or 3-6, wherein the layer (3) is arranged in a shield pattern in the forehead region of the helmet dome (2).

8. The ballistic protection helmet (1) according to one of claims 2-6, wherein the first mounting means (5) is arranged in a forehead region of the helmet dome (2).

9. The ballistic protective helmet (1) according to one of the preceding claims, further comprising a metal strip (13), the metal strip (13) being arranged at least partially in an overlapping manner with the layer (3) and being firmly connected to the helmet dome (2).

10. The ballistic protection helmet (1) according to one of the preceding claims, wherein the protection helmet (1) is designed such that the minimum distance between the inner side of the helmet dome (2) and the wearer's head (10) is at least 10 millimeters when the protection helmet (1) is worn.

11. The ballistic protective helmet (1) according to one of the preceding claims, further comprising a headband (11) connected to the helmet dome (2), which holds the helmet dome (2) at a distance from the wearer's head (10) when the protective helmet (1) is worn.

12. The ballistic protection helmet (1) according to one of the preceding claims, wherein the layer (3) comprises second mounting means designed such that the layer (3) can be detachably mounted to the outer side (4) of the helmet dome (2).

13. A shield (3) for a ballistic protective helmet (1),

wherein the protective helmet (1) comprises a helmet dome (2) formed from a metal material,

wherein the helmet dome (2) comprises an inner side facing the wearer's head (10) and an opposite outer side (4),

wherein the shield (3) is formed from a fibre composite material, and

wherein the shield (3) is designed such that it can be mounted to the outer side (4) of the helmet dome (2).

14. A shield (3) according to the preceding claim, wherein the shield (3) is designed such that it can be arranged in the forehead region of the helmet dome (2).

15. The ballistic protection helmet (1) according to one of claims 1-12 or the shield (3) according to one of claims 13-14, wherein the layer (3) or the shield (3) comprises a concave surface corresponding to a convex region of the outer side (4) of the helmet dome (2) in which the layer or the shield (3) is arranged.

Technical Field

The present invention relates to a ballistic protective helmet.

Background

Ballistic protection helmets protect the head of their wearer from direct fire from firearms, but also from impact from debris and swarf or thrust weapons. Such helmets are therefore worn by special combat troops for self-protection, but are also increasingly worn by police officers who come to the scene first (so-called "first responders").

The primary protective function of the protective helmet is to stop a ballistic projectile (such as a bullet or fragment) and prevent the projectile from penetrating the head of the wearer of the protective helmet. Another important aspect of the protective action is to keep the impact of the kinetic energy of the projectile on the wearer's head as small as possible. In particular, the intention is to prevent the projectile from recessing the protective helmet to the extent that considerable residual energy strikes the head. This is particularly problematic in the edge region of the helmet, since the edge tends to bend inwardly when attacked.

Helmets made of aramid and/or polyethylene are known in the prior art, however, these mainly offer protection against fragments and do not have sufficient protection, in particular under direct shooting of bullets (from hand-held weapons), because under shooting of bullets the helmet is susceptible to severe deformation with the result that residual energy strikes the head (which is often lethal). Especially in the edge region, which has a width of up to 30 mm, the edge bends such that the projectile can pass and directly injure the head. In the case of a shot above this edge region (up to about 50 mm), the helmet is typically deformed so that a considerable residual energy strikes the head. Therefore, aramid/polyethylene helmets are primarily suitable as protection against splinters and are less suitable under bullet firing.

Titanium helmets have proven to be much more effective under fire because they are able to convert the kinetic energy of the projectile into plastic deformation over a larger area, so the helmet does not deform inwardly to the point where the head is subjected to a lethal impact. Furthermore, such helmets have a deflecting effect on the projectile and/or its fragments so that the full momentum of the projectile is not transferred to the helmet. Both of these effects are particularly pronounced in the edge region. Thus, the effective protective area of a titanium helmet is much larger than that of an aramid/polyethylene helmet.

Basically, for any type of ballistic protection helmet, the aim is to improve the protection of the helmet against external ballistic impacts, i.e. to prevent lethal effects in the case of higher kinetic energy/energy density of the projectile (caused by greater mass and/or higher impact velocity). Protective helmets known in the prior art for use by special forces and police are only able to provide protection against bullets (or fragments of equivalent kinetic energy) fired from handguns. The protective helmet does not provide any protection against long guns. The term long gun refers to a gun whose barrel, including the breech, exceeds a certain length (e.g., 300 millimeters). An alternative definition of a long gun is based on the total length of the gun (e.g. 600 mm). By definition, handguns are all other guns. Long gun bullets have higher muzzle velocities and often have harder materials (e.g., iron rather than lead) with higher penetration. The kinetic energy of a long gun round is generally higher than that of a pistol round.

Disclosure of Invention

It is therefore an object of the present invention to improve the ballistic protection helmets known in the prior art, in particular for special forces and police, in such a way that they provide sufficient protection when a shot with a higher kinetic energy is to be expected, in particular from a long gun. At the same time, the weight of the helmet should not increase to such an extent that the wearing comfort and the handlability are greatly impaired.

According to a first aspect of the invention, this object is achieved with a ballistic protection helmet comprising: (a.) a helmet dome formed of a metallic material, wherein the helmet dome comprises an inner side facing a wearer's head and an opposite outer side; and (b.) a layer disposed on an outer side of the helmet dome, the layer being formed from a fiber composite material.

The inventors have realized that the protective action of metal helmets known in the art, such as titanium helmets, can be greatly improved in the case where the projectile first hits the layer made of the fiber composite and hits the helmet dome made of metal. Such a material combination also prevents lethal deformation of the helmet dome in the case of projectiles of higher kinetic energy, i.e. greater mass (caliber) and/or impact velocity, especially of the kind intended when shooting from a long gun.

Surprisingly, this effect is achieved by the fibre composite material being arranged on the outside of the helmet dome, for the surprising reason that according to the general opinion of the expert this does not lead to a considerable improvement, since according to this opinion the soft material on the hard material will only be struck by the impact bullet. Thus, if the protective helmets known in the art include soft and hard materials, the soft material is disposed below the hard material in order to prevent the assumed "drive-in". Tests carried out by the inventors have shown that in the combination of the fibre composite material and the underlying metal dome, no drive-in takes place, but surprisingly, a fairly good protection is still achieved even against shots from long guns.

Protection within the scope of the present disclosure refers to the ability of a ballistic protection helmet to receive and/or deflect the momentum of an impacting projectile in such a way that the bullet does not penetrate the wearer's head and the energy acting on the head due to deformation of the helmet remains below a certain threshold value that is generally considered lethal. Thus, a protective helmet with a higher protective effect than another protective helmet can protect the head from projectiles with higher kinetic energy and/or penetration. In any case, if the mass and/or velocity of a projectile is higher, the projectile has a higher kinetic energy than another projectile. Typically, the kinetic energy is the product of mass and velocity squared divided by two.

The protective effect achieved in this respect by the combination of metal domes and fibre composite layers exceeds the total protective effect of the metal and fibre composite considered alone to an unexpected extent. According to the invention, the weight of the helmet according to the invention does not increase proportionally to the protection achieved, but reaches an acceptable level, compared to the helmets of the prior art. The wearing comfort and the palmability are the same. For example, in the helmet according to the invention, by doubling the unit per area, an excellent protective action can be achieved with shots having a kinetic energy of at least three times that of the prior art. The invention is therefore not a compromise between protection on the one hand and weight, wearing comfort and handlability on the other hand. In contrast, the present invention achieves unexpected synergy; most importantly, for the first time, protection of the relatively lightweight helmet against shooting from a long gun is provided.

The layer may cover substantially the entire outer side of the protective helmet. In a preferred embodiment, the layer covers more than 80%, more preferably more than 90% and even more preferably more than 95% of the outer side of the protective helmet. Thus, the protective helmet can play a role in protecting all directions against shooting from all directions.

The layer may be securely attached to the helmet dome. For example, the layer may be glued to the helmet dome with an adhesive. Further, the layer may be formed in one portion. In alternative embodiments, a layer is composed of two or more portions. The two or more portions may be arranged on the helmet dome such that the portions abut each other. In this way, a substantially uninterrupted layer of fibre composite material consisting of several segments can be formed of two or more parts. For example, a segment may be arranged in the forehead region of the helmet, a segment on the left side of the helmet, and a segment on the right side of the helmet.

Another aspect of the invention relates to a ballistic protective helmet comprising: (a.) a helmet dome formed of a metallic material, wherein the helmet dome comprises an inner side facing a wearer's head and an opposite outer side; and (b.) a first mounting means arranged on the outside of the helmet dome, which mounting means are designed such that a layer made of a fibre composite material can be detachably mounted on the outside of the helmet dome.

According to the first and second aspects of the invention, the layer may thus be detachably connected to the helmet dome. This makes it possible to adapt the protective action of the helmet to the situation. For example, if a shot from a long gun is intended, the layer may be mounted to the helmet dome like a shield. If a shot with a smaller caliber is desired, the protective helmet can be worn without a shield to reduce weight and improve wearing comfort. This aspect also contributes to solving the problem underlying the present invention.

The layer may have a thickness of 5 to 30 mm. Preferably, the layer has a thickness of 6 to 20 mm, further preferably the layer has a thickness of 10 to 15 mm, further preferably 12 mm. The inventors have realized that in these thickness ranges the protection is well improved without the weight of the helmet or its wearing comfort reaching unacceptable levels. The weight increase caused by a fibre composite material of such a thickness is far superior to the weight increase caused by a much improved protection, for example against long gun shots.

The fibrous composite of the layers may comprise polyethylene fibers. The combination of a fibrous composite made of polyethylene with a helmet dome made of metal proved to be excellent and reduced to an unexpectedly low level of residual energy acting on the head. Preferably, the fibre composite thus comprises substantially (i.e. in more than half of all types of fibres) polyethylene fibres. Further preferably, the fibre composite comprises 90% polyethylene fibres.

In addition to the fibres, the layer may also comprise other components for binding the fibres, such as resins or artificial resins, or solvents or residues thereof.

The metal material of the helmet dome may be titanium or a titanium alloy. The inventors have found that titanium in combination with a fibrous composite of layers has an excellent protective effect.

The ballistic protective helmet according to the present invention may further comprise a first mounting means designed such that the layer formed of the fiber composite material may be detachably mounted on the outside of the helmet dome. As already explained, this makes it possible to adapt the protective action of the helmet to the situation.

In the forehead region of the helmet dome, the layers may be arranged like a shield. This improves the protective action of the helmet, especially under frontal shooting, and allows the wearer of the helmet to more directly cope with dangerous situations with lower risk.

The first mounting means may be arranged in the forehead region of the helmet dome. This makes it possible to install the layer in the forehead region with the advantages already mentioned.

The ballistic protective helmet may further comprise a metal strip arranged in overlapping relation with the layer and securely connected to the helmet dome. The metal strip can be arranged in particular in the edge region of the helmet dome. Such a metal strip additionally increases the protective effect, in particular in the problematic edge regions. Such a metal strip has proved to be very advantageous in particular when interacting with a layer or a shield made of a fibre composite material.

The protective helmet may be designed such that the minimum distance between the inside of the helmet dome and the wearer's head is at least 10 mm when the helmet is worn. Preferably, the distance is 10 mm to 40 mm, and more preferably 15 mm to 30 mm. The distance of the helmet dome to the head has the effect of preventing or at least reducing the impact on the head due to deformation of the helmet dome under shooting, when interacting with the layer made of fibre composite material.

The ballistic protective helmet according to the present invention can further include a headband coupled to the helmet dome, the headband maintaining the helmet dome at a distance from the wearer's head when the helmet is worn. As already mentioned, such a distance is advantageous for the protective effect. Furthermore, the headband improves the wearing comfort, since the protective helmet does not rest directly on the head. In this way, pressure points are avoided or at least reduced and ventilation of the head is ensured, which is particularly advantageous at high temperatures.

The layer may comprise second mounting means designed such that the layer can be detachably mounted on the outside of the helmet dome. The second mounting means may be means for interacting with the first mounting means. For example, the first mounting means and the second mounting means together may form a hook and loop fastener. However, the first mounting means and/or the second mounting means may also be at least one button, magnet, snap-fit joint or the like.

Another aspect of the invention relates to a shield for a ballistic protective helmet, wherein the protective helmet comprises a helmet dome formed from a metal material, wherein the helmet dome comprises an inner side facing the head of a wearer and an opposite outer side, wherein the shield is formed from a fibrous composite material, and wherein the shield is designed such that it can be detachably mounted on the outer side of the helmet dome.

The advantages of such an arrangement of the fibre composite material on the outside of the helmet dome made of metal material have already been explained and are also applicable to this aspect of the invention.

The shield may be designed such that it is removably mounted to the helmet dome. This additionally enables the protective action of the helmet to be adapted to the situation. For example, if a shot from a long gun is intended, the shield may be mounted to the helmet dome. If the threat is not expected to be significant, the protective helmet can be worn without a shield to reduce weight and improve wearing comfort. This aspect also contributes to solving the problem underlying the present invention.

The removable mounting of the shield can be achieved with the means already described above, for example by means of hook and loop fasteners, buttons or magnets.

The shield may be designed such that it may be arranged in the forehead region of the helmet dome. This improves the protective effect of the helmet, especially in the case of a frontal fire, and allows the wearer of the helmet to more directly cope with dangerous situations with lower risk.

According to all aspects of the invention, the layer or shield made of fibre composite material may have a concave surface corresponding to a convex region of the outside of the helmet dome in which the shield is arranged. The layer or shield thus has the negative form of the helmet dome surface. Only a minimum distance remains between the layer or shield and the helmet dome, which is essentially caused by the mounting means (e.g. hook and loop fasteners or adhesive layer). In this way, a compact ballistic protective helmet is obtained.

Drawings

Aspects of the present invention will be described below based on preferred embodiments with reference to the accompanying drawings. The figures show:

FIG. 1A: a front view of an embodiment of a protective helmet according to the invention, which is arranged with a fibre composite layer in the forehead region;

FIG. 1B: a cross-section of the protective helmet shown in fig. 1A;

FIG. 2A: a front view of an embodiment of a protective helmet according to the invention, having a fiber composite layer in three parts;

FIG. 2B: a cross-section of the protective helmet shown in fig. 2A;

FIG. 3A: a front view of an embodiment of a protective helmet according to the present invention having a fiber composite layer covering substantially the entire helmet dome; and

FIG. 3B: a cross-section of the protective helmet shown in fig. 3A.

Detailed Description

Fig. 1A shows a front view of an embodiment of a protective helmet 1 according to the invention. Fig. 1B shows a cross-section of the plane, indicated with reference a in fig. 1A, orthogonal to the plane of the paper. The protective helmet 1 comprises a helmet dome 2 according to the invention made of metal. In the embodiment of fig. 1A and 1B, the metal is titanium. Basically, however, other metals, such as steel or aluminum, can also be used. The metal may be present as an alloy.

The helmet dome 2 is manufactured in a deep drawing process, preferably from a single piece of titanium sheet. In the embodiment of fig. 1A and 1B, the helmet dome 2 is designed as a layer and has a sheet thickness of 1 to 5 mm. Multilayer structures are also possible.

The protective helmet 1 further comprises a layer 3 made of a fibre composite material. Fiber composites of layers made of ultra-high molecular weight polyethylene fibers (UHMW PE) have proved to be particularly advantageous. In a preferred embodiment, aramid fibers are added to the fibrous composite. UHMW PE is a thermoplastic polymer made from polyethylene having very long molecular chains. The individual fibers have a relatively high specific strength.

The fibers are processed into layers in which the individual fibers are aligned substantially parallel. Such a layer may comprise, in addition to the fibres, a matrix material, for example a resin. To manufacture the layer 3 in the embodiment of fig. 1A and 1B, two or more fiber layers are joined substantially orthogonal to each other and wound on a roll. Due to the orthogonal orientation of the molecular chains, thin layers with high tensile strength in substantially all directions are created. A typical layer thickness is 200 μm. From the sheet wound on the roll, cuts are made, for example with a CNC cutter or laser, and then bound into packs. Typically, for this purpose, 70 to 120 thin layers are stacked on top of each other and then pressed into a laminate under high pressure, typically 50 to 330bar, and high temperature, typically 100 to 150 ℃. For this purpose, heatable presses are used. After pressing, the final profile of the layer 3 is cut out of the laminate. In this embodiment, the layer 3 has a thickness 14 of 6 to 20 mm.

Basically, other fiber composites, including for example aramid fibers, can also be used within the scope of the invention. Thermoplastic fibers have proven particularly effective in this regard. Mixtures of other types of fibers (e.g., polyethylene and aramid) can also be used.

In the embodiment of fig. 1A and 1B, the layer 3 comprises a concave surface corresponding to a convex region of the outer side 4 of the helmet dome 2 in which the layer 3 is arranged. The contour of the layer 3 thus follows the contour of the helmet dome 2. Between the helmet dome 2 and the layer 3 there is a hook and loop strip 5. The layer 3 is thus detachably connected to the helmet dome 2. Basically, instead of a hook and loop strip, other mounting means may be used, such as buttons or magnets, or the layer 3 may be permanently attached to the helmet dome 2, for example by means of an adhesive.

In the embodiment of fig. 1A and 1B, the layer 3 has a width 6 of 222 mm and a height 7 of 124 mm. As an example, the surface of the layer 3 is 300cm²To 500cm². The protective helmet 1 has a width 8 of 225 mm and a depth 9 of 269 mm. By way of example, the surface of the helmet is 1000cm²To 1500cm². The standard head 10 is shown having a dimension 62. The dimensional specifications, particularly the length specifications, are only used as examples. Furthermore, according to the invention, the layer 3 does not necessarily have to be arranged in the forehead region in the manner of a hood. In other embodiments, the layers are disposed in the sides or back of the head. The layer 3 may also comprise a plurality of elements comprising a fibre composite material, which are arranged next to one another on the helmet dome 2. For example, the protective helmet may comprise a fibre composite layer 3 around it in order to achieve an increased protection from all sides.

In other embodiments, two fiber composite layers are arranged in an at least partially overlapping manner, similar to the layers 3 shown in the embodiment of fig. 1A and 1B. For example, in the zone where mainly direct firing is intended, for example in the forehead zone, two fiber composite layers may be arranged in an overlapping manner, whereas in the other zones the helmet dome 2 is covered by only one fiber composite layer.

In the embodiment of fig. 1A and 1B, the protective helmet 1 further comprises a headband 11, so that the helmet dome is maintained at a distance 12 of 10 to 40 mm, preferably 15 to 30 mm, from the head 10. Another optional feature of the helmet 1 is a metal strip 13 arranged at the edge of the forehead region of the helmet below the layer 3 and reinforcing the helmet dome there. The metal strip 13 extends from the right temporal area to the left temporal area and preferably has a height of about 20 to 30 mm. The metal strips 13 additionally improve the ability of the helmet 1 to be subjected to shots in the edge region at a distance of up to about 15 mm from the edge. The metal strip 13 may be glued to the helmet dome 2 by means of a two-component adhesive and a glass fibre mat.

Fig. 2A shows a front view of another embodiment of a protective helmet 1 according to the invention. Fig. 2B shows a cross-section of the plane, indicated with reference B in fig. 2A, orthogonal to the plane of the paper. The protective helmet 1 comprises a helmet dome 2 comparable to the helmet dome 2 from the embodiment of fig. 1A and 1B. Thus, the statements made with respect to the helmet dome 2 with respect to the embodiment shown in fig. 1A and 1B apply.

In contrast to the embodiment of fig. 1A and 1B, the protective helmet 1 in the embodiment of fig. 2A and 2B comprises a fiber composite layer consisting of three segments 3a, 3B and 3 c. The segment 3a is arranged in the forehead region of the protective helmet 1, the segment 3b on the right side of the protective helmet 1 and the segment 3c on the left side of the protective helmet 1. The thickness of the layer formed by the three segments 3a, 3b and 3c is between 6 and 20 mm. With regard to the fiber composite material, the statements made with respect to the embodiment of fig. 1A and 1B basically apply.

The three sections 3a, 3b and 3c of the fibre composite layer are connected to the helmet dome 2 via a hook and loop strip 5. Other mounting means such as buttons or magnets are possible. In other embodiments, the three segments 3a, 3b and 3c are permanently attached to the helmet dome, for example by means of an adhesive. In other embodiments, some segments may be permanently attached to the helmet dome 2, whereas other segments may be removably attached to the helmet dome 2. For example, the segment 3a may be permanently connected to the helmet dome 2 in the forehead region, whereas the lateral segments 3b and 3c may be detachably connected to the helmet dome 2.

The three segments 3a, 3b and 3c are not contiguous, i.e. a small gap is maintained between them. In other embodiments, the three sections 3a, 3b and 3c may be contiguous and thus form a continuous fiber composite layer. The number of segments in the embodiment of fig. 2A and 2B is also used as an example only. In other embodiments, the protective helmet may comprise two or more than three sections of fibrous composite layers.

The protective helmet of the embodiment of fig. 2A and 2B has a width 8 of 253 millimeters and an inner dimension 15 of 225 millimeters. The depth 9 is 271 mm and the distance from the inside of the helmet dome 2 to the standard head 10 (size 62) is 15 to 40 mm. In the embodiment of fig. 1A and 1B, this distance is caused by the headband 11. In this embodiment, the surface of the segments 3a, 3b and 3c is between 300cm²And 500cm²In the meantime. The surface of the protective helmet 1 is between 1000cm²And 1500cm²In the meantime. All of the foregoing dimensions are examples and may have other values in other embodiments.

In the embodiment of fig. 2A and 2B, the protective helmet 1 also comprises a metal strip 13, the statements made with respect to fig. 1A and 1B applying to the metal strip 13.

Fig. 3A shows a front view of another embodiment of a protective helmet 1 according to the invention. Fig. 3B shows a cross-section of the plane indicated with reference C in fig. 3A, orthogonal to the plane of the paper. The protective helmet 1 comprises a helmet dome 2 comparable to the helmet dome 2 from the embodiment of fig. 1A, 1B, 2A and 2B. Thus, the statements made with respect to the helmet dome 2 with respect to the embodiments shown in fig. 1A, 1B, 2A and 2B apply.

In the embodiment of fig. 3A and 3B, the fiber composite layer 3 is arranged substantially on the entire outer side 4 of the helmet dome 2, i.e. the layer 3 substantially completely covers the helmet dome. In this exemplary embodiment, the layer 3 is designed as a fiber composite layer of one layer. For the production of such a fiber composite layer, the statements made with respect to the embodiments of fig. 1A, 1B, 2A and 2B apply.

In the embodiment of fig. 3A and 3B, the layer 3 is permanently connected to the underlying helmet dome 2 by means of a connecting layer 5. For example, such a tie layer may be based on a binder such as a two-component binder, and where appropriate a glass fiber mat.

The protective helmet of the embodiment of fig. 3A and 3B has a width of 8 of 253 millimeters and an inner dimension of 15 of 225 millimeters. The depth 9 is 269 mm and the distance from the inside of the helmet dome 2 to the standard head 10 (size 62) is 15 to 40 mm. In the embodiment of fig. 1A and 1B, this distance is caused by the headband 11. The height 7 of the helmet is 202 mm. The surface of the protective helmet 1 is between 1000cm²And 1500cm²In the meantime. All of the foregoing dimensions are examples and may have other values in other embodiments.

In the embodiment of fig. 3A and 3B, the protective helmet 1 also comprises a metal strip 13, the statements made with respect to fig. 1A, 1B, 2A and 2B applying to the metal strip 13.

The protective helmet according to the invention may comprise a visor and/or a neck (not shown in the figures). For this purpose, the protective helmet may comprise one or several mounting means for detachably connecting the visor and/or the neck guard to the protective helmet. Alternatively, the visor and/or neck guard may be securely attached to the helmet dome.

For example, the protective effect of ballistic protective helmets can be tested according to the test guidelines "ballistic helmets with visor and neck (Durchhshusshemmender Helm mit Visier und Nackenschutz") of the Association of centers for anti-attack materials and structural testing (Vereinigung der Pr uftelllen fur and griffbremmende Materiale material und Konstryption, VPAM). According to this test guideline, the energy transferred to the measuring head (usually soap) at the time of shooting must not exceed 25 joules. Ballistic protective helmets are classified as protective grades depending on caliber and projectile velocity that do not exceed this limit. Although ballistic protective helmets known in the art are classified as up to protection class 3, embodiments of protective helmets according to the present invention may be classified as protection class 6 ("VPAM 6"). In particular, the head withstood only 2 joules of energy at a shot of 7.62x 39FeC/M43 caliber and a projectile velocity of 720M/s as measured by VPAM. Such calibers are typically fired from a long gun.

Of course, other residual energies may yield other embodiments of the invention. In addition, embodiments of the present invention may also be tested in accordance with other test guidelines and/or specifications and/or standards.

Embodiments of the present invention relate to ballistic protective helmets for special forces and police. However, the invention is not limited thereto, but may also be used for protective helmets for military use.

List of reference numerals:

1 protective helmet

2 helmet dome

3 fiber composite layer

4 outside of the helmet dome

5 mounting device

Width of 6 layers

7 height

8 width

9 depth of

10 standard head

11 head band

12 head to helmet dome distance

13 Metal strip

14 layers thick

15 inner dimension