Multidirectional protective harness with angled straps for all helmets with an outer shell

Abstract

The invention relates to a suspension system for helmets with angled straps acting as chords between points on a circular barrier or the shell of the helmet, avoiding a central node, so as to provide an immediate response to lateral impacts. The system includes a fixed, non-adjustable harness integrated with the circular barrier for stable head retention without the need for manual adjustment. Straps with different tensile strengths, optionally combined with elastomeric components, enhance energy absorption and force distribution across the helmet shell. The design is lightweight and simple, and improves ventilation and comfort without bulky pads or complex mechanisms.

Description

[0001] MULTI-DIRECTIONAL PROTECTIVE NET WITH ANGLED STRAPS FOR ALL HELMETS WITH AN OUTER SHELL

[0002] RELATED APPLICATIONS

[0003] This application is a continuation of U.S. Application No. 19 / 276,205, entitled "Multidirectional Protective Net with Angled Straps for All Helmets with Outer Shell," filed on July 22, 2025, which claims priority over U.S. Provisional Application No. 63 / 707,626, entitled "Multidirectional Impact Protection Suspension System for Helmets and Method for Manufacturing It," filed on October 15, 2024, all of which are incorporated herein by reference in their entirety.

[0004] TECHNICAL FIELD

[0005] This disclosure relates to a multidirectional protective net with angled straps, designed to absorb and dissipate impact energy, particularly from side impacts, by means of a fixed, non-adjustable net of angled straps that act as ropes, anchored to a flexible circular barrier formed by a single strap or a continuous arrangement of flexible straps, optionally with hooks. The system provides multidirectional protection, enhanced comfort, ventilation, and compatibility with retention systems for all types of helmets with an outer shell, including, but not limited to, military, sports, industrial, safety, and motorcycle helmets.

[0006] BACKGROUND

[0007] Helmet suspension systems have long been developed to improve user safety by providing cushioning between the head and the outer shell, distributing impact forces, and enhancing comfort. Traditional systems, such as those on the MI military helmet, typically employ folded or loose straps that converge at a central intersection node. More recent designs, including four- and six-point suspensions, often utilize adjustment mechanisms or crisscrossing strap geometries that prioritize vertical impact absorption. However, these conventional designs tend to have limitations in addressing non-vertical impacts, particularly lateral forces, due to delayed tensile engagement resulting from initial slack, misalignment, or reliance on centralized strap nodes.

[0008] The inventors are familiar with several hull suspension designs in the prior art, including those described in U.S. Patent No. 2,573,250 A (1951), U.S. Patent No. 2,679,046 A (1954), U.S. Patent No. 4,056,852 A (1976), U.S. Patent No. 2,758,306 A (1954), U.S. Patent No. 6,081,931 A (1998), U.S. Patent No. 2,769,176 A (1954), U.S. Patent No. 2,814,043 A (1954), U.S. Patent No. 3,110,900 A (1962), U.S. Publication No. 2016 / 0192727 Al (2016) and International Application No. PCT / IB2023 / 057514 (2023). While these systems introduce improvements in coupling, adjustability, and impact resistance, they often share design features—such as intersecting strap nodes, variable slack under dynamic loads, and reliance on comfort pads—that compromise performance under multidirectional impact conditions and add unnecessary bulk or complexity.

[0009] On the other hand, the present disclosure provides a novel and non-obvious suspension system designed to address the limitations of the prior art by: (1) angled straps that act as ropes between two points on the inner circumference of the circular strap barrier or helmet shell, without passing through a central node, and pre-aligned to respond immediately to side impacts; (2) a fixed, non-adjustable net integrated into a circular strap barrier to restrain the head without manual adjustment; (3) the optional combination of straps with specific tensile properties and optional elastomeric components to maximize energy absorption and distribute forces efficiently with the helmet shell; and (4) a simplified, lightweight design that improves ventilation and comfort without the use of bulky pads or complex mechanical parts.

[0010] Consequently, the disclosed system represents an inventive step in the field of helmet suspension assemblies, improving multi-directional protection, enhancing user comfort, and reducing design complexity in a manner not suggested or taught by the prior art.

[0011] DISCLOSURE SUMMARY

[0012] This disclosure relates to a multidirectional protective net with angled straps for all types of helmets with an outer shell, including military, sports, industrial, safety, and motorcycle helmets. This net features a flexible circular barrier formed by a single strap or a continuous assembly of flexible straps, optionally with hooks, to which angled straps are attached, forming arcs with only one side in contact with the head.The angled straps, which act as cords connecting two points on the circumference of the circular barrier or the inner circumference of the helmet shell without passing through the central intersection node, work with the circular barrier to provide three-dimensional restraint. This optimizes the immediate tensile response for lateral impact resistance and energy absorption through strap deformation, shell deformation, optional elastomeric deformation, and optional impact-absorbing components. Unlike conventional suspensions (e.g., MI, 4-point, 6-point) with straps crossing nodes and exhibiting delayed tension response due to slack or misalignment, the fixed, non-adjustable net ensures efficient energy dissipation. The net can combine straps with varying tensile strengths (e.g.,(elastic or woven), forming angled crosses designed below the crown of the head (e.g., on the forehead). The circular barrier of the strap and the improved contact points enhance comfort and ventilation without the need for padding. The net is removable when hooks are used, is simpler and lighter than the previous technology, and is compatible with non-removable restraint systems (e.g., ratchet headbands, chin straps).

[0013] The fixed, non-adjustable net may optionally include: (i) elastomeric components integrated into angle straps or as connecting straps for improved energy dissipation; (ii) hooks with side slots for attaching the straps and removing the net; (iii) fixed fixing bars for permanent anchoring to the helmet shell; (iv) connecting straps that join the angle straps or anchor the net to the shell; (v) an impact-absorbing component (e.g., pads, inserts) to increase energy dissipation; (vi) adjustment elements (e.g., adjustable headbands, chin straps, etc.) compatible with the fixed net to fit the user's head; (vii) straps with specific tensile properties or elastomeric components to maximize energy absorption and efficiently distribute forces with the helmet shell.

[0014] In particular, this disclosure relates to a multidirectional protective net for a helmet, comprising a circular strap barrier formed by at least one flexible strap, wherein the circular strap barrier is configured to encircle the user's head below its vertex. A plurality of angled straps, each having a first face and a second face opposite the first, form arcs with only one face in contact with the user's head. Each angled strap acts as a rope connecting two points on the circumference of the circular strap barrier or on the inner circumference of the helmet shell, without passing through a central intersection node, and is oriented at an angle of 15-70° (alpha) with respect to a horizontal plane defined by a longitudinal edge of the circular strap barrier.wherein the central intersection node is defined as a cylindrical volume extruded from a circle 1-2 inches in diameter at the geometric center of an elliptical plane within the inner circumference of the helmet shell; wherein the circular strap barrier and angled straps are configured to jointly provide three-dimensional restraint that restricts head movement relative to the helmet shell during impacts, providing an immediate tension response to enhance energy absorption through deformation of the straps and deformation of the helmet shell. This disclosure also relates to a method for manufacturing a multidirectional protective net for a helmet, comprising providing a circular strap barrier formed by at least one flexible strap, the circular strap barrier being configured to encircle the wearer's head below a vertex of the wearer's head;attaching a plurality of angled straps to the circular strap barrier or to a helmet shell by means of fastening, wherein each angled strap comprises a first face and a second face reversed to the first face, and wherein each angled strap forms an arc with only one face in contact with the user's head and acting as a string connecting two points on a circumference of the circular strap barrier or on an inner circumference of the helmet shell without passing through a central intersection node, each angled strap being oriented at an angle of 15-70° (alpha); wherein the circular strap barrier and the angled straps are configured to jointly provide three-dimensional restraint that restricts the relative movement of the user's head within the helmet during impacts, providing an immediate tension response.

[0015] The terms used in this document will have the meanings set out in the Definitions section below, unless the context indicates otherwise.

[0016] “Flexible material”: A substance that is flexible, bendable, and capable of being shaped or molded without breaking or losing its integrity. It can be easily manipulated, stretched, or deformed under force, including static forces such as gravity, and often returns to its original shape or adapts to a new shape depending on its properties. This includes any flexible material such as fabrics, textiles, polymers, elastomers, or composites, used in straps to form the circular webbing barrier, angled webbing, or connecting straps. These materials can conform to the shape of the user's head under static forces, bend through buckles, and tighten without fraying or breaking.Common characteristics of flexible materials include: (1) Flexibility: the ability to bend, twist, or fold without breaking; (2) Tensile Strength: the ability to withstand tensile forces, making it suitable for addressing impact energies; (3) Elasticity (in some cases): the ability to stretch and return to its original shape (e.g., elastic straps); and (4) Durability: resistance to wear and tear despite repeated use.

[0017] “Static Force”: Natural forces present on Earth, including, but not limited to, gravity, which cause a flexible strap to conform to the user's head under static load, without additional external forces.

[0018] “Elastic Belts”: Belts made of flexible materials with the ability to stretch and recover their original shape, including, among others, rubber, silicone or elastomeric polymers, configured to deform elastically during an impact to dissipate energy within the crushing zone, used as angle belts or connecting belts.

[0019] “Longitudinal Edge”: The longitudinal edge of a belt refers to one of the two long, parallel boundaries L1 and L2 that run the length of a flat, elongated belt (as shown in Fig. 1a), defining its width. These edges are typically the outer perimeters of the belt surface, distinguishing its longitudinal sides from its ends or transverse boundaries (the first and second ends of the belt). In the context of a flexible material such as a textile belt, the longitudinal edge is crucial for describing its orientation, shape, and interaction with other components or surfaces. One of the longitudinal edges of a circular belt barrier is called L1. This designation defines the plane formed by the belt(s) in the circular configuration, providing a reference for their spatial arrangement (e.g., horizontal, Fig. 1b). One of the longitudinal edges of an angled belt is called L2.This strap is curved to fit the user's head, and the marked edge serves as a reference for defining the plane formed by the strap (Figs. lc-le). Additionally, Le2 is used to specify the angle at which the angled strap is positioned relative to the circular strap barrier.

[0020] “Arrangement”: The deliberate organization, connection, or combination of straps (and optionally hooks) to form a continuous, perimeter-like structure around the head, functioning as a single structural unit, whether made from one continuous strap or multiple straps connected by hooks and fastening means.

[0021] “Central Intersection Node”: The three-dimensional cylindrical volume is defined as follows: (i) identifying the largest horizontal elliptical plane (16) lying flat within the inner circumference of the hull shell at its base; (ii) locating the geometric center of this elliptical plane, which approximates the center of the hull; and (iii) forming a circle centered on this geometric center with an approximate diameter of 1–2 inches (2.5 to 5 cm), and then extruding the circle perpendicular to the elliptical plane (i.e., vertically upward) as a cylinder from the base plane to the top of the inner surface of the hull shell (Figs. 3a–3b). This volume approximates the region where conventional webbing suspensions (e.g., the cross webbing of 4- and 6-point suspensions) typically interlock at the center of the hull, which the angled webbing of this disclosure is designed to avoid.As used in this document, the term “Central Intersection Node” may also be referred to as “central node” or simply “node”.

[0022] “Circular strap barrier”: A flexible strap or a continuous assembly of flexible straps, optionally including hooks, forms a flexible ring that encircles the head below the apex (e.g., on the forehead), with a longitudinal rim defining a horizontal plane (Hp, Fig. 1b), providing three-dimensional support with angled straps.

[0023] “Angled Strap”: A flexible strap that forms an arc with only one side in contact with the head, acting as a rope (a line segment connecting two points on the circumference of the circular strap barrier or on the inner circumference of the helmet shell without passing through the central intersection node), as opposed to the folded straps or those crossing nodes in conventional suspensions (e.g., MI, 4-point, 6-point). Angled straps are of two types: (1) connected directly to the circular barrier 13a, (2) connected to the helmet shell by means of hangers or tie-down bars, and to the net by means of a connecting strap and / or other angled straps, by means of a fastening means 13b. A longitudinal edge is designated Le2, oriented at an angle of 15–70° (α) with respect to the horizontal plane (Hp) defined by the longitudinal edge of a circular barrier (Lei, Figs. ld–le).“Connecting Straps”: Straps used to stabilize and secure the net assembly (comprising angled straps and the circular barrier) and capable of supporting loads, but always anchored to an angled strap or the circular barrier, even when one end is attached to the helmet shell (Figs. 11a–11c). Connecting straps are distinct from the angled straps and traditional cross straps used in conventional 4- or 6-point helmet suspensions. Unlike angled straps, which avoid the central intersection node to adjust to the user's head, connecting straps can cross this node to maintain net cohesion.Unlike traditional cross straps, whose ends are attached directly to the hull shell (e.g., using hangers) to form the primary suspension structure and bear the main load, connecting straps serve a secondary structural function. This configuration ensures that the connecting straps, whether joining net components or attaching them to the shell, maintain the structural integrity of the net assembly, while clearly distinguishing their secondary function from the primary suspension function of traditional cross straps.

[0024] “Net connecting straps”: These straps fix the angled straps to each other or to the circular strap barrier (20aI); or, fix several angled straps to each other and to the circular strap barrier (20aII), maintaining the configuration and integrity of the net assembly.

[0025] • Example: A net connecting strap can join one or more angle straps together or to the circular strap barrier, acting as a stabilizing component within the net (e.g., a center strap in Figs. 11-11c).

[0026] • Distinction: These straps operate entirely within the net assembly, are not attached to the hull shell, and focus on stabilizing the internal structure of the net. “Housing Connecting Straps”: These straps (20b) connect the net assembly (specifically the circular strap barrier) to the hull shell by means of fastenings and, optionally, by means of fixed coupling bars, providing secondary support and load-bearing capacity.

[0027] • Example: A housing connecting strap has one end fixed to the circular strap barrier and the other to the hull housing, connecting the net to the housing without forming the main suspension (Figs. 4b, l la-l lc).

[0028] • Distinction: Unlike traditional cross straps, where both ends are attached to the hull shell to form the main suspension, the shell connection straps are anchored to the circular strap barrier at one end, integrating the net assembly with the shell.

[0029] “Net”: Fixed and non-adjustable structure (or helmet suspension assembly) formed by the circular strap barrier, angled straps, and connecting straps (where applicable). This structure provides three-dimensional restraint to stop the head from moving toward the helmet shell during impacts, particularly lateral impacts, by means of an immediate tension response, maximizing the crush zone for energy absorption (Figs. 5-11).

[0030] “Hook”: Any structure for attaching one strap to another, to the helmet shell, and optionally to other suspension components, including, but not limited to, clips, buckles, guides, or connectors with multiple attachment points (e.g., side slots for constructing or guiding a circular strap barrier or slots for more than two straps, Figs. 2a-2b). Hooks form part of the circular strap barrier by connecting multiple straps 12, threading a single strap through to form the barrier (similar to an adjustment buckle), or attaching angled straps 13 to the circular strap barrier via side or top slots (14a), allowing the net to be removed from the helmet. Hooks are also designed to create a gap between the circular strap barrier and the inner circumference of the helmet shell, allowing a compression zone 19 (see Fig. 4) around the user’s head.The hooks are distinguished from traditional 18 hooks, which lack side slots for the circular strap barrier.

[0031] "Traditional Hook": Conventional hook currently used on most helmets to connect traditional cross straps for 4 or 6 point suspensions or the like, and adjustment headbands to the helmet shell; and which lacks side slots to secure the straps and form a circular strap arrangement (see Figs. 3a-3b).

[0032] “Support Bar”: Any rigid structure permanently attached to the helmet shell, including, but not limited to, bars, rods, or plates attached to the helmet shell by rivets, screws, welding, or similar means, that have the tensile strength (ability to resist pulling forces) to withstand the impact forces exerted by the net (the assembly of suspension straps within the helmet). Support bars are configured to anchor the straps by means of wraps, buckles, or other fastening methods, facilitating the permanent attachment of a net by anchoring the circular barrier of the strap or net using angled or connecting straps, providing support and stability to the user's head (see Figs. 4b, 11a-11c).

[0033] “Traditional Cross Strap”: Conventional straps that cross at the central intersection node 17 (see Figs. 3a-3b), typically used in traditional four- and six-point suspensions, with both ends attached to the helmet shell, and used herein for comparison with angled and connecting straps. “Elastomeric Component”: Strips of elastomeric or elastic material (e.g., rubber, silicone) integrated into angled strap assemblies or configured as connecting straps, secured by fastening means (e.g., stitching, overmolding), operating under tension to enhance energy absorption (Figs. 8-10).

[0034] “Crush Zone”: The open space between the head and the inner surface of the helmet shell. This space allows the helmet shell and / or suspension system to deform during an impact, preventing the wearer’s head from making direct contact with the shell. By facilitating energy absorption through material deformation, the crush zone helps dissipate impact forces. In Fig. 4, this area is labeled to illustrate how the non-adjustable webbing of the angle strap suspension provides a crush zone for energy dissipation (its size varies depending on the helmet and suspension design).

[0035] “Impact Absorbing Component”: Any element, material or structure (e.g., pads, inserts) integrated into the net to improve energy dissipation during impacts, fixed by means of fastening.

[0036] “Fastening Means”: Any method for securing the straps to other straps, elastomeric components, hooks, fixing bars, shock-absorbing components or to the helmet shell, including, but not limited to, stitching, ultrasonic welding, overmolding, injection molding, adhesives, buckling, mechanical interference, weaving or mechanical fasteners.

[0037] “Retention Systems”: Standard helmet components (e.g., ratchet straps, chin straps, etc.) for securing the helmet to the head, compatible with the net, but not part of it. “Alpha”: Angles in a range of 15 to 70° representing the orientation angle of the angled straps with respect to the circular strap barrier or the horizontal plane of the inner circumference of the helmet shell (Hp, Figs. ld-le).

[0038] “Head vertex”: The highest point of the user’s head, anatomically corresponding to the vertex or crown, generally located at the highest point of the skull when the head is upright. In the context of the helmet suspension assembly, the head vertex serves as a reference point with respect to the central intersection node 17, which is a defined cylindrical volume within the helmet shell. The head vertex is generally located below or near the highest point of the central intersection node on the inner surface of the helmet, and the angled straps 13, 13a, 13b and the circular strap barrier 12 are configured to avoid direct pressure on this point, ensuring comfort and effective load distribution during impacts.

[0039] BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Fig. 1 shows an isometric view of a generic straight strap used in the hull suspension assembly, illustrating the basic structure of the straps before their configuration for specific functions (e.g., circular strap barrier, angled strap, or traditional cross strap).

[0041] Fig. 1b shows an isometric view of a circular belt barrier formed by an arrangement of belts and supports, illustrating the horizontal plane used as a reference for the angle of the angled belts.

[0042] Fig. 1c shows an isometric view of an angled belt in the shape of an arc, illustrating a plane defined by one of its longitudinal edges called Le2. Fig. 1d shows a two-dimensional side view illustrating the angular relationship between a circular barrier belt (12) and an angled belt (13a).

[0043] Fig. shows you an isometric view illustrating the angular relationship between an angled belt (13a) and the circular belt barrier (12).

[0044] Fig. 2a shows an isometric view of a hook (14), represented as a rectangular cuboid with the longer edges oriented vertically and the shorter edges horizontally, showing the front and back faces in two sub-images.

[0045] Fig. 2b shows an isometric view of a hook, identified as 14, with multiple slots for attaching angled straps to the circular strap barrier.

[0046] Fig. 3a shows a bottom view of a helmet shell, illustrating the inner circumference and central intersection node, in contrast to a conventional four-point strap suspension.

[0047] Fig. 3b shows an isometric view of the central intersection node and a conventional four-point strap suspension, omitting the hull shell for clarity.

[0048] Fig. 4a shows a bottom view of an industrial helmet shell, illustrating the crush zone as a reference for the open space between the circular belt barrier and the inner circumference of the helmet.

[0049] Figure 4b shows a two-dimensional side view of a motorcycle helmet shell with the invented suspension system, illustrating the crush zone as a reference concept for the open space within the helmet. Figure 5a shows an isometric view of a first materialization of a helmet suspension assembly, illustrating a network configuration optimized for resistance to side impacts.

[0050] Fig. 5b shows an exploded isometric view of the hull suspension assembly shown in Fig. 5a, illustrating the arrangement of the components.

[0051] Fig. 6a shows an isometric view of a second materialization of the hull suspension assembly, illustrating a net configuration optimized for side impact resistance using a single strap for the circular strap barrier.

[0052] Fig. 6b shows an isometric exploded view of the hull suspension assembly shown in Fig. 6a, illustrating the arrangement of the components.

[0053] Fig. 7 shows an isometric view of a third materialization of the hull suspension assembly, illustrating a non-crossed arc configuration optimized for side impact resistance.

[0054] Fig. 8a shows an isometric view of a fourth materialization of the hull suspension assembly, illustrating a network configuration with eight elastomeric components integrated into angled strap assemblies by fastening, for improved tension-based shock absorption.

[0055] Fig. 8b shows an isometric exploded view of the hull suspension assembly shown in Fig. 8a, illustrating the arrangement of the components.

[0056] Figure 9 shows an isometric view of a fifth embodiment of the hull suspension assembly, illustrating a net configuration with four elastomeric components integrated into angled strap assemblies for improved shock absorption through tension. Figure 10 shows an isometric view of a sixth embodiment of the hull suspension assembly, illustrating a net configuration with elastomeric components configured as connecting straps for improved shock absorption through tension.

[0057] Fig. l ia shows a bottom view of a seventh materialization of the helmet suspension assembly, corresponding to a motorcycle helmet with angled strap suspension, illustrating a net configuration optimized for impact resistance.

[0058] Fig. 11b shows an isometric exploded view of a motorcycle helmet with angled strap suspension, illustrating the arrangement of the components.

[0059] Fig. 11c shows an isometric view of the angled strap suspension for a motorcycle helmet, focusing on the suspension and the fixing bars.

[0060] DETAILED DESCRIPTION OF THE DISCLOSURE

[0061] The helmet suspension assembly, designed for all helmets with an outer shell (e.g., military, sports, industrial, safety, or motorcycle), comprises a circular flexible strap barrier 12 formed by a single strap or a continuous arrangement of flexible straps, optionally with hooks 14, and angled straps 13, 13a, and 13b, forming a fixed, non-adjustable net Nl-7. Each angled strap comprises a longitudinal body with a first face El and a second face F2 opposite the first face, a first end El and a second end E2 distally to each other, and a first longitudinal edge L1 and an opposite second longitudinal edge L2, each extending from the first end El to the second end E2.The following embodiments describe different configurations of the net, each providing three-dimensional support for lateral impact resistance through immediate tensile response, without designating any as preferred to maintain broad applicability. Each embodiment includes variations in materials (e.g., nylon, polyester, elastomers), webbing width (e.g., 2–3 cm), and fastening methods (e.g., stitching, buckles, fixing bars) to enable a person skilled in the art to implement the invention.

[0062] Materialization 1: Circular belt barrier arrangement with 4 crossed angled belts (Figs. 5a-b)

[0063] This embodiment features a circular strap barrier 12 formed by multiple flexible straps of materials such as nylon or polyester, each approximately 2–3 cm wide. These flexible straps are connected to the circular strap barrier 12 via hangers 14 with lateral slots 14a and encircle the head below the head vertex, defined as a cylindrical volume extruded from a circle 1–2 inches in diameter centered on the geometric midpoint of the helmet's inner circumference. 16. Four angled straps 13a, made of flexible materials (e.g., nylon or elastomers, 2–3 cm wide), are attached directly to the circular strap barrier by suitable fastening means, such as stitching or buckles. Each angled strap forms an arc with an orientation angle (alpha) of between 15° and 70°, with only one face in contact with the head.These straps act as cords connecting two points on the circumference of the circular barrier of the strap without passing through the central intersection node and cross below the vertex of the head (e.g., at the forehead) to form a fixed, non-adjustable net, as shown in Figures 5a-5b. This configuration defines the NI net for the present embodiment. Unlike traditional cross straps 15 (see Figure 3), anchored at both ends to the helmet shell by traditional hooks 18, the angled straps provide an immediate tensile response to lateral impacts. Figure 5b shows an exploded view of the component arrangement. The NI net enhances head retention and energy absorption through deformation of the strap and shell, with variations including elastic straps or direct stitching to the barrier.

[0064] Materialization 2: Circular belt barrier with a single belt and 4 crossed angled belts (figs. 6a-b)

[0065] This embodiment features a circular strap barrier 12 formed by a single flexible strap, made of materials such as nylon or polyester, approximately 2–3 cm wide. The strap is inserted into hooks 14, configured as buckle-type guides with lateral slots 14a, and encircles the head below the apex. Four angled straps 13a, made of flexible materials (e.g., nylon or elastomers, 2–3 cm wide), are attached directly to the circular barrier using suitable fastening methods, such as stitching or buckles. Each angled strap forms an arc with an orientation angle (alpha) of between 15° and 70°, with only one face in contact with the head. These straps act as cords, connecting two points on the circumference of the circular barrier without passing through the central intersection node, and cross below the vertex of the head (e.g., on the forehead) to form a fixed, non-adjustable net, as illustrated in Figs. 6a and 6b.This configuration defines the N2 net for the present materialization. Unlike traditional cross straps 15 anchored at both ends to the hull shell, the angled straps provide an immediate tension response to lateral impacts. Fig. 6b shows an exploded isometric drawing illustrating the single strap threaded through the hangers and the attachment of the angled straps. The N2 net absorbs energy through deformation of the strap and the shell, and the hangers allow for net removal. Variations include elastic straps or alternative attachment methods (e.g., adhesives). Materialization 3: Circular strap barrier arrangement with 4 non-crossed angled straps (Fig. 7).

[0066] This materialization features a circular strap barrier 12 formed by multiple flexible straps, made of materials such as nylon or polyester, each approximately 2–3 cm wide. The circular strap barrier is connected by hooks 14 with lateral slots 14a and encircles the head below the apex. Four angled straps 13a, composed of flexible materials (e.g., nylon or elastomers, 2–3 cm wide), are attached directly to the circular strap barrier by suitable fastening means, such as stitching or buckles. Each angled strap forms an arc with an orientation angle (alpha) of between 15° and 70°, with only one face in contact with the head. These straps act as cords connecting two points on the circumference of the circular strap barrier, without passing through the central intersection node.The angled straps are arranged vertically at varying heights and do not cross each other, together forming a fixed, non-adjustable net, as illustrated in Fig. 7. This configuration defines the N3 net for the present embodiment. Unlike traditional crossed straps, the non-crossed angled straps provide an immediate tension response to lateral impacts. The N3 net enhances head retention and energy absorption through deformation of the strap and shell, with variations including elastic straps or alternative attachment methods (e.g., adhesives).

[0067] Materialization 4: Angled Belt Suspension with 8 Elastomeric Components (Figs. 8a-b)

[0068] This embodiment features an angled strap suspension comprising a circular strap barrier 12, formed by multiple flexible straps of materials such as nylon or polyester, each approximately 2–3 cm wide. The circular strap barrier is connected by hooks 14 with lateral slots 14a and surrounds the head below the vertex. The angled straps 13a, also made of flexible materials (e.g., nylon, 2–3 cm wide), include eight elastomeric components 22 (e.g., rubber or silicone strips, 1–2 cm wide), which are integrated into the straps by fastening, such as stitching or overmolding. Each angled strap 13a forms an arc with an orientation angle (alpha) of between 15 oand 70°, with only one face in contact with the head. The straps act as cords connecting two points on the circumference of the circular strap barrier, without passing through the central intersection node, and cross below the vertex of the head (e.g., at the forehead) to form a fixed, non-adjustable net, as shown in Figs. 8a and 8b. This configuration defines net N4 for the present embodiment. Unlike traditional crossed straps 15, the angled straps provide an immediate tension response to lateral impacts. Fig. 8b shows an enlarged view of the component arrangement. The elastomeric components 22 enhance energy dissipation through deformation, operating in tension during lateral impacts, complementing the deformation of the strap and housing within the crush zone 19. Variations include different elastomeric materials (e.g.silicone, polyurethane) or fixing methods (e.g., adhesives).

[0069] Materialization 5: Angled belt suspension with 4 elastomeric components (Fig. 9)

[0070] This embodiment features an angled strap suspension comprising a circular strap barrier 12 formed by multiple flexible straps, made of materials such as nylon or polyester, 2–3 cm wide, connected by hooks 14 with lateral slots 14a, encircling the head below the vertex. The angled straps 13a, made of flexible materials (e.g., nylon, 2–3 cm wide), include four elastomeric components 22 (e.g., rubber or silicone strips, 1–2 cm wide), integrated into the angled straps by fastening (e.g., stitching or overmolding). Each angled strap 13a forms an arc with an orientation of 15 to 70° (alpha), with only one face in contact with the head, acting as a rope connecting two points on the circumference of the circular strap barrier without passing through the central intersection node. These angled straps cross below the vertex of the head (e.g.(at the forehead), forming a fixed, non-adjustable network, as shown in Fig. 9. This configuration defines network N5 for the present embodiment. Unlike traditional cross-belts 15, the angled belts 13a provide an immediate tension response to lateral impacts. Elastomeric components 22 enhance energy dissipation through deformation, complementing the deformation of the belt and housing within the crush zone (element 19). Variations include different elastomeric materials or fastening methods.

[0071] Materialization 6: Angled Belt Suspension with Elastomeric Components as Connecting Belts (Fig. 10)

[0072] This embodiment features an angled strap suspension comprising a circular strap barrier 12, formed by multiple flexible straps of materials such as nylon or polyester, each approximately 2–3 cm wide. The circular strap barrier is connected by hooks 14 with lateral slots 14a and encircles the head below the vertex. Angled straps 13a, made of flexible materials (e.g., nylon, 2–3 cm wide), are attached directly to the circular barrier 12. Each strap forms an arc with an orientation angle (α) of between 15° and 70°, with only one face in contact with the head, and acts as a cord connecting two points on the circumference of the barrier without passing through the central intersection node 17. The angled straps are arranged in a square configuration on the top of the head, with vertices directed toward the forehead, back, and left and right ears.The elastomeric components 22 (e.g., rubber or silicone, 1 to 2 cm wide) are configured as net connecting straps 20aI, each spanning between two angled straps to form the base of a triangular configuration located on the top of the head, as illustrated in Fig. 10. This configuration defines net N6 for the present embodiment. Unlike traditional cross straps 15 anchored at both ends to the helmet shell, the net connecting straps N6 stabilize the angled strap assembly, providing an immediate tension response to lateral impacts. The elastomeric components 22 restrict upward head movement during impacts, enhancing energy dissipation through deformation and complementing the deformation of the strap and shell within the crush zone 19.Variations include different elastomeric materials or configurations (e.g., different numbers of straps).

[0073] Materialization 7: High Impact Angled Belt Suspension (Figs, lla-c)

[0074] This embodiment features a high-impact net N7 comprising a circular webbing barrier 12 formed by a single flexible webbing, made of materials such as nylon or polyester, approximately 2-3 cm wide. The circular webbing barrier 12 encircles the head below the apex, positioned over the nose / eyes at the front and over the ears at the sides. The net N7 includes the following components: (1) angled webbing straps 13b, made of flexible materials (e.g., nylon or elastomers, 2-3 cm wide), connected to the helmet shell by fixing bars 21 or hangers 14, including four straps extending from side to side (ear to ear); (2) angled webbing straps 13a, made of flexible materials (e.g., nylon, 2-3 cm wide), connected directly to the circular webbing barrier, including two straps extending from front to back (from the nose / eyes to the back of the head);(3) net connecting straps 20aI and 20aII, made of flexible materials (e.g. nylon or elastomers, 1 to 2 cm wide), with net connecting straps 20aI comprising two short straps, each of which joins a front-to-back angled strap 13a to the circular strap barrier, and net connecting straps 20aII comprising a center strap extending from front to back, connecting the four side-to-side angled straps 13b to the front and rear of the circular strap barrier to form a spine-like structure; and (4) connection straps to the shell 20b, made of flexible materials (e.g. nylon, 1 to 2 cm wide), running parallel to the outer surface of the circular barrier of the strap and attached to the helmet shell by means of fixing bars 21 at one end only, as opposed to traditional cross straps 15;

[0075] Each angled strap forms an arc with an orientation angle (alpha) of between 15° and 70°, with only one face in contact with the head, and acts like a string connecting two points without passing through the central intersection node. These elements interlock to form a spherical net, as illustrated in Figs. 11a-11c. The N7 net provides an immediate tensile response to lateral and top-of-head impacts, improving head retention and energy absorption by deforming the straps, helmet shell, and elastomeric components within the crush zone. Variations may include different strap materials, quantities, or methods of attachment (e.g., direct stitching or snapping).

[0076] Helmet Net Function: During an impact, the net, which combines straps with varying tensile strengths (e.g., elastic or textile), provides three-dimensional restraint that prevents the head from moving against the helmet shell, especially in lateral impacts. The angled straps 13, 13a, and 13b, which act as ropes bypassing the central intersection node 17, ensure an immediate tensile response, unlike conventional suspensions with straps 15 crossing the nodes, which exhibit a delayed tensile response due to slack or misalignment. This restraint maximizes the crush zone 19 for energy absorption through shell deformation (primary) and strap deformation (e.g.,(via elastic straps), optional elastomeric deformation 22, and optional shock-absorbing components, offering more engineering options than conventional suspensions. Angled crossovers designed below the vertex of the head (e.g., at the forehead) and a circular strap barrier 12 improve stability, comfort, and ventilation without the need for comfort pads. Hooks 14 allow for removal of the net, which is compatible with restraint systems.

[0077] Advantages of the helmet net

[0078] This disclosure simplifies construction, reduces weight, and improves protection compared to conventional suspensions by using a fixed net with a circular webbing barrier 12 and angled webbing 13, 13a, and 13b that act as cords, avoiding the central intersection node 17. The angled webbing provides an immediate tension response to side impacts, unlike webbing that crosses nodes 15 in MI or modern 4 / 6-point suspensions, which exhibit a delayed tension response. The fixed net ensures excellent head retention, and the combination of webbing materials and elastomeric components 22 optimizes energy absorption. The increased contact points and lightweight webbing improve comfort and ventilation without the need for padding, thus reducing cost.The 14 hooks allow for removal, and compatibility with retention systems improves practicality on all helmets with an outer shell.

[0079] The following is a detailed description of the drawings, which illustrate the materializations of the hull suspension system described above.

[0080] Figure 1 illustrates an isometric view of a generic straight strap used in hull suspension assembly, representing the basic structure from which various strap configurations can be derived (e.g., circular strap barrier, angled strap, or traditional cross strap). The strap consists of a longitudinal body with a first end E1 and a second end E2 positioned distally opposite each other. Two longitudinal edges L1 and L2 are shown on opposite sides of the strap, each extending between E1 and E2. These edges define the boundaries of the flat surfaces or faces of the strap, which include a first face E1 and a second face F2, the latter being the reverse of the first.

[0081] Figure 1b shows an isometric view of a circular strap barrier formed by an arrangement of straps and supports, illustrating the horizontal plane used as a reference for the angle of the angled straps. Reference number 12 represents any strap within the strap arrangement that constitutes the circular strap barrier. Reference number 14 is a support that is part of the assembly and connects the straps to each other, allowing the circular strap barrier to be attached to the hull shell and other components. The longitudinal edge 12 of each strap 13 is marked Leí, and the horizontal plane defined by the upper longitudinal edges Leí of all the straps in the circular strap barrier is marked Hp, serving as the reference plane for the orientation of the angled strap.Figure 1c shows an isometric view of an arc-shaped angled belt, illustrating a plane defined by one of its longitudinal edges, labeled Le2. The angled belt is labeled 13, with one longitudinal edge labeled Le2. The plane formed by the longitudinal edge Le2 of the angled belt 13a is labeled Ap, represented as a vertical plane, crucial for defining the angle of the angled belt with respect to the horizontal plane of the circular belt barrier Hp.

[0082] Figure 1d shows a two-dimensional side view illustrating the angular relationship between a circular barrier belt 12 and an angled belt 13a. Reference number 12 represents a belt within the circular barrier, and 13a represents an angled belt. The longitudinal edge of the circular barrier belt 12 is identified as Le1, with a dotted line representing the horizontal plane Hp, adjacent to Le1. The longitudinal edge of the angled belt 13a is identified as Le2, with a dotted line representing the plane Ap, adjacent to Le2. The angle between planes Hp and Ap is identified as alpha (α), indicating the angle designed for tension-based energy absorption.

[0083] The figure shows an isometric view illustrating the angular relationship between an angled belt 13a and the circular belt barrier 12. Reference number 12 represents a belt within the circular belt barrier, reference number 13a represents an angled belt forming an arc, and reference number 14 represents a support connecting the angled belt to the circular belt barrier. The longitudinal edge of the circular belt barrier 12 is identified as Le1, and the longitudinal edge of the angled belt 13a is identified as Le2. The angle formed between the plane (Ap) defined by the longitudinal edge Le2 of the angled belt and the horizontal plane (Hp) of the circular belt barrier is identified as alpha (α), representing an engineering angle (e.g., 15–70°) optimized for energy absorption based on the tension of the angled belt.

[0084] Figure 2a shows an isometric view of a hook 14, represented as a rectangular cuboid with longer edges oriented vertically and shorter edges horizontally, showing the front and back faces in two sub-images. The hook is labeled 14. The front face includes a helmet attachment element, labeled 14c, configured as a protruding connector that engages with the corresponding groove in the helmet shell, labeled 14d, allowing for secure and removable attachment while maintaining the separation between the circular strap barrier and the shell. The back face includes a headband attachment element, 14b, configured as a protruding connector for attaching a suitably sized or head-fitting headband to the inner face of the circular strap barrier. The actual geometry of elements 14b, 14c, and 14d may vary depending on the helmet shell or headband used.Two slots, each labeled 14a, pass through the hook at its opposite ends, configured to hold or guide straps 13, interconnect them and form the circular barrier, or to thread a single strap that forms the circular barrier, similar to an adjustment buckle.

[0085] Figure 2b shows an isometric view of a hook, numbered 14, and multiple slots for attaching angled straps to the circular barrier. The hook includes four slots, each numbered 14a, two of which are located on the top of the cuboid, configured to hold or guide the angled straps 13a, and two slots on each side of the hook, configured to hold or guide the straps 12 of the circular barrier to construct the barrier. The sizes and shapes of the slots are general representations, with geometries varying according to the helmet or suspension design. The helmet attachment elements 14c and the headband attachment elements 14b, as shown in Figure 2a, are general representations, with geometries varying according to the helmet or headband. Figure 3a shows a bottom view of a helmet shell, illustrating the inner circumference and central intersection node, in contrast to a conventional four-point strap suspension.The inner circumference of the housing is represented as an ellipse, identified by the number 16, which represents a flat area at the base of the housing. This ellipse approximates the largest possible ellipse within the inner circumference of the housing to identify the region where conventional straps typically intersect. The geometric center of this elliptical plane defines a circle with an approximate diameter of 1-2 inches, representing the base of the central intersection node 17. A conventional four-point strap suspension is shown, with two straps, each identified by the number 15, intersecting at the central intersection node 17, represented as a circular area from this bottom view. This illustrates how prior art suspensions cross this region, unlike the angled straps 13 of the present invention, which avoid it.Traditional hooks, labeled with the number 18, are used to attach the conventional suspension to the helmet shell, unlike the hooks 14 of this disclosure which include side slots 14a for building or guiding the circular webbing barrier.

[0086] Figure 3b shows an isometric view of the central intersection node and a conventional four-point strap suspension, omitting the hull shell for clarity. The central intersection node, identified as number 17, is represented as a cylindrical volume extruded from a 1-2 inch diameter circle at the geometric center of the elliptical plane 16 at the base of the hull shell to the top of the inner surface of the shell, approximating the region where conventional strap suspensions intersect. Two conventional suspension straps, each identified as number 15, intersect at the central intersection node 17, forming an "X" configuration typical of a four-point suspension, highlighting the contrast with the angled straps 13 of the present invention, which avoid this cylindrical volume.Traditional hooks 18 anchor the conventional suspension, unlike the hooks 14 of the invention. The elliptical plane 16 represents the base plane from which the cylinder of the central intersection node is extruded.

[0087] Figure 4a shows a bottom view of an industrial helmet shell, illustrating the crush zone as a reference for the open space between the circular strap barrier and the inner circumference of the helmet. Reference number 12 represents the straps that form the circular strap barrier, and reference number 14 represents the brackets that secure the straps to the shell. The crush zone, identified as number 19, is represented by a dashed line depicting the lateral open space between the circular strap barrier and the inner circumference of the helmet, illustrating the concept of a lateral crush zone that facilitates energy absorption during impact. Crush zone 19 is a general representation, the size and shape of which vary depending on the helmet design and suspension, and represents only a two-dimensional view of the three-dimensional open space between the head and the suspension.

[0088] Figure 4b shows a two-dimensional side view of a motorcycle helmet shell with the invented suspension system, illustrating the crush zone as a reference for the open space within the helmet. Reference number 12 represents the straps forming the circular strap barrier, reference number 13a represents the angled straps, reference number 20b represents a connecting strap (with one or two straps labeled for clarity), and reference number 21 represents the fixing bars connecting the suspension to the helmet shell. The compression zone 19 is represented by a dotted outline, which represents the open space above, in front of, and behind the head within the helmet, illustrating the concept of a three-dimensional compression zone that facilitates energy absorption during impact.The connecting strap 20b extends from the circular strap barrier to the helmet shell, attached to it and to the fixing bars 21 by a fastening system. It contributes to the compression zone 19 by maintaining the separation between the suspension and the shell in a manner distinct from the separation of the supports 14. The compression zone 19 is a general representation, with a size and shape that vary depending on the helmet and suspension design. It is shown on a motorcycle helmet to emphasize its applicability to different helmet types and the larger, more visible compression zone in such designs. Figure 5a illustrates an isometric view of a helmet suspension assembly (Materialization 1), representing the NI net configuration, optimized for resistance to side impacts. The reference number 12 denotes multiple flexible straps that form the circular strap barrier, encircling the head below its apex.Reference number 14 represents the brackets that interconnect the straps and secure the circular strap barrier 12 to the helmet shell. Reference number 13a identifies angled straps that attach directly to the circular strap barrier 12. These angled straps form arcs with only one side in contact with the head and cross below the central intersection node (e.g., at the forehead), thus creating a fixed, non-adjustable net structure.

[0089] Figure 5b illustrates an exploded isometric drawing of the helmet suspension assembly corresponding to the NI net configuration shown in Figure 5a, highlighting the arrangement of the individual components. Part number 12 indicates multiple flexible straps interconnected by hooks 14 to form the circular strap barrier, which encircles the head below the apex. The hooks 14, equipped with slots (14a), serve to interconnect the straps and secure the suspension assembly to the helmet shell. Part number 13a represents angled straps that are attached directly to the circular strap barrier 12. These angled straps form arcs with only one side in contact with the head and cross below the central intersection node (e.g., at the forehead), contributing to a fixed, non-adjustable net configuration.

[0090] Figure 6a illustrates an isometric view of a helmet suspension assembly (Materialization 2), showing the N2 net configuration, optimized for lateral impact resistance by using a single strap forming the circular webbing barrier 12. This circular webbing barrier 12 is formed by a single flexible strap threaded through a series of hooks 14, configured as slotted buckle-type guides (14a). These hooks secure the strap in position, allowing it to encircle the head below the apex and attach the suspension assembly to the helmet shell. Reference number 13a represents angled webbing, attached directly to the circular webbing barrier 12, forming arcs with only one side in contact with the head and crisscrossing below the central intersection node (e.g., at the forehead) to create a fixed, non-adjustable net.

[0091] Figure 6b illustrates an exploded isometric drawing of the helmet suspension assembly corresponding to the N2 net configuration shown in Figure 6a, highlighting the arrangement of its components. A single flexible strap, threaded through hooks 14, forms the circular barrier of strap 12, which encircles the head below its apex. Reference number 14 indicates hooks configured as slotted buckle-type guides (14a) that direct the strap along the desired path and secure the suspension to the helmet shell. Reference number 13a identifies angled straps attached directly to the circular barrier of strap 12, forming arcs with only one side in contact with the head and intersecting below the central intersection node (e.g., at the forehead), thus forming a fixed, non-adjustable net structure.

[0092] Figure 7 illustrates an isometric view of a helmet suspension assembly corresponding to net configuration N3 (Materialization 3), which features a non-crossing arc configuration optimized for lateral impact resistance. Reference number 12 denotes multiple flexible straps forming the circular webbing barrier, which encircles the head below the vertex. Reference number 14 identifies the brackets that interconnect the straps to form the circular webbing barrier 12 and attach net N3 to the helmet shell. Reference number 13a represents angled straps arranged vertically at varying heights relative to the circular webbing barrier 12. These angled straps form arcs with only one side in contact with the head and are configured to avoid intersecting each other or the central intersection node 17, thus contributing to a fixed, non-adjustable net structure.

[0093] Figure 8a shows an isometric view of a helmet suspension assembly corresponding to net configuration N4 (Materialization 4), illustrating a net structure incorporating eight elastomeric components 22 integrated into angled strap assemblies for improved tension-based shock absorption. Reference number 12 indicates the multiple straps that form the circular strap barrier, which encircles the head below the apex. Reference number 14 identifies the brackets that connect the multiple straps to form the circular strap barrier and secure the suspension assembly to the helmet shell. Reference number 13 represents angled strap assemblies, each composed of one or more straps and elastomeric components 22, attached to the circular strap barrier 12.These angled strap assemblies form arcs with only one side in contact with the head and crisscross below the central intersection node 17, for example, on the forehead. Part number 22 identifies elastomeric components, such as strips of elastomeric or elastic material, integrated into each angled strap assembly 13 by attaching the strap material to each end of the elastomeric component. These components have dimensions similar to the straps to maintain visual and structural consistency and are configured to operate in tension to enhance energy absorption and dissipate impact forces. The illustrated configuration is exemplary, and variations in the quantity and arrangement of straps and elastomeric components are possible, as shown in the following figures.

[0094] Fig. 8b shows an exploded isometric drawing of the helmet suspension assembly corresponding to the N4 network configuration (Materialization 4) shown in Fig. 8a, illustrating the arrangement of the components. Reference number 12 indicates multiple straps that are interconnected by hangers to form the circular strap barrier, which encircles the head below the vertex. Reference number 14 identifies slotted hangers 14a configured to guide and interconnect the multiple straps 12 and secure the suspension to the helmet shell. Reference number 13 represents angled strap assemblies, each composed of one or more straps and elastomeric components 22, attached to the circular strap barrier 12. These assemblies form arcs with only one side in contact with the head and are interconnected below the central intersection node, as at the forehead.Reference number 22 indicates elastomeric components, such as strips of elastomeric or elastic material, integrated into each angled belt assembly 13 by attaching the belt material to each end of the elastomeric component to facilitate connection to the circular belt barrier. The elastomeric components 22 have dimensions similar to the belts for a uniform appearance and are configured to operate in tension to enhance energy absorption and dissipate impact forces. The configuration shown is illustrative, and the order and quantity of belts and elastomeric components may vary in other implementations, as shown in the subsequent figures.

[0095] Figure 9 shows an isometric view of a helmet suspension assembly corresponding to net configuration N5 (Materialization 5), illustrating a net configuration with four elastomeric components integrated into angled strap assemblies to enhance tension-dependent shock absorption. Reference number 12 indicates the multiple straps that form the circular strap barrier, which encircles the head below the apex. Reference number 14 represents the brackets that interconnect the multiple straps 12 to form the circular strap barrier and secure the suspension to the helmet shell. Reference number 13a identifies the angled strap assemblies, each composed of one or more straps and an elastomeric component 22, attached to the circular strap barrier 12.These assemblies form single-sided arcs with contact with the head and intersect below the central intersection node, as on the forehead. Reference number 22 indicates elastomeric components, such as strips of elastomeric or elastic material, integrated into each angled strap assembly 13a by attaching the strap material to one end of the elastomeric component to allow connection to the circular strap barrier. The elastomeric components are similar in size to the straps for a uniform appearance and are configured to operate in tension, enhancing energy absorption and dissipating impact forces during impact. The configuration shown is illustrative; the order and quantity of straps and elastomeric components may vary in other implementations.

[0096] Figure 10 shows an isometric view of a helmet suspension assembly corresponding to net configuration N6 (Materialization 6), illustrating a net configuration with elastomeric components configured as connecting straps to enhance shock absorption by tension. Reference number 12 indicates the multiple straps that form the circular strap barrier, which encircles the head below the apex. Reference number 14 represents the brackets that connect the multiple straps 12 to form the circular strap barrier and secure the suspension to the helmet shell. Reference number 13a identifies angled straps, attached directly to the circular strap barrier 12, forming arcs with only one side in contact with the head and interconnecting below the central intersection node, as at the forehead.The angled straps are arranged in a square configuration on the top of the head, with vertices oriented towards the forehead, the nape of the neck, the left ear, and the right ear in relation to the user's head. Reference number 22 indicates elastomeric components, such as strips of elastomeric or elastic material, configured as connecting straps, each of which extends between two angled straps 13a to form the base of a triangular configuration, with the angled straps forming the sides. These triangular formations are located on the top of the head. Reference number 23 indicates a dotted triangular outline that visually illustrates the triangular configuration formed by each elastomeric component and the two angled straps.The 22 elastomeric components are configured to restrict upward head movement during an impact by operating under tension, resisting the tendency of the strap web to open and preventing the user's head from shifting through the angled straps, while absorbing energy by deformation.

[0097] Figure 1 shows a bottom view of a motorcycle helmet H with an angled strap suspension corresponding to net configuration N7 (Materialization 7), illustrating a configuration optimized for impact resistance. Reference number 12 denotes a single strap forming the circular strap barrier, which encircles the head below its apex and is attached to the helmet H by means of connecting straps 20b and fixing bars 21. Reference number 21 indicates the fixing bars configured to connect the circular strap barrier 12 to the helmet shell H, thereby securing the suspension system.Reference number 13 denotes angled strap assemblies, which include a first set of angled straps 13a connected directly to the circular strap barrier 12 and a second set of angled straps 13b connected to the helmet shell by means of the fixing bars 21 and to the circular strap barrier by means of the connecting straps 20aII. These angled strap assemblies form arcs with only one side in contact with the head and include four straps that extend laterally (from ear to ear) and two straps that extend from front to back (from the nose or eyes to the nape of the neck), interlaced to form a spherical net. Angled strap assemblies 13a and 13b function as ropes connecting two points on the circumference of the circular strap barrier (straps 13a) or the inner circumference of the helmet shell (straps 13b) without crossing the center point, thus improving tensile strength to side impacts.Reference 20aI represents two short connecting straps, each of which attaches an angled strap 13a, from front to back, to the side of the circular barrier 12. Reference 20aII indicates a central connecting strap, extending from front to back, which connects the four angled straps 13b to each other at the front and rear of the circular barrier 12, forming a spine-like structure that reinforces the net. Reference 20b indicates connecting straps parallel to the outer surface of the circular barrier, which attach it to the sides of the helmet shell using the fixing bars 21 and other fastening means, thereby improving lateral stability. Fig. 11b shows an exploded isometric drawing of a motorcycle helmet H with the angled strap suspension corresponding to net configuration N7 (Materialization 7), illustrating the arrangement of the components.Reference number 12 denotes a single strap threaded to form the circular strap barrier, which encircles the head below the central intersection node (front at the nose / eyes, sides at the ears) and is attached to the helmet H by means of connecting straps 20b via fixing bars 21. Reference number 21 represents fixing bars, configured as buckle-type guides, which connect the circular strap barrier 12 to the helmet H shell by means of connecting straps 20b, thereby securing the suspension assembly. Reference number 13 identifies angled strap assemblies, comprising a first set of angled straps 13a connected directly to the circular strap barrier and a second set of angled straps 13b connected to the helmet shell by means of fixing bars 21.These angled straps form arcs with only one side in contact with the head and include four straps extending side to side (ear to ear) and two straps extending front to back (nose / eyes to the back of the head), interlocking to form a spherical net. Angled strap assemblies 13a and 13b act like ropes, connecting two points on the circumference of the circular barrier or the inner circumference of the helmet shell without passing through the center, thus improving tensile strength in side and top-of-head impacts. Part number 20aI represents two short connecting straps, each of which secures an angled strap 13a from front to back to the circular barrier.Reference number 20aII indicates a central connecting strap that runs from front to back and connects the four lateral angled straps 13b to each other and to the front and rear of the circular barrier, forming a spine-like structure that reinforces the net. Reference number 20b identifies connecting straps parallel to the outer surface of the circular barrier, securing it to the sides of the hull shell by means of fixing bars 21 and other fastening means, thus improving lateral stability. The exploded isometric drawing further highlights the arched shape of the straps and their interconnections.

[0098] Figure 11c shows an isometric view of the N7 angled strap suspension (Materialization 7) for a motorcycle helmet, focusing on the suspension and the fixing bars. Reference number 12 denotes a single strap forming the circular strap barrier, which encircles the head below the central vertex and is attached to the helmet H by connecting straps 20b via fixing bars 21. Reference number 21 represents the fixing bars, configured as buckle-type guides that connect the circular strap barrier 12 to the helmet shell H, thus securing the suspension. Reference number 13 identifies the angled strap assemblies, comprising a first set of angled straps 13a connected directly to the circular strap barrier and a second set of angled straps 13b connected to the helmet shell via fixing bars 21.These angled straps form arcs with only one side in contact with the head and include four straps that run side to side (ear to ear) and two straps that run front to back (nose / eyes to the nape of the neck), interlacing to form a spherical net. Angled strap assemblies 13a and 13b act as laces, connecting two points on the circumference of the circular strap barrier (straps 13a) or the inner circumference of the helmet shell (straps 13b) without passing through the center, thus improving tensile strength against impacts to the top of the head and sides. Part number 20aI indicates two short connecting straps, each of which secures an angled strap 13a, running front to back, to the circular barrier 12.Reference number 20aII identifies a central connecting strap, which runs from front to back and connects the four angled straps 13b, which run side to side, to each other and to the front and rear of the circular barrier 12 (on opposite sides), forming a spine-like structure that reinforces the net. Reference number 20b represents connecting straps parallel to the outer surface of the circular barrier 12, which attach it to the sides of the hull shell by means of the fixing bars 21 and other fastening means, thereby improving lateral stability. This figure provides a detailed view of the net's structure.

[0099] The embodiments described herein are presented by way of example and are not intended to be limiting. Those skilled in the art will understand that various modifications, variations, and equivalents may be made without departing from the scope and spirit of the invention, as defined in the appended claims. The features described in connection with any particular embodiment may be combined with those of other embodiments without departing from the scope of disclosure.

[0100] All patents, patent applications, and publications cited herein, as well as those in the accompanying Declaration, if any, are incorporated by reference as if set forth in their entirety. All, or substantially all, of the components disclosed in such patents may be used in the materializations of this disclosure and their equivalents. The details of the patents, patent applications, and publications incorporated herein by reference may, at the applicant's option, be considered as incorporable into the claims during the application process, since the additional limitations on patentability in the claims distinguish any modified claim from the applied prior art.

Claims

CLAIMS What is being claimed is:

1. A multidirectional protective net for a helmet, comprising: a circular strap barrier (12) formed by at least one flexible strap, configured to be fixed to the helmet shell and to encircle the user's head below the vertex thereof; a plurality of angled straps (13a), each having a first face and a second face opposite the first, each angled strap (13a) forming an arc with only one face in contact with the user's head. Each angled strap (13a) acts as a rope connecting two points on the circumference of the circular strap barrier (12) without passing through a central intersection node (17), and oriented at an angle of 15-70° (α) with respect to a horizontal plane (Hp) defined by a longitudinal edge (Lei) of the circular strap barrier (12);wherein the central intersection node (17) is defined as a cylindrical volume extruded from a circle of 1-2 inches in diameter at a geometric center, and perpendicular to a horizontal elliptical plane (16) within an inner circumference of the helmet shell; wherein the circular strap barrier (12) and the angled straps (13a) are configured to jointly provide three-dimensional restraint that restricts head movement relative to the helmet shell during impacts, providing an immediate tension response to enhance energy absorption by deformation of the straps and deformation of the helmet shell.

2. The multi-directional protective net according to claim 1, wherein the plurality of angled straps (13a) is connected to the circular strap barrier (12) via fastening means.

3. The multi-directional protective net according to claim 1, wherein the circular strap barrier (12) includes one or more hangers (14) with side slots (14a) configured to (i) connect multiple flexible straps or thread a single flexible strap to form the circular strap barrier (12), or (ii) fix the angled straps (13a) to the circular strap barrier (12), the hangers (14) being further configured to allow the circular strap barrier (12) to be removed from the helmet housing.

4. The multidirectional protection net according to claim 1, further comprising elastomeric components (22) integrated with the angle straps (13a) and functioning as connecting straps, wherein the elastomeric components (22) are made of an elastic material and are attached to the angle straps (13a) by means of fastening means.

5. The multidirectional protective net according to claim 1, wherein the angled straps (13a) comprise a combination of elastic straps and textile straps with different tensile strengths, forming angled crosses designed below the vertex of the head to optimize energy dissipation and head retention.

6. The multidirectional protection net according to claim 1, further comprising one or more shock-absorbing components attached to one or more of the angled straps (13a), the shock-absorbing components being configured to deform at the moment of impact to dissipate energy.

7. The multidirectional protection net of claim 3, further comprising one or more shock-absorbing components attached to one or more of the hangers (14), the shock-absorbing components being configured to deform upon impact to dissipate energy.

8. The multidirectional protective net according to claim 1, wherein the circular strap barrier (12) is adapted for integration with helmet retention systems, including ratcheting headbands or chin straps, to secure the helmet to the user's head while improving ventilation and comfort without the need for padding.

9. The multidirectional protection net according to claim 1, wherein one or more angled straps (13a) comprise one or more elastomeric components.

10. A method for manufacturing a multidirectional protective net for a helmet, comprising: providing a circular strap barrier (12) formed by at least one flexible strap, configured to encircle the user's head below the vertex thereof; attaching several angled straps (13a) to the circular strap barrier or to the helmet shell by means of fastening devices, wherein each angled strap comprises a first face and a second face opposite the first, and wherein each angled strap forms an arc with a single face in contact with the user's head and acts as a rope connecting two points on a circumference of the circular strap barrier or on an inner circumference of the helmet shell without passing through a central intersection node, each angled strap being oriented at an angle of 15-70° (alpha);wherein the circular strap barrier (12) and the angled straps (13a) are configured to cooperatively provide a three-dimensional restraint; the relative movement of the user's head inside the helmet during impacts, by providing an immediate stress response.

11. The method of claim 10, further comprising the integration of elastomeric components (22) with the angle belts (13a), the elastomeric components (22) being formed of an elastic material and functioning as connecting belts, wherein the elastomeric components (22) are fixed to the angle belts (13a) by means of fastening means.

12. The method of claim 10, further comprising fixing the circular strap barrier (12) to the helmet shell by means of hangers (14) with side slots (14a), allowing the net to be removed and maintaining a crushing zone to dissipate energy.

13. The method of claim 10, wherein one or more angled straps (13a) comprise one or more elastomeric components.

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