Abstract: Novel methods and systems for acoustic proofing are disclosed. A sound proof helmet can be designed by optimizing several layers of different materials, thickness, and physical properties. The thickness of the layers can be smaller than the wavelength of the sound waves which are meant to be reduced.

Abstract: A new concept in cranial protection, is a device of individual protection with the purpose of protect the user's head against impact and decelerations. The Cephalic Protection Cell must be used with the objective of avoid direct injuries caused by impact and indirect injuries caused by deceleration, resting and, at the same time, improving the amount of time in which a contact strength is applied to the head, preventing, this way, localized injuries (by impact) or spreaded injuries (by deceleration) in the brain and in other internal structures of the cranium, and also regarding its hability to preserve the cervical spine, thanks to its less mass.

Abstract: Fabrication of ballistic resistant fibrous composites having improved ballistic resistance properties and retained or improved ballistic penetration resistance properties. The composites are formed from high tenacity fibers having a tenacity of at least about 33 g/denier at ambient room temperature after being modified by a plasma treatment or by a corona treatment, without tenacity loss due to said treatments.

Abstract: A protective helmet includes a head cap, which surrounds and moves with a wearer's head, and an outer shell which surrounds the head cap. The outer shell is movable both radially and circumferentially relative to the head cap. An energy absorbing flexible liner is located between the head cap and the outer shell. The liner is attached to the outer shell and the head cap so that neither the head cap nor the head of the wearer is otherwise attached to the outer shell. The liner establishes a preset initial relative position and spacing between the head cap and the outer shell and compliantly absorbs energy imparted to the outer shell during a helmet impact to enable the outer shell to move relative to the head cap during the helmet impact and to be returned to the initial relative position with the head cap following the impact.

Abstract: A shell-less helmet is provided with resilient material and a stainless steel interior member to protect the individual from head trauma while at the same time preventing the use of the helmet as a weapon due to the resilient helmet outer layer.

Abstract: A protective helmet which employs an inner shell, an outer shell, and dampeners positioned between the inner and outer shells which facilitate rotational movement between the inner and outer shells. The dampeners also provide shock absorption to counter the rotational acceleration caused by an impact to the helmet.

Abstract: An outer hard-shell casing for a protection device that has airspace between the outer shell and inner shell or surface. This outer shell is designed to generate a shock wave during an impact to the casing. The generated shock wave then reflects off of the inner surface or shell. The reflected shock wave then dissipates along the air channel and out of the exit vents before it can be absorbed into the inner hard shell of the base or other protection device.

Abstract: A sports helmet includes recessed insert surfaces on its exterior to accommodate shock absorbing inserts disposed therein. The helmet may include, for example, five recessed insert surfaces, a front recessed surface, a top recessed surface, a rear recessed surface, and two side recessed surfaces. The inserts may be disposed into the recessed surfaces to create a substantially uniform outer helmet shape. A uniform finish may cover the exterior of the helmet. The shock absorbing inserts, when used on a person receiving a force to the helmet's insert, will absorb at least a portion of the force, limiting the force's impact on the wearer's brain. The helmet may, for example, help prevent concussions and other brain injuries in sport participants.

Abstract: A method of improving an impact-protective property of a conformable substrate is provided. The method includes positioning a central core adjacent the conformable substrate. The central core includes a plurality of rigid plates. A first of the plates is joined by at least one hinge to a second of the plates.

Abstract: A concussion indicator that may easily be applied to a helmet is provided. The concussion indicator may visually or audibly provide indicators relating to impacts creating accelerations of the helmet that likely cause a concussion. In some embodiments, three separate indicators may be used within a single base; each indicator is configured to indicate at impacts relating to different concussion grades. A rear of the base is attachable to a surface such as an interior or exterior of a helmet. Upon a concussion triggering acceleration, the concussion indicator will indicate that a concussion is likely. This display may be seen or heard by observers if the indicator is on an exterior of the helmet, and by the user or someone who removes the user's helmet if it is on the inside of the helmet.

Abstract: Disclosed herein is a composite structure for deflecting and spreading kinetic energy transmission after various types of impacts utilizing foam structures having graded properties. The structure has a first composite layer, composed of a discrete reinforcement and a continuous binder. The helmet receives contact of an object that transfers kinetic energy to a first composite layer. The helmet uses a second composite layer adjacent to the first composite layer designed such that the second composite layer compresses and expands into an expansion zone in the second composite layer. The second composite layer has expansion structures with a graded modulus such that the material at the tip of an expansion structure has a low modulus and the modulus in the expansion structure increases as it moves from the tip to the base of the expansion structure.

Abstract: A head covering or helmet pads are removably attached to the outer surface of an existing sport's helmet. The pads are constructed to conform to the contours of the outer surface of the helmet. The pads are made from layers of thermoplastic material structured to absorb both shock and acoustic waves that may cause concussive type injuries. The thermoplastic may be an open-cell foam material selected from the group consisting of neoprene, polyethylene, silicon, urethane, silicon/urethane blend.

Abstract: A helmet, which includes an injection molded shell having an inner surface and an outer surface, the injection molded shell including a first main body portion and a second main body portion, wherein the first and second main body portions are formed of a first material; and a first molded hinge portion formed intermediate the first and second main body portions, the molded hinge portion adapted to allow the first main body portion and the second main body portion to move relative to each other.

Abstract: A safety helmet includes damping elements for example made from expanded polystyrene added onto a shell made from an elastically deformable material. The whole of the surface, facing the shell, of the damping elements arranged along the periphery of the opening is positioned against the shell to form an inner supporting belt completely in contact with the shell. The helmet is arranged in such a way that a position of the head in the cavity of the helmet causes a deformation of the supporting belt by elastic deformation of the shell according to the morphology of the head, generating permanent tightening of the supporting belt against the head in substantially uniform manner along the supporting belt.

Abstract: In an embodiment, a device for reducing brain and cervical spine injury includes a headpiece sufficiently designed to secure to a user's head, the headpiece having a first attachment member; a support harness sufficiently designed to secure to the user's torso, the support harness having a second attachment member; and a telescoping member having a main tube and a series of progressively smaller diameter tubes nested within each other, wherein the smaller diameter tubes are adapted to extend and compress in a linear plane by the intake and outflow of fluid, wherein the telescoping member has a first engaging member for engaging the first attachment member, and wherein the telescoping member has a second engaging member for engaging the second attachment member.

Abstract: Provided is a protective insert to be received into a pocket of a protective athletic headwear. The protective insert includes a hard outer layer, at least one pliable middle layer, and a pliable inner layer. The hard outer layer includes an arrangement of first openings to enable flexing of the hard outer layer to decelerate an impact to the at least one protective insert. The at least one pliable middle layer includes at least one arrangement of second openings. The pliable inner layer provides cushioning. The hard outer layer, the at least one pliable middle layer, and the pliable inner layer are sealed such that the second openings form sealed air pockets to absorb and distribute the impact to the outer layer about the at least one protective insert.

Abstract: A helmet is provided which is to be worn on the head of a helmet wearer and can be removed from the head with a comparatively small force. Operation for removing the helmet, including preliminary operation for it, can be performed easily and quickly. A recess-projection engaging mechanism to attach a blockish inside pad to a head protecting cap portion side includes an engaging pin on the inside pad side or head protecting cap portion side, and a notched engaging hole on the head protecting cap portion side or inside pad side. When pulling the inside pad outward from inside the head protecting cap portion at least partly, the engaging pin moves relative to outside the engaging hole through a notch of the engaging hole.

Abstract: A wearable impact reduction device including a first layer, a second layer, a third layer, and a fourth layer. The first layer is located closest to the wearer's body and includes a flexible material configured to conform to the shape of a user's body. The fourth layer is located furthest from the wearer's body and is more rigid than the first layer whereby the fourth layer can distribute an external impact over a region. The second layer is placed between the first layer and the third layer. The third layer is placed between the second layer and the fourth layer. The second layer includes an elastically-deformable material having at least one resilient impression arranged and configured to at least partially compress upon application of a force and to return elastically to its original shape upon removal of the force.

Abstract: Provided is a protective insert to be received into a pocket of a protective headwear. The protective insert includes a hard out plastic, at least one pliable middle layer and a pliable inner layer. The hard outer layer is configured to provide impact-resistance. The least one pliable middle layer has at least one arrangement of openings. Further, the pliable inner layer is configured to provide cushioning. The outer layer, the at least one middle layer and the inner layer are sealed with respect to one another such that the openings form closed air pockets. The air pockets are configured to absorb and distribute an impact to the outer layer about the at least one protective insert.

Abstract: An apparatus for aiding an athlete with heading a ball while protecting the head of the user participating in an athletic activity and in particular soccer players. Designed to resemble the surface of a player's head in structure and smoothness so as not to affect the trajectory of the ball during a header while at the same time absorbing the force from the impact to prevent or minimize concussions in players, especially younger athletes. This present invention is designed with the intention to overcome the rigid guidelines of youth soccer leagues and organizations, and be approved for use in games. Its design does not provide an advantage or disadvantage to the user as it is constructed to replicate a player's unaided head. The objective is that it feels like “second skin” so it will not affect the quality of movement or play.

Abstract: A soft helmet for wear under a hat is described. The soft helmet may have a plurality of inserts configured to fit into pockets on the interior of the soft helmet. The inserts may be placed so as to cover a majority of a wearer's head. To provide protection, the inserts have a top portion that may be a rigid material and a bottom portion that may be an elastomeric material. The soft helmet may not be readably noticeable to viewers of a wearer using the soft helmet. In another embodiment, the soft helmet may be utilized as a standalone hat. The hat may appear to be a normal beanie or baseball cap.

Abstract: A concussion indicator that may easily be applied to a helmet is provided. The concussion indicator may visually or audibly provide indicators relating to impacts creating accelerations of the helmet that likely cause a concussion. In some embodiments, three separate indicators may be used within a single base; each indicator is configured to indicate at impacts relating to different concussion grades. A rear of the base is attachable to a surface such as an interior or exterior of a helmet. Upon a concussion triggering acceleration, the concussion indicator will indicate that a concussion is likely. This display may be seen or heard by observers if the indicator is on an exterior of the helmet, and by the user or someone who removes the user's helmet if it is on the inside of the helmet.

Abstract: A reinforced and impact attenuating helmet comprising a shell configured to receive a head of a wearer of the helmet, the shell comprising an outer surface and an inner surface; a series of linked coils; filler material; wherein the series of linked coils are entirely encased within the filler material to form a reinforcement layer, the reinforcement layer having a first surface and an opposing surface, the first surface of the reinforcement layer generally facing toward the inner surface of the shell, the reinforcement layer being located proximate the inner surface of the shell, forming a basic helmet assembly.

Abstract: The present application provides a helmet. The helmet includes an energy absorbing layer (2) and a sliding facilitator (5). The sliding facilitator is provided on an inside surface of the energy absorbing layer (2). A method of manufacturing the helmet is further provided. The method includes the steps of: providing an energy absorbing layer in the mold, and providing a sliding facilitator contacting an inside surface of the energy absorbing layer.

Abstract: Systems and methods for head impact injury prediction. A computer implemented method is provided for event based injury predictions. The computer implemented method receives an indication of sensor data related to an impact of a user. The received sensor data is compared to previously stored sensor data in a data store. Each instance of the previously stored sensor data is associated with a medical diagnosis. If the received sensor data matches any of the previously stored sensor data based on the comparison, then an injury risk indicator is generated based on at least one of the medical diagnosis associated with the matching previously stored sensor data or an impact history of the user. The generated indicator is presented.

Abstract: A helmet has a ventilated shell, ventilated padding and a ventilated liner of plural cells mounted to the padding for engaging a wearer's head. The liner has top and bottom flexible sheets fused around their perimeter, the bottom sheet having plural round or oval toroidal cells and plural round or oval closed cells, the openings in the toroidal cells extending through the top sheet. Foam at least partly fills each cell. Cells under a crown of the shell are connected in a first circuit with a valve for inflating these cells and a other cells under temporal and occipital portions of the shell are connected in a second inflation circuit with a valve for inflating the second plurality of the cells. Cells under the frontal portion not being inflatable and being substantially filled with foam padding.

Abstract: There is described a safety helmet having an outer shell and at least one layer of shock-absorbing material placed inside it, at least one inlet on the shell and passing at least therethrough, to fluidically connect the outer environment to the helmet inside, and one or more ventilation ducts fluidically connected to the inlet and provided with one or more outflow holes facing the inside of the helmet. The helmet is also has at least one padding layer at least partially permeable to air, and substantially incompressible, or only partially compressible, for the air flow diffusion. Preferably, the diffusion layer is arranged at least below the hole or holes of the ventilation ducts.

Abstract: A helmet, which includes an injection molded shell having an inner surface and an outer surface, the injection molded shell including a first main body portion and a second main body portion, wherein the first and second main body portions are formed of a first material; and a first molded hinge portion formed intermediate the first and second main body portions, the molded hinge portion adapted to allow the first main body portion and the second main body portion to move relative to each other.

Abstract: An energy-absorbing pad structure includes an energy-absorbing pad that is encapsulated by a polymeric film. The polymeric film is sufficiently air-permeable to permit air to escape during rapid compression of the pad structure, such as from a high-speed dynamic impact, but nonetheless is water resistant under ordinary conditions. It is desirable that the polymeric film is made from an elastic polymer. The air-permeability can be provided from a series of perforations such that the film's elastic quality tends to contract the perforations thereby impeding the progress of water through them under normal conditions. The energy-absorbing pad can be a semi-rigid viscoelastic foam.

Abstract: A method of manufacturing a cranial shock absorption system. The method is comprised of forming a first layer of elastomer, positioning a thin layer of material on top surface of elastomer such that the top surface is exposed around the entire exterior of the layer of material, allowing the first layer to partially set, positioning a tubular stem or valve on the first layer adjacent to the layer of material, forming a second layer of elastomer, allowing the first layer and second layer of elastomer to fully set around the thin layer of material, removing the thin layer of material from between the first and second layers of elastomer and then introducing a fluid into the chamber through the tubular stem.

Abstract: The invention relates to a process for the manufacture of a shaped part comprising the steps of—forming a stack by stacking (2) or more sheets comprising mono-layers of unidirectional anti-ballistic fibers and a binder followed by placing the stack in a mould, clamping the stack in the mould with a control member closing the mould—consolidating the stack under temperature and pressure into a curved shaped part. The invention furthermore relates to products obtainable with said process, which are very suitable for use in anti-ballistic applications and include e.g. helmets, curved panels, cones and domes.

Abstract: The headgear has right and left symmetrical earguard assemblies with an earguard pad and protective shell that are detachable from each other. A plurality of detachable head straps join each earguard assembly to prevent separation of the pad and shell of each earguard assembly. The periphery of each protective shell is surrounded and embraced by peripheral wall portions on the pads to align the respective shells on the respective earguard pads in an alignment position. Corresponding engageable protrusions and recesses on the pads and shells also help maintain the alignment position.

Abstract: A lightweight helmet shell includes an inner shell formed from a porous expanded plastic layer, and an outer shell, in which the outer shell is formed from a compressed fiber sheet having an apparent density of 0.15 to 0.7 g/cc and an impact absorbability of less than 300 G. The lightweight helmet shell has excellent breathability, is lightweight, and has improved impact absorbability.

Abstract: Disclosed herein is an energy-absorbing device comprising a first layer; a second layer; the second layer being opposedly disposed to the first layer and in slideablecommunication with the first layer; the first layer and the second layer enclosing a space therebetween; the space being filled with a fluid that has a power law exponent ? of at least about 1.3 when measured in half cell split Hopkinson bar using Equation (3) below: ? ? w ? ma ? ? x = ? ? [ U h ] n = ? ? ? . n ( 3 ) where |?w|max is a maximum shear stress, ? is a shear strain rate, U is a characteristic velocity of the striker wall, h is a thickness of the space, n is a power law dimensional factor that represents an energy dissipating property of the fluid.

Abstract: Helmets for military and other applications that require resistance to high energy fragments and rifle bullets are disclosed. The helmets are fabricated with a combination of ceramic, either as a monolith or as a plurality of discreet pieces, and an inner backing material having a plurality of fibrous layers such as polyolefin and/or aramid fiber layers.

Abstract: This specification discloses an integrally formed safety helmet. A pre-cast hard outer shell is directly filled with Styrofoam particles followed by heating and pressing to form a soft inner shell. The two shells are integrally formed and tightly connected with no space in between. The production procedure includes the steps of: putting a pre-cast hard outer shell in an upper mold; combining the upper mold and a lower mold; heating the molds to soften a compound material outer shell; pressing to squeeze out extra resin in the compound material outer shell; cooling down the molds and injecting Styrofoam particles into the cavity in the molds, foaming, pressing, and lowering the temperature; and removing the molds. The soft inner shell is then integrally formed inside the hard outer shell.

Abstract: A protective helmet (100) comprises a plurality of layers. A fabric layer (200) conforms to a wearer's head, extending around the head from the top of the head to a point above the ears. A first, conforming hard layer (205) follows and is secured to the fabric layer. A second hard layer (210) conforms to and rests on the previous hard layer, but is not attached to it. A fibrous layer (215) is formed over the second hard layer, and a wet settable friable or frangible material layer, e.g., plaster, (220) is applied over the fibrous layer. The friable or frangible material infiltrates the fiber layer and seals it to the second hard layer. While the friable or frangible material is still wet, a mold (222) or tool (not shown) forms a plurality of lines, e.g., hexagonal trenches (225), in the friable material that extend downward toward the fibrous layer. The mold can optionally be left in place or removed after the plaster hardens. Next, a surface layer (230) of resin is applied over the outside of the layers.

Abstract: The present invention covers a hockey helmet for receiving a head of a player. The helmet comprises an outer shell made of first and second materials having respective first and second flexibilities.

Abstract: A resilient shock-absorbing device includes an absorber body having a first absorber layer including a plurality of longitudinal first outer tube halves heat-sealed to each other and each having two transversely opposed first longitudinal ends contacting respectively adjacent first longitudinal ends of two adjacent first outer tube halves, and a plurality of first heat-seal seams each interconnecting two adjacent first longitudinal ends that contact each other, and a second absorber layer including a plurality of longitudinal second outer tube halves heat-sealed to each other and each having two transversely opposed second longitudinal ends contacting respectively adjacent second longitudinal ends of two adjacent second outer tube halves, and a plurality of second heat-seal seams each extending longitudinally and interconnecting two adjacent second longitudinal ends that contact each other. A plurality of first and second foam members are respectively filled in the first and second outer tube halves.

Abstract: A fixing structure for safety helmet fastening strap, including a frame body mounted under a bottom of a helmet shell. The frame body has multiple fixing seats each of which is formed with a passage and an opening through which a fastening strap can pass. The fixing seat has arms extending from the fixing seat. The fixing seats are securely connected with the frame body with better load capability. Accordingly, the fixing seats can bear the extrusion force of the injection molded foam material without deflection or displacement. The helmet shell, the frame body and the fixing seats are bonded with a foam material filler to together form an integrated body. The arms of the fixing seats help the fixing seats and the frame body to hold the foam material filler.

Abstract: A body protecting device for wearing by a user comprising an array of energy absorbing cells, wherein each cell comprises a tube, and wherein substantially each tube has a side wall which is near or adjacent to the side wall of at least another tube, and wherein substantially each tube is configured such that the orientation of the tube is substantially maintained when a load is applied parallel to the axis of the tube.

Abstract: A vibration reducing headgear assembly including a circumferential band and a plurality of straps extending from the band to define a dome structure, each strap including vibration reducing material including at least a first elastomer layer and a reinforcement layer comprising a high tensile strength fibrous material.

Abstract: An energy-absorbing pad structure includes an energy-absorbing pad that is encapsulated by a polymeric film. The polymeric film is sufficiently air-permeable to permit air to escape during rapid compression of the pad structure, such as from a high-speed dynamic impact, but nonetheless is water resistant under ordinary conditions. It is desirable that the polymeric film is made from an elastic polymer. The air-permeability can be provided from a series of perforations such that the film's elastic quality tends to contract the perforations thereby impeding the progress of water through them under normal conditions. The energy-absorbing pad can be a semi-rigid viscoelastic foam.

Abstract: A helmet system that employs an outer shell and a unitary inner shell formed with compatible grooves and ridges respectively. The outer shell is formed with a switch. The outer shell and inner shell are further secured together via magnetic force or a system of springs and levers in conjunction with the switch that allows for a user of the helmet system to seamlessly remove the outer shell through either a set amount of breakaway force or by using the switch.

Abstract: A pad (10), a plurality of which can be positioned in a helmet (21) or the like for comfort and protection, includes a first generally rectangular fabric material (11) having truncated corners (25). A first generally rectangular foam material (12) having truncated corners (24) includes a top surface, a bottom surface, and side surfaces (18), the top surface being attached to the first fabric material (11). A second generally rectangular foam material (14) having truncated corners (22) includes a top surface, a bottom surface, and side surfaces (19) having a scallop (23), the top surface being attached to the bottom surface of the first foam material (14). A second generally rectangular fabric material (16) having truncated corners (22) and sides having a scallop (23) is attached to the bottom surface of the second foam material (14). The side surfaces (18, 19) of the first and second foam materials (12, 14) are exposed.

Abstract: An apparatus for use with a cap includes a rigid liner that is secured to an interior or exterior of the cap to provide impact protection over a portion of the forehead region, crown and temple area. An absorbent liner is preferably included if the cap does not include an interior liner. The absorbent liner absorbs perspiration from the brow of the wearer. An optional energy attenuating liner can also be included as an inner layer that is disposed adjacent to the rigid liner and intermediate the head of the wearer to more safely distribute kinetic energy. The energy attenuating liner can include a material that provides single-use only or multiple-use capability. The rigid liner and other components are either permanently attached to the cap or they may be detachably-attachable with respect to the cap or with respect to a remainder of the apparatus and replaced, as desired. Any preferred material may be used for any component part of the protective shield for a cap.

Abstract: Headgear of the type having an outer layer and a relatively flexible inner layer includes a belt which extends around the inner layer within the outer layer, and a tensioning device which can tension the belt causing the belt to urge the inner layer inward away from the outer layer and against the helmet wearer's head. Preferably, the tensioning device includes a chinstrap assembly releasably fastened to the front of the helmet.

Abstract: A bicycle helmet has a body with a concave inner surface configured to permit the helmet to fit a user's head. The body has a first section with a first density and a second section with a second density different from the first density. A reinforcement structure is disposed in the body, wherein the reinforcement structure engages the first and second portions of the body.

Abstract: The present invention provides pads and padding systems for use in protective helmets, and particularly ballistic helmets. Generally, the pad includes a first, outer layer which provides substantial impact resistance and a second, inner layer which provides cushioning and comfort. The pad does not require the use of a moisture-proof, non-perforated, encapsulating layer since both layers provide little resistance to fluid flow. The pad may also include a cover made of moisture-wicking material.

Abstract: A head protection system comprises a helmet shell, a visor mounting for pivotally mounting a visor to the shell to enable the visor to be moved between raised and lowered positions, and a retainer for releasably retaining the visor to the helmet. The system includes a visor adapted for mounting on the shell which comprises a substrate of transparent thermoplastic material and a backing substrate comprising a plurality of layers of high performance, ballistic resistant material. The system may further include a second visor which can be releasably connected to the shell using the same visor mounting and which may have a different construction and primary function.