The invention relates to an impact protection structure, in particular for a helmet, to absorb kinetic energy during an impact, in particular a fall, comprising a plurality of cells arranged next to one another, wherein each cell has a hollow interior (1), which is delimited by at least one side wall (2), wherein cells adjoining one another have at least one common side wall (2), wherein the interior (1) and the side walls (2) run from an outer side (3) of the impact protection structure to an inner side (4) of the impact protection structure opposing the outer side (3), wherein at least one side wall (2) of a cell has at least one recess (5).

The helmet uses a new fastener to fasten a cage to the helmet shell allowing sides of the cage to be mounted directly against the shell, reducing the width of the shell on each side. A ball is attached to a portion of a bar of the cage to act as a limit stop precluding movements of the cage with respect to the helmet. A chin bar is fastened to the helmet at two points on each side of the shell. The shell is molded with recessed portions designed to receive the two branches of the chin bar on each side where they will be fastened to the shell so that the outer surfaces of the chin guard are flush with the shell at the locations of attachment to provide a smooth transition and reduce weight. An adjustment device to adjust the fit of the helmet to the user includes a star wheel on each side of the helmet attached to an arcuate flexible strip extending rearwardly around the occipital area of the skull. A sliding mechanism attached to the strip allows the strip to be moved forward and backward to allow it to be tightened or loosened, respectively, with respect to the player's head. A ratcheting lateral adjustment device is also disclosed.

An impact attenuation system comprises an aluminum honeycomb sheet having a top surface and a bottom surface. The aluminum honeycomb sheet defines a plurality of approximately hexagonally shaped cells. The bottom surface defines a single sheet of contiguous cells and the top surface defines two or more islands of contiguous cells separated by one or more slits. At least a portion of one or both of the top surface and bottom surface may be covered by a polymer skin. The polymer skin may comprise carbon fibers and/or fiberglass.

The invention relates to a multi-step method with a number of processes and sub-processes that interact to allow for the selection, design and/or manufacture of a recreational sports helmet for a specific person wearing the helmet. Once the desired recreational sports helmet is selected, information is collected from the individual wearer regarding the shape of his/her head and information about the impacts he/she has received while participating in the activity. The collected information is processed to develop a bespoke energy attenuation assembly for use in the recreational sports helmet. The energy attenuation assembly includes at least one energy attenuation member with a unique structural makeup and/or chemical composition. The energy attenuation assembly is purposely engineered to improve comfort and fit, as well as how the helmet responds when an impact or series of impacts are received by the recreational sports helmet.

The full-face helmet system comprises a full-facemask that combines the strength of a facemask frame and a reinforcement layer to allow for improved visibility, safety and impact performance, while reducing weight. The full-facemask comprises a reinforcement layer and a facemask frame, the reinforcement layer may be coupled to the external surface or internal surface of a facemask frame. The reinforcement layer may match or substantially match one or more contours of the facemask frame, the reinforcement layer comprises at least one vent opening that is coincident with the player's mouth.

A compressible liner for a helmet or other apparatus subject to shock loading comprises three substantially co-extensive layers mutually engaged by respective cone-like protuberances and cone-like recesses. The intermediate layer is of a different compressibility and provides for de-coupling of the layers in an oblique impact.

A protective headgear for a baseball or softball fielder includes a rigid outer protective shell that has a first side portion, an opposing second side portion and a brim that extends outwardly from a front portion. The outer protective shell has a top opening and a rear opening that is defined between the first and second side portions. As a result, the protective headgear does not completely circumscribe the fielder's head. The protective headgear also includes an impact absorption material disposed along an inner surface of the outer protective shell and also an inner cap to be worn beneath the outer protective shell. The inner cap is formed of a breathable material and can be in the form of a skull cap.

An impact-absorbing helmet for reducing brain trauma includes an inner shell and an outer shell. The inner shell has a bottom and a front that are open. The bottom is configured to insert a head of a user, positioning the front proximate to a face of the user. The outer shell is complementary to and positioned around the inner shell. The outer shell has an edge that is coupled to a rim of the inner shell so that the inner shell and the outer shell define an interior space. A plurality of first springs is positioned in the interior space. Each first spring is coupled to and extends between the inner shell and the outer shell. The first springs are configured to reduce transfer to the inner shell of a force applied to the outer shell.

Helmets and methods for manufacturing a helmet are described. An example helmet includes a shell and a shock absorbing liner attached to the shell. The shock absorbing liner includes a cavity. The helmet a shock absorbing insert formed of a material different than the material of the shock absorbing liner. The cavity is configured to retain the shock absorbing insert.

Provided is an improved multi-layer safety helmet comprising: a lower buffer portion worn on the user's head; and an upper buffer portion coupled to an upper portion of the lower buffer portion, wherein an impact applied from the outside is firstly absorbed by the upper buffer portion and is secondly absorbed by the lower buffer portion.