Helmet for sport activities comprising a lattice structure shaped so to accommodate a part of a user head and comprising empty and full portions arranged so that a continuous network of interconnected air channels runs through the lattice structure. The lattice structure comprises on its inner side at least one pocket permeable to air. The pocket is shaped so to accommodate said at least one permeable energy absorbing pad. Method for manufacturing the helmet comprising the steps of providing a lattice structure shaped so to receive a part of a user head and comprising at least one inner pocket, and inserting at least one energy absorbing pad which is permeable to air into said at least one pocket.

Helmet (1) comprising a first protective collapsible portion (2), a second protective collapsible portion (4), and at least one energy absorbing pad (3) permeable to air arranged between said first and second protective collapsible portions (2,4), wherein the first collapsible portion (2) and the second collapsible portion (4) are coupled to each other through one or more mechanical couplings (11-16).

An oblique-impact protection technology member (20) contains a layer (50) of closed cell foam containing a first surface (52), a second surface (54), and a plurality of wells (56) on the first surface (52). The first surface (52) contains a plurality of first surface apertures (58) and the first surface apertures (58) have a square shape. The second surface (54) is opposite the first surface (52) and optionally contains a plurality of second surface apertures (62). Each well (56) corresponds to a first surface aperture (58) and the second surface (54) is substantially parallel; or parallel, to the first surface (52). A helmet (10) and/or a piece of sporting equipment (12) may contain this technology, and a process may manufacture this technology.

A device for reducing impact forces upon a surface includes a base comprising a first contact portion and a transition portion, a contact member disposed between the base and the surface; and a biasing portion disposed between the first contact portion of the base and the surface. At least a first portion of an impact force upon the surface is transferred from the contact member to the base, and a second portion of the impact force is subsequently returned to the surface, the second portion being less than the first portion.

A football helmet comprises a plastic shell having a recess formed in the shell, a shock absorbing pad in the recess and removably connected to the shell, and a floating shell plate removably attached to the shock absorbing pad and further connected to the shell by a tab-slot engagement. The helmet may further comprise an inner liner comprising a shock absorbing element, an inflatable liner element, and a mobility layer disposed between the shock absorbing element and the inflatable liner element, the mobility layer having a plurality of raised elements formed therein to separate the shock absorbing element from the mobility layer thereby forming a gap between the shock absorbing element and the mobility layer, enabling relative movement of the inflatable liner with respect to shock absorbing element.

An impact protecting cap for use under a helmet having a cap portion made from a resiliently deformable material that is fitted directly over the head of an intended user and secured in place by a resiliently deformable band. The cap has its inner surface covered with a plurality of energy absorbing resiliently deformable modules that are evenly distributed across the cap. The modules are made of a pliable material.

A helmet of a layered and segmented design including impact attenuation structures may include a series of layers that individually, or in combination, provide the necessary functions of the helmet. The helmet may feature a layer with a low coefficient of friction to act as a slip layer and slide due to rotational force. The present technology includes impact attenuation structures of predetermined geometries, layers, and materials to allow for an appropriate impact response with a certain degree of control over the buckling process and an adaptive impact response. The present technology of impact attenuation structures may be applicable where impact absorption and controlled buckling is desired, such as bike helmets.

An additively manufactured lattice includes a plurality of symmetrically oriented repeating unit cells. Each of the unit cells is comprised of a vertically oriented tubular structure having a top edge and bottom edge, said tubular structure defined by a circumferential side wall extending from said top edge to said bottom edge. The side wall has a lower portion, an intermediate portion, and an upper portion, with the lower portion terminating at the bottom edge, the upper portion terminating at the top edge, and the intermediate portion positioned between the lower portion and the upper portion. A plurality of spaced legs is included with each unit cell, with each leg formed as an outfolding of the side wall, each outfolding beginning at the side wall intermediate portion and extending progressively further outward through the side wall lower portion to the bottom edge.

There is provided a helmet engageable with a human head portion. The helmet includes an inner shell, an outer shell and a shock absorbing layer. The shock absorbing layer is located between the inner shell and the outer shell, include at least one 3D structure and is defined by a plurality of interconnected 5 surfaces with a plurality of openings defined inbetween. A designing process is provided, including steps of providing a virtual inner shell model and outer shell model of the virtual helmet model, positioning virtual curves on the virtual inner shell/outer shell model, and generating virtual minimal surfaces. A manufacturing process is 10 further provided, including steps of conceiving the virtual helmet model using at least some steps of the designing process and additive manufacturing at least a portion of the helmet.

A helmet features an inner shell, a non-rigid outer shell surrounding the inner shell in outwardly spaced relation therefrom, and a plurality of impact absorbing layers disposed between the shells. Each impact absorbing layer features an envelope, and a plurality of impact absorbing members disposed internally within said envelope. At least one adjacent pair of impact absorbing layers are displaceable relative to one another to enable impact-driven shifting between the adjacent pair, whereby impact energy is absorbed by the impact absorbing members within the impact absorbing layers, and absorbed and/or redirected by the impact-driven shifting between the adjacent absorbing layers. Resiliently stretchable material is attached to the adjacent layers at discrete locations such that, after being stretched by the relative shifting, the material returns to a relaxed state to reset the shifted layers back into a default positional relationship, in which ventilation passages in the absorbing layers are aligned.