A helmet to be worn on a head having an annular headband shaped area. The headband shaped area positioned near an upper junction of the ears and the wearer's head. A top area is centered about a top of the wearer's head. A middle area defined between the headband area and the top area. The helmet includes a shell having an inner surface. A first type of subliner elements extend from the inner surface at a location such that the first type of subliner elements are aligned with the headband area. A second type of subliner elements extend from the inner surface at a location such that the second type of subliner elements are aligned with the middle area. A third type of subliner element extends from the inner surface at a location such that the third type of subliner element is aligned with the top area.

A helmet may have an inner liner forming a body of the helmet, the inner liner having a concave inner surface defining a cavity configured for receiving a wearer's head. A plurality of slippage pads are disposed at selected locations on the concave inner surface and connected to the inner liner, the slippage pads having an elongated shape with a length and a width, the length being greater than the width, the slippage pads each defining a number of integrally connected side-by-side tubes each having an opening adapted to be oriented toward the wearer's head, the openings aligned longitudinally along the length of the slippage pads. A plurality of projecting cushioning pads are disposed adjacent to the slippage pads, and have a greater height than the slippage pads and exhibiting a greater deformability than the slippage pads.

A flex cell for absorbing energy from an applied force includes a panel attached to a flex cage. The flex cage is made from a resilient material that allows deformation of the flex cage when a force is applied to the flex cell. The flex cell is attachable to a support surface. In some instances, the flex cell is detached from the support surface when sufficient force is applied to the flex cell.

A structural padding system includes an outer shell, an inner shock absorbing liner attached to the outer shell, and multiple compressible balls coupled with the outer shell and/or the inner shock absorbing liner in such a way that the multiple compressible balls are free to move, relative to the outer shell and the inner shock absorbing liner, when the structural padding system is impacted by an object.

A helmet that includes an outer shell having at least a first outer magnetic member, an inner shell having at least a first inner magnetic member, and padding secured inside the inner shell. The first inner magnetic member is spaced from and opposed to the first outer magnetic member, such that the first inner magnetic member repels the first outer magnetic member. The outer shell is connected to the inner shell.

A hard hat, including an outer shell constructed of material designed to provide protection to a wearer in extreme environmental conditions is provided. In one embodiment, the wall thickness of the outer shell is reduced to minimize the weight and/or bulk of the hard hat.

A helmet includes an outer shell, an intermediate isolator shell, an intermediate damping shell and an inner shell. The helmet further includes inner padding, a plurality of shocks, a plurality of shock mounts and one or more sensors. The helmet can further include an intermediate piston shell, one or more brake pads, a landing padding, and a bottom support. The helmet is configured to provide impact energy absorption and protect a user from brain and/or head injuries. The helmet provides controlled deceleration of the brain so as to prevent or minimize damage to the brain or head of the user. The one or more sensors of the helmet enables an impact detection system to be used concurrently with the helmet. The impact detection system is configured to measure, track, store, and present data collected during each use via a mobile application.

Disclosed is a size adaptive protective headgear including a protective shell including a first and a second front cut extending respectively from a first and second side edge of the protective shell, the first and second front cut enabling expansion and contraction of a front section of the protective shell, and a first and a second rear cut extending respectively from a first and second side edge of the protective shell, the first and second rear cut enabling expansion and contraction of a rear section of the protective shell.

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.

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.