Abstract: A helmet includes an impact mitigating structure (100). The impact mitigating structure includes a first inner layer (102), a second outer layer (104) and a reactive layer (105) positioned between the first inner layer and the second outer layer. The reactive layer includes multiple elements (106) held between the first inner layer and second outer layer. The reactive layer is arranged such that, when the second layer is subject to an impact, the multiple elements of the reactive layer are configured to roll to facilitate movement of the first inner layer and the second outer layer with respect to each other.

Abstract: A helmet includes an impact mitigating structure (100). The impact mitigating structure includes a first inner layer (102), a second outer layer (104) and a reactive layer (105) positioned between the first inner layer and the second outer layer. The reactive layer includes multiple elements (106) held between the first inner layer and second outer layer. The reactive layer is arranged such that, when the second layer is subject to an impact, the multiple elements of the reactive layer are configured to roll to facilitate movement of the first inner layer and the second outer layer with respect to each other.

Abstract: Helmet (1) comprising: an inner layer (3) comprising an outer surface (3a, 31a) and an outer protective layer (2) arranged on the inner layer (3), the outer protective layer (2) comprising an inner surface (2a) facing the outer surface (3a, 31a) of the inner layer (3), wherein under an impact force having at least a tangential force component along an outer surface of the outer protective layer (2), the outer protective layer (2) is configured to move relative to the opposing outer surface (3a, 31a) of the inner layer (3), wherein the inner surface (2a) of the outer protective layer (2) is separated from the outer surface (3a, 31a) of the inner layer by a plurality of spacers (4, 40) for reducing a mechanical locking between the inner layer (3) and the outer protective layer (2) upon said relative movement of the outer protective layer (2) with respect to the inner layer (3).

Abstract: The invention relates to a helmet (1) comprising: —an energy absorbing layer (4), —an outer protective layer (2), —an intermediate layer (3) arranged between the energy-absorbing layer (4) and the protective layer (2), —one or more connector elements (5) extending from the energy-absorbing layer (4) through one or more openings in the intermediate layer (3) to the protective layer (2) and fixedly attaching the protective layer (2) with the energy-absorbing layer (4).

Abstract: The present invention relates to a helmet (1) comprising: a first layer (10) forming an outer surface of the helmet (1), a second layer (30), and a reactive layer (20) sandwiched between the first layer (10) and the second layer (30), whereby said reactive layer (20) comprises a plurality of rigid balls (2) allowing the first layer (10) to roll upon the second layer (30) as soon as the helmet (1) undergoes an impact of an intensity greater than a predetermined threshold.

Abstract: A helmet includes an impact mitigating structure (100). The impact mitigating structure includes a first inner layer (102), a second outer layer (104) and a reactive layer (105) positioned between the first inner layer and the second outer layer. The reactive layer includes multiple elements (106) held between the first inner layer and second outer layer. The reactive layer is arranged such that, when the second layer is subject to an impact, the multiple elements of the reactive layer are configured to roll to facilitate movement of the first inner layer and the second outer layer with respect to each other.

Abstract: The present invention relates to a helmet comprising an impact mitigating structure, the impact mitigating structure comprising: a first layer; and a second layer; wherein one or more of a material property, a mechanical property and a geometrical property of the impact mitigating structure is arranged to, when the impact mitigating structure is subject to an impact, facilitate at least partial fracturing of the second layer such that at least a portion of the second layer is able to move relative to the first layer.

Abstract: A helmet (100) including an impact absorbing layer (102), an outer shell (104) and a connector (106, 114). The outer shell is mounted on the outer surface of the impact absorbing layer. The connector connects the outer shell to the impact absorbing layer, to retain the outer shell on the impact absorbing layer. The connector is also arranged to allow the outer shell to separate from the impact absorbing layer when the helmet is subject to an impact.