A helmet comprising an impact mitigating structure
AssigneeHexr Ltd
InventorsJames COOK, Henry NEILSON, Adam LEVY
Life of this patent
Estimating the term…
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.
Claims37
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.
The helmet as claimed in any one of the preceding claims, wherein the first layer and/or the second layer comprises one or more protrusions arranged to facilitate at least partial fracturing of the second layer when the impact mitigating structure is subject to an impact.
The helmet as claimed in any one of the preceding claims, wherein the impact mitigating structure comprises one or more fracture initiating members adjacent the second layer, wherein the one or more fracture initiating members are arranged to facilitate at least partial fracturing of the second layer when the impact mitigating structure is subject to an impact.
The helmet as claimed in any one of the preceding claims, wherein the second layer is shaped to form one or more points and/or lines of weakness in the second layer, wherein the one or more points and/or lines of weakness are arranged to facilitate at least partial fracturing of the second layer.
The helmet as claimed in any one of the preceding claims, wherein the first layer and/or the second layer comprises one or more protrusions and/or the impact mitigating structure comprises one or more fracture initiating members adjacent the second layer and/or the second layer comprises one or more points and/or lines of weakness, wherein the one or more protrusions, the one or more fracture initiating members and/or the one or more points and/or lines of weakness are arranged to define one or more segments of the second layer.
The helmet as claimed in any one of the preceding claims, wherein the first layer comprises a hard membrane between the first layer and the second layer.
The helmet as claimed according to one of the preceding claims, wherein the second layer forms an outer shell that is non-congruent with respect to the first layer, wherein when the impact mitigating structure is subject to an impact, the outer shell is configured to fracture such that at least a portion of the outer shell is able to move relative to the first layer.
The helmet as claimed in one of the preceding claims, wherein the impact mitigating structure comprises an intermediate layer configured to facilitate relative movement between the first and second layers.
The helmet as claimed in one of the preceding claims, wherein the impact mitigating structure comprises a fracturing mechanism that is configured to resist a relative movement between the second layer and the first layer.
Dependencies are inferred from the claim text.