Protective helmets having energy absorbing liners
OwnerDean Sicking, David Littlefield +1inventors
InventorsDEAN SICKING, DAVID LITTLEFIELD, KENNETH WALLS
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Abstract
In one embodiment, a protective helmet includes an outer shell and an inner liner provided within the outer shell, the liner comprising an energy absorber including a first layer, an opposed second layer, and a plurality of energy absorbing columns provided between the layers, wherein the columns include relatively long columns that are attached to both the first and second layers and relatively short columns that are attached to only one of the first and second layers.
Claims23
A protective helmet comprising:
- an outer shell;
- and
- an inner liner provided within the outer shell, the liner comprising an energy absorber including a first layer, an opposed second layer, and a plurality of energy absorbing columns provided between the layers, wherein the columns include relatively long columns that are attached to both the first and second layers and relatively short columns that are attached to only one of the first and second layers.
An inner liner for use inside an outer shell of a protective helmet, the inner liner comprising:
- an energy absorber including a first layer, an opposed second layer, and a plurality of energy absorbing columns provided between the layers, wherein the columns include relatively long columns that are attached to both the first and second layers and relatively short columns that are attached to only one of the first and second layers.
Dependencies are inferred from the claim text.