Helmet impact attenuation article
AssigneeGentex Corporation
InventorsLeonard P. Frieder, Jr., George D. Hedges, Desmond Walsh, Christopher Kent Barmore
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Abstract
An impact attenuation system comprises an aluminum honeycomb sheet having a top surface and a bottom surface. The aluminum honeycomb sheet defines a plurality of approximately hexagonally shaped cells. The bottom surface defines a single sheet of contiguous cells and the top surface defines two or more islands of contiguous cells separated by one or more slits. At least a portion of one or both of the top surface and bottom surface may be covered by a polymer skin. The polymer skin may comprise carbon fibers and/or fiberglass.
Claims33
An impact liner system for a helmet comprising:
- an impact attenuation article comprising:
- an aluminum honeycomb sheet having a top surface and a bottom surface, the aluminum honeycomb sheet defining a plurality of approximately hexagonally shaped cells,
- wherein the bottom surface defines a single sheet of contiguous cells and the top surface defines a first island of contiguous cells having a first side, a second side, a third side, and a fourth side, the first side being separated from a second island of contiguous cells by a first slit, the second side being separated from a third island of contiguous cells by a second slit, the third side being separated from a fourth island of contiguous cells by a third slit, and the fourth side being separated from a fifth island of contiguous cells by a fourth slit, the first slit intersecting the second slit and the fourth slit, the second slit intersecting the third slit, and the third slit intersecting the fourth slit,
- wherein the first island, the second island, the third island, the fourth island, and the fifth island each include a plurality of contiguous cells, and
- wherein the cells of the contiguous cells are generally hollow.
Dependencies are inferred from the claim text.