Impact damping material, helmet and panel incorporating the same
AssigneePiren Venture AB
InventorEsa Ervasti
Life of this patent
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Abstract
The present invention relates to a sandwich material (1; 7) for impact damping. The sandwich material (1; 7) comprises a first (2) layer having a low gas permeability and a second (3) layer being compressible and having gas flow channels (5) for internal gas flow communication. The gas flow channels (5) are provided with convolutions adapted to provide a plurality of velocity direction changes of a gas flow in said gas flow channels (5).
Claims7
Sandwich material (1) for impact damping, comprising a first (2) layer having a low gas permeability and a second (3) layer being compressible and having gas flow channels (5) for internal gas flow communication, wherein said gas flow channels (5) are provided with convolutions adapted to provide a plurality of velocity direction changes of a gas flow in said gas flow channels (5), thereby converting kinetic energy in the gas to heat energy.
Dependencies are inferred from the claim text.