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US 9,375,041 B2Granted
Energy absorbing system
OwnerDaniel James Plantinventor
Life of this patent
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Abstract
A flexible energy absorbing system including a material coated, impregnated and/or combined with a strain rate sensitive substance is disclosed. The flexible energy absorbing system is formed so as to define repeating adjacent cells, each cell having a re-entrant geometry such that, upon impact, the material locally densifies at the impact site.
Claims21
A flexible energy absorbing system, comprising:
- an active layer, comprising:
- a plurality of adjacent cells,
- wherein each respective cell in the plurality of adjacent cells comprises a vertical cross-section, parallel to the longitundinal direction of the respective cell, with a re-entrant geometry,
- wherein each respective cell in the plurality of adjacent cells comprises a strain rate sensitive material, and
- wherein each respective cell in the plurality of adjacent cells comprises a first opening to a re-entrant recess at a first end of the vertical cross-section of the respective cell.
2 more elements
Dependencies are inferred from the claim text.