Energy absorbing articles

Details Energy absorbing articles Energy absorbing articles

2007-01-09

2007-01-09

Boykin, Terressa (Department: 1711)

Stock material or miscellaneous articles

Composite

Of polycarbonate

C293S120000, C293S122000

Reexamination Certificate

active

10881948

ABSTRACT:
An article comprises a plurality of auxetic structures wherein the auxetic structures are of size greater than about 1 mm. The article also comprises at least one cell boundary that is structurally coupled to the auxetic structures. The cell boundary is configured to resist a deformation of the auxetic structures. An automotive energy absorber comprises a plurality of auxetic structures wherein the auxetic structures are of size greater than about 1 mm.

REFERENCES:
patent: 6117518 (2000-09-01), Cawse et al.
patent: 2004/0056463 (2004-03-01), Marks et al.
patent: 2004/0094975 (2004-05-01), Shuler et al.
“Foam Structures With Negative Poisson's Ratio” By Roderic Lakes, University of Wisconsin adapted from Science, 235, 1038-1040.
Auxetic Materials: the positive side of being negative, by K. E. Evans and K. L. Alderson.
Kenneth E. Evans et al., “Auxetic Materials: Functional Materials and Structures From lateral Thinking!”, Advanced materials, vol. 12, No. 9, pp. 617-628, 2000.
Roderic Lakes, “Foam Structures With a Negative Poisson's Ratio”, Science, vol. 235, pp. 1038-1040, 1987.

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