(57) A shock attenuation system for headgear having an outer protective shell, the system
comprising a liner adapted to be secured to the internal surface of the shell, the
liner comprising a series of tubes of elastomeric material extending with their axes
generally parallel to the internal surface of the shell, and generally parallel to
one another. Each tube is open at an end thereof and is elastically deformable under
loads applied against the side of the tube, whereby, with the headgear worn by a wearer
and upon application of an impact load to the headgear, the tubes in the area of impact
deform elastically under the applied load and attenuate the shock upon the wearer
from the applied load.
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