Impact and explosive force minimization structures

摘要

A helmet including an insert provides the ability of including a highly energy absorbing feature within the insert. The insert includes a structure such as a Bingham plastic which, upon impact, absorbs the energy of the impact by converting from a solid to a liquid. Other energy absorbing features are contemplated. The energy absorption process occurs in one aspect in a nonreversible manner such that once a high enough level impact occurs on the insert, it must be replaced within the helmet. The insert has a fastener which enables it to be replaceable. In this manner, a highly absorbing feature of a helmet can be provided to reduce concussions while not requiring the complete replacement of a helmet.

主权项

1. A helmet comprising:
a shell; a plastic that changes from a solid to a liquid at an impact above a shear threshold, wherein the plastic is created by mixing water, vinyl alcohol, sodium tetraborate and fibers to yield a mixture that is stirred into a homogeneous gel-like substance that hardens into the solid; and a container that stores the plastic, wherein the container is attached to an exterior surface of the shell.