Neck brace that inhibits excessive neck movement during impact, yet allows
for a high degree of movement of the wearer's head during normal
operation of the neck brace. May include impact surface(s) that limits
movement of a helmet by contacting an underside of the helmet; bearing
surface(s) configured for bearing on wearer; a structure between impact
surface and bearing surface, sufficiently resilient to transfer impact
loads of the helmet to the impact surface, to the wearer's body; wherein
the impact surface is displaceable towards an adjacent part of the
bearing surface and wherein the structure is configured to permit the
displacement at rates slower than a predetermined rate of displacement
and to resist the displacement if the rate of displacement exceeds the
predetermined rate. May include a pivotal joint between the displaceable
part and remainder of neck brace and impact brake element(s).