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1. (WO2018107286) HELMET WITH SHEAR FORCE MANAGEMENT

Pub. No.:    WO/2018/107286    International Application No.:    PCT/CA2017/051507
Publication Date: Fri Jun 22 01:59:59 CEST 2018 International Filing Date: Wed Dec 13 00:59:59 CET 2017
IPC: A42B 3/12
A42B 3/10
Applicants: HOSHIZAKI, Thomas Blaine
Inventors: HOSHIZAKI, Thomas Blaine
Title: HELMET WITH SHEAR FORCE MANAGEMENT
Abstract:
The present disclosure relates to a cushion for use in a helmet comprising an outer shell for impact with an incoming force, the cushion disposed between the outer shell and a head when the helmet is worn, the cushion comprising: a sealed bladder comprising a flexible membrane; a pad housed within the bladder, said pad comprising a compressible member having interstices open to the exterior of the pad; and a liquid within the interior of the bladder; wherein said pad absorbs at least some of said liquid when uncompressed and expels said liquid when compressed; and wherein the volume of liquid within the bladder is sufficient to allow opposing surfaces of the bladder to be displaced in a shearing motion relative to each other when the cushion is compressed and subjected to shear forces, to decouple shear forces between said helmet and the head.