Patent ID: 6996856
Filing Date: 2006-02-14
Classification: A42B

Abstract:
1. A helmet for protecting a user's head from impact forces, said helmet comprising, a generally dome shaped shell, said shell being formed from a rigid or semi-rigid material and sized and contoured to cover a surface of said user's head to be protected, said shell including a first portion and a second portion, a plurality of locating recesses formed in a region of said first portion, the recesses being delineated from a next immediately adjacent recess by a web member, said second portion including at least one locating boss positioned to align with a selected one of said recesses when part of said second portion is located substantially in overlying juxtaposition with said first portion, and a fastener coupling the first portion in overlying juxtaposition with the second portion, under a tension selected so that the application of a predetermined minimum force to at least one of said first portion and said second portion enables relative movement of the at least one boss from the selected one of said recesses into a next adjacent recess and the limited movement of said first portion relative to said second portion.