Patent ID: 7076811

Claim:
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 apertures formed through a region of said first portion, said second portion including at least one locating opening formed therethrough and positioned to align with a selected one of said apertures when part of said second portion is located substantially in overlying juxtaposition with said first portion, and a fastener sized for insertion through said opening and said selected one of said plurality of apertures to couple the first portion to the second portion, said apertures being delineated from a next immediately adjacent aperture by a web member, said web member having a thickness selected to deform upon the application of a predetermined minimum force to at least one of said first portion and said second portion, and whereby the deformation of a web enables relative movement of the fastener from the selected one of said apertures into a next adjacent aperture and the limited movement of said first portion relative to said second portion.