About: http://webisa.webdatacommons.org/130452429

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	With thin-shelled helmets, neither the foam liner nor the shell is structurally capable of supporting fasteners, such as rivets or screws, that hold chin straps, ear protectors, and the like.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com