Patent ID: 7673350

Claim:
A safety cap comprising: (a) at least three rigid plates having edges; (b) a foam insert; and (c) a flexible outer covering; wherein the rigid plates are embedded within the foam insert; wherein the rigid plates are aligned end-to-end to form a single layer; wherein each rigid plate comprises an inner surface and an outer surface; wherein the foam insert fully covers the inner and outer surface of each rigid plate; wherein the foam insert comprises at least two foam joints; wherein each foam joint comprises overlapping folds of foam material; wherein the foam joints are comprised of foam and are integral to the foam insert; wherein the foam joints are positioned between the ends of the rigid plates; wherein each rigid plate has two longitudinal edges, and the foam joints are parallel to the longitudinal edges of the rigid plates; wherein the foam joints allow the foam insert to stretch over a wearer's head; and wherein the outer covering limits how far the foam insert stretches.