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US 4,044,399 AGranted
Safety helmet with individualized head-contoured inter-liner
OwnerWilliam G. Mortoninventor
Life of this patent
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OwnerWilliam G. Mortoninventor
Estimating the term…
A substantially rigid dome-shaped shell encloses a deformable cap-like headpiece of uniform thickness. The headpiece conforms to the contour of the wearer's head and cooperates with the shell to define a dome-shaped cavity which is sealed around its bottom portion. The cavity is filled with an expandable plastics foam material which conforms to the contour of the headpiece. In one embodiment, spacer members are positioned within the cavity and extend from the headpiece to the shell for positioning the shell relative to the headpiece. In another embodiment, the shell assembly is spaced within a slightly larger outer shell by resilient energy-absorbing foam pads to form an inter-liner, and the headpiece is formed by stretching a piece of leather with a device having a predetermined contour. In another embodiment, edge roll strip assemblies are attached to the lower edges of the outer shell and provide for removing and interchanging the inter-liner.
An improved safety helmet assembly comprising a substantially rigid dome-shaped outer shell including a pair of depending ear portions, a dome-shaped inner shell disposed within said outer shell, a deformable dome-shaped headpiece of substantially uniform thickness and spaced within said inner shell to define a dome-shaped cavity therebetween, said headpiece being effective to receive and cover the wearer's head and to conform to the contour of the head over the area covered by said headpiece, said headpiece having an outwardly projecting and peripherally extending integral flange portion forming the lower edge portion of said headpiece, means for connecting said flange portion of said headpiece to the corresponding lower edge portion of said inner shell adjacent the bottom of said cavity and cooperating with said inner shell and said headpiece to form a removable inter-liner, an edge roll assembly mounted on the lower surface of each said ear portion of said outer helmet shell and having opposite ends terminating generally adjacent said flange portion of said headpiece, and said edge roll assemblies include resilient foam material adapted to be deformed to provide for conveniently removing and replacing said inter-liner.
An improved safety helmet assembly comprising a substantially rigid dome-shaped outer shell including a pair of depending ear portions, a dome-shaped inner shell disposed within said outer shell, a deformable dome-shaped headpiece of substantially uniform thickness and spaced within said inner shell to define a dome-shaped cavity therebetween for receiving a rigid plastics foam material, said headpiece being effective to receive and cover the wearer's head and to conform to the contour of the head over the area covered by said headpiece, said headpiece having an outwardly projecting and peripherally extending integral flange portion forming the lower edge portion of said headpiece, means for connecting said flange portion of said headpiece to the corresponding lower edge portion of said inner shell adjacent the bottom of said cavity and cooperating with said inner shell and said headpiece to form a removable inter-liner, said headpiece defining a pair of upwardly extending recesses disposed adjacent said ear portions of said outer shell, and edge roll assembly mounted on the lower surface of each said ear portion of said outer helmet shell and having opposite ends terminating generally adjacent said flange portion of said headpiece, and each said edge roll assembly including a strip of flexible liner material covering a strip of resilient foam material and being deformable to provide for removing and replacing said inter-liner.
Dependencies are inferred from the claim text.