Enveloping helmet of composite structure
AssigneeRegie Nationale des Usines Renault
InventorsAlain Dera, Marcel Goupy
Life of this patent
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Abstract
A protective helmet for use particularly by the rider of a two-wheeled vehicle, having an upper rigid shell joined to a semi-rigid shell of plastic material, the latter having extensions over the regions of a wearer's ears. An interior shock absorbing element is composed of two parts, the upper part extending frontwardly and rearwardly as far as the lower part, which is ring-like in form and extends around the entire lower interior part of the head, to provide protection in the rear.
Claims12
A protective helmet, of composite structure, intended especially for riders of two-wheeled vehicles, the outer part thereof comprising an upper rigid shell obtained by injection of polycarbonates or ABS, or molding of stratified polyesters, and joined to a semi-rigid lower shell of plastic of the plastified PVC type or of injected thermoplastic polyurethane and having extensions over the regions of the ears, such being connected by gluing and/or riveting or clipping, and the interior shock absorbing part consisting of an upper rigid absorber of polystyrene foam of density between 15 and 20 g/dm.sup.3 or a semi-rigid polyurethane foam of density between 30 and 120 g/dm.sup.3, of hemispherical shape, and a lower absorber in the form of a semi-rigid sponge ring, e.g. of polyurethane foam.
Dependencies are inferred from the claim text.