CPC A42B 3/0406 (2013.01) [A42B 3/063 (2013.01); A42B 3/30 (2013.01); A42C 2/002 (2013.01)] | 19 Claims |
1. A protective helmet comprising:
an outer shell adapted to distribute impact forces; and
an antenna located at least partially inside the outer shell and configured to transmit a radio signal;
wherein the outer shell defines
a main portion formed of a main material including a main fiber composite including a main matrix material and a main fiber material and
a cut-out portion adjacent to the main portion and formed of a cut-out material including a secondary fiber composite including a secondary matrix material and a secondary fiber material,
wherein the cut-out material defines a lower damping effect on a radio signal compared to the main material, the main matrix material corresponds to the secondary matrix material in its composition, and the secondary fiber material is different from the main fiber material,
wherein the outer shell defines an extension portion and the antenna extends substantially completely along the extension portion, and
wherein the extension portion is spaced from the main portion by at least 10 mm.
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