Protective helmet

Details Protective helmet Protective helmet

A - Human Necessities

42

B

2/71

A42B 3/00 (2006.01) A42B 3/30 (2006.01)

Patent

CA 2023088

Described is a protective helmet comprising an impact-resistant outer helmet shell into which a head padding (10) is removably inserted as separate inner helmet shell. The protective helmet is provided with radiotelephone equipment. With the exception of a microphone and possibly an on/off switch and a battery charge check indicator all the parts of the radiotelephone equipment are provided in recesses (32a, 32b, 36-46) provided for them in the head padding (10) at the back at the rear side and at the lower peripheral edge thereof. The two recesses (36, 46) for the two loud-speakers are connected via acoustic passages formed in the head padding (10) to an acoustic cavity provided at ear level. As a result, in the temple and ear region the protective helmet is free from any metal or plastic parts which might cause injury in the event of an impact. In addition, the position of the radiotelephone equipment is chosen so that the equilibrium of the protective helmet is practically not impaired.

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