For two-way radio communication where safety gear is required, a lightweight helmet with few protrusions has been designed. The electronics components and power supply are mounted between the inner and outer shells, and resilient padding is used for the lining.
Comfortable, lightweight safety helmet holds radio transmitter, receiver
1964-05-01
Miscellaneous
No indication
English
RADIO COMMUNICATION SYSTEM, AND TRANSMITTER AS WELL AS RECEIVER
European Patent Office | 2017
|NTIS | 1978
|