Protective helmet with removable microphone - is for two=way communication by radio mounted behind inner lining of helmet
Номер патента: DE2730712A1
Опубликовано: 18-01-1979
Автор(ы): Gerd Ing Grad Koelb
Принадлежит: Individual
Опубликовано: 18-01-1979
Автор(ы): Gerd Ing Grad Koelb
Принадлежит: Individual
Реферат: The helmet is provided with a built-in microphone (10) which is removable. It is situated in an opening (8; 11) of the support/holder (6; 2) and is set into position by friction. The invention allows two-way radio conversation. The microphone is completely covered on the inside by the inner lining of the protective helmet. The surfaces adjoining the 2 way microphone in the holder (7, 2) are of an elasticed fabric, as is the holder itself. It could be either rubber or synthetic. The holder (7) clicks into the opening provided (5) on the helmet (1).
Helmet with hearing devices
Номер патента: RU2731229C1. Автор: Луис Фелипе МОРАЛЕС ВЕЛАСКЕС. Владелец: Эфем Акустикс, Ллс. Дата публикации: 2020-08-31.