HELMET FOR RESPIRATORY APPARATUS Russian patent published in 2003 - IPC

FIELD: respiratory equipment. SUBSTANCE: helmet has transparent rigid hood arranged around user's head, elastic sleeve forming hermetically sealing neck obturator, devices for attachment to user's body, inhalation valve connected to air supplying pipe and communicated with atmosphere. Emergency mouthpiece and exhalation valve are located inside helmet and communicated with inhalation valve. Helmet is further provided with plastic saddle-like veil adapted for attachment of helmet to shoulder region and joined to hood by means of quick-release annular connection comprising sleeve serving as sealing layer. Sleeve is circumferentially squeezed so that its free end may be bent onto neck for forming hermetically sealing collar. EFFECT: simplified construction, convenient and safe use, enhanced reliability in operation. 5 cl, 1 dwg