| 摘要 |
FIELD: diver's primary training equipment. SUBSTANCE: training device-aspirator has helmet with semi-mask, valve box and aspiration circuit. Lower part of helmet has resilient double-sided enclosure extending to chest region of individual. Upper edge of inner enclosure has neck collar, lower edges of both enclosures are hermetically sealed. Water sprinkling system and drain pipe are positioned between enclosures. EFFECT: increased efficiency, wider operational capabilities and enhanced reliability in operation. |
