| 摘要 |
An enclosure intended to ensure protection of the head, adapted to be rapidly set out and having a long utilization duration, of the type comprising an insulating, heat resistant and translucent wall, one part thereof at least being elastically deformable and provided with a means of passage for the wearer's head, this means being adjusted to insure the tightness about the wearer's neck, said enclosure being folded in vacuum and further comprising means for sealing the edges of the enclosure, handles permitting the unfolding and regeneration means provided inside said enclosure to deliver oxygen and to fix the carbonic anhydride delivered by the wearer's breath.
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