Collapse resistant respirator

A - Human Necessities – 62 – B

Patent

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Details

A62B 18/02 (2006.01) A62B 9/00 (2006.01)

Patent

CA 2727166

A respirator including a collapse-resistant means for resisting collapse of the respirator main body due to respiration of a user during use of such a respirator is disclosed. Specifically, in various embodiments, the col-lapse- resisting means may be a deflection member, a stiff-ening material, fastening components configured to apply an outward-facing deflection force when the respirator is worn, or any combination thereof Additionally, a dual ex-halation vent assembly adapted for use in a collapse resist-ing respirator is also disclosed.

L'invention concerne un masque respiratoire comprenant un moyen de résistance à l'affaissement permettant de résister à l'affaissement du corps principal du masque respiratoire causé par la respiration d'un utilisateur lors de l'utilisation d'un tel masque respiratoire. De manière spécifique, dans différents modes de réalisation, le moyen de résistance à l'affaissement peut être un élément de fléchissement, un matériau de raidissement, des pièces de fixation configurées pour exercer une force de fléchissement orientée vers l'extérieur quand le masque respiratoire est porté, ou toute combinaison de ces moyens. De plus, l'invention concerne un ensemble évent d'expiration double adapté à des fins d'utilisation dans un masque respiratoire résistant à l'affaissement.

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