Respirator filter canisters and method of filling same

A - Human Necessities – 62 – B

Patent

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A62B 23/02 (2006.01)

Patent

CA 2483290

A gas mask filter canister of varying shapes is filled by orienting the a fill opening to face upwardly, introducing into the fill opening a particulate filter material, and vibrating the filter canister at a frequency and amplitude, and for a time until a predetermined packing density is reached. The invention can be used to fill elliptical or other odd shaped filter canisters having a concave profiles to conform closely to the curvature of the wearer's face.

Un boîtier filtrant de masque à gaz présentant diverses formes est rempli par orientation de l'ouverture de remplissage afin qu'elle soit tournée vers le haut, par l'introduction dans l'ouverture de remplissage d'une matière filtrante particulaire et par vibration du boîtier filtrant à une fréquence, une amplitude et pendant une durée permettant d'obtenir une densité de tassement prédéterminée. L'invention peut être utilisée afin de remplir des boîtiers filtrants elliptiques ou ayant d'autres formes inhabituelles, présentant des profils concaves, afin de se conformer étroitement à la courbure du visage de l'utilisateur.

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