Filter support, assembly and system

Details Filter support, assembly and system Filter support, assembly and system

B - Operations, Transporting

01

D

B01D 46/54 (2006.01) A62B 18/04 (2006.01) A62B 23/02 (2006.01) B01D 46/42 (2006.01)

Patent

CA 2361155

A filter support (10) that includes two or more first support ribs (20a, 20b, 20c) on a first side of the filter support. The first support ribs are generally aligned along a longitudinal axis (11). The filter support also includes two or more second support ribs (30a, 30b, 30c, 30d) on a second side of the filter support, where the filter support's second side is opposite from the first side. The second support ribs are also generally aligned along the longitudinal first axis. At least one of the first support ribs is laterally offset from each of the second support ribs along a transverse axis (13) that is generally perpendicular to the longitudinal axis. The filter support provides support to opposing sides of a filter bag (40) or opposing individual filter elements. Also disclosed are a filter assembly including a filter and a filter support, along with a helmet-mounted powered air purifying respirator in which the filter assembly is located within the helmet crown.

Cette invention se rapporte à un support de filtre (10), qui comprend au moins deux premières nervures de support (20a, 20b, 20c) sur un premier côté du support de filtre. Ces premières nervures sont généralement alignées le long d'un axe longitudinal (11). Ce support de filtre comporte également au moins deux secondes nervures de support (30a, 30b, 30c, 30d) sur un second côté du support de filtre, ce second côté étant opposé au premier. Les secondes nervures de support sont également alignées généralement le long du premier axe longitudinal. Au moins l'une de ces premières nervures de support est latéralement décalée par rapport à chacune des secondes nervures de support le long d'un axe transversal (13), lequel est généralement perpendiculaire à l'axe longitudinal. Ce support de filtre soutient les côtés opposés d'un sac filtrant (40) ou les éléments opposés individuels d'un filtre. Cette invention concerne également un ensemble filtre comprenant un filtre et un support de filtre, ainsi qu'un respirateur à adduction d'air filtré fonctionnant à l'aide de piles, monté sur casque, l'ensemble filtre étant placé dans la couronne du casque.

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