Sundstrom Safety Ab

Sunstroms Respiratorer Ab

Per O Sundstrom

A filter container for direct or indirect connection to a protective mask comprises a cup-shaped casing having a bottom wall with an inhalation air intake formed therein, a cover closing the casing and having a top wall with an inhalation air outtake formed therein, a particle filter disposed within a bottom portion of the casing and secured around its circumference to an inner sidewall of the casing, and an absorption filter mounted between the particle filter and the cover within an upper portion of the casing. The bottom wall of the casing has a plurality of inwardly projecting, circumferentially spaced, radially directed stiffening ribs formed thereon, and the stiffening ribs have inwardly facing longitudinal edges lying substantially in a single plane. The particle filter has upper and lower folds, and engages at lower folds thereof the inwardly facing longitudinal edges of the stiffening ribs and engages at upper folds thereof a member supporting a bottom of the absorption filter.

Filter container for an absorption filter and a particle filter, for

The invention concerns a filter container for an absorption filter (8) and a particle filter (7), the container being adapted to be connected to a protective mask. The filter container is characterized in that it comprises a cup-shaped casing (1) which has in its bottom (2) an intake (3) for inhalation air, and a cover (4) closing the casing (1), the cover having an outtake (5) for inhalation air and being connectible to the protective mask, the particle filter (7) being arranged at the bottom (2) of the cup-shaped casing (1), and the absorption filter (8) being arranged between the particle filter and the cover (4) closing the casing; that the particle filter (7) is sealed to the casing (1) by glue (9) applied to the inner side of the casing; that the portion (14) of the cup-shaped casing (1) containing the particle filter (7) is essentially cylindrical and has a diameter smaller than the remaining cylindrical casing portion (13 ) containing the absorption filter; that the bottom (2) of the casing (1) and the cover (4) are slightly conically bulging outwardly towards the air intake (3) and the air outtake (5), respectively; and that closely lying, radially extending stiffening ribs (15, 16) are arranged on the slightly conical portions of the bottom (2) and the cover (4), respectively, and have their tops (17) facing inwardly towards the container lying in radial planes.

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Lidingo, Sweden

Per O Sundstrom