Filter container for an absorption filter and a particle filter,

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

1991-07-15

1992-10-27

Shapiro, Paul E.

Surgery

Respiratory method or device

Means for removing substance from respiratory gas

12820528, 12820529, 55316, 55DIG35, 55521, A62B 710, B01D 4610

Patent

active

051580772

ABSTRACT:
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.

REFERENCES:
patent: 2825424 (1958-03-01), Gross
patent: 3118445 (1964-01-01), Norman
patent: 4543112 (1985-09-01), Ackley et al.
patent: 4548626 (1985-10-01), Ackley et al.
patent: 4714486 (1987-12-01), Silverthorn
patent: 5052385 (1991-10-01), Sundstrom

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