Air cleaning cartridge for a gas mask and breathing equipment with an insert
AssigneeDragerwerk Aktiengesellschaft
InventorsWolfgang Drews, Gunther Kolbe, Stephan Melzer, Hasso Weinmann
Life of this patent
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Abstract
A gas mask and breathing equipment air cleaning cartridge (1) with a carbon dioxide-binding chemical packing (4) and an insert (3). The insert has legs (6) arranged in a radiate pattern perpendicularly to the direction of flow. The legs (6) have a flexibility that compensates for differences in the filling ratios of the strands (5) of chemical and have an identical bent zigzag-shaped designs to provide good heat distribution in the circumferential direction and good resistance to vibrations and shocks.
Claims14
A gas mask and breathing equipment air-cleaning cartridge, comprising a cartridge housing with a wall defining a cartridge chamber for gas flow through said chamber in a flow direction, said flow direction being substantially parallel to said wall;
- a carbon dioxide-binding chemical packing provided in said chamber and an insert positioned in said chamber, said insert including legs arranged in a radiate pattern, extending perpendicular to said flow direction, said legs starting from a center of said insert and pointing toward said wall of the cartridge, said legs having leg ends adjacent said wall and not connected with said wall for subdividing the chemical packing into individual strands of chemical, said legs being flexible and displaceable relative to one another for compensating for differences in filling ratios of said strands of chemical, said legs having an identical bent zig-zag shaped design.
A gas mask and breathing equipment air-cleaning cartridge, comprising a cartridge wall defining a cartridge chamber for gas flow through said chamber in a flow direction, said flow direction being substantially parallel to said wall;
- a carbon dioxide-binding chemical packing provided in said chamber and an insert positioned in said chamber, said insert including legs arranged in a radiate pattern, extending perpendicular to said flow direction, said legs starting from a center of said chamber and pointing toward the wall of the cartridge for subdividing the chemical packing into individual strands of chemical, said legs being flexible and displaceable relative to one another for compensating for differences in filling ratios of said strands of chemical, said legs having an identical bent zig-zag shaped design, said leg ends are bent to be substantially tangential to said wall of said cartridge to form part of an external polygon, said external polygon having a diameter that is smaller than an internal diameter of said wall of said cleaning cartridge.
A gas mask and breathing equipment air-cleaning cartridge, comprising a cartridge wall defining a cartridge chamber for gas flow through said chamber in a flow direction, said flow direction being substantially parallel to said wall;
- a carbon dioxide-binding chemical packing provided in said chamber and an insert positioned in said chamber, said insert including legs arranged in a radiate pattern, extending perpendicular to said flow direction, said legs starting from a center of said chamber and pointing toward the wall of the cartridge for subdividing the chemical packing into individual strands of chemical, said legs being flexible for compensating for differences in filling ratios of said strands of chemical, said legs having an identical bent zig-zag shaped design, said zig-zag design comprises, beginning from said center, a first counter-clockwise 90.degree. angle, a second clockwise 45.degree. angle, and a third counter-clockwise 90.degree. angle.
Dependencies are inferred from the claim text.