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US 2011/0079551 A1Published application
Water treatment cartridge
Assignee3M Innovative Properties Company
InventorsJudd D. Olson, Sean C. McGreevy, Kent E. Lageson, Kevin E. Kinzer, Paul J. Cobian, Thomas Herdtle, Benjamin P. Williams
Life of this patent
Estimating the term…
Abstract
A water treatment cartridge, or insert, for use in connection with a water treatment device such as a gravity-fed water pitcher or the like includes a support structure and water treatment material arranged in combination with the support structure. The support structure may, for example, generally enclose the water treatment material, or the support structure may be integrated into the structure of the water treatment material
Claims19
A water treatment cartridge, comprising:
- a) a support structure;
- and
- b) water treatment material arranged in combination with the support structure;
- wherein the water treatment material has a transverse cross-sectional area and an average height, and wherein the ratio of the transverse cross-sectional surface area of the water treatment material to the average height of the water treatment material is at least about 10 inches.
1 more element
A water treatment cartridge, comprising:
- a) a tray member containing at least one filtered water drain opening;
- b) a water distribution plate mounted on the tray member to define a water treatment chamber between the tray member and the water distribution plate, the water distribution plate containing a plurality of water distribution openings allowing unfiltered water to pass through the water distribution plate into the water treatment chamber;
- and
- c) nonwoven treatment material arranged in the water treatment chamber;
- wherein the ratio of the transverse cross-sectional surface area of the water treatment material to the average height of the water treatment material is at least about 10 inches, wherein the water treatment material has a flow rate of at least about 0.5 gallon per minute (gpm) at ¾ inch of water pressure head, and wherein the water treatment cartridge passes NSF Standard 42 for a capacity of at least about 40 gallons.
2 more elements
Dependencies are inferred from the claim text.