Back to results
US 5,126,070 AGranted
Chlorine dioxide generator
AssigneeThe Drackett Company
InventorsDavid Leifheit, Richard Hutchings
Life of this patent
Estimating the term…
Abstract
An article of manufacture comprising a rupturable pouch and an absorbent carrier for reacting a chlorite and an acid to form chlorine dioxide gas.
Claims38
An article of manufacture for generating and releasing chlorine dioxide gas at a controlled rate comprising
- a frangible pouch containing an aqueous solution of a dissolved reactant,
- an absorbent carrier for a dry reactant, and
- means for maintaining the pouch and the absorbent carrier in unitary association,
- whereby the aqueous solution is absorbed into the absorbent carrier when said pouch is broken, and the dissolved reactant reacts with said dry reactant to generate and release chlorine dioxide gas, and
- wherein the release rate of the chlorine dioxide gas can be controlled by the amount of dry reactant, the type of dry reactant, the concentration of the aqueous solution, the absolute amount of water, and the type of absorbent carrier.
2 more elements
An article of manufacture for generating and releasing chlorine dioxide gas at a controlled rate comprising
- a rupturable pouch containing an aqueous alkali metal chlorite solution,
- an absorbent carrier proximate to the pouch,
- a dry acid selected from the group consisting of organic acid, sodium bisulfate, and phosphoric acid adsorbed into the absorbent carrier, and
- means to retain the absorbent carrier proximate to the rupturable pouch,
- whereby the aqueous solution is absorbed by the absorbent carrier when the pouch is ruptured and the chlorite reacts with the acid to form and release chlorine dioxide gas, and
- wherein the release rate of the chlorine dioxide gas can be controlled by the amount of dry acid, the type of dry acid, the concentration of the aqueous alkali metal chlorite, solution, the absolute amount of water, and the type of absorbent carrier.
3 more elements
An article of manufacture for generating and releasing chlorine dioxide gas at a controlled rate comprising
- an impervious, rupturable pouch containing an aqueous sodium chlorite solution having a concentration on a weight basis of from about 0.01% to about 15%;
- a compartment enveloping the pouch, the compartment having chlorine dioxide gas outlet means;
- an absorbent carrier between the pouch and the compartment,
- a dry acid selected from the group consisting of organic acid, sodium bisulfate, and phosphoric acid adsorbed onto the carrier,
- whereby the absorbent carrier absorbs the aqueous sodium chlorite solution when the pouch is ruptured, and the chlorite reacts with the acid to form gaseous chlorine dioxide, which is releasable through the chlorine dioxide gas outlet means.
2 more elements
An article of manufacture for generating and releasing chlorine dioxide gas at a controlled rate comprising
- a frangible pouch containing aqueous media,
- an absorbent carrier for sodium chlorite and an acid, and
- means for maintaining the pouch and the absorbent carrier in unitary association,
- whereby the aqueous media is absorbed into the absorbent carrier when the pouch is broken, and the sodium chlorite reacts with the acid to generate and release chlorine dioxide gas, and
- wherein the release rate of the chlorine dioxide gas can be controlled by the amount of sodium chlorite and acid, the type of acid, the concentration of the aqueous media, the absolute amount of water, and the type of absorbent carrier.
2 more elements
Dependencies are inferred from the claim text.