Innova Pure Water Inc.

Henry C Reid

John E Nohren

Joseph H Nohren

Donald G Huggins, Jr

John T Smith

Gerald Larsen

Bradley D Mierau

A simple yet effective method and apparatus produce a web suitable for treatment of water as a static filtration media, e.g. to remove chlorine and lead from water in contact with the media. A web is coated with a coating composition that facilitates treatment of water and includes a binder, and the web is compressed in one dimension about 25-75% (e.g. 40-60%) so as to make the void size distribution substantially more uniform. The compression is substantially maintained until the binder substantially cures so that the coated final web produced has a second void size distribution more uniform than the first void size distribution, e.g. the coated final web having void volumes with a mean value of about 6-7&times;10 liters and/or an RDV/BV ratio of at least 0.4, and a porosity of greater than 90%. Compression may be at least primarily practiced by substantially immediately after coating passing the web through a series of staggered rollers; or by tightly winding the web prior to cure of the binder; or by compressing the web while in a curing tunnel using upper and lower compression belt roller assemblies. Coating may be practiced using a non-woven web having a weight of about 4-7 ounces/sq. ft., and by applying a coating equal to about 100-200% of the uncoated weight of the fabric comprising about 10-20% binder, about 60-90% activated carbon, and about 0-25% zeolite.

Method for manufacture of static filtration media

A filter assembly, particularly for use with a plastic bottle having an open neck with an inside diameter of about 50 mm or less (e.g. about 25 mm), includes a tube of filtering material connected to one surface of a cap while a valve extends from an opposite surface of the cap. The tube is preferably of filtering material such as activated carbon with plastic binder, having a substantially continuous liquid-porous sidewall, a hollow interior, a first closed end, and a second open end. The tube is operatively connected to the cap second surface at the tube second open end by sonic welding, a mechanical connection, or adhesively. The cap has a fitting portion for cooperating with the bottle neck, such as internal screw threads or a snap portion. The valve may be a reciprocating valve, a baby bottle nipple, or a spray device. A biocidal medium may be disposed within the hollow interior of the filter tube, and the tube may be wrapped with a filter material having a pore size of about 1-4 microns. The filtering material is capable of reducing the level of chlorine and water passing through it by at least 50% at a flow rate of about 5 ml/second.

Bottle filter cap

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Clearwater, FL, United States of America

Henry C Reid