Water filter
AssigneeAmway Corporation
InventorsHerbert J. VanderBilt, Timothy D. Modert
Life of this patent
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Abstract
The specification discloses a double shell filter comprising an inner shell of bounded 80 to 400 U.S. mesh screen carbon particles and an outer shell of bonded 20 to 80 mesh screen carbon particles wherein the inner and outer particles are bonded internally to each other and the two shells are bonded together preferably by an ultra high molecular weight polymer binder having a melt index of less than about 1 gram per ten minutes as determined by ASTM D1238 at 190 degrees C. and 15 kilograms load.
Claims33
A carbon particle filter comprising carbon particles bonded into a filter block by a low melt index polymeric material having a melt index of less than about 1 gram per 10 minutes as determined by ASTM D 1238 at 190 degrees C. and 15 kilograms load, whereby said polymeric material will tackify at elevated temperatures without becoming sufficiently liquid to substantially wet the carbon particles.
A carbon particle filter comprising:
- an inner shell of bonded 80 to 400 U.S. Series mesh screen carbon particles bonded to each other;
- an outer shell of bonded 20 to 80 U.S. Series mesh screen carbon particles bonded to each other and to said inner shell whereby a unitized, integral double shell carbon filter is obtained which will allow water to pass more fully than a comparably sized single shell bonded filter of 80 to 400 U.S. Series mesh screen carbon particles without significantly adversely affecting the removal qualities of the filter.
Dependencies are inferred from the claim text.