US 6,599,427 B2 · Static filter pitcher

Abstract

A pitcher or carafe housing is provided that has a raw water reservoir. A high performance filter receives raw water from a lower portion of the reservoir. The water is preferably received at or travels through a water entry tube to the back and bottom of the filter. In about 1-3 minutes the water percolates through the filter element, until it reaches a water exit port. A pouring chamber may be provided at the side of the pitcher for receiving the water from the water exit port, so that the water will continue to be treated and flow up into the pouring chamber until the water level equalizes in height in the reservoir and the pouring chamber. The filter and its housing may be placed into and removed from the inside of the raw water reservoir, or the filer housing may be side loaded. The filter media may be a polyester non-woven mat with a weight of 4-7 oz./yd.2 impregnated with carbon or zeolite and subject to compression between about 25-75% (e.g. about 50%).

Claims7

Dependent claims

A method of purifying water using a water filtration assembly including a first housing having upper and lower end portions and defining a reservoir for water to be purified, and a filter housing having a treatment media with active sites disposed therewithin, an inlet port for receiving water from a lower end portion of the reservoir, and an outlet port for purified water, said method comprising:

(a) flowing water to be purified into the reservoir through an opening defined in the upper end portion of the first housing, at least some of the water to be purified flowing from the lower end portion of the reservoir through the inlet port into the filter housing, the inlet port guiding the water to be purified to a back and bottom of the treatment media;
(b) maintaining the water to be purified in the filter housing for at least about 30 seconds in contact with the treatment media disposed therewithin, to effect removal of contaminants therefrom, wherein the treatment media comprises a static treatment media bound to a substrate such that migration to the active sites is accomplished through diffusion;
and
(c) dispensing through the outlet port water that has been purified in and exited the filter housing.

1 more element

Dependencies are inferred from the claim text.

Static filter pitcher

Life of this patent

Static filter pitcher

Life of this patent

Abstract

Claims7