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US 5,509,605 AGranted
Filtering straw
AssigneeHydro-Life, Inc.
InventorGerry D. Cripe
Life of this patent
Estimating the term…
Abstract
A filtering straw for drawing liquid from a container includes a tube with a pair of filters, one filter being removably mounted in each end of the tube. Each of the filters includes a portion extending into the corresponding end of the tube, each of which has an outer circumferential liquid permeable surface cooperating with the inner circumferential of surface of the tube to define an annular chamber therebetween. Accordingly, the cross sectional area through which fluid is drawn by sucking on the straw is the circumferential surface of each filter.
Claims10
A filtering straw for drawing liquid from a container comprising:
- (a) a tube having a pair of ends, and
- (b) a pair of filters, each of said filters being removably mounted on said tube, one of said filters including means for removing one type of impurity from said liquid, the other filter including means for removing another type of impurity from the liquid not removed by said one filter, each of said filters being mounted on a corresponding end of said tube and include a portion extending into said corresponding end of the tube, said portion of each filter having an outer circumferential liquid permeable surface cooperating with the inner circumferential surface of the tube to define an annular chamber
Dependencies are inferred from the claim text.