Patent ID: 7823802
Filing Date: 2010-11-02
Classification: B65D

Abstract:
1. A straw comprising: an outer tubular member having a closed bottom end and at least one aperture through a lower portion of a side wall thereof; an inner tubular member longer than said outer tubular member and having a lower portion of diameter defining an annulus between said inner and outer tubular members, said inner tubular member having an upper portion of outer diameter reciprocally slidable in abutment within an upper portion of said outer tubular member between a full-closed condition with an open bottom end of said inner tubular member seated on said closed bottom end of said outer tubular member and a full-opened condition with said open bottom end of said inner tubular member above an uppermost of said at least one aperture; a first pair of tapered surfaces, said first pair having one of said surfaces on an inner wall of said outer tubular member and another of said surfaces on an outer wall of said inner tubular member, said pair of tapered surfaces mating not lower than above an uppermost of said at least one aperture of said outer tubular member and providing a concentric space in said annulus; and a second pair of tapered surfaces, said second pair having one of said surfaces on an outer wall of said outer tubular member and another of said surfaces on an inner sidewall of a cap for covering and uncovering an open top end of said inner tubular member, said second pair of tapered surfaces mating at an upper end of said outer tubular member, whereby said upper end of said outer tubular member is squeezed by said pairs of tapers in said fully-closed condition.