Patent ID: 7270244
Filing Date: 2007-09-18
Classification: A47J

Abstract:
1. A double walled liquid holding vessel, comprising: an inner wall having an attached bottom that is configured in such a manner as to define a cavity that holds liquid; and an outer wall provided about and substantially spaced from said inner wall to define an insulative gap between the inner and outer walls; wherein said inner wall and said outer wall are respectively coupled at top portions thereof to a base of a resealable unit, the coupling being by an air tight seal that renders said insulative gap air tight, said resealable unit including a threaded cap member that removably mounts to said base; wherein said inner wall is comprised primarily of a substantially cylindrical region and also includes a tapered region, the inner wall tapered region being located between the substantially cylindrical region of the inner wall and the inner wall seal at the base and having a diameter that decreases or remains constant from the inner wall substantially cylindrical region to the inner wall seal at the base; wherein said outer wall is comprised primarily of a substantially cylindrical region and also includes a tapered region, the outer wall tapered region being located between the substantially cylindrical region of the outer wall and the outer wall seal at the base and having a diameter that decreases or remains constant from the outer wall substantially cylindrical region to the outer wall seal at the base; wherein said inner wall is formed integrally with said base and said outer wall is coupled to said base by a first weld; and wherein said inner wall and said outer wall are both formed substantially of a polycarbonate material.