Polycarbonate double walled liquid holding vessel
First Claim
Patent Images
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.
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Abstract
A double walled polycarbonate liquid holding vessel. The vessel may have an inner wall and an outer wall that are coupled to each other in a manner that defines an air tight gap therebetween. A resealable unit may be provided with the vessel that permits resealable access to the interior of the inner wall. The outer wall may be multi-section or single section, and various techniques may be used to conceal joints used to mount the outer wall to the remainder of the vessel. Various embodiments are disclosed.
109 Citations
20 Claims
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1. A double walled liquid holding vessel, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A double walled liquid holding vessel, comprising:
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an inner wall having a contiguous bottom that is configured in such a manner as to define a cavity that holds liquid, said inner wall being comprised substantially of a polycarbonate material; and an outer wall provided about and substantially spaced from said inner wall to define an insulative gap between said inner wall and said outer wall, said outer wall being comprised substantially of a polycarbonate material and being coupled to said inner wall in such a manner that said insulative gap is air tight; a supplemental surface member provided on an exterior surface of said outer wall that is comprised at least in part of an elastomeric material; and a resealable mechanism coupled to said inner wall at a top portion thereof that provides resealable access to said cavity, said resealable mechanism including a resealable cover member that is removably coupled to a base; wherein said outer wall is comprised of at least a top section and a bottom section, and said top section is coupled via a first weld to said base and said bottom section is coupled to said top section via a second weld; and wherein said supplemental surface member is provided over said second weld to obscure said second weld from view. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A double walled liquid holding vessel, comprising:
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an inner wall with a contiguous bottom that is configured in such a manner as to define a cavity that holds liquid, said inner wall being comprised substantially of a polycarbonate resin material; an outer wall provided about and substantially spaced from said inner wall to define an insulative gap between said inner wall and said outer wall, said outer wall being comprised substantially of a polycarbonate resin material and being coupled to said inner wall in such a manner that said insulative gap is air tight; and a resealable mechanism coupled to said inner wall at a top portion thereof that provides resealable access to said cavity; wherein said insulative gap between said inner wall and said outer wall is substantially continuous; wherein said outer wall is formed of at least a top section and a bottom section, said top section being joined proximate said top portion of said inner wall to said resealable mechanism and said bottom section being joined to said top section at a mid region of said outer wall vertically between said resealable mechanism and the contiguous bottom of said inner wall; and wherein the top and bottom sections of said outer wall are joined together by a weld, said weld being obscured by a supplemental surface member. - View Dependent Claims (19, 20)
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Specification