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Insulated beverage container

  • US 4,993,580 A
  • Filed: 04/16/1990
  • Issued: 02/19/1991
  • Est. Priority Date: 04/16/1990
  • Status: Expired due to Fees
First Claim
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1. An insulated beverage container comprising,a tubular interior wall defined about an elongate axis, anda tubular exterior wall, the tubular exterior wall coaxially arranged relative to the elongate axis in a surrounding relationship relative to the interior wall and coextensively formed therewith, and a floor mounted to lowermost ends of the interior and exterior walls orthogonally arranged to the elongate axis defined by the interior and exterior walls, the interior wall spaced from the exterior wall by a predetermined spacing, andcorrugating means adhesively mounted within the predetermined spacing for effecting insulation and cushioning of the exterior wall relative to the interior wall, andthe corrugating means includes a series of equally spaced planar ribs, the planar ribs circumferentially spaced relative to one another within the predetermined spacing and wherein the ribs are radially aligned relative to the elongate axis of the interior and exterior walls, andwherein the ribs include first ribs, the first ribs defined by a first length equal to one-third of the predetermined spacing, the first ribs integrally mounted to the exterior wall within the predetermined spacing and spaced apart a first spacing, and second ribs defined by a second length equal to one-third of the predetermined spacing and integrally mounted to the interior wall within the predetermined spacing wherein the second ribs and the first ribs are radially aligned relative to the elongate axis, and the second ribs are offset relative to the first ribs to bisect the first spacing between the first ribs, and the corrugating means includes a sinusoidal corrugating medium medially mounted within the predetermined spacing between the interior wall and the exterior wall wherein the corrugating medium is defined by a sinusoidal amplitude equal to one-third of the predetermined spacing between the interior and exterior walls and includes sinusoidal peaks fixedly secured to the first ribs and sinusoidal valleys fixedly secured to the second ribs.

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