Reusable cup with integrated ribbed heat sink sheath

A cup comprising:

• a base;
• a sidewall extending upward from the base to a top of the cup to define an internal cavity and an open top, wherein the sidewall comprises:
• an upper sidewall;
• a lower sidewall located between the upper sidewall and the base, the lower sidewall having a lower wall and a plurality of raised ribs extending radially outward from the lower wall and being elongated in a direction between the top and the base, wherein the plurality of raised ribs are distributed around a periphery of the lower sidewall and are separated by recesses that are elongated in the direction between the top and the base;
• and
• an annular ledge connecting the upper sidewall to the lower sidewall, wherein the annular ledge extends inwardly from the upper sidewall to the lower sidewall and forms a reduction in width of the sidewall between the upper sidewall and the lower wall;
• wherein the upper sidewall includes an underside edge;
• wherein the upper sidewall includes a foot extending downwardly from a bottom portion of the upper sidewall, wherein the foot includes the underside edge of the upper sidewall and the foot defines a channel between the upper sidewall and the lower sidewall, and the foot is positioned outside the maximum width of the lower sidewall such that the foot is positioned outside the plurality of raised ribs;
• wherein a maximum ratio of radial thickness of each rib of the plurality of raised ribs to radial thickness of the lower wall is about 3:1;
• wherein the plurality of raised ribs include land areas and the recesses include recess openings defined between opposing land areas, wherein a ratio of width of the openings to width of the land areas to is between about 2.5:1 to about 1.75:1, wherein the ratio decreases over at least a portion of the lower sidewall from the top to the base;
• and
• wherein a ratio of radial thickness of each rib of the plurality of raised ribs to radial thickness of the lower wall decreases from about 3:1 to about 1:1 over at least a portion of each rib of the plurality of raised ribs.

A cup comprising:

• a base;
• a sidewall extending upward from the base to a top of the cup to define an internal cavity and an open top, wherein the sidewall comprises:
• an upper sidewall, wherein at least a portion of the upper sidewall decreases in width in a downward direction from the top toward the base, wherein the upper sidewall includes an underside edge and a foot extending downwardly from a bottom portion of the upper sidewall, wherein the foot includes the underside edge of the upper sidewall and the foot defines a channel between the upper sidewall and the lower sidewall;
• a lower sidewall located between the upper sidewall and the base and the lower sidewall decreasing in width in the downward direction, the lower sidewall having a lower wall and a plurality of raised ribs extending radially outward from the lower wall and being elongated in a direction between the top and the base, wherein the plurality of raised ribs are distributed around a periphery of the lower wall and are separated by recesses that are elongated in the direction between the top and the base, wherein the plurality of raised ribs converge towards each other from the top toward the base, wherein a maximum ratio of radial thickness of each rib of the plurality of raised ribs to radial thickness of the lower wall is 3:1, wherein at least a portion of a radial thickness of each rib of the plurality of raised ribs tapers from the top toward the base, wherein an outer surface area of the lower sidewall is between 200% and 250% greater than an outer surface area of the lower wall if the lower sidewall did not have the plurality of raised ribs, wherein a length of each rib the plurality of raised ribs is between 70% to 80% of a height of the cup;
• an annular ledge connecting the upper sidewall to the lower sidewall, wherein the annular ledge extends inwardly from the upper sidewall to the lower sidewall and forms a reduction in width of the sidewall between the upper sidewall and the lower sidewall, such that a maximum width of the lower sidewall is less than a minimum width of the upper sidewall;
• wherein the upper sidewall includes an underside edge;
• wherein the upper sidewall includes a foot extending downwardly from a bottom portion of the upper sidewall, wherein the foot includes the underside edge of the upper sidewall and the foot defines a channel between the upper sidewall and the lower sidewall, and the foot is positioned outside the maximum width of the lower sidewall such that the foot is positioned outside the plurality of raised ribs;
• wherein the plurality of raised ribs include land areas and the recesses include recess openings defined between opposing land areas, wherein a ratio of width of the openings to width of the land areas to is between about 2.5:1 to about 1.75:1;
• and
• wherein a ratio of radial thickness of each rib of the plurality of raised ribs to radial thickness of the lower wall decreases from about 3:1 to about 1:1 over at least a portion of each rib of the plurality of raised ribs.