Spherical drinking vessel

Abstract

In an example, a spherical drinking vessel is providing. The spherical drinking vessel may include a curved sidewall having a first hemisphere-shaped section and a second remaining section. The second remaining section of the curved sidewall may define an opening for receiving a liquid. A first thickness of the curved sidewall at a point corresponding to a nadir of the first hemisphere-shaped section of the curved sidewall may be different than a different point on the first hemisphere-shaped section of the curved sidewall. In an example, the second thickness is greater than the first thickness.

1 . An apparatus, comprising:
 a curved sidewall having a first hemisphere-shaped section and a second remaining section, the second remaining section of the curved sidewall defining an opening for receiving a liquid;   wherein a first thickness of the curved sidewall at a point corresponding to a nadir of the first hemisphere-shaped section is different than a second thickness of the curved sidewall at different point on the first hemisphere-shaped section; and   wherein the second thickness is greater than the first thickness.   
     
     
         2 . The apparatus of  claim 1 , wherein a shape of a cavity defined by an inside of the first hemisphere-shaped section of the curved sidewall is a spherical segment stacked on a truncated cone stacked on a spherical dome. 
     
     
         3 . The apparatus of  claim 1 , wherein a shape of a cavity defined by an inside of the first hemisphere-shaped section of the curved sidewall is a truncated cone stacked on a spherical dome. 
     
     
         4 . The apparatus of  claim 1 , wherein a shape of a cavity defined by an inside of the first hemisphere-shaped section of the curved sidewall is a three dimensional shape stacked on a spherical dome;
 wherein the three dimensional shape has a volume that is less than a volume of a spherical segment having a first base that is equal in area to a second base of the three dimensional shape and a third base that is smaller than the first base and equal in area to a fourth base of the three dimensional shape.   
     
     
         5 . The apparatus of  claim 1 , further comprising:
 a cap structured to releasably couple to the curved sidewall, the cap having a shape of spherical dome.   
     
     
         6 . The apparatus of  claim 1 , wherein a convex surface of the cap defines a void, and wherein the apparatus further comprises:
 a fold up straw located inside the void.   
     
     
         7 . The apparatus of  claim 6 , further comprising a first structure on a concave surface of the cap, the first structure arranged to mate with a second structure located on the curved sidewall. 
     
     
         8 . The apparatus of  claim 7 , wherein at least one of the first structure or the second structure includes a thread. 
     
     
         9 . The apparatus of  claim 1 , wherein the first thickness of the curved sidewall at said another point is equal to a third thickness of the curved sidewall at a point on the second remaining section of the curved sidewall. 
     
     
         10 . An apparatus, comprising:
 a single-walled drinking vessel, the single-walled drinking vessel including:
 an outer surface having a first shape, wherein the first shape is a sphere less a spherical dome having a first volume; and 
 an inner surface defining a cavity having an upper region and a lower region, wherein the lower region of the cavity has a second shape, wherein the second shape is a spherical dome having a second volume. 
   
     
     
         11 . The apparatus of  claim 10 , wherein the upper region of the cavity has a third shape, wherein the third shape is a spherical segment stacked on a different three dimensional shape. 
     
     
         12 . The apparatus of  claim 11 , wherein the different three dimensional shape is a truncated cone. 
     
     
         13 . The apparatus of  claim 10 , further comprising a cap sealingly attached to the single-walled drinking vessel. 
     
     
         14 . The apparatus of  claim 10 , further comprising a handle formed on the outer surface. 
     
     
         15 . An apparatus, comprising:
 a curved sidewall having a first hemisphere-shaped section and a second remaining section, the second remaining section of the curved sidewall defining an opening for receiving a liquid; and   a ring of material on an inner surface of the first hemisphere-shaped section of the curved sidewall, the ring of material oriented along a plane that is parallel to a plane along which the opening is oriented.   
     
     
         16 . The apparatus of  claim 15 , wherein the ring of material is affixed to the inner surface of the curved sidewall. 
     
     
         17 . The apparatus of  claim 15 , wherein the ring of material is attached to a structure on the inner surface of the curved sidewall. 
     
     
         18 . The apparatus of  claim 15 , wherein the curved sidewall comprises a plastic, and wherein a density of the ring of material is different than a density of the plastic of the curved sidewall. 
     
     
         19 . The apparatus of  claim 15 , wherein the ring of material is operable to, responsive to any point on an outer surface of the first hemisphere-shaped section of the curved sidewall being placed on a planar surface, to urge the apparatus to roll to, or hold, a resting position at which the planes are parallel to the planar surface.