Stemmed and stemless drinking vessel

Abstract

A drinking vessel is provided with a cup and a cap that can be on top of the cup to form a stemless assembly and beneath the cup to form a stemmed assembly. The cap has a stem that extends upwardly in the first assembly and downwardly in the second assembly. The stem includes a footprint with a sufficient diameter to support the second assembly in an upright position. A straw hole receives a straw in the first assembly of the drinking vessel.

1 . A method of converting a drinking vessel from stemless to stemmed, comprising:
 placing a cap on top of a cup so as to cover an open upper end of the cup and form a first assembly from which a person can drink;   the first assembly being adapted to sit on a horizontal support surface such that the first assembly is stemless;   removing the cap from the top of the cup;   inverting the cap;   setting the cup on the cap to form a second assembly from which a person can drink; and   the second assembly being adapted to sit on the horizontal support surface such that the cap forms a stem on the second assembly.   
     
     
         2 . The method of  claim 1  further comprising inserting a straw through a hole in the first assembly. 
     
     
         3 . The method of  claim 1  further comprising inserting a straw through a slot in the cap of the first assembly. 
     
     
         4 . The method of  claim 1  further comprising tilting the cup in the cap of the second assembly to a non-vertical orientation. 
     
     
         5 . The method of  claim 1  further comprising tilting the cup in the cap of the second assembly to an off-center position. 
     
     
         6 . The method of  claim 1  wherein the first and second assemblies are formed after the cup is filled with a beverage. 
     
     
         7 . A method of serving a drink comprising:
 filling a cup with a beverage; then   assembling the cup with an inventible member to form a first stemless drinking vessel, wherein the invertible member is on top of the cup and alternatively a second stemmed drinking vessel wherein the invertible member is beneath the cup.   
     
     
         8 . The method of  claim 7  wherein the invertible member is inverted for the first and second drinking vessels. 
     
     
         9 . The method of  claim 7  further comprising inserting a straw through an opening in the first stemless drinking vessel. 
     
     
         10 . The method of  claim 7  further comprising tilting the cup in the invertible member of the second stemmed drinking vessel to a non-vertical orientation. 
     
     
         11 . A drink vessel, comprising:
 a cup having a base and an open upper end;   an inversion piece with one end having a size and Shape complementary to the upper end of the cup and with a stem extending from the one end;   the inversion piece being movable from a first position on top of the cup with the stem extending upwardly and a second position beneath the cup with the stem extending downwardly.   
     
     
         12 . The drink vessel of  claim 11  further comprising a straw opening in the inversion piece. 
     
     
         13 . The drink vessel of  claim 11  wherein the stem terminates in footprint sufficient large to stand the inversion piece upright on a horizontal surface when the conversion piece is in the second position. 
     
     
         14 . The drink vessel of  claim 11  wherein the cup and inversion piece are in the form of a pineapple when the inversion piece is in the first position. 
     
     
         15 . A drinking vessel, comprising:
 a cup having a top and a bottom; and   a removable and invertible stem for the cup;   the stem being mountable on the top of the cup so as to extend upwardly and alternatively mountable on the bottom of the cup so as to extending downwardly.   
     
     
         16 . The drinking vessel of  claim 15  wherein the stem has a terminal end with a diameter to support the cup on a horizontal surface when the stem is on the bottom of the cup. 
     
     
         17 . The drinking vessel of  claim 15  further comprising a straw hole in the stem. 
     
     
         18 . The drink vessel of  claim 17  wherein the straw hole is adjacent a perimeter edge of the stem. 
     
     
         19 . The drinking vessel of  claim 15  wherein the cup and stem are in the form of a pineapple when the stem is on the top of the cup. 
     
     
         20 . The drinking vessel of  claim 15  further comprising a straw hole in one of the cup and the stem.