Flexible cylinder for closing a bottle

Abstract

An apparatus comprising a cylinder of flexible material, where the diameter of the cylinder matches the outside diameter of a bottle neck. The apparatus includes a solid top surface with a top ring of flexible material extending around the circumference, and an underside containing a centered raised circle matching the inside diameter of the bottle neck. The solid top surface is designed to cover the top opening of the bottle neck. The cylinder has an open bottom end with a bottom ring of flexible material extending around the circumference, configured to slide over the bottle neck. Inside the cylinder, a void extends from below the solid top surface through the open bottom end. A first elliptical opening in the cylinder wall extends around at least 50% of the circumference, allowing the solid top surface to be removed from the bottle neck by stretching the flexible material so that the top opening of the bottle neck extends through the elliptical opening.

1 . An apparatus comprising:
 a cylinder of flexible material;   a solid top surface of the cylinder with a top ring of the flexible material extending around a circumference of the cylinder along a cylinder wall, the solid top surface configured to cover a top opening of a neck of a bottle;   an open bottom end of the cylinder with a bottom ring of the flexible material extending around the circumference of the cylinder along the cylinder wall, the bottom ring configured to slide over the neck of the bottle; and   a first elliptical opening in the cylinder wall, the first elliptical opening extending around a portion of the circumference of the cylinder, the first elliptical opening configured to allow the solid top surface to be removed from the top opening of the neck of the bottle by stretching the flexible material such that the top opening of the neck of the bottle extends through the first elliptical opening.   
     
     
         2 . The apparatus of  claim 1  further comprising a second, smaller elliptical opening opposite the first elliptical opening on the cylinder wall. 
     
     
         3 . The apparatus of  claim 2  where the first elliptical opening and the second, smaller elliptical opening are configured to accept a can cap covering. 
     
     
         4 . The apparatus of  claim 3  further configured to attach the apparatus and the can cap covering to a keychain. 
     
     
         5 . The apparatus of  claim 1  where the flexible material comprises a Thermoplastic elastomer. 
     
     
         6 . The apparatus of  claim 1  where the flexible material comprises silicone. 
     
     
         7 . The apparatus of  claim 1  where the flexible material comprises thermoplastic polyurethane. 
     
     
         8 . The apparatus of  claim 1  where the flexible material comprises thermoplastic vulcanizate. 
     
     
         9 . The apparatus of  claim 1  where the bottle is a beer bottle. 
     
     
         10 . The apparatus of  claim 1  further comprising circumferential frontal ribs around at least a portion of the top ring. 
     
     
         11 . The apparatus of  claim 1  further comprising a radiused indent in the solid top surface. 
     
     
         12 . A method comprising:
 stretching a bottom ring of a bottle closer apparatus over a neck of a bottle, where the bottle closer apparatus includes:
 a cylinder of flexible material; 
 a solid top surface of the cylinder with a top ring of the flexible material extending around a circumference of the cylinder along a cylinder wall; 
 an open bottom end of the cylinder with the bottom ring of the flexible material extending around the circumference of the cylinder along the cylinder wall; and 
 a first elliptical opening in the cylinder wall, the first elliptical opening extending around a portion of the circumference of the cylinder; 
   pulling the bottom ring down the neck of the bottle; and   lifting the solid top surface by stretching the first elliptical opening and pushing a top opening in the neck through the first elliptical opening, such that the top opening of the bottle extends through the first elliptical opening.   
     
     
         13 . The method of  claim 12  further comprising a second, smaller elliptical opening opposite the first elliptical opening on the cylinder wall. 
     
     
         14 . The method of  claim 12  where the flexible material comprises a Thermoplastic elastomer. 
     
     
         15 . The method of  claim 12  where the flexible material comprises silicone. 
     
     
         16 . The method of  claim 12  where the flexible material comprises thermoplastic polyurethane. 
     
     
         17 . The method of  claim 12 , where the flexible material comprises thermoplastic vulcanizate. 
     
     
         18 . The method of  claim 12  where the bottle is a beer bottle. 
     
     
         19 . The method of  claim 12  where the top ring further includes circumferential frontal ribs. 
     
     
         20 . The method of  claim 12  further comprising folding the solid top surface into the neck of the bottle such that the solid top surface remains away from the top opening in the neck of the bottle.