US Patent 10173827 Beverage container insulator assemblies and insulator sleeves

Beverage container insulator assemblies include a beverage insulator having a beverage insulator interior. A retaining collar is carried by the beverage insulator and has a collar opening. A beverage container is in the beverage insulator interior of the beverage insulator. The beverage container extends through the collar opening of the retaining collar. An insulator sleeve includes a sleeve base encircling the beverage container and retained between the beverage insulator and the retaining collar. A thermally-insulating, flexible, expandable and contractible insulator sleeve body extends from the sleeve base through the collar opening of the retaining collar. The insulator sleeve body engages and substantially conforms to the beverage container. An expandable sleeve neck on the insulator sleeve body engages the beverage container. Insulator sleeves for beverage containers are also disclosed.