An insulating and cooling receptacle for a beverage bottle comprises an insulating base portion and a bottle-cooling cap portion which is filled with a freezable substance. The cap is removable to permit insertion or removal of a bottle and to permit the cap portion to be separately pre-frozen prior...http://www.google.es/patents/US4338795?utm_source=gb-gplus-sharePatente US4338795 - Beverage insulating and cooling receptacle
