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A foaming device for the preparation of coffee and milk, cappuccinos or similar drinks including a cover designed to close the top of a virtually cylindrical container of the drink and a disk movable axially inside the container during use of the device with the disk being equipped with at least one

A foaming device for the preparation of coffee and milk, cappuccinos or similar drinks including a cover designed to close the top of a virtually cylindrical container of the drink and a disk movable axially inside the container during use of the device with the disk being equipped with at least one mesh portion for emulsion of the air in the liquid and being fastened transversely to a rod running axially in a hole in the cover and protruding above it to be grasped manually. The device is characterized in that said cover includes at least two concentric annular grooves designed to engage with the upper edge of containers of different diameters to realize closing of the container with there being present a flexible circumferential portion that extends from the edge of the disk towards the outside to cover the opening that is created between the disk edge and the internal wall of the container when the device is used with containers of greater diameter.

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What is claimed is: 1. A foaming device for the preparation of coffee and milk, cappuccinos or similar drinks, the device comprising: a cover designed to close a top of substantially cylindrical containers, each container containing a liquid, said cover defining a hole; a rod extending axially thro

What is claimed is: 1. A foaming device for the preparation of coffee and milk, cappuccinos or similar drinks, the device comprising: a cover designed to close a top of substantially cylindrical containers, each container containing a liquid, said cover defining a hole; a rod extending axially through said hole in said cover such that a portion of said rod extends to a position above said cover; a disk movable axially within one of the containers during use of the device, said disk being fastened transversely to said rod, said cover including at least two substantially concentric annular grooves for engaging an upper edge of one of said containers, said containers having varying diameters, said disk having at least one mesh portion for forming an emulsion of air in said liquid contained in one of said containers, said disk having a flexible circumferential portion extending in a radial direction from the edge of the disk such that said flexible circumferential portion covers at least partially an opening defined between said edge of said disk and an internal wall of one of the containers having a first diameter, said circumferential portion bending when said disk is located within one of the containers having a second diameter, said first diameter being greater than said second diameter. 2. A foaming device in accordance with claim 1, wherein said grooves are formed on a lower edge of the cover, said grooves having a conical shape to facilitate centering of the cover on one of said containers. 3. A foaming device in accordance with claim 1, wherein said circumferential portion includes a plurality of flexible fins separated by radial notches. 4. A foaming device in accordance with claim 3, wherein said flexible fins are six in number. 5. A foaming device in accordance with claim 3, wherein said disk is round and the flexible fins form a circular crown around said disk. 6. A foaming device in accordance with claim 5, wherein the thickness of said circular crown is approximately equal to the difference between the radius of the widest annular groove and the radius of the narrowest annular groove with the diameter of the disk being slightly less than the diameter of the narrowest groove. 7. A foaming device in accordance with claim 1, wherein said mesh portions are formed opposite a plurality of windows formed in a body of the disk with the windows being elongated and arranged radially around the center of the disk. 8. A foaming device in accordance with claim 7, wherein said circumferential portion includes a plurality of flexible fins separated by radial notches and said disk body forms the edge of the disk to which said flexible fins are fastened. 9. A foaming device in accordance with claim 1, wherein opposite the center of the body of the disk a seat designed to receive one end of said rod is formed to provide a snap engagement. 10. A foaming device in accordance with claim 1, wherein a graspable knob is formed in a single piece with the end of the rod protruding above said cover. 11. A foaming device in accordance with claim 1, wherein said cover has an elongated portion adjacent the hole in which the rod extends such that a user can hold said elongated portion when the drink has been prepared. 12. A foaming device for the preparation of coffee and milk, cappuccinos or similar drinks, the device comprising: a cover for closing an opening of one of a plurality of substantially cylindrical containers, each container containing a liquid, said cover defining a rod receiving space; a rod extending axially through said rod receiving space in said cover such that a portion of said rod extends to a spaced location from said cover; a disk connected to said rod such that said disk is movable in an axial direction when said cover is attached to one of said containers, said disk extending in a direction perpendicular to said rod, said cover defining at least a first substantially concentric annular groove for contacting an upper edge of one of the containers having a first diameter greater than a diameter of said disk and a second substantially concentric annular groove for contacting an upper edge of another one of the containers having a second diameter less than said diameter of said disk, said disk having at least one mesh portion for forming an emulsion of air in said liquid contained in one of said containers, said disk having a flexible circumferential portion extending in a radial direction from an edge of said disk, said circumferential portion partially covering an opening defined between said edge of said disk and an internal wall of one of the containers having said first diameter, said circumferential portion bending when said disk is located within one of said containers having said second diameter. 13. A foaming device in accordance with claim 12, wherein said circumferential portion includes a plurality of flexible fins separated by radial notches. 14. A foaming device in accordance with claim 13, wherein said flexible fins are six in number. 15. A foaming device in accordance with claim 13, wherein said disk is round and the flexible fins form a circular crown around said disk. 16. A foaming device in accordance with claim 15, wherein the thickness of said circular crown is approximately equal to the difference between the radius of the widest annular groove and the radius of the narrowest annular groove with the diameter of the disk being slightly less than the diameter of the narrowest groove. 17. A foaming device in accordance with claim 12, wherein said mesh portions are formed opposite a plurality of windows formed in a body of the disk with the windows being elongated and arranged radially around the center of the disk. 18. A foaming device in accordance with claim 17, wherein said circumferential portion includes a plurality of flexible fins separated by radial notches and said disk body forms the edge of the disk to which said flexible fins are fastened. 19. A foaming device for the preparation of coffee and milk, cappuccinos or similar drinks, the device comprising: a cover for closing an opening of one of a plurality of substantially cylindrical containers having varying diameters, each container containing a liquid, said cover defining a rod receiving space; a rod extending axially through said rod receiving space in said cover such that a portion of said rod extends to a position located above said cover; a disk connected to said rod such that said disk is movable in an axial direction when said cover is attached to one of said containers, said disk extending in a direction perpendicular to said rod, said cover defining at least a first substantially concentric annular groove for contacting an upper edge of one of said containers and a second substantially concentric annular groove for contacting an upper edge of another one of said containers, said disk having at least one mesh portion for forming an emulsion of air in said liquid contained in one of the containers, said disk having a circumferential portion connected thereto, said circumferential portion being flexible such that said circumferential portion moves from a radial extending state to a bent state, said circumferential portion extending in a radial direction from an edge of said disk such that said circumferential portion partially covers an opening defined by said edge of said disk and an inner wall of one of the containers when said circumferential portion is in said radial extending state, said circumferential portion being in said bent state when said disk is located within one of said containers having a diameter that is less than a diameter of said disk with said circumferential portion. 20. A foaming device in accordance with claim 19, wherein said circumferential portion includes a plurality of flexible fins separated by radial notches.