Patent EA-001350-B1 (EA)
Title: Closure cap for drink can
IPC: B65D51/24
Filed: 1998-05-26
Abstract: 1. A closure cap (2) for a cylindrical drink can (1), said can (1) comprising a top surface (4) provided with a tear-off or collapsible opening lid (5) surrounded by a top ring (6) with circular cross-section projecting outside the can (1), a base comprising a bottom ring (8) with circular cross-section for stacking similar cans (1, 1'), said bottom ring (8) enclosing a surface (7) curved inwards relative to the can (1), the closure cap comprises a peripheral skirt (9) capable of being clipped on the can (1) top ring (6) external periphery, and a central surface (100, 200, 300) bordered with a shoulder (101, 201, 301) linked to said peripheral skirt (9) top edge, characterized in that said shoulder (101, 201, 301) being arranged to co-operate with the inner and/or outer edge of another can (1') bottom ring (8'). 2. The closure cap according to claim 1, characterized in that the central surface (100, 200, 300) is situated at least in plane P, determined by the top ring of the shoulder (101, 201, 301) or above the plane P. 3. The closure cap according to claim 1 or 2, characterized in that the central surface (100, 200, 300) is situated at least in plane P, determined by the upper edge of the peripheral skirt (9), or above the plane P. 4. The closure cap according to claims 1 to 3, characterized in that the shoulder (101) limiting the central surface (100), and the top edge of the peripheral skirt (9) are linked by a plane annular flange (102), on both sides of which the shoulder (101) and the peripheral skirt (9) are located. 5. The closure cap according to claims 1 to 3, characterized in that the shoulder (201, 301) limiting the central surface (200, 300), and the upper edge of the peripheral skirt (9) are linked by the shoulder (202, 302), which is concentric to the shoulder (301) limiting the central surface (300) and arranged opposite to it, wherein said shoulders (201, 202; 301, 302) form a groove (203, 303) adjoining the peripheral skirt (9). 6. The closure cap according to claim 5, characterized in that the central surface (200), the shoulder (201) limiting said central surface (200), and arranged opposite it concentric shoulder (202), between which the groove (203) is formed, adjoining the peripheral skirt (9) are created in the process of stacking similar cans (1, 1') in the process of deforming the cap's bottom, made of a deformable material due to the pressure created by inserting the bottom ring (8') of one of cans (1') into the top ring (6) of a can (1) with a cap (2). 7. The closure cap according to claims 1 to 6, characterized in that the central surface (100, 300) is designed convex capable of being invertible. 8. The closure cap according to claims 1 to 7, characterized in that comprises at least one external peripheral projecting (11) and/or at least one radial plate. 9. The closure cap according to claims 1 to 8, characterized in that said cap is linked with the can via articulation on a ring (25) fixed to the can (1) and designed preferably as an integral piece with the cap. 10. The closure cap according to claims 1 to 8, characterized in that the peripheral skirt (9) is provided with a continuous or interrupted bend (17), protruding inwards, said bend is mounted under the top ring (6) edge, when placing the cap on the can (1). 11. The closure cap according to claim 10, characterized in that the bend (17) is formed thanks to  the peripheral skirt (9) having the shape of a truncated cone, the bigger base of the truncated cone corresponds to the cap (2) diameter, and the smaller base of the truncated cone corresponds to the free end of the peripheral skirt (9). 12. The closure cap according to claims 1 to 11, characterized in that is provided with at least one radial channel for gas release, preferably formed by a slot opposite the front side of the upper ring of the can (1). 13. The closure cap according to claims 1 to 12, characterized in that is provided with a peripheral ring for retaining an advertising carrier (15) in the form of a disk designed to permit releasing of the said carrier (15) by pressing upon the top side of the cap (2). 14. The closure cap according to claims 1 to 13, characterized in that the cap is opaque. 15. The closure cap according to claims 1 to 13, characterized in that the cap is transparent or semi transparent. 16. The closure cap according to claims 1 to 15, characterized in that a certain pattern is applied on the cap's outer or inner surfaces by the method of imprinting, transferring or gluing. 17. The closure cap according to claims 1 to 16, characterized in that the cap is a part made of a plastic material produced by pressure moulding or by thermal stamping. 18. Use of a closure cap according to claims 1 to 17, for retaining advertising and/or promoting the sale carrier in the form of printing matter, and/or a sample, and/or a subject placed inside the upper ring (6) of a metal can (1) with beverage.