초록 ▼

A can for carbonated and non-carbonated beverages provided with an opening system comprising a tearable tongue (22) defined by a tearing invitation score line in the outer surface of the upper wall of the can and with a tearing device associated to the tearable tongue and aimed at tearing the tearab

A can for carbonated and non-carbonated beverages provided with an opening system comprising a tearable tongue (22) defined by a tearing invitation score line in the outer surface of the upper wall of the can and with a tearing device associated to the tearable tongue and aimed at tearing the tearable tongue and at opening the can. The tearing device for the tearable tongue (22) is comprised of two tongues superimposed to one another, a first tongue (30) attached to the outer surface of the upper wall of the can, intended to tear the tearable tongue (22) outwardly of the can, and a second tongue (31), attached to the tearable tongue (22), intended to start tearing of the tearable tongue (22) inwardly of the can.

대표청구항 ▼

1. A can for carbonated and non-carbonated beverages provided with an opening system comprising a tearable tongue (22) defined by a tearing invitation score line in the outer surface of the upper wall of the can and having an end apex point at which tearing is started and with a tearing device assoc

1. A can for carbonated and non-carbonated beverages provided with an opening system comprising a tearable tongue (22) defined by a tearing invitation score line in the outer surface of the upper wall of the can and having an end apex point at which tearing is started and with a tearing device associated to said tearable tongue and aimed at tearing said tearable tongue and at opening the can,characterised in that said tearing device for the tearable tongue (22) is comprised of two tongues superimposed to one another, a first tongue (30) attached to the outer surface of the upper wall of the can, intended to tear said tearable tongue (22) outwardly of said can, and a second tongue (31), attached to said tearable tongue (22), intended to start tearing of said tearable tongue (22) inwardly of the can. 2. The can for beverages according to claim 1, characterised in that said score line by which said tearable tongue is defined is complete, so as to allow a complete detachment of said tearable tongue from said can.3. The can for beverages according to claim 1, characterised in that said score line by which said tearable tongue is defined is partial, so that it does not allow a complete detachment of said tearable tongue from said can, but only allows it to be lifted.4. The can for beverages according to claim 1, characterised in that said first tearing tongue (30) has a ring like elongated shape, with a hole (33) having a profile corresponding to the shape of the tearable tongue 22 scored in the outer surface of the upper wall of the can and two side segments.5. The can for beverages according to claim 4, characterised in that the outer dimensions of said first tearing tongue (30) are larger than the outer dimensions of said tearable tongue (22), so as to protect the user against any contact with its outer sharp edge.6. The can for beverages according to claim 1, characterised in that a rigid integral connection between the first tearing tongue (30) and the outer surface of the upper wall of the can is realised by means of a technique selected among spot welding (32), line welding, pressure or cold upsetting, thermocompression or gluing, so as to guarantee in any case a suitable tearing of the tearable tongue.7. The can for beverages according to claim 4, characterised in that said second tearing tongue (31) has a ring like shaped portion, with two tabs (34,35) that can be superimposed to the side segments of said first tearing tongue (30), and a beak point portion (36) adapted to act upon the front edge of the tearable tongue (22) scored in the outer surface of the upper wall of the can.8. The can for beverages according to claim 7, characterised in that said second tearing tongue (31) is attached to said tearable tongue (22) at a position (37) approximately corresponding to said two tabs (34, 35) and it is realised by means of a technique selected among spot welding, line welding, pressure or cold upsetting, thermocompression or gluing.9. The can for beverages according to claim 8, characterised in that the attachment point (37) of said second tearing tongue (31) to the can is aligned with and intermediate between said ring like portion and its beak point portion (36), so that it acts as a fulcrum of a centrally fulcrumed lever.10. The can for beverages according to claim 9, characterised in that the end apex point of the tearable tongue (22), the attachment point (37) of the second tearing tongue (31) and the attachment point (32) of said first tearing tongue (30) are aligned and in that said attachment point (37) of said second tearing tongue is intermediate between said apex point of the tearable tongue (22) and said attachment point (32) of the first tearing tongue 30.11. A method of opening a can for carbonated and non-cabonated beverages having an upper wall with a center point and a periphery, provided with an opening system comprising a tearable tongue (22) defined by a tearing starting score line in the outer surface of the upper wall of the can and having an elongated shape with an end apex point, characterised in that it comprises the following steps:providing a first tongue (30) attached to the outer surface of the upper wall of the can at an attachment point (32), providing a second tongue (31) having a ring like portion, superimposed upon said first tongue (30) and attached to said tearable tongue (22) at an attachment point (37) and having a beak like point portion (36), said attachment point (37) of said second tongue being aligned with an intermediate between said end apex point of the tearable tongue (22) and the attachment point (32) of said first tongue (30), starting tearing of said tearable tongue (22) by lifting the ring like portion of said second tongue (31) and rotating it around its attachment point (37) to said tearable tongue (22), from the center point to the periphery of the upper wall of the can, so that its beak like point portion (36) pushes the tearable tongue (22) at its end apex point inwardly of the can, completing tearing of the tearable tongue (22) and opening the can by inversely rotating said first tongue (30) from the periphery to the center point of the upper wall of the can around its attachment point (32) to the upper wall of the can, thereby upwardly pushing said second tongue (31) superimposed thereupon.