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Patent Searching and Data


Title:
A LID FOR A PRESERVING-JAR
Document Type and Number:
WIPO Patent Application WO/2001/051364
Kind Code:
A1
Abstract:
Lid (2) for a container (1), such as a can, in which an opening means (3) projects from the surface and incisions (4) start from the opening means, the lid being torn along the incisions when the container is opened. A press rim (5) folded upwards from the lid (2) starts in the vicinity of the opening means (3), the incision (4) being torn by pressing the press rim (5) down, after which the lid (2) can be removed from the container by lifting with the opening means.

Inventors:
MAEKINEN MAURI (FI)
Application Number:
PCT/FI2000/001107
Publication Date:
July 19, 2001
Filing Date:
December 18, 2000
Export Citation:
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Assignee:
MAEKINEN MAURI (FI)
International Classes:
B65D17/28; B65D; (IPC1-7): B65D17/28
Foreign References:
US3929251A1975-12-30
US4125204A1978-11-14
US4465203A1984-08-14
US4593834A1986-06-10
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Claims:
Claims
1. Lid (2) for a container (1) such as a can, in which an opening means (3) projects from the surface and incisions (4) start from the opening means, the lid being torn along the incisions when the can is opened, characterised in that a press rim (5) folded upwards from the lid (2) starts in the vicinity of the opening means (3) and follows the incision (4), the incision (4) being torn by pressing the press rim (5) down, after which the lid (2) can be removed from the can by lifting with the open ing means.
2. A container as defined in claim 1, characterised in that the press rim (5) com prises an embossment (5) whose walls are substantially steep relative to the plane of the lid (2) and whose upper edge ends in the upper plane of the lid (2).
3. A container s defined in claim 1, characterised in that the press rim (5) com prises an embossment (5) whose walls are substantially steep relative to the plane of the lid (2) and whose upper edge continues back down to the initial plane of the lid, forming an elongated hollow fold.
4. A container as defined in claim 1, characterised in that the press rim (5) com prises aligned knobs (6) pressed upwards from the plane of the lid (2).
Description:
A lid for a preserving-jar This invention relates to the lid of a container, such as a can, in which an opening means projects from the surface and incisions start from the opening means, the lid being torn off along the incisions as the container is opened.

Cans are opened with a can opener, with which an opening cut is made in the lid along the rim of the can, and then the lid is removed. Current cans frequently com- prise a loop-like opening ring fastened to the lid, the lid being torn off the can along the incisions by lifting the ring with force. An opening system of this type requires very strong finger force.

The object of the invention is to eliminate the drawbacks mentioned above. The lid of the invention for a container, such as a can, is characterised in comprising a press rim folded upwards from the lid, starting from the vicinity of the opening means and following the incision, the incision being torn by pressing the press rim down, and then the lid can be lifted off the container by means of the opening means. It has been empirically and experimentally proved that lids are considerably easier to tear off by using force and pressing the lid downwards along the incision than by pulling the lid upwards. When the lid is pulled upwards using the opening ring, the inci- sions on both sides will be torn simultaneously. This requires twice the force re- quired for pressing the lid downwards along one edge. It is also considerably easier to exert force downwards, with the can placed on a worktop, for instance.

Various embodiments of the invention are defined in the dependent claims of the set of claims.

The invention will be explained below with reference to the accompanying draw- ings, in which figure 1 shows a can viewed obliquely from above, figure 2 shows a section along line 11-11 in figure 1, figure 3 shows a lid design of a second embodiment in the same section as in figure 2, figure 4 shows a portion of a can comprising a folded press rim of a second embodiment,

figure 5 shows a circular can viewed from above, figure 6 shows a can of the same type as in figure 1, with the opening means located in the corner, and figure 7 shows a can portion of yet another embodiment viewed from above.

An opening means 3 projects from the surface 2 of the can 1, incisions 4 starting from the opening means so that the lid is torn off along the incisions when the can is opened. A press rim 5 folded up from the lid starts in the vicinity of the opening means 3 and follows the incision 4, the incision 4 being torn by pressing the press rim 5 down, after which the lid 2 can be lifted off the container 1 by means of the opening means 3. Figure 3 shows how the press rim 5 comprises an embossment 5 whose walls are substantially steep relative to the plane of the lid 2 and whose upper edge ends in the upper plane 2 of the lid. Figures 1,2 and 5 show a press rim 5 comprising an embossment whose walls are substantially steep relative to the plane of the lid and whose upper edge continues back down to the initial plane of the lid, forming an elongated hollow fold. Figure 4 shows the press rim, which comprises aligned knobs 6 pressed upwards from the plane of the lid 2.

The can is opened by pressing down the opening means 3 so that the incisions 7 in the concave recess are torn. Then the press rim 5 is pressed down, so that the inci- sion 4 is torn along the cutting line 7. After this, the steep sides of the opening means are pressed together to form an opening knob. Then the cut lid is removed from the container by lifting with the opening knob 3. The operations mentioned above require notably less finger force than all of the opening methods known so far.