Lever ring with inclined flat web

Details Lever ring with inclined flat web Lever ring with inclined flat web

B - Operations, Transporting

65

D

B65D 17/50 (2006.01)

Patent

CA 2536081

The invention relates to a lever ring to be folded to a body (20), which receives a closure layer (1) that is laterally sealed onto the body and bridges an interior space of the lever ring. In the folded-onto state, said closure layer obturates the body (20). The lever ring comprises a peripheral flat strip (3a, 3b, 3c) which runs radially outwards into a lateral rim (2) of the lever ring. A peripheral groove (N1, N2, N3) extends between said lateral rim and the flat strip. The flat strip is suitable for the edge of the closure layer to be sealed thereon and extends relative to the plane of a closure layer (1) so sealed onto it in an angle (.alpha.1, .alpha.2, .alpha.3) which is different from zero. The lever ring is characterized by an increased retention force on the flat strip.

L'invention concerne une bague de couvercle destinée à être enchâssée sur un corps (20) et à recevoir une couche de fermeture (1) dont le bord est scellé sur la bague, cette couche de fermeture recouvrant l'espace intérieur défini par la bague et, en position enchâssée, obturant le corps (20). Selon l'invention, cette bague de couvercle comprend une partie jointive plate (3a, 3b, 3c) circulaire dans le prolongement de laquelle s'étend un bord périphérique (2) de la bague radialement vers l'extérieur, une rainure circulaire (N1, N2, N3) s'étendant entre ce bord périphérique et cette partie jointive. Le bord de la couche de fermeture peut être scellé sur ladite partie jointive plate, laquelle s'étend selon un angle (.alpha.1, .alpha.2, .alpha.3) différent de zéro par rapport au plan d'une couche de fermeture (1) ainsi scellée. Cette configuration permet d'accroître la force de rétention sur la partie jointive plate.

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