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US 5,083,416 AGranted
Method and apparatus for introducing a sliding lid or seal into a tubular cylindrical body
AssigneeCebal
InventorsBernard Schneider, Roland Florini
Life of this patent
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Abstract
The invention discloses a method of and apparatus for inserting a lid, or plug closure, in a container body by use of a thrust member bearing on the back surface of the lid in which the thrust member is applied in such a way as to obtain a creasing of the lid when the pressure of the air trapped in the said body increases, this air then escaping between the lid and the container body. The invention is applicable to the fields of cosmetics, pharmaceuticals, hygiene products and foodstuffs.
Claims10
A method for sealing an open end of an otherwise closed tubular cylindrical body, comprising the steps of:
- inserting within said open end a sliding tight seal having a front face oriented toward said body, and a back face oriented away from said body;
- and
- bearing on said back face with a thrust means to cause said seal to slide within said open end in a direction toward said body, closing said body and decreasing the volume of said closed body, thus increasing the pressure of air trapped within said closed body;
- said thrust means bearing on said back face in a manner which is circumferentially non-symmetrical with respect to the seal and which produces on the seal a force substantially along an axis in the plane of the seal so as to cause a folding deformation of said sliding tubular seal along said axis as the pressure of the trapped air increases, said folding deformation allowing air to escape between said seal and said body.
1 more element
Dependencies are inferred from the claim text.