Pechiney

Jean-Baptiste Vicchi

Bernard Schneider

A The invention discloses an assembly consisting of a head ( ) and an overcap ( ), the head having a cylindrical neck provided with a helical screw thread ( ), the overcap having a cylindrical skirt ( ) provided with a thread ( ) matching the neck thread ( ). The overcap carries an axial plate ( ) radially flexible and circumferentially rigid. The neck base ( ) is provided with at least an opening stop ( ), and at least a closure stop ( ), of lesser height. When the overcap ( ) is screwed on the head for mounting the assembly, the free end of the axial plate is urged into contact with a first wall ( ) of the opening stop ( ) and the axial plate whereof the free end is urged by a centrifugal motion, is elastically deformed then, folds down towards the neck in a space between the opening ( ) and closure ( ) stops, its displacement being thereby restricted.

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Sainte Menehould, France

Jean-Baptiste Vicchi