Jar with conical neck

Abstract

A jar, in particular for cosmetic creams, having a neck which externally and also at least partly internally is bounded by a conical surface of diameter decreasing towards the free edge of the neck from which there projects at least one spiral thread for the screwed closure of the jar by a lid, said thread having a height which increases towards the free edge of the neck such that its cusp is inscribable on a substantially cylindrical surface

1 . A jar for containing creamy substances, comprising a hollow body accessible through the opening of a neck projecting from the hollow body itself and bounding an aperture the inner diameter of which is less than the inner diameter of the hollow body, characterised in that said neck is externally and also at least partly internally bounded by a conical surface of diameter decreasing towards the free edge of the neck from which there projects at least one spiral thread for the screwed closure of the jar by a lid, said thread having a height which increases towards the free edge of the neck such that the cusp of the thread is inscribable on a substantially cylindrical surface