CLOSURE ASSEMBLIES

摘要

A closure assembly comprising a hollow tubular outlet member and a cap fitting over the outlet member and rotatable relative thereto with the outlet member and cap having co-operating substantially conical end portions each having an aperture which can be selectively aligned or non-aligned by relative rotation of the cap and outlet member, a tubular portion adjoining with the conical end portion of the cap and located over the hollow tubular outlet member wherein one of such tubular portions has at least one formation directed towards the other tubular portion and co-operating with a cam surface on said other tubular portion said cam surface being shaped such that the conical end portions are urged axially into tighter engagement with each other during at least a part of the allowed rotation of the cap in a direction away