engaging a threaded ring clamped on the external periphery of the neck or wall

Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper > Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices > Threaded or like caps or cap-like covers secured by rotation > engaging a threaded ring clamped on the external periphery of the neck or wall

Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper (clamping or other pressure-applying devices for securing or retaining closure members B65D45/00) > Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices > Threaded or like caps or cap-like covers secured by rotation > engaging a threaded ring clamped on the external periphery of the neck or wall