Insulated bottle for vacuum flask - has protective casing, glass ampoule, intermediate vessel holding ampoule and spout fixing ampoule to casing

摘要

An insulated bottle has a protective casing, a glass ampoule, an intermediate vessel holding the ampoule and fitting into the casing, and a spout fixing the ampoule to the casing. The intermediate vessel and casing are pref. of polypropylene. The spout pref. screws into the intermediate vessel and has studs clipped to a rib on the casing. The intermediate vessel pref. has a centring head in its base cooperating with a socket in the casing.