Patent ID: 6139792
Filing Date: 2000-10-31
Classification: C21C,F27D

Abstract:
An oxygen lance assembly comprising:a head anda lance body,a plug part being formed on the lance body,a socket being formed in the head to receive the plug part and so form a plug and socket junction whereby the lance body and the plug part can quickly be exchanged, as a unit, by plugging and unplugging the plug part in the socket,sealing surfaces of the plug part being provided exclusively by a plurality of cylindrical peripherally extending axially spaced male mating surfaces and,sealing surfaces of the socket being provided exclusively by a plurality of cylindrical peripherally extending female mating surfaces spaced axially to cooperate one each with each male mating surface to separate passages for the transport of oxygen or coolant through the plug and socket junction,wherein annular sealing elements are mounted to be retained one each on each male mating surface of the plug to engage between cooperating male and female mating surfaces,whereby the plug and socket junction is tolerant of displacement and misalignment in the axial direction.