1. Field of the Invention
The present invention relates to oxygen gas lances which are used in a steel making process which is conducted in a B.O.F. furnace vessel.
Specifically the invention relates to a quick disconnect lance arrangement.
2. Description of the Prior Art
Patents of the prior art include U.S. Pat. No. 3,620,455 Nov. 16, 1971; 3,827,632 Aug. 6, 1974; 3,912,244 Oct. 14, 1975; RE: 28,769 Apr. 13, 1976 and 3,972,515 Aug. 3, 1976. The present invention is an improvement over these patents.
USPTO Backgrounds
USPTO Backgrounds