The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 1990
Filed:
Jun. 17, 1988
Kenneth W Bates, Calow, GB;
Injectall Limited, Sheffield, GB;
Abstract
Gas injection into a metal melt, accompanied if desired by powdered or solid treatment substances, is by way of a nozzle inserted into the wall of a melt-containing vessel. The nozzle bore initially has a stopper at its inner end and a delivery pipe smaller than the bore is movable therein. Before injection, the pipe and bore adjacent the stopper are cooled by gas. By thrusting the pipe against the stopper while sufficient gas flow and pressure is maintained, the stopper is dislodged and the gas will enter the melt as a jet which leaves the pipe at a injection cooling, then when injection is completed allowing the melt to enter and rapidly freeze locking the pipe safely in the bore.