1
Robert Lance Cook, David Paul Brisco, R Bruce Stewart, Lev Ring, Andrei Filippov, Alan B Duell: Forming a wellbore casing while simultaneously drilling a wellbore. Shell Oil Company, Haynes and Boone, Todd Mattingly, May 17, 2005: US06892819 (94 worldwide citation)

An apparatus including a support member, the support member including a first fluid passage, a mandrel coupled to the support member, the mandrel including: a second fluid passage, a tubular member coupled to the mandrel, and shoe coupled to the tubular liner, the shoe including a third fluid passag ...


2
Downing James H, Kaiser Robert H: Method for promoting metallurgical reactions in molten metal. Union Carbide Corporation, McCarthy Frederick J, March 18, 1975: US3871872 (80 worldwide citation)

Method and apparatus for promoting metallurgical reactions in molten metal employing high speed stirring.


3
Bishop Jr Harry L: Process for production of stainless steel. Allegheny Ludlum, Giola Vincent G, Dropkin Robert F, December 17, 1974: US3854932 (76 worldwide citation)

A process is disclosed for the production of stainless steel wherein a chromium-containing melt suitable for producing stainless steel is blown with oxygen in an oxygen converter, and an inert gas is introduced through at least one tuyere in the bottom of the converter while the interior of the conv ...


4
Fenton C Koch: Apparatus for purifying molten metal. Watts Hoffmann Fisher & Heinke Co, September 28, 1982: US04351514 (73 worldwide citation)

An improved molten metal pump and gas injection apparatus comprising a submersible pump housing 10 enclosing a rotatable impeller 30, an impeller drive 12 supported above the housing and an elongate drive shaft 16 operatively connected to the impeller. Rotation of the drive shaft effects fluid flow ...


5
Ronald E Gilbert, George S Mordue: Melting metal particles and dispersing gas with vaned impeller. The Carborundum Company, Larry W Evans, David J Untener, Scott A McCollister, September 1, 1992: US05143357 (70 worldwide citation)

Metal particles are melted by mixing them with molten metal contained in a bath. A shaft-supported, rotatable impeller is immersed into the molten metal and rotated so as to establish a vortex-like flow of molten metal. Metal particles are deposited onto the surface of the molten metal in the vicini ...


6
Christopher J Withers, David W Pattle: Rotary device for treating molten metal. Foseco International, Nixon & Vanderhye, January 6, 1987: US04634105 (68 worldwide citation)

A rotary device for dispersing a gas in molten metal, for example argon in molten aluminum, contained in a vessel, comprises a hollow shaft and a hollow rotor fixedly attached to the shaft, the rotor having a plurality of vanes each extending from the shaft, or a location adjacent the shaft, towards ...


7
Paul V Cooper: Dispersing gas into molten metal. The Stemcor Corporation, Weston Hurd Fallon Paisley & Howley, February 6, 1990: US04898367 (66 worldwide citation)

Gas is dispersed into molten metal by immersing a shaft-supported impeller into the molten metal and by pumping gas through the shaft and out of the impeller. The impeller is in the form of a rectangular prism having sharp-edged corners that shear the gaas into finely divided bubbles. The particular ...


8
Fredrikson Bengt, Hellsing Sven, Folgero Kare: Channel-type induction furnace. Allmanna Svenska Elektriska Aktiebolaget, November 9, 1971: US3618917 (63 worldwide citation)

A channel-type induction furnace has one or more inductors, a bottom channel beneath the inductor or inductors and side channels connecting the bottom channel to the hearth. In the case of more than one inductor, there is also at least one central channel running between the inductors. Nozzles are p ...


9
Ronald E Gilbert, George S Mordue: Melting metal particles and dispersing gas and additives with vaned impeller. Metaullics Systems Co, Fay Sharpe Beall Fagan Minnich & McKee, May 10, 1994: US05310412 (62 worldwide citation)

Metal particles are melted by mixing them with molten metal contained in a bath. A shaft-supported, rotatable impeller is immersed into the molten metal and rotated so as to establish a vortex-like flow of molten metal. Metal particles are deposited onto the surface of the molten metal in the vicini ...


10
John R Gillespie: Apparatus for generating a vortex in a melt. Gillespie & Powers, Gravely Lieder & Woodruff, December 5, 1989: US04884786 (62 worldwide citation)

A furnace maintains metal in a molten condition as a melt, and part of the melt is exposed in a charging well where lightweight solid scrap is introduced into the furnance. A vortex generator imparts a vortex to the melt within the well, so that lightweight solid scrap is quickly submerged in the we ...



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