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| Number | Title | Issue Date |
| 6478846 | Method and device for injecting reducing agents in a shaft furnace The invention relates to a method for injecting reducing agents into a shaft furnace in which the reducing agent is transported within a pneumatic delivery stream to the shaft furnace according to the flowing steps; a) dividing the delivery stream into a ... | 11/12/2002 |
| 6245122 | Apparatus and method for reclaiming scrap metal An apparatus and method for reclaiming contaminated scrap metal, more particularly an improved reverberatory furnace designed for melting scrap. The amount of hydrocarbons volatilized from the melting of contaminated scrap is measured and the fumes are pa... | 06/12/2001 |
| 4643402 | System for producing a regulated atmosphere for a high-temperature process The invention provides a method and apparatus for producing a regulated atmosphere in a heat treating furnace. In the preferred embodiment, liquid methanol is heated sufficiently to cause it to dissociate into hydrogen and carbon monoxide, i.e. the combus... | 02/17/1987 |
| 4436289 | Method and apparatus for controlling the atmosphere in a carburizing furnace utilizing a cascaded valving system An automatic control for a multi-zone push type carburizing furnace capable of controlling the flow of either an endothermic gas atmosphere or a nitrogen methanol atmosphere at both high and low flow rates and during normal and suspend carburizing utilize... | 03/13/1984 |
| 4395021 | Vertical continuous annealing furnace and its operating method A vertical continuous annealing furnace has two furnace covers vertically spaced away from each other. Each furnace cover is laterally slidable with respect to the furnace proper and has two long narrow openings through which strip is passed. There is a r... | 07/26/1983 |
| 4376528 | Steel pipe hardening apparatus An apparatus for hardening a steel pipe by quenching it with cooling water, comprises a cylindrical assembly including a casing and a cover, said casing being removably mated with said cover so that said cylindrical assembly may be selectively opened or c... | 03/15/1983 |
