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| Number | Title | Issue Date |
| 5528012 | Apparatus and method for starting a plasma arc treatment system An ignitable material is positioned in contact with a slag contained within a plasma arc treatment system having an electrode and an electrical ground. The slag is initially at a temperature below a conducting temperature at which the slag will conduct el... | 06/18/1996 |
| 5410121 | System for feeding toxic waste drums into a treatment chamber A drum is introduced into an interlock chamber and the interlock chamber is sealed. A door leading to a transition chamber is opened and the drum is moved into the transition chamber. The transition chamber is contained within a spool valve which includes... | 04/25/1995 |
| 5408494 | Material melting and incinerating reactor with improved cooling and electrical conduction A reactor for incinerating and melting materials such as waste and/or toxic materials has a containment housing inside of which an upright, open-ended drum is rotatably mounted. The drum is lined with refractory, forms a central discharge opening for the ... | 04/18/1995 |
| 5239162 | Arc plasma torch having tapered-bore electrode An arc plasma torch having a tapered-bore electrode provides a long, columnar plasma arc. The torch includes a torch housing, a tapered-bore electrode, a gas-constricting nozzle, and a swirling gas flow generator. The electrode is mounted within the housing an... | 08/24/1993 |
| 5226949 | Method and apparatus for removal of floating impurities on liquid A housing has a pair of chambers separated by a vertical wall. A hearth is on one side of the wall in the housing and is adjacent to an orifice which allows a stream of material, such as molten metal to pass from one chamber to the other. A gas is caused ... | 07/13/1993 |
| 5183498 | Gas barrier for the refining superalloy The disclosure is made for the use of a hearth for receiving metals to be melted and exposing the molten metals to the furnace atmosphere with the upper surface of the molten metal free to float impurities such as oxides, carbides, or other undesirable ma... | 02/02/1993 |
| 5136137 | Apparatus for high temperature disposal of hazardous waste materials An improved method and plasma torch incinerator or reactor in which the incinerator uses a rotating, materials-receiving drum or chamber for receiving the hot plasma of a plasma torch. By properly constructing the inner surface of the rotatable drum and b... | 08/04/1992 |
| 5005494 | Apparatus and method for high temperature disposal of hazardous waste materials An improved method and plasma torch incinerator or reactor in which the incinerator uses a rotating, materials-receiving drum or chamber for receiving the hot plasma of a plasma torch. By properly constructing the inner surface of the rotatable drum and b... | 04/09/1991 |
| 4861001 | Melting retort and method of melting materials An improved melting retort and method of melting materials wherein the retort allows for easier material feeding capability with a wider range of types of materials while minimizing the movement of any unmelted materials to the pouring lip of the retort. ... | 08/29/1989 |
| 4795874 | Saw blade with non-magnetic inserts for electric arc saw and method of making same An electric arc saw blade having improved magnetic characteristics and economy including a metallic disk composed of a high strength, electrically conductive material having secured to its periphery a plurality of non-magnetic inserts composed of a second... | 01/03/1989 |
| 4770109 | Apparatus and method for high temperature disposal of hazardous waste materials An improved plasma torch incinerator or reactor in which the incinerator uses a rotating, materials-receiving drum or chamber for receiving the hot plasma of a plasma torch. By properly constructing the inner surface of the rotatable drum and by varying t... | 09/13/1988 |
| 4637032 | Rotary seal for movable shaft to eliminate breakaway friction In apparatus of the type having a shaft which moves axially or is rotated, a rotary seal on the shaft for eliminating the breakaway friction between the shaft and its mount. The seal includes an inner sleeve surrounding the shaft and rotatable thereon, th... | 01/13/1987 |
| 4510368 | High speed electric arc saw and method of operating same An electric arc saw and a method for operating the saw for cutting or slitting metallic objects by melting a narrow kerf into the object. The method provides for determining the minimum threshold current that is necessary to initiate the cutting operation... | 04/09/1985 |
| 4463242 | High speed electric arc saw and method of operating same An electric arc saw and a method for operating the saw for cutting or slitting metallic objects by melting a narrow kerf into the object. The method provides for determining the minimum threshold current that is necessary to initiate the cutting operation... | 07/31/1984 |
| 4401875 | Saw blade for high speed electric arc saw An electric arc saw and a method for operating the saw for cutting metallic objects by melting a narrow kerf into the object are disclosed. The method provides for determining the minimum cutting current. The blade is advanced through the object at a spee... | 08/30/1983 |
| 4399344 | Method of operating high speed electric arc saw An electric arc saw and a method for operating the saw for cutting metallic objects by melting a narrow kerf into the object are disclosed. The method provides for determining the minimum cutting current. The blade is advanced through the object at a spee... | 08/16/1983 |
| 4331828 | Apparatus for mounting a crucible within an electric furnace A rotatable mounting for the crucible of an electric induction furnace is disclosed. The mounting apparatus includes an access cylinder rotatably mounted within a tubular flange on one wall of the furnace enclosure. Positive and negative slip ring assembl... | 05/25/1982 |
| 4288116 | Apparatus for fastening flanged tubular members A method and apparatus for aligning and fastening open ended tubular members, such as pipes, tanks, and other cylindrically shaped fluid enclosures, which have radially outwardly protruding flanges extending around the circumference of the open ends. The ... | 09/08/1981 |
