| Patent Number |
Title Of Patent |
Date Issued |
| RE31725 |
Fused aluminum oxide abrasive grain containing reduced titanium oxide |
November 6, 1984 |
| A fused abrasive grain, useful for inclusion in coated abrasives and bonded abrasives, consists essentially of alumina; titanium oxide containing from about 0.42 to about 0.84% titaniun, by weight of the abrasive grain, present as a reduced titanium oxide having an average oxidation stat |
| RE31128 |
Fused aluminum oxide abrasive grain containing reduced titanium oxide |
January 18, 1983 |
| A fused abrasive grain, useful for inclusion in coated abrasives and bonded abrasives, consists essentially of alumina; titanium oxide containing from about 0.42 to about 0.84% titanium, by weight of the abrasive grain, present as a reduced titanium oxide having an average oxidation stat |
| H48 |
Method of making a ceramic article having open porous interior |
April 1, 1986 |
| An open porous ceramic article having an outer skin and an open porous interior. The interior has a continuous matrix of ceramic material which includes a plurality of chambers of predetermined shape and size distributed throughout the matrix. The chambers are in communication with o |
| D273414 |
Shell for induced draft cooling tower |
April 10, 1984 |
|
| 5449395 |
Apparatus and process for the production of fire-refined blister copper |
September 12, 1995 |
| Fire-refined blister copper is produced from copper concentrate by a process comprising:A. melting and oxidizing the copper concentrate in a smelting furnace to produce molten matte and slag, and to separate one from the other;B. removing the molten matte from the smelting furnace;C. solidif |
| 5443622 |
Hydrometallurgical processing of impurity streams generated during the pyrometallurgy of copper |
August 22, 1995 |
| Impurity streams generated during the pyrometallurgy of copper are hydrometallurgically processed at ambient pressure for recovery of primary values in an energy-efficient manner and with the capture and conversion of metallic impurities to states that are acceptable for disposal into th |
| 4761025 |
Method and apparatus for distributing the load between sections of a vertical column |
August 2, 1988 |
| The present invention relates to a method and apparatus for sharing a load between individual sections of a vertical column. Although particularly useful in conjunction with glass lined steel columns, the present load distribution means is also useful in other vertical columns which are |
| 4736789 |
Apparatus and method for continuous casting of metallic strands at exceptionally high speeds usi |
April 12, 1988 |
| An oscillating cooled mold assembly for the continuous, high-speed casting of metallic strands, especially upcasting strands of copper alloys such as brass, has a hollow die in fluid communication with a melt typically held in a casting furnace. A coolerbody surrounds the die in a tight- |
| 4711296 |
Apparatus for avoiding thermal stresses in glass lined vessels |
December 8, 1987 |
| The present invention minimizes the problem of thermal stresses in a glass lined vessel by providing a heat transfer sump in the bottom portion of the vessel. A heat transfer compartment is formed by enclosing the annular space between the exterior portion of the skirt and the bottom por |
| 4707583 |
Plasma heated sintering furnace |
November 17, 1987 |
| A furnace for the sintering of refractory or ceramic materials using plasma heated gases. The furnace comprises a sintering chamber with strategic positioning of the plasma torch inlets and exhaust outlet, a furnace temperature controlling device during sintering so that the article bein |
| 4698481 |
Method for preventing decomposition of silicon carbide articles during high temperature plasma f |
October 6, 1987 |
| A system to prevent, retard or reverse the decomposition of silicon carbide articles during high temperature plasma sintering. Preferably, the system comprises sintering a silicon carbide refractory or ceramic green body in a closed sintering environment, such as a closed tube, with stra |
| 4693988 |
Single phase silicon carbide refractory |
September 15, 1987 |
| The present invention provides a method of pressureless sintering silicon carbide in which the silicon carbide starting material is in the form of a multimodal composition, or mixture, of coarse and submicron particles. The present sinterable silicon carbide mixtures consist of separate |
| 4683938 |
Method and apparatus for the continuous production of strip using oscillating mold assembly |
August 4, 1987 |
| Disclosed is an apparatus and method for the integrated, continuous, high speed manufacture of metallic strip, especially brass, from a melt. The apparatus comprises a chilled casting mold in liquid communication with a melt, means for drawing a rod through the mold at a constant rate an |
| 4683516 |
Extended life capacitor and method |
July 28, 1987 |
| An extended life capacitor is disclosed in which an enclosing body is made from a tantalum can and tantalum cap and enclosing a plurality of double layer capacitor cells. Each of the capacitor cells includes a conductive material, such as activated carbon, with an aqueous electrolyte the |
| 4678577 |
Seamless vessel for self contained filter assembly |
July 7, 1987 |
| A cylindrical pressure vessel housing a filter media wherein the vessel is formed from a tubular thermoplastic pipe portion having opposite conical shaped end portions integrally formed with molded internal base portions with one base portion having integrally molded thereto the filter m |
| 4676940 |
Plasma arc sintering of silicon carbide |
June 30, 1987 |
| A process for the sintering of silicon carbide refractory or ceramic articles using plasma arc gases. In the process of the invention, a formed silicon carbide article is heated in a plasma fired furnace to a sintering temperature of between 2000.degree. C.-2500.degree. C. at a heating r |
| 4666775 |
Process for sintering extruded powder shapes |
May 19, 1987 |
| An improved process for sintering extruded powder shapes comprising drying or calcining an extruded shape in a microwave furnace and rapid sintering the shape in a plasma fired furnace. Alternatively, calcining or drying may take place within a furnace heated by the plasma furnace's exha |
| 4659022 |
Production of silicon carbide with automatic separation of a high grade fraction |
April 21, 1987 |
| Method of producing silicon carbide and of automatically separating a high grade fraction thereof using magnetic separation techniques. In the method of the invention, a silicon source, a carbon source and a ferromagnetic element source are admixed and the admixture is heated from the ce |
| 4658346 |
Apparatus for co-generation of electric power |
April 14, 1987 |
| Apparatus for converting relatively high, variable frequency, variable amplitude electrical power into substantially constant amplitude and substantially constant, relatively lower frequency power of a preselected waveform. The power source signal is divided into a number of varying |
| 4651894 |
Jacket system for an enameled or glassed vessel |
March 24, 1987 |
| A jacket for an enameled vessel with a lower outlet nozzle is described comprising an upper weld ring welded along the outer circumference of the vessel, and comprising a lower weld ring surrounding the lower outlet nozzle, and also the jacket as such. The upper weld ring is conically |
| 4649002 |
System for preventing decomposition of silicon carbide articles during sintering |
March 10, 1987 |
| A system to prevent, retard or reverse the decomposition of silicon carbide articles during high temperature plasma sintering. Preferably, the system comprises sintering a silicon carbide refractory or ceramic green body in a closed sintering environment, such as a covered crucible, with |
| 4645476 |
Work conveyor sprocket and link assembly |
February 24, 1987 |
| A work conveyor sprocket and link assembly includes a sprocket having a body member. The body member includes a plurality of radially extending teeth connected by arcuate root portions. The body member further includes shoulder portions which extend outwardly from the sides of the body |
| 4640848 |
Spray-applied ceramic fiber insulation |
February 3, 1987 |
| A thermal insulation is formed by simultaneously spraying ceramic fibers and a binder at a surface to be covered. An aqueous binder is prepared prior to application to the fiber during the spraying operation. The binder includes an organic component which provides necessary wet and g |
| 4637559 |
Sand lump crushing device |
January 20, 1987 |
| This relates to a device for crushing sand lumps. The device includes a tub which is resiliently mounted and is provided with means for vibrating the same in a generally vertical direction parallel to a rear wall of the tub. The tub rear wall is hollow and is provided on the inner face w |
| 4621017 |
Corrosion and wear resistant graphite material and method of manufacture |
November 4, 1986 |
| The invention provides a composite carbon or graphite having desirable properties such as corrosion and wear resistance. The invention combines a graphite substrate with a protective porous zone of silicon carbide. The whole body of graphite plus silicon carbide then is infiltrated with |
| 4617511 |
Electrode probe assembly for glass lined metal vessels |
October 14, 1986 |
| An electrode probe assembly for monitoring and finding fault in the glass lining of metal vessels, pipes or the like, characterized by a cup-shaped electrode with an insulated stud inserted through a hole in the wall of a mounting member. An insulating gasket insulates the electrode from |
| 4617232 |
Corrosion and wear resistant graphite material |
October 14, 1986 |
| The invention provides a composite carbon or graphite having desirable properties such as corrosion and wear resistance. The invention combines a graphite substrate with a protective porous zone of silicon carbide. The whole body of graphite plus silicon carbide then is infiltrated with |
| 4614064 |
Method and apparatus for cleaning workpieces |
September 30, 1986 |
| A method and apparatus for cleaning a succession of workpieces such as automobile engine blocks includes a first cleaning mechanism wherein cleaning media such as steel shot is directed against the workpieces. After being discharged from the first cleaning mechanism, the workpieces a |
| 4612971 |
Method and apparatus for the continuous production of strip using oscillating mold assembly |
September 23, 1986 |
| Disclosed is an apparatus and method for the integrated, continuous, high speed manufacture of metallic strip, especially brass, from a melt. The apparatus comprises a chilled casting mold in liquid communication with a melt, means for drawing a rod through the mold at a constant rate an |
| 4612087 |
Method of producing seamless ceramic fiber composite articles |
September 16, 1986 |
| The invention relates to a ceramic fiber felt or mat having one portion comprising a high temperature resistant ceramic fiber and another portion of lower temperature resistant ceramic fiber. The two portions are joined seamlessly by an intermingling and intimate relationship of the two |
| 4610934 |
Silicon carbide-to-metal joint and method of making same |
September 9, 1986 |
| A silicon carbide-to-metal joint includes a thin layer of metal adherent to the ceramic material, a compliant layer of metal overlying the thin metal layer and a brazing alloy in contact with the metal to which the ceramic material is joined.A method for preparing a silicon carbide surfa |
| 4607254 |
Flow detector |
August 19, 1986 |
| A flow sensor to detect changes in the mass flow per unit time of pneumatically conveyed particles within a system. The flow sensor or detector includes a conduit segment formed of a hard material so that a wall of the segment will vibrate due to the impacting of the particles therea |
| 4601583 |
Multi-hubbed separable blade agitators |
July 22, 1986 |
| What is disclosed is a multi-hubbed, separable blade agitator assembly wherein the exterior surfaces of the hubs of each agitator blade as well as the exterior surface of the drive shaft are coated with glass and the hubs are interference fitted to the drive shaft in glass-to-glass surfa |
| 4600443 |
Process for removing surface oxides from a copper-base alloy |
July 15, 1986 |
| Surface oxides, such as copper, zinc and aluminum oxides, are effectively removed from copper-base alloys by a process comprising:(a) contacting the alloy surface with an aqueous solution containing potassium ions, e.g. a solution prepared by dissolving potassium hydroxide in water; and( |
| 4598899 |
Light gauge metal scrap melting system |
July 8, 1986 |
| Disclosed is a system for remelting light gauge scrap metals which includes a remelting furnace with separate heating and melting chambers and pump means for inducing circulation of molten metal between the two. Also included are auger means adapted to include light gauge "floating" scra |
| 4598675 |
Components for internal combustion engines |
July 8, 1986 |
| The present invention relates to improvements in internal combustion engines by the utilization of sintered silicon carbide for the fabrication of certain engine components wherein the silicon carbide starting material used to produce the sintered components is in an ultra-fine form. The |
| 4596716 |
Porous silicon nitride semiconductor dopant carriers |
June 24, 1986 |
| New porous semiconductor dopant carriers are disclosed together with a method for the diffusion doping of semiconductors by the vapor phase transport of an n or p type dopants, such as phosphorus, arsenic, antimony, boron, gallium, aluminum, zinc, silicon, tellurium, tin and cadmium |
| 4595614 |
Method and apparatus for applying internal coatings to vessels |
June 17, 1986 |
| The problem of distortion in the shape of the vessel by simultaneous heating and rolling at high temperatures is remedied by adding shape retaining, firing rings to the vessel. Firing rings are rings spacedly attached to the periphery of the vessel to maintain the vessel out of direc |
| 4595487 |
Sensing probe holder system |
June 17, 1986 |
| The present invention includes a system for mounting a sensor probe through the wall of a chemical vessel or other fluid container such that a sensing element can be located within. The system includes means for maintaining the sensing probe within the vessel in a fluid-tight, elevated |
| 4578363 |
Silicon carbide refractories having modified silicon nitride bond |
March 25, 1986 |
| A refractory that is highly resistant to sequential steam oxidation and molten alkali attack is formed by reaction nitriding a mixture of silicon carbide grain, silicon metal and aluminum metal. The refractory is suitable as a blast furnace lining. |
| 4575047 |
Ceramic to metal junction and method of making same |
March 11, 1986 |
| A ceramic part having one of a boss projecting therefrom or a bore therein is joined to a metal part having a complementary boss or bore. The ceramic and metallic parts overlap one another such that the boss is within the bore when assembled. A metallic insert is bonded to the ceramic pa |
| 4566230 |
Impact blasting system for etching metal surfaces |
January 28, 1986 |
| Apparatus for etching a metal surface utilizes a specially shrouded centrifugal throwing wheel to effect a uniform, non-pulsating application of very fine, lightweight, impact blasting media. The resulting etched finish is of a fine-grained quality suitable for use in lithography. A |
| 4565334 |
Electrohydraulic drive for process line winders, unwinders and other equipment |
January 21, 1986 |
| An electrohydraulic drive for process line equipment, especially a spooler that winds and pays out an indefinite length of metallic strand, varies the output torque of a hydraulic motor by controlling its displacement and the pressure differential between its inlet and outlet. A valve co |
| 4565035 |
Impeller even discharge apparatus |
January 21, 1986 |
| A throwing wheel assembly for providing an even discharge of impact blast material along the face of a vane is disclosed herein. An impeller positioned in a non-parallel relationship to the outer impeller casing is also provided in a spatial relationship which aids in providing an even |
| 4561220 |
Portable abrasive throwing wheel device |
December 31, 1985 |
| This relates to a portable abrasive throwing wheel device or abrasive blasting device which is utilized for blasting castings and the like to effect the cleaning thereof. The portable device is of such a construction whereby its total weight is on the order of 100 pounds and is so suspen |
| 4559312 |
Sintering or reaction sintering process for ceramic or refractory materials using plasma arc gas |
December 17, 1985 |
| A process for sintering or reaction sintering ceramic or refractory materials with hot plasma gases. The hot plasma gases are produced by injecting a combined primary plasma arc with a secondary gas stream directly into a reaction furnace. The secondary gas stream is tangentially inj |
| 4559244 |
Composite refractory foams |
December 17, 1985 |
| Non-oxide refractory foams, possessing controlled permeability and uniformity, are prepared by impregnating an organic polymer foam material with a fluid, particulate slurry of a first refractory material, drying, applying to the dried, impregnated material a second refractory material |
| 4540183 |
Lined gasket or sealing insert and method of making same |
September 10, 1985 |
| A method for production of lined gaskets or gasket inserts with which a pasty substance is arranged between the sealing surfaces (or correspondingly developed forms) and separated from these by two external layers, and hardened between the form-producing sealing surfaces. The pasty s |
| 4538543 |
Apparatus for applying internal coatings in hot vessels |
September 3, 1985 |
| The present apparatus facilitates feeding a particulate vitreous material, such as glass or enamel, into a horizontally rotating tubular article, such as a tank or vessel, heated to the fusion point of the vitreous material, usually temperatures of 1500.degree. F. or above, to coat the |
| 4536018 |
Rubber-backed expansion joint |
August 20, 1985 |
| An expansion joint for connecting pipe ends includes a fluorocarbon polymer tube having a reinforcing fabric embedded within it. The ends of the tube have radially extending flanges which are adapted to be in sealing relationship with the pipe ends. The tube has an annular arch spaced |
