| Patent Number |
Title Of Patent |
Date Issued |
| 4495797 |
Can end tester |
January 29, 1985 |
| An apparatus is disclosed for testing can ends for leakage. The apparatus includes a series of stations, including an entry station, one or more punishment stations, a testing station and an output station, means for transporting can ends from station to station within the apparatus and |
| 4491471 |
Composite pellet for use as a carbothermic reduction feed |
January 1, 1985 |
| A composite pellet for use as feed for a carbothermic alumina reduction furnace is disclosed. A carbonaceous core is surrounded by substantially carbon-free alumina shell. The resulting pellet has increased thermal and electrical stability in the reduction furnace. |
| 4486244 |
Method of producing superplastic aluminum sheet |
December 4, 1984 |
| The use of a sequentially applied warm working/cold working procedure in the conventional steps of preparing heat treatable superplastic alloys yields material which demonstrates substantially equiaxed fine grain structure and improved superplastic forming characteristics. |
| 4486242 |
Method for producing superplastic aluminum alloys |
December 4, 1984 |
| A method of forming superplastic aluminum is disclosed. The prior need for overaging prior to rolling is eliminated by rolling the aluminum beginning at a hot rolling temperature and ending at a warm rolling temperature. |
| 4473027 |
Apparatus for enrobing frozen confectionaries |
September 25, 1984 |
| A method and apparatus are disclosed for enrobing frozen novelty confectionaries, such as ice cream products. The products are passed beneath a waterfall of the enrobing material, with the conveying mechanism separating rows of confectionaries and aligning them with dams in the water |
| 4472819 |
Can counter |
September 18, 1984 |
| Apparatus for receiving, counting and compensating for aluminum can bodies is disclosed. The apparatus includes means for differentiating between aluminum and steel cans, means for storing accumulated can bodies and output means by which the customer is paid for the aluminum cans fed int |
| 4469537 |
Aluminum armor plate system |
September 4, 1984 |
| Aluminum-magnesium-manganese alloy cold rolled to produce armor plate with improved ballistic properties. |
| 4460541 |
Aluminum powder metallurgy |
July 17, 1984 |
| A process for making a workpiece suitable for being hot worked to produce a wrought metal poduct is described. Aluminum alloy powder is cold compacted and then heated in an inert environment to provide a sinter-sealed shape. The resultant workpiece may then be subjected to conventional p |
| 4450700 |
Method and apparatus for necking and flanging container bodies |
May 29, 1984 |
| A method and apparatus for necking and flanging container bodies are disclosed. One or more free-wheeling dies are rotated within a stationary outer die and are journeled for radial movement within the outer die. The open edge portion of a metallic can body is positioned between the dies |
| 4450063 |
Probe for alumina concentration meter |
May 22, 1984 |
| An improved probe for an alumina concentration meter is disclosed. The active anode and cathode surfaces of the probe lie on a common surface. A bath temperature measuring device is included within the probe. |
| 4450054 |
Alumina reduction cell |
May 22, 1984 |
| An improved alumina reduction cell is described in which the carbonaceous cathode includes refractory hard metal tiles projecting upwardly from the cell surface thereof, forming the true cathode surface and inert refractory sleeves imbedded in the cathode into which the refractory hard |
| 4438850 |
Membrane closure structure |
March 27, 1984 |
| A membrane for containers is disclosed. The membrane upon being sealed to the container can withstand the rigors of retort sterilization and at the same time provide a peelable opening structure for the container with a protective cover for heating the contents of the container. |
| 4436598 |
Alumina reduction cell |
March 13, 1984 |
| An improved alumina reduction cell is described in which the carbonaceous cathode includes refractory hard metal tiles projecting upwardly from the cell surface thereof, forming the true cathode surface, and inert refractory anode stops protecting the tiles from accidental contact by the |
| 4432279 |
Can flattener |
February 21, 1984 |
| A flattener for beverage cans is disclosed. The flattener comprises a rotating drum and a series of roller assemblies mounted in a converging arc with respect to the drum to provide a progressively decreasing nip between the roller assemblies and the drum between which the cans may be |
| 4429503 |
Insulated panel |
February 7, 1984 |
| An improved insulating panel for tank-like vessels, such as chemical reactors, precipitators and the like is disclosed. The outer surface of the panel is designed so that heat paths from the insulated structure are minimized. This is accomplished by means of a dual fastening system in |
| 4425374 |
Method of making electrical cable |
January 10, 1984 |
| A method is disclosed for substantially reducing shrink back of thermosetting materials from electrical cable. The method comprises reheating the cable, after curing of the thermosetting material and cooling of the cable, to a temperature below the melting point of the thermosetting |
| 4425201 |
Method for improved alumina control in aluminum electrolytic cells |
January 10, 1984 |
| A method of controlling alumina additions to aluminum reduction cells is disclosed. Changes in cell resistance with respect to time are measured and compared to historical values. Alumina is fed to the cell only under conditions which, based upon a statistically reliable sampling of |
| 4424084 |
Aluminum alloy |
January 3, 1984 |
| Aluminum base alloys containing 0.5 to 1.3% silicon, 0.8 to 1.8% copper, 0.1 to 0.4% manganese, 0.4 to 1.0% magnesium, up to 0.6% iron, 0.20% chromium, 0.5% zinc, 0.15% titanium and 0.05% each of other components up to 0.15% total, the balance aluminum are described.Such alloys demonstra |
| 4422274 |
Insulated panel |
December 27, 1983 |
| An insulating panel structure for tank-like vessels, such as chemical reactors, precipitators and the like is disclosed. The panel structure includes fastening clips which permit a pre-fabricated panel structure to be fastened onto the vessel. These fastening clips permit thermal exp |
| 4419126 |
Aluminum purification system |
December 6, 1983 |
| A method for extracting aluminum of substantial purity from furnace products resulting from carbothermic reduction of alumina-bearing ores and contaminated with up to about 30 weight percent of aluminum carbide is disclosed. The method involves contacting the furnace product with a high |
| 4410423 |
Separation of spent cathode carbon and alkaline ore |
October 18, 1983 |
| A method for separating the alkaline ore and spent carbon fractions contained in spent electrolytic cell cathode comprising the steps of:(a) grinding the spent cathode to a suitable particle size;(b) treating the product of step (a) with ultrasonic energy, sulfuric acid, or both, for a perio |
| 4409021 |
Slag decarbonization with a phase inversion |
October 11, 1983 |
| A batch method is described for decarbonizing aluminum primary furnace product from an aluminum carbide content of up to about 35% to a useful content of about 2% Al.sub.4 C.sub.3. The method maximizes mass transfer of the aluminum carbide from molten primary furnace product to molten sl |
| 4407340 |
Container pressurization system |
October 4, 1983 |
| An apparatus is disclosed for pressurizing containers by injecting predetermined amounts of liquified gas into the containers. This device includes an injection unit having a combination float-pressure regulating means which employs the vapor pressure of evaporating liquified gas to its |
| 4405894 |
Voltage control and balancing circuit |
September 20, 1983 |
| A circuit is described for controlling voltage input to a pair of resistances. A main transformer and variable auto transformer are wired in cascade between the voltage supply and the resistances. The resistances are wired in series to the output of the variable auto transformer, with |
| 4405009 |
Method and apparatus for measuring ingot production |
September 20, 1983 |
| A method and apparatus are disclosed for measuring the displacement and velocity of metal ingots, such as aluminum ingots, during direct chill casting thereof. A tube rests on the table carrying the ingot and travels with this table. Attached to this tube is a cable, forming a part of a |
| 4394204 |
Method for heat sealing |
July 19, 1983 |
| A method and apparatus for hermetically heat sealing flexible containers, and particularly pouch-like containers, is disclosed. A filled pouch is positioned between a pair of heated bars, with the bars being constructed and arranged to maintain a gap therebetween, such that pressure is n |
| 4391655 |
Treatment for the alleviation of high temperature oxidation of aluminum |
July 5, 1983 |
| High Temperature Oxidation (HTO) of aluminum subjected to heat treatment is controlled by exposing the aluminum surface to a metal chloride prior to heat treatment. Transition metal chlorides are preferred for such treatment. |
| 4390400 |
Aluminum chloride addition to electrolytic cells |
June 28, 1983 |
| The problem of transferring a highly hygroscopic, subliming solid, aluminum chloride, from a condensation zone at the end of a chlorination process to a reduction cell is solved by condensing the aluminum chloride values not as a solid, but as a low melting point liquid complex with depl |
| 4388107 |
Minimum-energy process for carbothermic reduction of alumina |
June 14, 1983 |
| Alumina is carbothermically and cyclically reacted with carbon and recycled materials within a reduction zone to produce a slag layer, an overlying aluminum metal layer, and vaporization products which are passed through a vapor-permeable back-reaction zone, which comprises a feed charge |
| 4387019 |
Aluminum can reclamation method |
June 7, 1983 |
| A method for reclaiming aluminum cans from municipal refuse is disclosed. The method includes a first screening operation to remove materials substantially larger than the cans, a second screening operation to remove material substantially smaller than the cans, a magnetic separation to |
| 4385445 |
Thickness gauge |
May 31, 1983 |
| A gauge for thickness measurement, being particularly adapted to measuring thickness within grooves, is disclosed. The gauge employs a reinforced blade as the groove entering element. This blade is designed to prevent penetration of the workpiece being measured, resulting in enhanced |
| 4383910 |
Alumina reduction cell |
May 17, 1983 |
| An improved alumina reduction cell is described in which the carbonaceous cathode includes refractory hard metal tiles projecting upwardly from the cell surface thereof, forming the true cathode surface, and a solid layer of alumina and cryolite beneath the molten aluminum produced withi |
| 4381848 |
Membrane closure structure |
May 3, 1983 |
| A retortable membrane closure structure for containers is disclosed which includes a first adhesive layer, an intermediate layer, a second adhesive layer and an outer barrier layer. Bond strengths and tear strengths of the layers are selected such that upon peeling the membrane from a co |
| 4378337 |
Still heating process for purifying aluminum chloride |
March 29, 1983 |
| In a process for purifying aluminum chloride made by the high temperature chlorination of an aluminum value containing material by distilling the aluminum chloride in a still, and separating the aluminum chloride the improvement comprising adding sufficient alkali chloride to the aluminu |
| 4376801 |
Selective coating for solar collectors |
March 15, 1983 |
| A selective solar coating for solar collectors is disclosed. The coating is characterized by its high absorptance and low emittance. The coating comprises an organic compound or substance having a high molecular weight and a high carbon content, such as a petroleum, vegetable or animal o |
| 4363789 |
Alumina production via aluminum chloride oxidation |
December 14, 1982 |
| A method for producing alumina from a material containing alumina values via a chlorination step which process comprises the steps of:(A) dehydrating the material, if necessary, at a temperature of between about 500 and about 1300.degree. K.;(B) chlorinating the product of step (A) in the pr |
| 4356884 |
Acoustical enclosure system |
November 2, 1982 |
| An acoustical enclosure system, particularly designed for overtable circular saws employed in cutting such materials as metal shapes, is disclosed. The system includes an acoustical enclosure covering the saw and a pair of vibration damping arms covering the workpiece being sawed. Th |
| 4355008 |
Chlorination process |
October 19, 1982 |
| There is described a method for producing alumina from a material containing alumina values via a chlorination step which process comprises the steps of:(A) dehydrating the material, if necessary, at a temperature of between about 500 and about 1300.degree. K;(B) chlorinating the product |
| 4349100 |
Conveyor |
September 14, 1982 |
| A conveyor system is disclosed in which a plurality of free-wheeling conveyor rollers are rotated by means of a driven belt which intermittently contacts the conveyor rollers when driven motion is desired. The rollers may also be braked by means of a second belt member which may cont |
| 4341611 |
Alumina reduction cell |
July 27, 1982 |
| An improved alumina reduction cell is described in which the carbonaceous cathode includes refractory hard metal tiles forming the surface in contact with molten aluminum formed in the cell and intermediate tiles separating the refractory hard metal tiles from the carbonaceous cathode |
| 4339934 |
Strip shape control |
July 20, 1982 |
| In a metal strip rolling mill having a strip shape measuring means connected to adjust the mill to control the strip shape, improved strip shape control performance is achieved by mounting a hold-down roll between the measuring means and the take-up reel. |
| 4334917 |
Carbothermic reduction furnace |
June 15, 1982 |
| A carbothermic reduction process is described for producing alumina metal containing about 10% Al.sub.4 C.sub.3. The process heats a descending charge by radiation at a rate of heat flux of 10-100 KW/sq. inch, to form a melt surface that is spaced from an open arc between a pair of e |
| 4333813 |
Cathodes for alumina reduction cells |
June 8, 1982 |
| This invention concerns cathodes for alumina reduction cells, particularly drained cathodes, which present a refractory surface for contacting molten aluminum on the cell floor. This invention also concerns materials for constructing such cathodes.The cathodes described comprise a carbon |
| 4331645 |
Alumina from alkali metal-aluminum chloride complexes |
May 25, 1982 |
| A method for the production of reduction cell grade alumina from alkali metal/aluminum chloride complexes comprising the steps of:A. reacting the alkali metal/aluminum chloride complexes with oxygen in a three phase fluidized bed comprising:(I) as a solid phase, particles or pebbles of alumi |
| 4331637 |
Process for purifying aluminum chloride |
May 25, 1982 |
| A method for purifying with respect to iron, aluminum chloride produced via the chlorination of aluminum bearing ores or materials which also contain iron. The process comprising the steps of:1. chlorinating the aluminum value containing material in a manner which produces a gaseous prod |
| 4328670 |
Hydraulic motion amplifier |
May 11, 1982 |
| A hydraulic system for motion amplification is disclosed. The system provides hydraulic fluid on both sides of a pair of hydraulic cylinders, creating a pressurized closed loop which provides precision control during both forward and reverse strokes of each hydraulic piston. |
| 4325519 |
Sheet material dispensing mechanism |
April 20, 1982 |
| An apparatus is disclosed for intermittently dispensing sheet material from a roll to an operating apparatus. The apparatus includes means for accumulating sheet material from the roll which does not require the roll to be motor driven and means for preventing pull back of the sheet |
| 4321185 |
Ink system |
March 23, 1982 |
| An ink system, especially for use in retort environments, is disclosed. The ink system comprises a hard polyester resin, a soft polyester resin, a polyisocyanate catalyst and an appropriate pigment or pigments. |
| 4317697 |
Sealing mechanism |
March 2, 1982 |
| An adjustable sealing mechanism for heat sealing packages in plastic film is disclosed. The sealing apparatus includes means for vertically adjusting the position of the heat seal to accommodate objects of varying heights while maintaining a vertically controlled heat seal at the ends of |
| 4317585 |
Torqued drill pipe identification |
March 2, 1982 |
| Suitable marks on protected places at opposite ends of a drill pipe make it possible to inspect the pipe after it has been used in a drill string to determine whether it has been subjected to excessive torque in the course of its previous use, so that it should not be used again in a new |
