Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 5833778 | Apparatus and method for the manufacture of DR steel strip Apparatus and method for manufacture of DR (Double Rolled) steel strip in which a continuous annealing furnace is arranged for annealing of cold-reduced steel strip passing continuously through said furnace, and a rolling mill for cold-rolling of steel st... | 11/10/1998 |
| 5628842 | Method and apparatus for continuous treatment of a strip of hot dip galvanized steel A method and apparatus for continuously treating a strip of hot dip-galvanized steel. The method comprises the steps of rapidly reheating the strip to a predetermined temperature between 460° C. and 600° C., with a heating flux greater than 180 kWatts p... | 05/13/1997 |
| 5503373 | Shaft furnace A shaft furnace, e.g. a blast furnace, has a bosh, a shaft and a mantle ring at the transition from the bosh to the shaft. At both the bosh and the shaft, there is a steel jacket and a refractory lining on the inside of the steel jacket. Cooling elements ... | 04/02/1996 |
| 5433599 | Ceramic burner for a hot-blast stove of a blast furnace A ceramic burner for a hot blast stove has a central gas duct that opens into the central zone of a burner crown and side air ducts on both sides of the gas duct which also open into the central zone. To improve combustion characteristics, there is a cent... | 07/18/1995 |
| 5408096 | Instrument for a centrifugal separator for detecting the presence of a body and rolling mill provided with such an instrument An instrument for detecting the presence of a body, comprising a detector (2) and a housing (1) in which the detector (2) is accommodated. The housing (1) is provided with at least one guide passage (6) for transmission to the detector (2) of one or more ... | 04/18/1995 |
| 5395142 | Welding joint and backing sleeve therefore Welding joint (18,22) connecting workpieces (19,20,24,29) having a throughlet (25) comprising a weld (21,34) wherein a backing sleeve (10,28) is held within the workpieces (19,20,24,29) in the region of the weld. The welding joint comprises a partition la... | 03/07/1995 |
| 5388505 | Apparatus for loop binding an article or bundle of articles with an arcuate sectional annular guide and restrainer Method and apparatus for forming a binding around an article or bundle of articles by a length of stiff wire wherein at least two and preferably three turns of the wire are made, the wire is joined at its ends and thereafter a lifting loop is made in at l... | 02/14/1995 |
| 5375817 | Hot blast stove and method for constructing a hot blast stove In the construction of a hot blast stove, walls are made of pre-formed and baked bricks. At the joint between two walls, cast joining elements of complex shape are incorporated. The cast joining elements may be cast in situ. This avoids the need for press... | 12/27/1994 |
| 5359668 | Method and apparatus for determining the image clarity of a surface Method for determining the image clarity of a surface of a sheet strip or similar, including projection of an image on the surface, detection of a virtual image of the image projected onto the surface and the processing of the detected virtual image into ... | 10/25/1994 |
| 5358223 | Hot-blast main for hot-blast stove system of a blast furnace A hot-blast main for a hot-blast stove system of a blast furnace has a refractory structure comprising a plurality of courses of refractory bricks. At least a first one of the courses has at least one part thereof comprised of a plurality of expansion-joi... | 10/25/1994 |
| 5352278 | Marking powder for and method of marking a metallic article A marking powder is disclosed for marking metallic bodies, in particular hot metallic bodies, which may be steel or other ferrous metal. Zinc is present in the marking powder in an amount 20 to 70% by weight, and it found that this results in improved leg... | 10/04/1994 |
| 5350102 | Wire transport apparatus A wire transport apparatus has a pair of rollers having opposed peripheral running surfaces which at their nip contact the wire to drive it, one of said rollers being driven. The driven roller is mounted on an arm swingable about a pivot axis. The arm als... | 09/27/1994 |
| 5329688 | Process and plant for obtaining steel strip coils having cold-rolled characteristics and directly obtained in a hot-rolling line A process for obtaining steel strip coils with characteristics of a cold-rolled product, directly in a hot-rolling line, comprises subsequently to steps of casting and thickness reduction at a temperature of more than 1100° C. upon solidification, induct... | 07/19/1994 |
| 5306566 | Method of inhibiting the reduction of the bond strength by water of a metal-thermoplastic polymer metal sandwich The method of inhibiting the reduction of the bond strength by water of a metal-thermoplastic polymer-metal sandwich, where the thermoplastic core contains carbon to carbon double bonds, by incorporating 0.01 to 1.0% of a fatty acid component which compri... | 04/26/1994 |
| 5303766 | Apparatus and method for the manufacture of hot-rolled steel In the manufacture of hot-rolled steel strip, a continuous casting machine casts a slab and a roll stand for reducing the thickness of the slab to make strip is incorporated in line with the continuous casting machine. Advantages of simplicity and rolling... | 04/19/1994 |
| 5225176 | Process for the removal of sulfur oxide constituents from a waste gas A waste gas from a chemical process is treated to remove undesirable substances, especially sulphur dioxide, by contacting said waste gas with acidic solution, e.g. industrial waste solution, at pH less than 2 to effect pre-cleaning, and then contacting s... | 07/06/1993 |
| 5186018 | Cooling system for cooling a moving metal strip A cooling system for cooling a metal strip moving horizontally along a roller conveyor has a plurality of water boxes (4) arranged between the rollers (1,2,3) of the roller conveyor and each having upwardly directed outlet ducts (6) from which cooling wat... | 02/16/1993 |
| 5173168 | Method of making iron foil by electrodeposition Iron foil is made by deposition of iron in an electrochemical cell having an insoluble anode from an acid electrolyte onto a moving cathode by the reaction: Fe2+ +2e- .fwdarw.Fe (foil) (I), and removing the iron foil ... | 12/22/1992 |
| 5170049 | Coating thickness gauge using linearly polarized light A coating thickness gauge for measuring the thickness of a coating of chromic oxideon a chromium layer on a substrate has a light source 17 for generating linearly polarized light, means 19 for splitting elliptically polarized light reflected through the ... | 12/08/1992 |
| 5143356 | Sintering machine A sintering machine having a train of grate cars containing grates for supporting material to be sintered, rails along which the grate cars travel, a plurality of suction boxes arranged beneath the travel path of the grate cars and connected to suction me... | 09/01/1992 |
| 5132004 | Method for the manufacture of a metal-coated steel strip and strip produced by the method A method for the manufacture of a metal-coated steel strip with improved surface structure, wherein the strip is electrolytically coated with one or more metal coatings and the last-applied coating is temporarily melted by supplying heat to the strip (mel... | 07/21/1992 |
| 5127695 | Apparatus for manipulating a pallet An apparatus for manipulating a two-part pallet which includes at least one pair of first and second engagement members displaceable relative to each other along an axis. The first engagement member is provided with a first clamp for clamping a portion of... | 07/07/1992 |
| 5088695 | Iron runner An iron runner for tapping molten crude iron from a blast furnace is proposed, comprising at least a wear lining which forms a boundary carrying the iron during operation and a permanent lining in which the wear lining is contained, an outer boundary and ... | 02/18/1992 |
| 5089299 | Composite ceramic micropermeable membrane, process and apparatus for producing such membrane A microporous ceramic membrane comprises a porous support and a microporous layer firmly bound to each other, with a sharp geometric transition between the support and the microporous layer, the microporous layer being free of pin-holes. The microporous m... | 02/18/1992 |
| 5089242 | Method for selectively separating a non-ferrous metal A method for selectively separating Zn from an acidic aqueous solution containing ions of Zn and Fe obtained by leaching of blast furnace dust using hydrochloric acid comprises first precipitating Fe from the solution and then treating the resultent Zn-co... | 02/18/1992 |
| 5079941 | Temper mill installation and shearing machine for use in such an installation A temper mill installation for steel strip has an uncoiler, a rolling mill for the strip, a shearing machine for cutting the strip to remove damaged turns at the end of a coil and a coiler for coiling the strip after rolling. To avoid wastage of sheet, th... | 01/14/1992 |
| 5058864 | Method of manufacture of pig iron using hollow tube to reseal tap role In the manufacture of pig-iron in a shaft furnace, a taphole is closed with hardened plugging compound during making of the iron and is opened for the tapping of the iron and then resealed. The resealing of the taphole comprises inserting hardenable plugg... | 10/22/1991 |
| 5042564 | Method for the manufacture of formable steel In the manufacture of formable steel in the form of a strip with a final thickness of between 0.5 and 1.5 mm, in a number of continuous successive process stages, molten steel is continuously cast into a slab of less than 100 mm thickness and the slab is ... | 08/27/1991 |
| 5031882 | Channel structure for flow of molten pig iron A channel structure, i.e. iron trough or iron runner, for flow of molten pig iron during tapping of a blast furnace, comprises a wear lining which provides the surface along which the iron flows, a permanent lining outside the wear lining and an outer lin... | 07/16/1991 |
| 5024086 | Method of measurement of the level of the surface of a metal bath The level of the surface of a bath of molten metal beneath a fluid layer of slag in a metallurgical vessel is measured by a detector which is moved through the slag layer into the metal bath and then withdrawn. To improve accuracy and to avoid the need fo... | 06/18/1991 |
| 5009396 | Method and apparatus for the manufacture of formable steel strip In the manufacture of formable steel strip having a thickness between 0.5 and 1.5 mm, the following process steps are performed sequentially in a continuous process: (a) in a continuous casting machine forming liquid steel into a hot slab having a thickne... | 04/23/1991 |
| 5006061 | Method for bringing a plurality of steel slabs to rolling temperature in a furnace A method for bringing a plurality of steel slabs to rolling temperature uses a furnace having a controllable energy supply. To accommodate variation of slab temperature at entry, especially mixing of cold and hot slabs, at least one virtual slab correspon... | 04/09/1991 |
| 4933006 | Method for the batch production of steel in an oxygen steel converter with scrap input In a batch production of steel, a charge including solid scrap is loaded into an oxygen steel converter, the scrap is melted and the charge is refined in the converter by means of an oxygen blowing lance inserted into the converter through the converter m... | 06/12/1990 |
| 4919273 | Apparatus for sorting metal bars by length Apparatus for sorting metal bars by length, has a conveyor on which the bars are arranged longitudinally and conveys the bars both longitudinally and laterally. The conveyor has driven rollers contacted by the bars. A pick-up device picks up and conveys l... | 04/24/1990 |
| 4912954 | Method of rolling strip in a rolling mill and a control system therefor In the rolling of a metal strip in a rolling mill which has a rolling mill train of one or more roll stands, before the metal strip enters the rolling mill train the roll stand are each given a presetting in accordance with a predicted necessary roll forc... | 04/03/1990 |
| 4913649 | Repair of the refractory lining of the wall of a shaft furnace and a repaired shaft furnace In the repair of a refractory lining of a shaft furnace having a steel shell, a worn residual refractory lining inside the shell and cooling plates extending through the shell into the refractory lining, the worn lining is retained and an additional linin... | 04/03/1990 |
| 4905859 | Metal packaging can and method of making it Metal packaging can body, for use in forming a can by attachment of at least one lid, has a generally cylindrical body portion and a flanging rim which is intended for the subsequent attachment of the body portion to the lid. The flanging rim is at least ... | 03/06/1990 |
| 4900406 | Method of electrolytic metal coating of a strip-shape metal substrate and apparatus for carrying out the method In the electrolytic metal coating of a strip-shape metal substrate, the substrate is passed in a continuous process as cathode through an electrolytic coating apparatus having an insoluble anode, the cathode and anode being connected to an external voltag... | 02/13/1990 |
| 4885041 | Method for the manufacture of formable steel strip In the manufacture of formable steel strip having a thickness between 0.5 and 1.5 mm, the following process steps are performed sequentially in a continuous process: (a) in a continuous casting machine forming liquid steel into a hot slab having a thickne... | 12/05/1989 |
| 4881394 | Method and apparatus for ironing the wall of a one-piece cylindrical body In the wall ironing of a deep-drawn cylindrical body, two ironing ring die regions provide respectively immediately successive first and second thickness reduction phases which take place simultaneously with a relatively small reduction occurring in the f... | 11/21/1989 |
