Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7093457 | Annular cooler pallet construction A pallet construction for an annular cooler forms a gas permeable surface for supporting and transporting material during processing thereof. The pallet construction includes a pallet deck having a series of substantially parallel rows of spaced apart elongated slot... | 08/22/2006 |
| 7013640 | Stirling engine assembly A seal between the head of a Stirling engine (1) and surrounding burner assembly (2). The seal comprises an annular trough (11) attached to one component and filled with a viscous liquid (14), and an annular blade attached to the other co... | 03/21/2006 |
| 5885521 | Apparatus for rapid reduction of iron oxide in a rotary hearth furnace A method and apparatus for producing direct reduced iron from dry compacts composed of iron oxide and carbonaceous material by feeding compacts no more than two layers deep onto a hearth and removing all the volatiles and metallizing the compacts by expos... | 03/23/1999 |
| 5319862 | Method of and apparatus for manufacturing a mat for building purpose A method of and an apparatus for drying/curing a dry material such as a mat of fibrous or powder material as may be used for building purpose as well as a non-dry material such as a thermosetting resin are disclosed. The disclosure relates to the sealing ... | 06/14/1994 |
| 5270022 | Process for the reduction roasting of manganese ores and a device therefor Reduction roasting of manganese ore is the first step in the extraction of the metal, production of manganese based chemicals and benefaction of ferruginous manganese ores. In comparison to the conventional processes, the invented process replaces the exp... | 12/14/1993 |
| 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 |
| 5074531 | Sealing apparatus for sintering machine Sealing apparatus of wind boxes at both the ore charge and discharge sides of a Dwight-Lloyd sintering machine provides a plurality of seal members disposed in series in close contact with the bottom surface of pallets of the sintering machine, and a seal... | 12/24/1991 |
| 4825561 | Curing oven apparatus A flexible screen mounted to pneumatically seal the sides of an opposing belt conveyor system in a porous pack curing oven. Fixed to the upper belt structure and drapingly sealed to the lower belt structure, the screen impedes curing gases directed throug... | 05/02/1989 |
| 4572484 | Pallet construction for traveling grate machines A pallet construction for use in a circular traveling grate machine of the type having rotatable inner and outer side frames which move with the pallets on either side thereof. Various restraining and float means associated with the pallet hanger brackets... | 02/25/1986 |
| 4430056 | Pressure actuated seal for travelling grate A pressure actuated sealing system for a travelling grate comprising at least one horizontally elongated rigid seal plate pivotally mounted below said travelling grate in sealing relationship with said travelling grate and with windbox means mounted below... | 02/07/1984 |
| 4408987 | Circular traveling grate machine for process requiring minimum gas leakage A traveling grate consisting of individual pallets each supported on four wheels and independently connected to continuous side walls so that the pallets can pivot down away from and back toward the continuous sidewalls as the rear wheels follow a depress... | 10/11/1983 |
| 4276120 | Purification of coke A process and apparatus are disclosed for purification of petroleum coke to produce an economical low sulfur product suitable for electrode production. Finely ground green coke is treated on an enclosed circular grate apparatus and subjected to sequential... | 06/30/1981 |
| 4238120 | Sealing device for sinter cooler A seal for a bulk material circular cooler includes arcuate sections of flat, horizontally disposed rings directed inward from each upper side edge of the wind boxes. Horizontally disposed outwardly directed ring-shaped flanges depending from both arcuate... | 12/09/1980 |
| 4235172 | Grate with compensating means for use in industrial furnaces A grate wherein several steps of alternating partly overlapping mobile and stationary grate bars are adjacent to a compensating device which expands or contracts to compensate for heat-induced variations of the width of adjacent steps. The compensating de... | 11/25/1980 |
| 4208307 | Purification of coke A process and apparatus are disclosed for purification of petroleum coke to produce an economical low sulfur product suitable for electrode production. Finely ground green coke is treated on an enclosed circular grate apparatus and subjected to sequential... | 06/17/1980 |
| 4103878 | Apparatus for removing solids from the water seal trough of an annular material cooler Apparatus for removing solids such as iron oxide pellets and fines from the rotating water seal trough of an annular material cooler by periodically operating an air ejector pump, which is suspended in the trough and operated at predetermined intervals an... | 08/01/1978 |
| 4096809 | Apparatus for compensating for thermally induced deformation of sections of grates in industrial furnaces or the like Apparatus which compensates for thermally induced changes in the width of gaps between longitudinally extending marginal portions of grate sections in industrial furnaces has two rows of plate-like cheeks which abut against the marginal portions of neighb... | 06/27/1978 |
| 4013517 | Circular traveling grate sintering machine A circular traveling grate machine is disclosed, which is particularly suitable for educting oil from oil shale. The machine includes generally circular inner and outer walls mounted for movement along a trackway and which carry a plurality of burden conv... | 03/22/1977 |
| 3987738 | Seal for a traveling grate A grate chain with a plurality of chain members hingedly joined together by bolts and having lateral edge plates with outwardly directed slide lips by which they are sealingly supported in the traveling grate housing.... | 10/26/1976 |
| 3988012 | Rotary hearth A rotary hearth for the continuous treating of metallurgical material which comprises a circular stationary hearth member having as flooring a rotating platform, driven by conventional driving means positioned therebeneath. Heating, cooling and venting me... | 10/26/1976 |
| 3930642 | Drum-type machine for agglomeration of ores and concentrates under pressure A machine comprises a rotary drum with a sintering grate on the peripheral surface thereof mounted in a tightly sealed casing, and a hearth mounted coaxially with the drum for ignition and sintering of a charge using air and gas supplied to the hearth. Th... | 01/06/1976 |
