Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 5049067 | Scrap metal recycling furnace systems A scrap metal recycling furnace system comprises a dry hearth furnace, a closed well furnace, an afterburner chamber, a regenerator, a safety cooler and a fume purification plant operably interconnected by a plurality of conduits to form a system wherein ... | 09/17/1991 |
| 5044940 | Blast furnace air heater An air heating apparatus for air that is to be supplied to a blast furnace. The apparatus includes a number of separate air heater devices connected together in series flow relation so that the total temperature increase is the sum of the heating actions ... | 09/03/1991 |
| 4877013 | Hot blast stove installation A hot blast stove installation for heating cold blast to form hot blast includes a plurality of hot blast stoves each alternately operable during a heating phase and a blowing phase, a cold blast main for supplying cold blast to respective of the stoves d... | 10/31/1989 |
| 4666403 | Air preheating system for continuous fired furnace A system for preheating air being fed to a continuous fired furnace by means of high temperature waste gases exhausted from the furnace. The system includes two pairs of interconnected regenerators. The regenerators of one pair are alternately connected b... | 05/19/1987 |
| 4588168 | Device for regulating the delivery of hot air in a tuyere stock of a shaft furnace and a tuyere stock which incorporates the same An apparatus for regulating the feed or delivery of hot air in the tuyere stock of a shaft furnace, and a tuyere stock which incorporates such a regulating apparatus is presented. The regulating apparatus may be used in conjunction with a tuyere stock for... | 05/13/1986 |
| 4582485 | Blast furnace stove The burner means for a blast furnace stove having a vertical shell, a combustion chamber adjacent the inside wall of the shell and checkers in the shell includes a generally horizontal first tube extending from the outside of the shell into communication ... | 04/15/1986 |
| 4452586 | Method of blast heating A method of and a device for blast heating is described, employing separate indirect heat exchangers for combustion air and fuel gas fed to a regenerator and flue gases discharged from the regenerator. The indirect heat exchangers share heat-transfer liqu... | 06/05/1984 |
| 4375956 | Hot blast stove arrangement for a blast furnace In a support construction for a hot blast main which is connected by respective branches to the outlets of a plurality of hot blast stoves of a blast furnace, the main is suspended on each stove by means of a rod system secured to a stiffened transitional... | 03/08/1983 |
| 4235593 | Blast stove A blast stove having adjoining combustion and checker chambers, for use with a blast furnace. A support structure, mounted within the checker chamber, supports tiers of interlocked checkerbricks. The support structure includes vertically extending columns... | 11/25/1980 |
| 4062129 | Arrangement for preparing hot compressed air of reduced moisture content suitable for use in operation of blast furnace Arrangement for preparing dry hot compressed air to be supplied to blast furnace, wherein a heat exchanger and a dehydrater assembly comprising a gas permeable regenerative moisture absorbing rotor are arranged in the air passage from blower to hot air fu... | 12/13/1977 |
| 4060913 | Assembly for dehydrating air to be supplied to blast furnace Assembly for dehydrating atmospheric air at the input side of a blower for supplying air to a blast furnace comprising at least one gas permeable rotor containing a regenerative moisture absorbent wherein a hot combustion gas obtained by burning a waste g... | 12/06/1977 |
| 4022573 | Hot blast stove and method of operation Intercrystalline stress corrosion of the walls of heat exchangers employed to produce hot air for injection into a blast furnace, particularly the wall of the passage interconnecting the combustion and heat exchange chambers, is avoided by eliminating pre... | 05/10/1977 |
| 3966393 | Hot blast stove apparatus A hot blast stove apparatus comprising a hot blast stove having a discharge passage for hot blast gases, and a temperature equalizer material in the passage such that the hot blast gases discharged from the hot blast stove, gradually lowering in temperatu... | 06/29/1976 |
| 3951586 | Method of operating the heating stoves A method is disclosed for the improved operation of heating stoves for blast furnaces. This method is comprised of a combined use of an independent source of compressed air and potential and thermal energy of air remaining in the heating stoves at the end... | 04/20/1976 |
