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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7013929 | Self-closing thermal protection sheath and its method of fabrication A self-closing thermal protection sheath includes an interleaved structure comprising firstly a monofilament and secondly strips of metallized foil. ... | 03/21/2006 |
| 6705241 | Torispherical dome for refractory vessel A refractory vessel has a generally cylindrical metal shell and an upper torispherical dome. A refractory liner lines the shell and the dome. A layer of skew blocks are positioned between the cylindrical shell portion of the refractory liner and the dome portion. A ... | 03/16/2004 |
| 6540510 | Hemispherical dome for refractory vessel A refractory vessel comprising a metal shell having a generally cylindrical portion and an upper hemispherical dome. A refractory liner has a cylindrical portion spaced inwardly from the cylindrical portion of the metal shell and a hemispherical portion s... | 04/01/2003 |
| 6397765 | Wall segment for a combustion chamber and a combustion chamber A wall segment is for a combustion area to which a hot fluid can be applied. The wall segment includes a metallic supporting structure, with a heat protection element mounted on it. The metallic supporting structure is provided at least in places with a t... | 06/04/2002 |
| 6234790 | Refractory wall structure Refractory wall structure for a blast furnace, in particular for a metallurgical furnace, such as for example a blast furnace with a high process temperature during operation, which wall structure is subjected to a high thermal loading. The wall structure... | 05/22/2001 |
| 6074206 | Industrial oven with bi-directional expansion joints An industrial oven uses bi-directional expansion joints to accommodate lateral and longitudinal movement intersecting support beams of the oven's structural framework resulting from expansion of the support beams, the supported beams, and/or other oven co... | 06/13/2000 |
| 6058859 | Refractory support device and associated method A device for supporting refractory material in a furnace environment is provided. In one embodiment, the supporting device is fabricated from individual pieces which are connected to produce a functional supporting device. The material supporting device p... | 05/09/2000 |
| 5957067 | Ceramic liner In the case of a ceramic liner for combustion spaces, comprising at least one wall element (3), made of refractory structural ceramic and having at least one through-opening (6), and a fastening element (4), consisting of refractory structural ceramic, pe... | 09/28/1999 |
| 5913678 | Arrangement for sealing combustion-chamber bricks In an arrangement for sealing combustion-chamber bricks (8) which are force-cooled in a convective manner, the bricks (8) being arranged in at least two brick rows (6) in accordance with of an increasing combustion-space diameter and being put into suppor... | 06/22/1999 |
| 5899151 | Industrial furnace roof assembly and components thereof A high temperature industrial roof assembly having two refractory bricks with adjacent faces, opposing hanger recesses, a hanger rod extending from the recesses to the top of the assembly, the refractory bricks being held in an adjacent position by a secu... | 05/04/1999 |
| 5862641 | Kiln anchor An anchor for connecting refractory material to a wall or other support structure for a kiln or other vessel is disclosed. The anchor includes a first member having a section along its length that is selectively configured and has a selective cross-sectio... | 01/26/1999 |
| 5785517 | Cooling arrangements for refractory wall linings A wall lining for a furnace (10) includes a refractory layer (14) having a hot face (16) exposed to the interior of the furnace. A plurality of elements of a high thermal conductivity material (18), such as copper wires or rods, extend from the outer shel... | 07/28/1998 |
| 5695329 | Rotary kiln construction with improved insulation means A rotary kiln apparatus including an outer kiln shell defining an interior heating chamber therein for receiving material for heating which preferably includes a rotational drive for rotating the kiln, and a plurality of refractory bricks movably position... | 12/09/1997 |
| 5624256 | Ceramic lining for combustion chambers In the case of a ceramic lining for combustion spaces, comprising at least one wall panel (3) of high temperature resistant structural ceramic with at least one through-opening (6) and comprising one fastening element (4) per opening (6), the fastening el... | 04/29/1997 |
| 5466150 | Sagger wall for a ring pit furnace The invention relates to a partition wall, made up of a multiplicity of segments intended for a multi-compartment furnace as used for firing graphite electrodes, for instance. The invention calls for expansion joints to be incorporated between the segment... | 11/14/1995 |
| 5361557 | Offsetting interlocking tie-back assembly A brick for use in a high temperature furnace, or the like, having a body portion with at least one tongue and groove pair in at least one of the body surfaces with anchor means formed integrally with the body portion. Tie-back brick assemblies are formed... | 11/08/1994 |
| 5254001 | Hot replaceable tuckstones for industrial furnaces A tuckstone assembly (14) for an industrial type furnace (10) fills a space between a wall of the furnace and a supporting member (19) that supports the furnace superstructure. The tuckstone assembly (14) has a support block (26) having a sloped upper sur... | 10/19/1993 |
| 5163831 | Refractory tile for a suspended furnace wall A refractory tile for a suspended wall of a glass furnace includes upper and lower horizontal faces having respective raised and depressed tongue and groove portions. The tile is adapted to be laid in overlapping or bonded courses such that the tongue and... | 11/17/1992 |
| 5020992 | Shaft furnace A shaft furnace with a steel outer shell and a refractory lining inside the shell, has a sealed tap hole structure comprising a steel sleeve fitted to the outer shell, a permanent lining inside the sleeve and a refractory sealing material within said perm... | 06/04/1991 |
| 5015178 | Melting furnace A melting furnace has a supporting structure of thermostable steel, and an internal shell of common steel, serving as a contact area for the refractory lining of the furnace.... | 05/14/1991 |
| 4929179 | Roof structure A roof structure has a plurality of layers of heat resistant material, at least a first of the layers including a first brick layer, at least a second of the layers above the first of the layers including a heat resistant compound, and the heat resistant ... | 05/29/1990 |
| 4874313 | Refractory clad lid for heating vessel A refractory clad lid for heating vessel is disclosed. The lid includes a plurality of refractory blocks supported from a hollow metal paney by an interlocking dovetailed joint configuration at the panel/block interface. Coolant is circulated through the ... | 10/17/1989 |
| 4864945 | Curved nose refractory construction A high temperature furnace curved nose construction having refractories suspended from a support structure wherein a combination of radial filler refractories and rectangular filler refractories are supported by rectangular hanger refractories. Each radia... | 09/12/1989 |
| 4732652 | Clamping system for coke oven heating walls A clamping system for preventing detrimental tensile and shearing stresses in heating walls used for example as partitions in industrial furnaces, comprises clamping plates adjoining opposite end faces of a heating wall plate, yoke-shape beams facing each... | 03/22/1988 |
| 4637823 | High temperature furnace The invention concerns the internal structure of a high temperature furnace. That structure includes a dome made of refractory bricks that are capable of withstanding the high temperature within a coal gasification generator. The structure also includes a... | 01/20/1987 |
| 4565525 | Taphole construction of a shaft furnace In a shaft furnace having a metal shell, a refractory furnace lining inside the shell and a taphole construction comprising a drilled taphole extending through a plug located in an aperture in the shell and a taphole brick structure forming part of said f... | 01/21/1986 |
| 4482316 | Insulated atmosphere furnace A heat treat furnace wherein the furnace top and side walls are each defined by an outer, gas-tight metallic structural wall, an intermediate perforate metal plate generally parallel to and coextensive with the exterior wall to define a plenum chamber the... | 11/13/1984 |
| 4389190 | Support of suspension of insulating material When coating the inner surfaces of a furnace with strips of refractory mineral material or synthetic material such as felt, one often uses anchors which are welded to the shell of the furnace, which anchors are provided with recesses such that little plat... | 06/21/1983 |
| 4371334 | Shaft furnace, particularly the refractory construction of the bottom thereof The refractory bottom of a shaft furnace, e.g. a blast furnace has a graphite layer, above it an intermediate layer of lower coefficient of thermal conductivity (λ-value) and above the intermediate layer a third layer of yet lower λ-value. To control th... | 02/01/1983 |
| 4317418 | Tile hanger assembly An anchor tile hanger for anchoring refractory brick to the roof of a furnace structure is comprised of a pair of vertically spaced apart plates having aligned cutouts in the upper edges which cutouts are adapted to engage the lower horizontal portion of ... | 03/02/1982 |
| 4300882 | Industrial furnace with side wall ceramic insulating modules An industrial furnace with insulating walls comprising side-by-side pre-formed panels each including a plurality of ceramic insulating modules. The side wall panels include vertical buckstays to which the modules are secured by retainer clips including sh... | 11/17/1981 |
| 4272063 | Brick assembly for use in metallurgical vessels Bottom blown metallurgical vessels using oxygen having a brick assembly which is secured together by metal anchors.... | 06/09/1981 |
| 4249888 | Industrial furnace with ceramic insulating modules having internal grid support An industrial furnace with insulating walls and roof comprising side-by-side pre-formed panels each including a plurality of ceramic insulating modules. The roof modules are suspended by a structure comprising a support grid embedded in situ in the cerami... | 02/10/1981 |
| 4189301 | Reinforced insulating members A thermally insulating member for protecting water cooled pipes in the supporting structures for work pieces in heat treating furnaces comprises a cast refractory insulating member into which is solidly embedded a reticulated metal mesh reinforcement memb... | 02/19/1980 |
| 4155703 | Lining truncated cone walls by means of refractory bricks The lining of conically narrowing or widening walls with brick is facilitated by laying the brick in courses which are closed rings, the bricks subtending an angle of about 5° to 30° with respect to the horizontal.... | 05/22/1979 |
| 4081237 | Hearth construction and method of manufacture A hearth construction having a plurality of sections each of which has a first plurality of parallel, stainless steel I-beams connected in spaced relation by a plurality of transverse stainless steel I-beams. The top surfaces of the longitudinal and trans... | 03/28/1978 |
| 4053278 | Tunnel kiln A tunnel kiln consisting of a succession of tunnel sections assembled from prefabricated large-surface side panels and ceiling panels supported on a tunnel frame of structural steel, at least some of the panels being removable for access to the kiln. Simi... | 10/11/1977 |
| 4039280 | Linings for high temperature ovens A furnace lining formed from a plurality of blocks each comprising an assembly of stacked parallel plates and at least one profiled or toothed end member. The profiles are shaped to be capable of receiving in spaced relationship in the stack of plates. Th... | 08/02/1977 |
| 4003695 | Stove of blast furnace A stove comprises a metal jacket the inner surface of which has a gunite coating with a layer of metal or a heat-resistant synthetic material sprayed on the surface of said coating to form a continuous gastight cover. The gastight cover is superimposed by... | 01/18/1977 |
| 4003696 | Flat self-supporting vault for tunnel type furnaces particularly for baking bricks and tiles A flat self-supporting vault for tunnel-type furnaces, particularly for baking bricks and tiles is made of mutually interconnected beams bearing at both ends on the side walls of the furnace disposed transversely to the tunnel length. Each beam is made of... | 01/18/1977 |
