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| Number | Title | Issue Date |
| 6299743 | Electrolytic generation of nitrogen The invention provides methods and devices for the electrochemical generation of nitrogen from organic nitrogen compounds, such as hydrazides (RCONHNH2), the corresponding organic hydrazino-carboxylates (RCO2 NHNH2) and am... | 10/09/2001 |
| 4555795 | Monaural to binaural audio processor An audio processor which converts monaural input to a realistic pleasant sounding binaural output in which optical coupling means, having a nonlinear transfer characteristic, creates an unbalanced output to a pair of audio outputs. The system provides for... | 11/26/1985 |
| 4541698 | Remote camera viewfinder A remote camera viewfinder has a fiber optic bundle with a fitting at one end adapted to attach to the eyepiece of a camera and a fitting at the other end for allowing a photographer to see through the fiber optic bundle. The camera end fitting has a lens... | 09/17/1985 |
| 4253990 | Preparation method for catalyst supports and materials produced thereby A method of preparation of catalyst supports is disclosed as well as supports made by the method. Natural diatomite, bentonite clay, silica, cellulose fiber, corn meal and water are mixed, extruded, pelleted, dried and calcined to form porous catalyst sup... | 03/03/1981 |
| 4251279 | Method of producing alumina-containing fiber and composition therefor An improved process for the formation of alumina-containing fiber is described. The process utilizes alumina having an alpha crystalline phase content in the range of from 5% to 60%, preferably 5% to 35%, as compared to the alpha alumina contents of 75% t... | 02/17/1981 |
| 4244720 | Fiber waste and cullet collection process and apparatus therefor A process and apparatus therefor are described for reclaiming waste material from a fiberizing system and for converting a molten stream of material into reclaimable cullet when the system is not fiberizing. When the system is fiberizing the waste is coll... | 01/13/1981 |
| 4243011 | Dust shroud for pipe-cutting portable circular saw A dust shroud is disclosed for a pipe-cutting portable circular saw. The shroud comprises upper and lower blade housings which are nested and guided so that the lower housing can be moved into and out of the upper housing. The lower periphery of the lower... | 01/06/1981 |
| 4241505 | Dust shroud for portable circular saw A dust shroud for a portable circular saw is described comprising an upper blade housing, a lower blade housing, an external connecting link connecting the two and aligned with the saw blade, and flexible sealing means attached to the upper part of the lo... | 12/30/1980 |
| 4238213 | Method of operation of a refractory fiber production process An improved process for the centrifugal spinning of refractory fibers is described. In the improved process rotor circumferential speeds of at least about 21,000 linear feet per minute (6,400 linear meters per minute) are used. In a preferred embodiment t... | 12/09/1980 |
| 4233379 | Separator for starved electrolyte lead/acid battery Compositions and papers made therefrom useful as separator materials in starved electrolyte lead/acid batteries are described. The compositions comprise a mixture of 30% to 80% by weight of perlite and 20% to 70% by weight of glass fibers. The glass fiber... | 11/11/1980 |
| 4218962 | Apparatus for forming thermal insulation blocks Apparatus is described for the formation of thermal insulation blocks from rolls of fibrous blankets. The apparatus comprises folding means to make alternating transverse folds in the blanket, insertion means to insert block supporting members (pronged be... | 08/26/1980 |
| 4216296 | Low smoke generating polyurethane foam A polyurethane foam composition is disclosed which has low smoke generation characteristics (i.e., a rating of less than 50 in the ASTM E-84 Tunnel Test). The composition comprises 80-100 parts by weight of poly(trichloro-oxybutylene) carbohydrate adduct,... | 08/05/1980 |
| 4213882 | Preparation method for catalyst support and materials produced thereby A method of preparation of catalyst supports as disclosed, as well as supports made by the method. Natural diatomite, bentonite clay, corn meal and water are mixed, extruded, pelleted, dried and calcined to form porous catalyst support pellets.... | 07/22/1980 |
| 4212446 | Universal mounting pad for electrical transformers A universal mounting pad for electrical transformers is described. Adjustable means comprising a plurality of recesses with channel irons therein engage movable bolts to which a variety of different size transformers can be attached. The pad is normally m... | 07/15/1980 |
| 4194282 | Method and apparatus for filling seams between adjacent fiber blanket insulation modules Gaps or seams between adjacent modular refractory fiber blanket insulation modules are filled by inserting therein strips of refractory fiber blanket. The strips are bent into a U-shape over a blade or plate and then inserted between two spreader members,... | 03/25/1980 |
| 4191585 | Alkali resistant glass article and method of preparation Alkali resistant glass articles are disclosed comprising glass fibers coated with zinc stearate. The coating will be present as 1 to 50, preferably 3 to 10, percent by weight of the coated fiber. The zinc stearate may be applied as a powder and converted ... | 03/04/1980 |
| 4186306 | Perlite expansion density control system A perlite expander control system is disclosed in which a source of and detector for penetrating radiation are used to determine the density of an expanded perlite product flowing through a conduit. The density of the perlite product will be inversely pro... | 01/29/1980 |
| 4186123 | Filled polymeric composition A composition is described comprising a resin matrix reinforced with nonamphibole asbestos fiber or other inorganic fibers having similar aspect ratios, fiber diameters and hydrophilic surfaces, in a concentration of 5 to 85 phr, the fiber being coated wi... | 01/29/1980 |
| 4178278 | Friction material for railroad service A friction material composition is described which is suitable for a wide variety of railroad brake services, particularly AAR (Association of American Railroads) service. In other embodiments the composition may also be used for heavy duty service, such ... | 12/11/1979 |
| 4169915 | Fire resistant foam products A heat resistant foamed material is disclosed, comprising a cellular foamed resin having associated therewith talc in sufficient quantity to provide enhanced fire resistance to the foam. In various embodiments the talc may be incorporated throughout the f... | 10/02/1979 |
| 4169082 | Flame resistant low-smoke hot melt adhesive A flame resistant low-smoke hot melt adhesive composition, particularly useful for adhering facings to building products and thermal insulations, is disclosed. The composition consists essentially of, in parts by weight, 11-45 parts of high (at least 200Â... | 09/25/1979 |
| 4168234 | Rotary pressure precoat filter with internal valving arrangement A rotary pressure precoat filter system is described containing an interior valving arrangement which increases the gas flow resistance through that region of the precoat from which solids have been removed but which has not yet been reimmersed in the slu... | 09/18/1979 |
| 4150189 | Shapeable insulating material for use with molten aluminum A composition is described for formation of shaped insulating articles compatible with and resistant to molten aluminum. The composition comprises calcium aluminate cement, chrysotile fibers, cryolite, inorganic filler, and, preferably, refractory fiber. ... | 04/17/1979 |
| 4140338 | High temperature expansion joint An expansion joint for duct work is disclosed, which comprises a pair of frames, spacer means extending outwardly from said frames, and a boot. The boot has five layers: an inner asbestos/aluminum/silica material, a fibrous insulation batt, a middle asbes... | 02/20/1979 |
| 4139026 | Pipe elbow fitting cover A pipe elbow fitting cover is described which can be manually folded from a first open trough-like shape to a second shape generally corresponding to the shape of the elbow to be covered and which incorporates means to maintain that second shape without t... | 02/13/1979 |
| 4134857 | Use of tannic or gallic acid to produce low beverage soluble iron content filter aid A low beverage soluble iron content filter aid, especially diatomite, is disclosed, as is the method for its production, which comprises contacting the granular filter aid with tannic acid, gallic acid, or mixtures thereof, preferable in aqueous solution.... | 01/16/1979 |
| 4131638 | Process for the manufacture of calcium silicate hydrate objects An improved "pre-autoclaving" process for the formation of fiber-reinforced calcium silicate hydrate bodies (such as thermal insulation) is disclosed. The improvement comprises first cooling the crystal slurry from the reactor in a heat exchanger and then... | 12/26/1978 |
| 4128434 | High density asbestos-free tobermorite thermal insulation containing wollastonite A high density thermal insulation material is described, consisting essentially of 15 to 40 parts lime, 20 to 40 parts silica or other silicious material, 15 to 40 parts wollastonite, all slurried in water, then compressed to a shape retaining body of at ... | 12/05/1978 |
| 4123886 | Refractory fiber blanket module with increased insulation Existing refractory fiber blanket furnace lining systems receive a layer of high temperature ceramic fiber blanket or felt on an inner surface portion, or hot face, thereof exposed to interior conditions of the furnace. The layer is attached to the module... | 11/07/1978 |
| 4118239 | Alkali-resistant glass fiber composition An alkali-resistant fiberizable glass composition is disclosed, comprising, in parts by weight, SiO2, 50-60 parts; Al2 O3, 1-11 parts; ZrO2, 4-10 parts; ZnO, 0.5-7 parts; at least one Group IA oxide, 10-19 parts... | 10/03/1978 |
| 4111891 | Friction material for railroad disc brakes A railroad disc brake shoe composition is disclosed comprising, in parts by weight: Phenolic resin binder: 25-35 parts Carbonaceous component: 2-12 parts Asbestos fiber: 35-50 parts Silicon carbide: 0.4-3 parts... | 09/05/1978 |
| 4111712 | High density asbestos-free tobermorite thermal insulation containing wollastonite A high density thermal insulation material is described, consisting essentially of, in parts by weight, 15 to 35 parts of lime, 15 to 35 parts of silica or other siliceous material, 40 to 70 parts of wollastonite, and 1 to 10 parts of organic fiber, and w... | 09/05/1978 |
| 4111113 | Packaging asbestos fibers Disclosed is a method of packaging asbestos fibers wherein damp asbestos fibers are consolidated into blocks having a density of at least about 100 lbs./cu. ft. (PCF). These blocks can then be stacked on pallets, pulpable pallets if desired, and secured t... | 09/05/1978 |
| 4112129 | Cooking oil treating system and composition therefor A composition is disclosed which is useful for reduction (by as much as 50% or more) of the rate of free fatty acid buildup and color degradation in cooking oils in fast food outlets and other eating establishments. The composition consists essentially of... | 09/05/1978 |
| 4110513 | Fire resistant plywood A plywood body is disclosed which comprises at least two plies of wood bonded together with a phenolic resin adhesive having platey talc incorporated therethrough in amounts of about 5 to 200 parts by weight per 100 parts by weight of resin. Such plywood ... | 08/29/1978 |
| 4108639 | Process for recovering platinum group metals from ores also containing nickel, copper and iron A process is described for the separation of platinum group metals (PGM) from ores also containing iron, nickel and copper as sulfides. The minerals in the ore are first concentrated by flotation and the ore concentrate is melted in an electric furnace to... | 08/22/1978 |
| 4103469 | Refractory fiber blanket module for furnace areas with high gas velocities Modular fiber blanket furnace lining is covered on the "hot face" with a surface layer of cloth made from continuous fibers of metal oxides (such as of alumina-boria-silica composition) to prevent erosion of the underlying fibers by high velocity furnace ... | 08/01/1978 |
| 4099949 | Method of reducing deterioration of electric furnace refractory metal components A process is described for the reduction or prevention of deterioration of refractory metal components of an electric furnace by chromia-containing oxide melts. The process is based on the discovery of an unexpected series of oxidation/reduction reactions... | 07/11/1978 |
| 4058947 | Fire resistant joint system for concrete structures An improved fire resistive joint system for concrete panel walls and like building structures is disclosed. The cool (or external) side of the joint is sealed by a high performance elastomeric joint sealant, preferably backed up by a closed cell backing m... | 11/22/1977 |
| 4055926 | Refractory fiber blanket module A fiber blanket module having a rectangular or box-shaped frame attached by suitable attachment structure to a wall of a furnace or other high temperature equipment to insulate such equipment. Each of two strips of woven metal oxide fiber cloth is suspend... | 11/01/1977 |
