FERROELECTRIC PIEZOELECTRIC SINGLE CRYSTAL HAVING SPONTANEOUS POLING CHARACTERISTIC, METHOD FOR MANUFACTURING SAME, AND PIEZOELECTRIC AND DIELECTRIC APPLICATION PARTS USING SAME
35050] of a secondary phase. Furthermore, by maintaining high piezoelectric characteristics while having thermal and electrical stability in a wide temperature range, piezoelectric application parts and dielectric application parts, using same, can be stably used without degradation in characteristics under a wide range of usage conditions such as temperature, electric field, and pressure.
The present invention provides a carbon honeycomb filter canning assembly comprising: a filter array having carbon honeycomb filters which are composed of a plurality of cells each having a plurality of vent holes and which are arranged adjacently to each other so as to form a pre-set alignment; and a canning housing for canning the filter array, wherein the canning housing includes: a canning part which encompasses all of the filter array and of which the upper and bottom portions corresponding to the plurality of vent holes can be ventilated; and a spacer part provided at the upper or lower side of the canning part so as to form a separation space between the canning part and the canning part of the other side, which faces same in the vertical direction, when the canning housings are stacked.
B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
3.
ADSORPTION TOWER HAVING FLOW DISPERSION FUNCTION, AND VOLATILE ORGANIC COMPOUND TREATMENT SYSTEM HAVING SAME
The present invention relates to an adsorption tower having a flow dispersion function, the tower comprising: a chamber having a purification space for gas containing volatile organic compounds; an inlet duct connected to an inlet of the chamber so as to introduce gas containing volatile organic compounds into the purification space; an exhaust duct connected to an outlet of the chamber so as to discharge, from the purification space, gas from which volatile organic compounds have been treated; a filter unit installed in the purification space so as to treat volatile organic compounds; and a flow dispersion unit radially disposed between the inlet and the filter unit so as to disperse and supply, to the filter unit, gas containing volatile organic compounds introduced through the inlet duct.
B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
A volatile organic compound treatment system according to the present invention comprises: three or more adsorption towers provided with filters for adsorbing volatile organic compounds, each of the towers performing either one of an adsorption process and a regeneration process for the filters; and a control unit for controlling the adsorption process and the regeneration process of each adsorption tower, wherein the control unit controls at least two of the adsorption towers to perform the adsorption process and controls the rest of the adsorption towers, which are not performing the adsorption process, to perform the regeneration process, and upon completion of the regeneration process according to a preset condition, to switch processes, on a one-to-one basis, with some of the adsorption towers which are performing the adsorption process.
The present invention relates to an adsorption filter canning assembly structure which comprises: adsorption filter canning assemblies including filter arrays in which honeycomb-type activated carbon adsorption filters, comprising a plurality of cells having a plurality of ventilation holes formed therein, are arranged adjacent to one another so as to form a preset arrangement and canning housings for canning the filter arrays by accommodating same therein; and stacking brackets, each of which is interposed between one of the adsorption filter canning assemblies and another so as to stack same.
B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
6.
HONEYCOMB-TYPE ACTIVATED CARBON ADSORPTION FILTER CANNING ASSEMBLY AND VOLATILE ORGANIC COMPOUND PROCESSING SYSTEM COMPRISING SAME
Disclosed in the present invention is a honeycomb-type activated carbon adsorption filter canning assembly comprising: a filter array in which honeycomb-type activated carbon adsorption filters each having a plurality of cells having formed therein a plurality of ventilation holes are arranged adjacent to one another and form a preset arrangement; and a canning housing for canning the filter array, wherein the canning housing comprises: a housing body formed to cover the side region of the filter array to entirely surround the filter array and having an upper portion and a bottom portion which correspond to the plurality of ventilation holes and are open; a lower mesh frame formed with a mesh structure, attached to the open bottom portion of the housing body, and arranged to cover the lower region of the honeycomb-type activated carbon adsorption filters having formed therein the plurality of ventilation holes; and an upper mesh frame formed with a mesh structure, attached to the open upper portion of the housing body, and arranged to cover the upper region of the honeycomb-type activated carbon adsorption filters having formed therein the plurality of ventilation holes.
The present invention relates to a method for preparing an ammonia decomposition catalyst comprising the steps of: (a) pretreating a Ce-oxide catalyst support by calcining same; (b) supporting a catalytically active material on the catalyst support; and (c) preparing catalyst powder by drying and calcining a carrier.
The present invention provides a system for processing volatile organic compounds (VOC), the system comprising: at least one VOC filter which adsorbs volatile organic compounds emitted from a VOC emission facility, the VOC filter being a honeycomb filter comprising activated carbon; and an air conditioner which performs air conditioning and supplies the conditioned air to the VOC emission facility, wherein the air conditioner performs air conditioning by using air purified by the VOC filter and supplies the conditioned air to the VOC emission facility.
F23G 7/06 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of specific waste or low grade fuels, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
F23J 15/02 - Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
A honeycomb activated carbon filter regeneration device having an improved ability to cause the desorption of volatile organic compounds (VOCs) adsorbed on a honeycomb activated carbon filter (100) according to the present invention disclosed herein comprises: a combustion unit (120) in which the VOC gas is burned; a heat storage unit (130) that includes a catalyst and a heat storage material to preheat the VOC gas and supply same to the combustion unit; an air supply pipe (160) that supplies air required to burn the VOC gas in the combustion unit; an exhaust pipe (170) in which an exhaust fan is installed to externally discharge a portion of combustion gas burned in the combustion unit; a circulation pipe (180) that is connected to the exhaust pipe and equipped with a circulation fan to circulate, toward the honeycomb activated carbon filter, a portion of the combustion gas not discharged via the exhaust pipe; a supply pipe (140) that is connected to the honeycomb activated carbon filter and the heat storage unit and allows the combustion gas moved by the circulation fan to separate the VOC gas adsorbed on the honeycomb activated carbon filter and move to the combustion unit; and a high-temperature gas suction pipe (160) that is installed to connect the combustion unit and the circulation pipe and suctions the combustion gas. Here, the honeycomb activated carbon filter is composed of activated carbon having a controlled pore size, a binder, and a filler.
B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
B01D 39/20 - Other self-supporting filtering material of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires
10.
AMMONIA DECOMPOSITION CATALYST FOR HYDROGEN GENERATION AND METHOD FOR PREPARING SAME
The present invention provides a method for preparing an ammonia decomposition catalyst comprising the steps of: (a) preparing a Ru precursor solution; (b) immersing the Ru precursor solution in a catalyst support containing SiC, chabazite-zeolite (CHA-Zeolite), or a combination thereof; and (c) preparing an ammonia decomposition catalyst by drying and then calcining the catalyst support.
3), the single crystal of uniform composition can be provided without a composition gradient even in case of complex, chemical composition thanks to a solid phase single crystal growth method, and in particular, the piezoelectric single crystal is provided in a form which causes large resistance to a mechanical impact, and facilitates mechanical processing, so the piezoelectric single crystal can usefully be applied to the piezoelectric application component and the dielectric application component, like ultrasonic transducers, piezoelectric actuators, piezoelectric sensor, dielectric capacitors, using the piezoelectric single crystal pertain.
The present invention provides a volatile organic compound treatment system including: a regeneration device in which at least one VOC filter desorbs a pre-adsorbed volatile organic compound to regenerate the VOC filter, the VOC filter corresponding to a filter formed of activated carbon and having a honeycomb shape; a heat exchanger for exchanging heat with external air by using waste heat generated from an incinerator and providing the external air heated through heat exchange to the regeneration device; and a nitrogen generator provided between the regeneration device and the heat exchanger and providing nitrogen to the regeneration device.
B01D 46/84 - Chemical processes for the removal of the retained particles, e.g. by burning by heating only
B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
The present invention relates to a honeycomb-type activated carbon adsorbent composition having improved volatile organic compound desorption performance, and more specifically, the present invention comprises pore size-controlled activated carbon, a binder, and a filling material. An activated carbon adsorbent comprising said components has improved volatile organic compound desorption performance by using the pore size-controlled activated carbon and thus may be regenerated.
B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
B01J 20/08 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group comprising aluminium oxide or hydroxideSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group comprising bauxite
B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
B01D 53/02 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
14.
PIEZOELECTRIC SINGLE CRYSTAL INCLUDING INTERNAL ELECTRIC FIELD, METHOD FOR MANUFACTURING SAME, AND PIEZOELECTRIC AND DIELECTRIC APPLICATION COMPONENTS USING SAME
Provided is a piezoelectric single crystal comprising an internal bias electric field, a method of manufacturing the same, and piezoelectric and dielectric application components using the piezoelectric single crystal. The piezoelectric single crystal shows that as a change in each composition of [A] site ions, [B] site ions and [O] site ions from a perovskite type crystal structure ( [A] [B] O3), and oxygen partial-pressure during heat treatment in terms of a manufacturing process are controlled, while maintaining the inherent high dielectric constant and piezoelectric constant, the high internal bias electric field (EI) characteristic essential for the electrical stability of the piezoelectric single crystal is simultaneously satisfied. Therefore, piezoelectric application components and dielectric application components using the piezoelectric single crystal having excellent characteristics can be used in a wide temperature range and operating voltage conditions.
H10N 30/074 - Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base by depositing piezoelectric or electrostrictive layers, e.g. aerosol or screen printing
H10N 30/097 - Forming inorganic materials by sintering
15.
PIEZOELECTRIC SINGLE CRYSTAL-POLYCRYSTALLINE CERAMIC COMPOSITE, PREPARATION METHOD THEREFOR, AND PIEZOELECTRIC AND DIELECTRIC APPLICATION COMPONENTS USING SAME
Provided is a piezoelectric single crystal-polycrystal ceramic composite, a method of manufacturing the same, and piezoelectric and dielectric application components using the piezoelectric single crystal-polycrystal ceramic composite. The piezoelectric single crystal-polycrystal ceramic composite shows that complexation is carried out by the optimization of a ratio between grain size distributions of a piezoelectric single crystal and polycrystal ceramic grains, and a volume ratio of the contained piezoelectric single crystal so that mass production simultaneously with excellent piezoelectric characteristics of the piezoelectric single crystal can be realized, and the cost of production can be reduced, so the piezoelectric single crystal-polycrystal ceramic composite can be applied to piezoelectric and dielectric application components, like ultrasonic transducers, piezoelectric actuators, piezoelectric sensors, dielectric capacitors, electric field-generating transducers, and electric field and vibration-generating transducers, using the piezoelectric single crystal-polycrystal ceramic composite, and the piezoelectric single crystal-polycrystal ceramic composite can enhance piezoelectric characteristics and competitiveness in prices.
xx) on a diesel particulate filter (DPF) for purifying an exhaust gas by collecting the particulate matter, wherein the diesel particulate filter is coated with the denitrification catalyst in a slurry state having a particle size of 2-4 ㎛, a pH of 5-7, and a viscosity of 150-300 cp.
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/025 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
17.
ELECTRIC FIELD-VIBRATION GENERATING TRANSDUCER HAVING PIEZOELECTRIC MATERIAL OF HIGH DEGREE OF DISPLACEMENT, AND MANUFACTURING METHOD THEREOF
Provided is an electric field-vibration generating transducer having a piezoelectric material of a high degree of displacement, and a manufacturing method thereof. The electric field-vibration generating transducer lowers the cost of production through miniaturization simultaneously with realizing excellent generating characteristics of the electric field-vibration generating transducer based on high efficiency and low voltage driving because the piezoelectric material of the high degree of displacement (high strain piezoelectrics) having a high piezoelectric constant (d33=1,000 to 6,000 pC/N), a high dielectric constant (K3T=6,000 to 15,000) as well as a low dielectric loss (tan δ<2%) is applied thereto, so the electric field-vibration generating transducer may accelerate the movement of a material, a chemical action, and a biological reaction, and may be applied to a medical device for the purpose of treatment for tumors aimed at human bodies and animals.
A61H 23/02 - Percussion or vibration massage, e.g. using supersonic vibrationSuction-vibration massageMassage with moving diaphragms with electric or magnetic drive
B06B 1/06 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
18.
HANDGUARD ASSEMBLY, SYSTEMS FOR HANDGUARD SLEEVE ATTACHMENTS, AND RELATED FIREARMS AND METHODS
The invention as described herein includes a handguard assembly for attachment to an upper receiver of a firearm It includes a barrel nut hat extends from a first end to second end and has a convexly curving outer surface that defines an annular groove extending around at least a portion of the circumference of the barrel nut. The adapter is structured to be capable of mechanical attachment to the handguard sleeve at the handguard sleeve's first end and had a first end that has an internal diameter that is dimensioned so that the second end of the barrel nut is insertable into the first end of the adapter. The adapter further includes an adapter body comprising a wall having an outer surface and at least one wedge pocket is disposed on the outer surface of the adapter body wall, the wedge pocket comprising an upper portion and a lower portion, wherein the lower portion comprises a slot in the outer surface of the wall having a bottom in the adapter body, and the upper portion comprises an aperture defined by the adapter body wall. Included also is at least one locking wedge having an upper section and a lower section, wherein the upper section is dimensioned to be insertable into and through the aperture of the upper portion of the wedge pocket and the lower section is dimensioned to be biased into the slot of the lower portion of the wedge pocket, and wherein the upper section bears an upper surface that includes a concavely curving surface and a center-placed tab extending from the upper surface, the tab being dimensioned to be insertable into the annular groove of the barrel nut and the concavely curving surface having a slope substantially the same as the slope of the convexly curving outer surface of the barrel nut so that when the tab is inserted into the annular groove of the barrel nut the concavely curving surface is positioned concentrically adjacent to the convexly curving outer surface of the barrel nut.
3333 T=6,000-15,000), and a low dielectric loss (tan δ<2%) to achieve excellent vibration generating characteristics in a high-efficiency and low-voltage driving electric field and vibration generating transducer, and can reduce the unit cost of production through miniaturization. Therefore, the electric field and vibration generating transducer promotes material transport, chemical activity, and biological reactions, and can be applied to medical devices for treating tumors in humans and animals.
M of the magazine housing, and a limiter bottom edge that is engageable to a lock plate. The lock plate of the assembly has a top surface engageable to the bottom surface of the limiter body and bottom surface engageable to the lock plate of the magazine when the lock plate is placed against a bottom edge of the magazine housing. When a top surface of the lock plate is bonded to the limiter body, the limiter substantially irreversibly reduces the capacity of the box magazine. Also included are magazines fitted with the assembly and related methods of reducing the capacity of magazines.
The present invention provides an energy storage system comprising: at least one battery rack which comprises at least one battery pack; a container which accommodates the battery rack; and at least one catalytic structure which is located in the container, and in which hydrogen that has leaked from the battery pack reacts with a catalyst material and is recombined as steam.
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 50/30 - Arrangements for facilitating escape of gases
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H01M 50/251 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
G08B 17/10 - Actuation by presence of smoke or gases
33), controlling the composition of ions in the [A] position, and, by a solid-state single crystal growth method, may provide a single crystal having a uniform composition without a composition gradient, even in case of a complicated chemical composition, and especially, the piezoelectric single crystal of the present invention exhibits great resistance to mechanical impact and is provided so as to be easily machined and thus may be usefully applied in the fields of piezoelectric application parts and dielectric application parts using the piezoelectric single crystal, including an ultrasonic transducer, piezoelectric actuator, piezoelectric sensor and dielectric capacitor.
H01L 41/113 - Piezo-electric or electrostrictive elements with mechanical input and electrical output
H01L 41/09 - Piezo-electric or electrostrictive elements with electrical input and mechanical output
23.
PIEZOELECTRIC SINGLE CRYSTAL-POLYCRYSTALLINE CERAMIC COMPOSITE, PREPARATION METHOD THEREFOR, AND PIEZOELECTRIC AND DIELECTRIC APPLICATION COMPONENTS USING SAME
The present invention relates to a piezoelectric single crystal-polycrystalline ceramic composite, a preparation method therefor, and piezoelectric and dielectric application components using the piezoelectric single crystal-polycrystalline ceramic composites. The piezoelectric single crystal-polycrystalline ceramic composite of the present invention is formed by compositing through optimization of the particle size distribution between piezoelectric single crystals and polycrystalline ceramic particles and the volume ratio of piezoelectric single crystals contained therein, and thus can implement mass production along with excellent piezoelectric characteristics of piezoelectric single crystals, leading to a low unit cost of manufacturing, so that the composite can be applied to piezoelectric application components and dielectric application components including ultrasonic transducers, piezoelectric actuators, piezoelectric sensors, dielectric capacitors, electric field radiation transducers, and electric field-vibration radiation transducers, which employ piezoelectric single crystal-polycrystalline ceramic composites, and can improve piezoelectric characteristics and price competitiveness.
H01L 41/113 - Piezo-electric or electrostrictive elements with mechanical input and electrical output
H01L 41/09 - Piezo-electric or electrostrictive elements with electrical input and mechanical output
24.
PIEZOELECTRIC SINGLE CRYSTAL INCLUDING INTERNAL ELECTRIC FIELD, METHOD FOR MANUFACTURING SAME, AND PIEZOELECTRIC AND DIELECTRIC APPLICATION COMPONENTS USING SAME
3II), which are essential for the electrical stability of the piezoelectric single crystal, are simultaneously satisfied, and thus the piezoelectric application components and dielectric application components using the piezoelectric single crystal having excellent characteristics can be manufactured and used under wide temperature region and operational voltage conditions.
The invention relates to a capacity limiting assembly that provides substantially irreversible alteration of a box magazine to limit its cartridge capacity wherein the box magazine comprises a,magazine housing having a vertical dimension Ym, a magazine spring having at least 1 coil, and a follower. The assembly includes a limiter body and a lock plate. The limiter body has a top edge engageable with a bottom surface of the follower that is operatively associated with a top of the magazine spring extending into the cartridge reservoir and is configured to be disposed substantially within the at least one coil of the magazine spring. The limiter has a vertical dimension YL that is less than the vertical dimension I'm of the magazine housing, and a limiter bottom edge that is engageable to a lock plate. The lock plate of the assembly has a top surface engageable to the bottom surface of the limiter body and bottom surface engageable to the lock plate of the magazine when the lock plate is placed against a bottom edge of the magazine housing. When a top surface of the lock plate is bonded to the limiter body, the limiter substantially irreversibly reduces the capacity of the box magazine. Also included are magazines fitted with the assembly and related methods of reducing the capacity of magazines.
A method for forming a ceramic matrix composite bearing includes preparing a layup slurry from a mixture of water, pre-ceramic polymer and refractory filler. The method further includes forming a concentric stack of slurry-impregnated fabric sleeve layers over a rod-shaped inner mold and applying an outer mold to form a mold assembly. The method also includes heating the mold assembly to form a tubular green body and rough cutting the green body to bearing length. In addition, the method includes heat-treating the bearing and performing a polymer infiltration and pyrolysis treatment. The method further includes conducting dimensional stability treatment processes on the bearing and final grinding and machining to meet pre-determined specifications.
B28B 21/94 - Methods or apparatus for treating or reshaping for impregnating or coating by applying liquids or semi-liquids
C04B 35/80 - Fibres, filaments, whiskers, platelets, or the like
C04B 35/626 - Preparing or treating the powders individually or as batches
B28B 21/50 - Details of compression or compacting means
B28B 21/18 - Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using expansible or retractable mould or core elements
B28B 21/42 - Methods or machines specially adapted for the production of tubular articles by shaping on or against mandrels or like moulding surfaces
B28B 21/88 - Cores adjustable, collapsible or expansible
B28B 21/20 - Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using expansible or retractable mould or core elements using inflatable cores, e.g. having a frame inside the inflatable part of the core
C04B 35/52 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite
A handguard comprising a plurality of layers of composite material. At least one of the layers is a ceramic matrix composite and at least one of the layers, and preferably the outer later, is a carbon fiber reinforced composite. In addition, the outermost layer is preferably a woven fabric carbon fiber reinforced composite. In one embodiment, one or more ceramic matrix composite layers is sandwiched between layers of carbon fiber reinforced composite. In another embodiment, an innermost layer is a ceramic matrix composite and the outermost layer is a carbon fiber reinforced composite.
The present application teaches a magazine (10) for a firearm. In one embodiment, the magazine includes a polymeric housing (32) including an embedded metal support guard (81) and an external metal feed lip assembly (60).
The present application teaches a magazine (10) for a firearm. In one embodiment, the magazine includes a polymeric housing (32) including an embedded metal support guard (81) and an external metal feed lip assembly (60).
The present application teaches fire-resistant structures and methods for wellhead outlets, and methods of using same. In one embodiment, the fire-resistant structure includes a plurality of spacing assemblies (32a-f) that space a plurality of fire-resistant panels (42, 44, 46, 48, 49, 50, 53, 55) away from the exterior surface of a wellhead outlet (1), such that a space or volume is created between the fire-resistant panels (42, 44, 46, 48, 49, 50, 53, 55) and the exterior surface of the wellhead outlet (1).
A magazine well extension for a firearm having a magazine well and a trigger guard consists of a tapered monolithic hollow extension body closely matched to the magazine well opening. The bottom opening is larger than the top opening to more loosely receive the magazine for easier insertion. The extension is attached to the magazine well opening by upward facing rails on opposite sides at the top of the extension body which are matingly received by complimentary slots in the bottom of the magazine well. A second attachment point located at the rear of the extension includes a yoke which retains a laterally slidable captive pin that engages an outwardly extending tang on the trigger guard of the firearm. A forwardly extending lip at the front of the magazine well engages a groove on the inside wall of the extension to vertically support the extension at the front.
RT), high coercive electric field Ec and improved mechanical properties and thus can be used in high temperature ranges and high voltage conditions. Furthermore, the piezoelectric single crystals are produced by the solid-state single crystal growth adequate for mass production of single crystals and the single crystal composition is developed not to contain expensive raw materials so that the piezoelectric single crystals can be easily commercialized. With the piezoelectric single crystals and piezoelectric single crystal application parts, the piezoelectric and dielectric application parts using the piezoelectric single crystals of excellent properties can be produced and used in the wide temperature range.
H01L 41/18 - Selection of materials for piezo-electric or electrostrictive elements
H01L 41/00 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof
C04B 35/00 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products
35.
PIEZOELECTRIC SINGLE CRYSTAL AND METHOD OF PRODUCTION OF SAME, PIEZOELECTRIC ELEMENT, AND DIELECTRIC ELEMENT
A piezoelectric single crystal and piezoelectric and dielectric application parts using the same are provided, which have all of high dielectric constant K3T, high piezoelectric constants (d33 and K33), high phase transition temperatures (Tc and TRT), high coercive electric field Ec and improved mechanical properties and thus can be used in high temperature ranges and high voltage conditions. Furthermore, the piezoelectric single crystals are produced by the solid-state single crystal growth adequate for mass production of single crystals and the single crystal composition is developed not to contain expensive raw materials so that the piezoelectric single crystals can be easily commercialized. With the piezoelectric single crystals and piezoelectric single crystal application parts, the piezoelectric and dielectric application parts using the piezoelectric single crystals of excellent properties can be produced and used in the wide temperature range.
HIGH-PRESSURE/HIGH-TEMPERATURE SEALS BETWEEN GLASS FIBERS AND METALS, DOWNHOLE OPTICAL FEEDTHROUGHS CONTAINING THE SAME, AND METHODS OF PREPARING SUCH SEALS
A glass-to-metal seal for use in high temperature and high pressure environments is described. The glass- to-metal seals includes an optical fiber (20) having a metallized portion (18), the metallized portion (18) having an outer dimension; an object (12) having a high strength, corrosion-resistant alloy, the object having an outer surface and an inner surface defining a bore, the bore having a dimension larger than the outer dimension of the metallized portion of the optical fiber; and a hardened solder material disposed between the metallized portion of the optical fiber and the inner surface of the bore, such that a hermetic seal is provided between the metallized portion of the optical fiber and the inner surface of the bore; wherein the solder includes a substance having a melting temperature greater than about 250~ C.
patents
