Abstract: A filter cartridge includes a cylindrical inner filter, and a removable and replaceable outer filter of media. The removable and replaceable filter includes more than one layer of media therein. One application for the filter cartridge is in a mist collector arrangement.

Abstract: A combined vapor barrier and water assembly for securement to the underside of covers of heated water tubs and pools stands by and around an intentionally made drain opening in an otherwise water tight cover, to provide a drain passageway to be used, if necessary, whenever rain water might unwantedly enter the interior of the cover, and while standing by, to provide a vapor barrier preventing heated vapors from rising upwardly through the drain passageway. In a preferred embodiment, at least two dense weave cloth members, spaced apart, each extend completely across the cross section of the drain passageway, while positioned within a hollow contoured housing of the assembly, which is adapted to be secured to the underside of the cover round the intentionally made drain opening, to provide the drain passageway for the exiting rain water that might unwantedly collect in a cover which was originally watertight.

Abstract: A solid propellant gas generator incorporates staged gas cooling and filtration so as to generate cool, clean gases having a composition suitable for use in an automobile airbag inflator. Carbon yarn is used as a lightweight primary heat sink within the filter thereby increasing the dimensional stability of the gas generator.

Abstract: A germ-removing filter includes a filter substrate, and an antimicrobial material dispersedly mixed into the filter substrate. The antimicrobial material is antimicrobial fiber bonded with silver ion. The total amount of the silver ions present in the filter substrate material when mixed with the antimicrobial fiber is equivalent to an amount of silver ions contained in an antimicrobial fiber which is mixed at more than 10 wt % in the filter substrate and which has entire exchange groups or bonding groups thereof exchanged or bonded with silver ions. An apparatus using the filter for maintaining a sterile room under sterile condition is also disclosed.

Abstract: An air cleaning system having a forced negative pressure generating function is provided for defining a space in a room for utilizing the space as a smoking area or the like in which contaminated air such as smoke is prevented from flowing out of the space and is cleaned. The air cleaning system having a forced negative pressure generating function has an air curtain producing unit having a blow-out port for producing air curtains to surround a predetermined space, an air sucking unit having a suction port open to the predetermined space defined by the air curtains for sucking air in the predetermined space, an air exhausting unit having an exhaust port open to the outside of the predetermined space for exhausting air sucked by the air sucking means to the outside of the predetermined space, an air cleaner unit interposed between the exhaust port and the suction port, and an air cleaner body supported by a plurality of stems for accommodating the components.

Abstract: A microfiltrated clean air supply system for providing a highly filtered supply of clean air suitable for aseptic packaging (for example, class 100 or better) in a filling machine is provided. In an embodiment, the clean air supply system includes a housing having an inlet and an outlet. A first plurality of filters are arranged in order of increasing collection efficiency within the housing adjacent the inlet. Similarly a second plurality of filters are arranged within the housing near the outlet. The second plurality of filters are also arranged in order of increasing collection efficiency. The clean air supply system also includes a chamber located between the first plurality of filters and the second plurality of filters. The chamber includes a wall separating the chamber from the second plurality of filters. A blower is arranged in the chamber between the first and second plurality of filters.

Abstract: An interlocking dual filter includes a first filter element having a filter media enclosed by a frame and a sealing gasket disposed around the frame. The frame of the first filter element has a depending flange which defines a space for receiving a second filter element having a different filter media. The flange includes a plurality of recesses which form a first latching arrangement. The first recesses are aligned with latching tabs which extend laterally from the frame of the second filter element so that when the second filter element is placed within the frame, the second filter element latches with the first filter element. In accordance with one embodiment, the filter media of the first and second filter elements are different so that the filter assembly may be customized to accommodate various air stream conditions and utilizations.

Abstract: A method for continuously measuring particulate nitrate in a gas sample, comprising the steps of passing the gas sample through an inertial impactor with a 50% cut off at 2.5 microns, removing ambient pollutant gases from the gas with diffusion denuders, passing the gas through a first path so as to contact the gas with a coated filter so as to convert particulate nitrate to nitric acid vapor or passing the gas through a second path so as to contact the gas with coated filters to trap particulate nitrate and ammonia, and measuring nitric acid vapor and residual ambient pollutant gases produced from the first path and residual ambient pollutant gases produced from the second path with a chemiluminescent monitor, the difference in the signal produced from the gases from the two paths being a measurement of the particulate nitrate in the gas sample.

Abstract: Energy conservation structure is provided for a controlled environment room having an opening in a wall thereof through which work is passed and through which room air under pressure may be discharged from the room, thereby to prevent contamination of the room air by contaminants in outside air entering the room through such opening, the energy conservation structure including structure providing suction adjacent to the wall opening to induce the flow of room discharge air thereto, the latter structure being constructed and arranged for communication with structure and apparatus for recycling the discharge air of such induced flow to the controlled environment room.

Abstract: A combination respiratory filter and sampling device has been developed which collects airborne contaminants for respiratory exposure measurements. The devices, which fit existing commercial half-mask respirators, are generally smaller and lighter in weight than existing filters, and have low resistance to airflow, so they can be comfortably worn by people performing their normal work duties. Each device consists of at least a front, a middle and a back section which can be independently separated and analyzed by traditional laboratory techniques. The filtering and sampling media thicknesses and types can be adapted to target specific compounds.

Abstract: A vacuum pump filter for filtering debris from a semiconductor system is disclosed. The vacuum pump filter includes an inlet port for connecting to a chamber. A first filter holder is connected to the inlet port for filtering large debris. A second filter holder for filtering middle debris is connected to the first filter holder. A third filter holder is connected to the second filter holder for filtering small debris. A outlet port is connected to the third filter holder via a terminal. The other terminal of the outlet port is connected to a pump system.

Abstract: A combination respiratory filter and sampling device has been developed which collects airborne contaminants for respiratory exposure measurements. The devices, which fit existing commercial half-mask respirators, are generally smaller and lighter in weight than existing filters, and have low resistance to airflow, so they can be comfortably worn by people performing their normal work duties. Each device consists of at least a front, a middle and a back section which can be independently separated and analyzed by traditional laboratory techniques. The filtering and sampling media thicknesses and types can be adapted to target specific compounds.

Abstract: A combination respiratory filter and sampling device has been developed which collects airborne contaminants for respiratory exposure measurements. The devices, which fit existing commercial half-mask respirators, are generally smaller and lighter in weight than existing filters, and have low resistance to airflow, so they can be comfortably worn by people performing their normal work duties. Each device consists of at least a front, a middle and a back section which can be independently separated and analyzed by traditional laboratory techniques. The filtering and sampling media thicknesses and types can be adapted to target specific compounds.

Abstract: A combination respiratory filter and sampling device has been developed which collects airborne contaminants for respiratory exposure measurements. The devices, which fit existing commercial half-mask respirators, are generally smaller and lighter in weight than existing filters, and have low resistance to airflow, so they can be comfortably worn by people performing their normal work duties. Each device consists of at least a front, a middle and a back section which can be independently separated and analyzed by traditional laboratory techniques. The filtering and sampling media thickness and types can be adapted to target specific compounds.

Abstract: A mobile vessel which reduces the transmission of noxious fumes into the surrounding atmosphere emanating from material contained in a material chamber in the vessel, such as bituminous roofing material. An air plenum extends along the vessel beneath a filtration unit and receives noxious fumes from the material chamber and from an outside source through ducts. Ambient air is mixed with the fumes for cooling the fumes upstream from the filtration unit. A heater and stirrer are located within the material chamber for uniformly heating the material. A power operated ram and heated breaker bars move and break a solidified key of the material for subsequent discharge into the material chamber. A blower creates a negative pressure in the air plenum and filtration unit for moving the fumes and ambient cooling air therethrough.

Abstract: A solid propellant gas generator incorporates staged gas cooling and filtration so as to generate cool, clean gasses having a composition suitable for use in an automobile airbag inflator. Ceramic foam balls are used as a primary heat sink within the filter thereby increasing the dimensional stability of the gas generator.

Abstract: An inducer with reduced number of blades and varying density porous media disks are arranged in a deoiler mounted on a rotating shaft for total free separation of the oil from and air/oil mixture. The porous media disks are arranged with the lower density grade coming into contact with the air/oil mixture and proceeds toward the higher density grade. The arrangement of the stages of separation, the specially designed oil discharge holes and the flow geometry maximizes oil separation and removal and reduces pressure losses to control the pressure drop of the deoiler.

Abstract: The present invention provides a respirator filter system suitable for filtering toxic agents, including organic vapors, acid gases, formaldehyde, ammonia, and methylamine as well as pesticides, CS and CN tear gases, dusts, mists, fumes and radionuclides from environmental air to be respired by a user of the filter system. In general, the filter system of the present invention includes a cartridge containing a layer of an unimpregnated activated carbon, a layer of an activated carbon impregnated with sulfate, molybdenum and at least one impregnate selected from the group consisting of copper and zinc, and a HEPA filter. Cartridges containing these adsorbents or adsorbents similar to them (in carbon tetrachloride activity and chemistry) have been discovered to be uniquely capable of filtering a broad range of toxic agents.

Abstract: A smoke removal device, especially designed for use in welding, having one or more portable funnels, with a wide opening through which suction may be directed to remove smoke from particular areas where combustion is taking place, and a narrow opening opposite to the wide opening, a vacuum device for creating the suction by which the smoke is removed, the vacuum device having an inlet valve for each funnel, and hoses connecting the narrow opening of each portable funnel to one of the inlet valves of the vacuum device. In a preferred embodiment, the portable funnel is connected to a base containing magnets. The funnel is connected to the base by a first cylinder extending downward from the funnel, with the first cylinder fitting inside a second cylinder attached to the base, with the funnel and first cylinder being rotatable in relation to the base and the second cylinder. A wheeled, multifilter carriage is provided to clean smoke coming from the funnel before it is exhausted into the surrounding air.

Abstract: A fluid filter arrangement including layered filter media capable of successively filtering varying sized particulate matter from a treated fluid stream with each layer of the layered filter media having a substantially equal terminal pressure drop thereacross.

Abstract: A combination respiratory filter and sampling device has been developed which collects airborne contaminants for respiratory exposure measurements. The devices, which fit existing commercial half-mask respirators, are generally smaller and lighter in weight than existing filters, and have low resistance to airflow, so they can be comfortably worn by people performing their normal work duties. Each device consists of at least a front, a middle and a back section which can be independently separated and analyzed by traditional laboratory techniques. The filtering and sampling media thicknesses and types can be adapted to target specific compounds.

Abstract: A fluid filter is provided for separating entrained particulate matter from a moving fluid stream. The fluid filter includes a filter structure for mounting the filter on a supporting surface, a plurality of nested filter frames, and a filtration medium carried by each of the filter frames. The filter structure has a fluid inlet and a fluid outlet for conveying the fluid stream therethrough. The nested filter frames are located within the filter structure in spaced-apart relation to each other. The filtration media are interposed between the fluid inlet and the fluid outer of the filter structure, and define on one side thereof an upstream filter surface and on the other side thereof a downstream filter surface.

Abstract: The invention features a clean room and a chemical air filter suitable for use in the air handling system of the clean room directly upstream of high-efficiency particulate air (HEPA) filters. The chemical filter is of the pleated filter type comprising an air permeable, relatively thick web of non-woven fibrous carrier material of pleated form. The web includes a matrix formed of a large multiplicity of synthetic fibers and is characterized in that activated carbon particles are distributed throughout the web, bound in the interstices of the matrix in a manner preventing loss to the air of particles in quantity substantially detrimental to the performance of the HEPA filter. The activated carbon particles are of the type selected to remove the predetermined gas-phase contaminant from the air from the source. The invention also features a non-off gassing filter casing that may easily be installed into existing clean room air handling systems.

Abstract: An air purifier including a housing, a front cover, a front wire gauze filter, an anion generating pin board, a dust collector, and an active carbon filter, wherein: the housing has a plurality of parallel tracks horizontally disposed at different elevations for mounting the front wire gauze filter, the anion generating pin board, the dust collector, and the active carbon filter, a plurality of arched metal springs fixedly fastened to the parallel tracks for connecting power supply to the anion generating pin board and the dust collector, a side cover, and a micro switch which turns on power supply when the side cover is installed, or to turn off power supply when the side cover is removed from the housing; the dust collector has a plurality of equally spaced round holes over the whole area thereof, and is controlled to produce positive ions; the anion generating pin board has a plurality of triangular projecting plates perpendicularly raised from one side thereof and respectively aimed at the center of every

Abstract: An air bag inflator (10) includes an ignitable gas generating material (50), an initiator (36) for igniting the gas generating material (50), and a tubular wall (100) defining a combustion chamber (54) containing the gas generating material (50). A plurality of gas flow openings (150) extend radially outward from the combustion chamber (54) through the tubular wall (100). A filter (102) extends circumferentially and axially over the tubular wall (100). The tubular wall (100) includes a structure (160) defining a space which provides plenum (170) extending radially outward from the gas flow openings (150) to the filter (102).

Abstract: An air filtering system for filtering air streams for use in a clean environment to effectively remove a process-limiting molecular contaminant therefrom comprising sequentially arranged upstream and downstream air filtering beds. The upstream air filtering bed is positioned to receive an air stream for use in the clean environment and comprises an upstream reagent selected to effectively remove the process-limiting molecular contaminant from the air stream as the air stream passes through the upstream air filtering bed, the upstream reagent releasing a characteristic volatile component into the air streams. The downstream air filtering bed is positioned to receive the air stream that has passed through the upstream air filtering bed and comprises a downstream reagent selected to remove the characteristic volatile component released by the upstream reagent into the air stream. Clean environments (e.g., a deep UV processing station) incorporating the above-mentioned air filtering system are also disclosed.

Abstract: A system which reduces the transmission of noxious fumes into the surrounding air during the application of a heated liquid roofing product on a roof. A mobile tanker or kettle contains a supply of the heated liquid. The air space within the tanker or vessel above the liquid product communicates with a mobile filtration unit by a first duct. A rooftop carrier for the liquid product has a fume collection hood which communicates with the filtration unit by a second duct. A blower in the filtration unit creates negative pressure which draws the noxious fumes from the tanker or vessel and carrier through the ducts and into and through the filtration unit. The filtration unit has a series of airtight chambers mounted on a mobile truck bed, each containing a different type of filtering medium to remove various components of the noxious fumes as the fumes move through the filtration unit.

Abstract: A suction air filter for an internal combustion engine of a hand-held working tool has a housing having an inlet opening for air sucked in and an outlet opening for the clean air exiting the suction air filter and supplied as combustion air to a suction channel of the internal combustion engine. The housing includes a plurality of filter chambers arranged in series one after another in a direction of air flow from the inlet opening to the outlet opening. Each one of the filter chambers has at least one filter body positioned therein through which filter body the air flows.

Abstract: An oil/vapor separator separates lubrication oil from refrigerant vapor in an air conditioning cycle. The separator includes a chamber in which are disposed upper and lower apertured buffer plates sandwiching a filter therebetween. Oil and vapor passing through the buffer plates and the filter exits the lower buffer plate in a swirling path so that centrifugal force displaces oil outwardly against a wall of the chamber, and the oil gravitates downwardly for collection at the bottom of the chamber. The refrigerant vapor is discharged through a vapor outlet pipe positioned centrally in the chamber. An apertured separating plate is situated between the lower buffer plate and the collected oil to isolate the collected oil from the swirling vapor. The vapor outlet pipe extends through the separating plate and is supported thereby.

Abstract: A filter arrangement of a heating or air-conditioning system in a motor vehicle consists of at least two filters which can be flowed through one after the other. Non-confusable filter exchange is achieved with the filters having different external dimensions and their reception locations having reception sizes assigned to the respective external dimensions so that each reception location is only able to receive a predetermined filter.

Abstract: The present invention is an improved sorbent filter for use in both particulate filtration and absorption of gaseous contaminants in a variety of applications, such as for filtration in a computer disk drive. The filter of the present invention provides previously unavailable levels of combined particulate filtration and contaminant sorption while being capable of ready reconditioning (such as through washing with D.I. water).

Abstract: A vacuum valve filter system has a plurality of diverting elements sandwiching a plurality of filter elements for filtering fluid passing from a cavity of a vacuum die. The diverter elements establish a serpentine fluid flow through the filter systems. Also, the filter elements are compressible, acting as a stop in the event of an overflow of molten material entering the filter system.

Abstract: A unitary candle filter employs a wrapping of continuous filamentary ceramic material in the form of a yarn or twine wrapped over a porous ceramic support tube to hold the support structure intact during a high pressure backwash operation. A thin filtering layer of a ceramic material is deposited over the support structure and the wrapping is embedded in the filtering layer.

Abstract: An oil delivery prevention device for a horizontal type rotary compressor for use in a refrigerating system. The device effectively separates the mixed gas into oil and refrigerant gas and prevents the oil from delivery along with the refrigerant gas to the refrigerating cycle. The oil delivery prevention device comprises at least three oil separating nets placed in a motor outer space inside a compressor casing and spaced out at regular intervals. Each of the first and third nets comprises a doughnut net part, a shielding plate provided on a center hole of the doughnut net part and an oil port formed on a lower center of the doughnut net part. The second oil separating net comprises a doughnut shielding plate, a net part provided on a center hole of the doughnut shielding plate and an oil port formed on a lower center of the doughnut shielding plate. The spaces formed between the spaced nets prevent interference between the refrigerant gas and the oil.

Abstract: A multi-stage honeycomb heater includes: at least two honeycomb heaters electrically connected with each other and disposed along a stream of fluid; the two honeycomb heaters including furthest upstream honeycomb heater and a an adjacent honeycomb heater which is adjacent to and downstream of the furthest upstream honeycomb heater; each of the two honeycomb heaters having an electrically conductive honeycomb structure the honeycomb structure of the upstream honeycomb heater having slits for adjusting its electrical resistance and/or element for adjusting heat capacity of the honeycomb structure so that the ratio of applied power to heat capacity of the furthest upstream honeycomb heater is larger than the ratio of applied power to heat capacity of the adjacent honeycomb heater. Thus the upstream heater and the downstream heater can give similar temperature increases without a temperature distribution along a flow direction during the engine warm-up.

Abstract: A getter-filter composite membrane element, comprising a sinterable getter material and a sinterable metal filter material, the composite element defining a matrix of substantially interconnected pores. Membrane elements may be comprised of at least three alternating layers of a first sinterable getter material layer and a second sinterable metal filter material layer, the first getter layer being located between the second filter layers, the second layers acting to hold the getter layer, and to retain the getter particles. Also disclosed is a method of making the getter-filter element.

Abstract: The present invention relates to a heat-resistant filter which is suitable for trapping particulate contained in a high temperature exhaust gas from an engine, and can be reconditioned by removing with burning the trapped particulate. This invention aims at providing a heat-resistant filter, which will suppress a rise in back pressure to a small amount even when exhaust gas processing is executed for a long period of time, will not cause problems in removing deposits through heating and burning by an electrical heat-generating member, and can endure corrosive action under a high-temperature acidic atmosphere. A filter layer having heat-resistant fibers laminated at random is provided between two air-permeable partitions, the first of which is disposed upstream in the direction of a fluid flow to be filtered and is formed of a planar fabric made of non-conductive heat-resistant fibers.

Abstract: The invention is a fluid filter and method of separating entrained particulate matter from a moving fluid stream. The fluid filter includes a filter structure for mounting the filter on a supporting surface, a plurality of nested filter frames, and a filtration medium carried by each of the filter frames. The filter structure has a fluid inlet zone and a fluid outlet zone for conveying the fluid stream therethrough. The nested filter frames are located within the filter structure in spaced-apart relation to each other. The filtration media are interposed between the fluid inlet zone and the fluid outlet zone of the filter structure, and define on one side thereof an upstream filter surface and on the other side thereof a downstream filter surface.

Abstract: During wafer fabrication, a transportable enclosure, such as a Standard Manufacturing InterFace (SMIF) pod encloses a nascent product, such as a semiconductor wafer, to protect the wafer against contamination during manufacture, storage or transportation. However chemical vapors emitted inside the pod can accumulate in the air and degrade wafers during subsequent fabrication. In order to absorb the vapors inside a closed pod, a vapor removal element typically including an activated carbon absorber, covered by a particulate-filtering vapor-permeable barrier, and covered by a guard plate with holes is disposed within the enclosure. A vapor removal element is disposed closely adjacent to each respective wafer. Alternatively, a single vapor removal element is located inside the enclosure. In certain instances, a fan or thermo-buoyant circulation causes any vapors located inside the enclosure to a vapor removal element for removal.

Abstract: An inflator (14) for inflating an air bag (12) includes a source of gas (62) for inflating the air bag, and a tubular wall (52) with a plurality of gas flow openings (86) for directing the gas to flow from the inside of the tubular wall (52) toward the air bag (12). The inflator (14) also includes a rupturable pressure controlling member (60) and a cylindrical filter assembly (56) with a plenum screen (76). The pressure controlling member (60) extends circumferentially around the inside of the tubular wall (52) and across the gas flow openings (86) to block the gas from flowing into the gas flow openings (86). The cylindrical filter assembly (56) is located between the source of gas (62) and the pressure controlling member (60). The plenum screen (76) extends circumferentially around the inside of the pressure controlling member (60), and has an edge (180) adjoining the pressure controlling member (60).

Abstract: An air filter apparatus for an HVAC system having a frame with a channel area formed therein and having legs extending into the channel area, and a filter material having a portion received within the channel area. The filter material extends across the frame. The legs of the frame extend so as to exert a compressive force on the edges of the filter material received therebetween. The filter material has a first flexible mesh layer, a fibrous layer, and a second flexible mesh layer formed in a sandwiched configuration. The frame has a T-shaped slot extending longitudinally along an outer surface of the frame. The frame also has a notch formed along a corner of the frame and extends around the frame. A bead of an elastomeric material is received within this notch so as to extend outwardly of the frame.

Abstract: A supplemental cylindrical air cleaner or filter is provided for the inlet snorkel of a conventional automotive air cleaner housing and the supplemental air filter or cleaner incorporates a molded body of open cell material with said body including two elongated, upwardly opening semi-cylindrical halves including opposite side upper marginal edges with said halves disposed in side-by-side juxtaposed position with adjacent upper marginal edges of adjacent halves integrally formed and joined by a living hinge portion of said material extending therealong. The cylindrical halves include integral partitions or disks spaced therealong and projecting outwardly from the open sides of the halves with the partitions of one of the halves staggered relative to the partitions of the other half.

Abstract: A denuder for collection of gases, consisting of a plurality of generally parallel elongated tubes having a surface formed from an inert non-metallic material, said tubes being configured and arranged to allow recovery of gaseous material collected on each said surface.

Abstract: A clarifying apparatus for waste and dirty filters of a cartridge type is used in the dry cleaning machine. The filters become dirty after they are used for a long time necessitating replacement. The clarifying apparatus is used to treat the dirty filters. The apparatus is used after a plurality of waste filters are connected in series and they are placed in a pressure tank 5 and sealed. The apparatus has a reheating means 6 installed around the outer circumferential face of the pressure tank, a circulation duct 53 connecting a side 51 of hot air taking-in and another side 52 of an outlet for hot air containing solvent has a cooling means 54 recovering solvent and a heating means 55 placed downstream of the cooling means. Hot air is supplied from a hot air taking-in port 51 of the pressure tank 5 to through the serially-connected core pipes 11 and around respective waste filters 1 in order to evaporate remaining solvent and recover it, and clarify the dirty filters.

Abstract: An antimicrobial air filter has a layer of fabric bearing porous activated carbon particulate deodorizing agents, a layer of polymeric expanded foam filter media impregnated with a biostat type antimicrobial agent and a pleated sheet of HEPA filtration media treated with the biostat. The layers are assembled such that the biostat does not migrate into the porous carbon particulates. The filter may be used in central air conditioning and heating systems without the need for an air circulator in addition to those conventionally employed.

Abstract: An air filter unit comprising a first sheet of filter material folded into a zig-zag configuration with a generally planar second sheet of fine mesh air penetrable material extending across apexes of the zig-zag fold on one or both sides of the filter. The second sheet includes peripheral portions which are folded up against the lateral edges of the first sheet to facilitate mounting of the filter unit within a frame.

Abstract: A filter for removing impurities from waste gases, and especially from the waste gases of an internal combustion engine, includes a filter body consisting of a plurality of compression moulded, high temperature resistant, sintered filter plates consisting of metal powder, metal chips, metallic fibres or a mixture of these materials, which are arranged on top of or behind one another and kept at a distance from one another by spacers, to form between them a plurality of flow channels. The flow channels are open at one end and closed at the other end in order to form inlet and outlet channels. The walls of the filter plate situated between the inlet and outlet channels constitute filter surfaces. The filter plates are formed by filter discs lying on top of one another, arranged in a filter housing and having a free or open central interior space, so that the waste gases flow radially through the filter discs from the outside towards the interior space or from the interior space towards the outside.

Abstract: A process is disclosed for the production of an improved catalytic converter for the cleaning of exhaust gases from internal-combustion engines, which includes a catalytic converter body through which the exhaust gases flow. The catalytic converter body is compression-molded from metal wire pieces or metal chips and is sintered after molding.

Abstract: A grease extractor includes a fan for forcibly flowing grease laden air to remove grease therefrom in cooperation with a membrane filter and a trap member. The grease extractor comprises a vessel with an inlet for introduction of the grease laden air and an outlet for discharging clear air removed of the grease. The membrane filter is disposed in a flow path between an inlet and an outlet of the extractor to seize the grease while passing the grease laden air therethrough. A trap member is disposed downstream of the membrane filter to deflect the air to cause collision of the grease laden air against the trap member to deposit the grease thereon. The trap member is formed with a recovery line for collecting and draining the deposit grease out of the vessel.

Abstract: The present invention relates to a method of filtering, at the end user's home, business or the like, a gas stream in which polychlorinated biphenyls (PCB's) have been concentrated at sufficient levels to be a significant health hazard.