Abstract: An apparatus, for storage and dispensing of a sorbable fluid, including a storage and dispensing vessel containing a solid-phase physical sorbent medium for holding a sorbable fluid, with heat transfer means being associated with the vessel for thermally managing heat effects due to adsorption and desorption of the sorbable fluid.

Abstract: An air dryer and reservoir assembly for providing compressed air from an air compressor (20) on a heavy motor vehicle which includes an air dryer (14) connected to receive compressed air from the air compressor (20) and a secondary reservoir (12) for storing compressed air which passes through the air dryer (14), with the air dryer (14) and the secondary reservoir (12) being securely attached to a housing (16) to form an air dryer reservoir module (10). A primary reservoir (18) for storing compressed air from the air dryer (14) is located remote from the air dryer reservoir module (10). Components located within the housing (16) control air flow between the air dryer (14) and the primary and secondary reservoirs (18,12) and also monitor the pneumatic brake system circuits fed by the primary and secondary reservoirs (18,12). In the event of a failure of either of the pneumatic brake system circuits speed of the vehicle is limited.

Abstract: An adsorbent material containing package is provided for use within the sealed canister of a liquid accumulator for an air conditioning system of the kind in which the suction tube within the canister has spaced upwardly extending legs connected by a bottom bite and in which the bleed opening in the bite is formed as a downwardly extending nipple. The adsorbent material package is formed with substantially identical first and second pouches formed of tubular porous polyester felt material with sealed upper and lower ends containing a quantity of adsorbent material. The pouches making up the package are joined to each other at upper flanges with the junction being located along an extension of a median line through the pouches and leaving the ends of the flanges free of attachment. The transverse width of the pouch flanges exceeds the spacing of the suction tube legs so that the flange end portions are splayed to receive one of the legs therebetween thereby locating the package in relation to the suction tube.

Abstract: A docking station with a filter that sits inline in a process gas channel and that alternatively receives a loopback plate, a sensor plate and a removable purifier cartridge for particle removal as well as the removal of trace amounts of moisture, oxygen, and other chemical impurities from a gas stream. The removable purifier cartridge comprises a purifying medium with a pair of sealing poppet valves that automatically close when the cartridge is removed from the docking station. A block body is included in the docking station with gas line fittings for close gland-to-gland separations, while the purifier cartridge is off to one side, and not positioned directly in line between the glands.

Abstract: A maintenance free dehydrating breather apparatus for equipment such as oil cooled transformers and the like includes a cap and vessel enclosing a container for desiccant. A heater is mounted within the container in contact with the desiccant. The apparatus is connected through the cap to the equipment being supplied with dehydrated air. When the equipment requires dehydrated air, it draws air in through a vent valve in the vessel and thence through walls of the container and the desiccant. When the equipment expels air, the air is passed out through the vent valve, which otherwise normally seals off the interior of the vessel from the moisture in outside air. At selected intervals, for a selected period of time, a heater within the container is supplied with electrical power to heat the desiccant to drive off the moisture therefrom, which condenses on the walls of the vessel and flows to the bottom of the vessel where it is discharged through the vent valve.

Abstract: A compact canister assembly for containing a filter media. The assembly includes an outer metal container, an inner structure of filter media and an inner metal container for insertion into an open end of the outer metal container and over the inner structure of the filter media. The inner metal container has an end exposed at the open end of the outer metal container and an end structure closing the end of the outer metal container opposite the end receiving the inner metal container. An end structure is also provide for closing the exposed end of the inner container. The end structures include at least one layer of an air permeable material that permits air flow through said layer and through the inner structure of filter media while retaining the filter media within the canister assembly. The inner structure of filter media is longer than the combined length of the metal containers when they are telescoped together to compact the filter media within the telescoped containers.

Abstract: An end cap assembly for a filter canister includes outer and inner metal caps each having an opening therein for general axial alignment with each other when secured to the ends of the canister. An inner metal plate or layer made of a wire mesh material and a second inner plate or layer of an air permeable cloth material is provided such that the inner plates or layers are disposed between the outer and inner metal caps and secured together to form a unitary end cap assembly.

Abstract: A fluid storage and dispensing system including a fluid storage and dispensing vessel containing a physical adsorbent material having sorptive affinity for the fluid to be stored in the vessel and subsequently dispensed from the vessel through a valve head assembly. The character of the fluid stored in the vessel, such as its pressure and/or temperature, is non-invasively monitored during the storage (non-dispensing) mode of the system, by a sensing element in the valve head assembly operative coupled with an output device such as a visual output display or a set point-limited alarm.

Abstract: A desiccant canister for an air braking system having dual internal air flow paths and means for avoiding localized compression of the molecular desiccant sieve. The present invention provides a spin-on canister having an inner shell spring-loaded into an outer shell. The inner shell contains the molecular desiccant sieve. To increase the internal flowpath without increasing the outer size of the canister, a baffle plate is provided within the inner shell to divide the molecular sieve into an outer annular chamber and inner core of roughly equivalent flow dimension. The air to be dried therefore is able to make one pass through one flow path and then another pass through another flow path. To avoid localized compression of the molecular sieve, the inner shell is spring loaded into the outer shell and cooperates with a sliding baffle plate to effect equilibrium.

Abstract: A canister structure for absorbing fuel vapor in the fuel tank and supplying the fuel vapor into the engine together with purge air is provided. The canister structure includes a canister body filled up with absorbents for absorbing the fuel vapor, a purge pipe connected to the canister body for introducing the purge air into the canister body and a separator for removing moisture contained in the purge air. To the separator, the purge pipe is connected downwardly. The separator is provided on the bottom side with an air inlet of which diameter is larger than that of the purge pipe. With the above-mentioned arrangement, since the separator is so formed as to have a diameter larger than that of the purge pipe, it is possible to reduce a flowing speed of the purge air by means of the separator, so that moisture contained in the purge air can be trapped and eliminated by the separator certainly.

Abstract: An adsorbent material containing package is provided for use within the sealed canister of a liquid accumulator for an air conditioning system of the kind in which the suction tube within the canister has spaced upwardly extending legs connected by a bottom bite and in which the bleed opening in the bite is formed as a downwardly extending nipple. The adsorbent material package is formed with substantially identical first and second pouches formed of tubular porous polyester felt material with sealed upper and lower ends containing a quantity of adsorbent material. The pouches making up the package are joined to each other at upper flanges with the junction being located along an extension of a median line through the pouches and leaving the ends of the flanges free of attachment. The transverse width of the pouch flanges exceeds the spacing of the suction tube legs so that the flange end portions are splayed to receive one of the legs therebetween thereby locating the package in relation to the suction tube.

Abstract: A container for carbon molecular-sieve material which is designed to prevent contamination of carbon materials within the container. The container includes a hollow section with a preferably circular internal cross-section and a rectangular or square external cross-section. Attached to each end of the hollow section are screened structures designed to retain the molecular-sieve material within the hollow section. These screened structures are preferably secured in place by clamping rings. The hollow section can be hermetically sealed for transport and can be sealed by cover plates and bolts.

Abstract: A preformed desiccant bag for use with a retaining clip including a preformed porous casing including a first preformed bulbous end portion of a first girth, a second preformed bulbous end portion of a second girth, a central preformed waist portion of a third girth located between the first and second preformed bulbous end portions, with the third girth being smaller than either the first and second girths to thereby provide a pronounced position for reception of a retaining clip, and desiccant in the casing.

Abstract: A cup like, rigid desiccant container and methods for co-molding the container to associated accumulator tubing are disclosed. The container includes an elongated U-shaped slot bounded by upstanding wall surfaces of the housing. A first pair of opposed ridges formed on opposite ones of the walls is provided for snap fitting over an accumulator tube or tube segment. A pair of opposing protuberances is provided on opposite wall surfaces near the circumferential border of the container to provide a second grasping location to snap or friction fit over a second tube or tube segment.

Abstract: An air filtration and purification system for the interior of a closed vehicle, including an outside air intake and an inside air intake, both the intakes empty into a common plenum located interior of the vehicle, an air passageway defined by an inlet, in fluid communication with the plenum, and an outlet spaced-apart therefrom for removing the air in the plenum, a plurality of purifying air filters arranged in series in the passageway, a first air movement device interposed the plenum and said passageway inlet to create a flow of air from the plenum to the filters, a second air movement device in the outlet of the passageway to draw said flow of air across the filters, and a vent device in fluid communication with the second air movement device for distributing the filtered air from the second air movement device into the vehicle.

Abstract: A saddle type adsorbent unit including first and second porous fabric adsorbent containers, a connecting member connecting the first and second containers and for placement between the upstanding pipe portions of a U-shaped pipe of a receiver, tabs on the outer ends of the adsorbent containers having apertures therein for receiving a filter housing on the underside of a return bend of the U-shaped pipe to thereby fixedly mount the saddle type adsorbent unit onto the U-shaped pipe.

Abstract: A drying cartridge for air drying systems, especially for compressed-air brake systems of vehicles, has an inner pot and an outer pot. The components used for the air drying, including a pressure spring used for compressing the drying agent, are arranged inside the inner pot constructed as a preassembled unit, in which case the inner pot can be inserted flush into the outer pot. By usage of an interior-cylindrical wall, the inner pot surrounds a duct which penetrates the drying cartridge in the axial center, through which duct a screw is guided for fastening the drying cartridge on the dryer casing.

Abstract: A casing assembly of a desiccant housing houses desiccant in an air dryer system. The casing assembly includes a casing portion, a retainer, two porous plates, and a mechanism for compacting the desiccant. The casing portion defines a channel between two sleeves that channels moisture-bearing air from an inlet of a head end out a tail end of the casing portion. An inner sleeve defines a flow chamber between the ends. The head end features an inner seat face that seals against an inner sealing flange of a main portion of the housing. The head end features an outer seat face that connects to an outer sealing flange of the main portion. The inlet communicates with a supply port of the main portion from which the moisture-bearing air is received during a drying mode of operation of the system. An outlet of the head end communicates with a delivery port of the main portion out of which dried air is directed during the drying mode. The retainer affixes to the inner sleeve within the flow chamber at the head end.

Abstract: In a drying cartridge for air drying installations, especially for vehicle air-brake systems, an air drying agent is contained inside an outer pot, the base region of which can be closed off by a face cover. A central screw with a thread at its end passing through the face cover and securable to the dryer casing extends axially and centrally through the drying cartridge. The face cover, which may be made of thin plastic, can move to a limited extent in relation to the outer pot of the drying cartridge and is secured by clamping or friction to an O-ring which in turn is introduced into an annular groove in the central screw such that, after the drying cartridge has been released from the dryer casing, the cartridge can still be handled as a structural unit.

Abstract: An evaporative emission control system for an automotive vehicle includes a generally cylindrical casing having an adsorption zone containing hydrocarbon adsorbing agent, an antechamber extending within the casing to the adsorption zone, and a swirl inducing inlet passage for conduction of hydrocarbon laden air into the antechamber such that a rotational flow pattern will be established in the antechamber, with the rotational flow having an axis coincident with a longitudinal axis of the generally cylindrical casing.

Abstract: A desiccant cartridge including a molded plastic shell having an outer cylindrical portion and an inner tubular portion connected by a plurality of ribs which extend therebetween, a molded plastic end cover grid secured in each of the opposite ends of the molded plastic shell and being attached to both the outer cylindrical portion and the inner tubular portion, annular porous felt members secured to the inner sides of the molded plastic end cover grids, and desiccant in the annular space between the outer cylindrical portion of the shell and the inner tubular portion thereof.

Abstract: A process system with an integrated gas storage and delivery unit comprising an adsorption-desorption apparatus, for storage and dispensing of a gas wherein the gas is dispensed by pressure differential desorption of the sorbate gas from the sorbent material. A motive fluid driver, e.g., a pump, blower, compressor, eductor, or the like, is arranged for flowing the dispensed gas to a gas-utilizing unit, such as an ion-implant unit, wastewater treatment unit, gas-liquid contacting chamber, chemical vapor deposition reactor, gas laser assembly, etc.

Abstract: An adsorption-desorption apparatus, for storage and dispensing of a sorbable gas, wherein a physical sorbent medium bearing the adsorbed gas to be selectively dispensed is delivered by pressure differential desorption and/or thermal desorption of the sorbate gas from the sorbent material. The sorbent material preferably comprises a material which is characterized by a Sorbent Working Capacity, measured for arsine at 40 Torr and at 650 Torr, of at least 50 grams arsine per liter of bed of the sorbent material.

Abstract: A preformed desiccant bag for use with a retaining clip including a preformed porous casing including a first preformed bulbous end portion of a first girth and width, a second preformed bulbous end portion of a second girth and width, a central preformed waist portion of a third girth and width located between the first and second preformed bulbous end portions, with the third girth and width being smaller than either the first and second girths and the first and second widths to thereby provide a pronounced position for reception of a retaining clip, and desiccant in the casing.

Abstract: A fluid-collecting device for collecting fluid from a fuel tank having an opening leading to the inside thereof including an elongated bag which is of a size which can pass through the opening, desiccant material in the bag, an elongated cord sewn to the top of the bag, and a disc to which the outer end of the cord is attached, the disc being of a larger size than the opening so that it cannot enter the opening, to thereby provide access to the outer end of the cord which can be grasped to withdraw the bag of desiccant material from the tank.

Abstract: A moisture absorbing device includes a tube which is made of board coated with plastic and which in its longitudinal direction is divided into an upper chamber containing a moisture-absorbing agent and a lower chamber containing a liquid-collecting member and communicating with the upper chamber via a liquid-permeable member. The tube has at least one opening on a level with the upper chamber. A netting element, which has at least one fine-meshed netting portion, is so attached to the inside of the tube that the netting portion is located in front of the opening. The liquid-collecting member includes a liquid-tight container connected to the liquid-permeable member.

Abstract: A canister in which a supplying conduit is disposed at a position to penetrate through layers of an absorbent, includes a casing made of resin which includes a peripheral wall and a bottom integrally formed on the lower surface of the peripheral wall, and is opened at the top, a conduit support portion formed on the inner surface of the bottom, the supplying conduit secured in the conduit support portion and extended upright, and a top cover made of resin which is welded on an upper end portion of the casing. A purge port is attached to the top cover and has a recess into which the supplying conduit is inserted. The supplying conduit is dimensioned so that it creates a circumferential gap between the recess and the upper portion of the supplying conduit.

Abstract: A fuel vapor treatment device or canister for a vehicle evaporative emission control system has a casing filled with a fuel vapor absorbent material in its chamber. A relay pipe projects outwardly from one end the casing and communicates with the chamber. A liquid-fuel separator having a cavity is sealingly mounted to the one end of the casing so that the relay pipe extends into the cavity. Inlet and outlet pipes, which communicate with the cavity and fuel vapor, are formed in the separator. A fuel vapor outflow passage is formed inside the separator and communicates with the outlet pipe. The suction pipe has a reduced size section with an orifice. A liquid-fuel suction pipe, which communicates with the outflow passage through the orifice, extends perpendicularly downwardly from the outflow passage. The suction pipe extends from the orifice to the area where the liquid-fuel collects.

Abstract: A saddle type adsorbent unit including first and second porous fabric adsorbent containers, a connecting member connecting the first and second containers and for placement between the upstanding pipe portions of a U-shaped pipe of a receiver, tabs on the outer ends of the adsorbent containers having apertures therein for receiving a filter housing on the underside of a return bend of the U-shaped pipe to thereby fixedly mount the saddle type adsorbent unit onto the U-shaped pipe.

Abstract: The present invention is an improved catalytic filter material for use in removing contaminants such as NO.sub.x from a fluid stream. The filter of the present invention employs composite fibers of expanded polytetrafluoroethylene (PTFE) filled with catalytic particles. The composite fibers are chopped into staple fibers and made into a felt material. Preferably, the felt material is then laminated on at least one side with a protective microporous membrane. The combined filter removes both macro-particles, such as dust, from the filter stream before the dust can clog active catalytic sites and effectively catalytically coverts undesirable contaminants in the fluid stream to acceptable end products.

Abstract: A method for producing an activated carbon which comprises burning waste tires containing metal cord at 700.degree.-800.degree. C. in the presence of oxygen and in the presence of CO.sub.2 and water vapor and at a relative humidity of at least 60%, and recovering the activated carbon, wherein the activated carbon comprises carbon microcrystals irregularly arranged and difficulty graphitizable carbon, the difficulty graphitizable carbon comprising crosslinking lattices in the gaps among carbon microcrystals and the activated carbon having pencil hardness of from B to 6B, pore size of 100-400 .ANG., specific surface area of 150-500 m.sup.2 /g, pore volume of 1.3-5.0 ml/g and CEC of 8-13.

Abstract: A desiccant type air dryer assembly having an integral purge volume with a body assembly and a removable desiccant cartridge. A retention bolt is provided in the body assembly which serves the two-fold function of retaining the cartridge and body assembly in an assembled condition as well as providing a flow passageway for air moving through the air dryer.

Abstract: A fuel vapor treatment device adapted to prevent evaporative emission from an automotive vehicle has a casing formed of a plastic and defines therein a space filled with a fuel vapor absorbent. An end wall is sealingly connected to a first end of the casing and provided with a first pipe through which fuel vapor is charged to the space, and a second pipe through which the fuel vapor within the space is purged. A cover plate is sealingly connected to a second end of the casing. A partition member is integral with the casing and disposed within the space of the casing to define first and second chambers. The partition member includes first and second partition walls that are parallel with each other and form a predetermined space therebetween. The partition member further includes a first lateral wall to connect first ends of the respective first and second partition walls, and a second lateral wall to connect second ends of the respective first and second partition walls.

Abstract: A desiccant type air dryer for an air supply system for a motor vehicle brake system. The air dryer incorporates features for convenient mounting and dismounting of a desiccant cartridge to the air dryer body assembly. This connection is achieved through the use of an externally accessible through bolt which passes through the body assembly and engages a central threaded boss on the load plate of the desiccant cartridge. Interlocking engagement between the desiccant cartridge and body assembly prevent these parts from rotating relative to one another during mounting and dismounting of the cartridge. The desiccant cartridge is readily removed through engaging the through bolt driving head using conventional tools.

Abstract: An adsorbent assembly is provided for removing gaseous contaminants from an enclosure having an adhesive layer, an adsorbent layer and a filtering layer. An exterior mounted assembly is also provided having an outer layer containing a metal or metallized material that provides an electromagnetic shield to the enclosure.

Abstract: The air purifier is used in a forced air heating and cooling system. It includes a cabinet assembly having therein a removable adsorber media carrier assembly. The carrier assembly includes a plurality of removable and refillable adsorber tubes provided with pelletized activated carbon or other adsorption media. The adsorber tubes are made from wire mesh and are arranged in rows with the air flowing through the cabinet assembly striking and impinging on the adsorber tubes in order to purify the air.

Abstract: A container for particulate desiccant comprises a cup and a cap. The cup includes spaced inner and outer wall portions connected by a transverse web portion to define a chamber having an opening for receiving the desiccant. The cap is designed for receipt in the chamber to cover the opening. In addition, the cap has a hole for receiving the inner wall portion of the cup. The inner wall portion includes a stepped inner surface defining an intermediate flange for preventing a canister pipe from passing completely through the inner wall portion. The inner wall portion also includes a beveled inner end surface which tapers radially inwardly in a direction toward the transverse web portion to facilitate insertion of the canister pipe into the inner wall portion. An inner wall extension portion is coaxially joined with the inner wall portion at a web side of the cup to facilitate return of dehydrated air or fluid to an air conditioning system.

Abstract: Fuel vapors leaving the fuel tank of a motor vehicle are recovered with a filter cartridge inserted between the tank and the intake manifold of the engine. An atmospheric connection duct of the cartridge can be selectively connected to the intake partial vacuum with a pneumatic distributor. The leaktightness of the device is thereby tested.

Abstract: A fuel vapor capturing canister includes a casing formed into the shape of a cylinder and accommodating an adsorbent material. A partition member divides the activated carbon into lower and upper layers. The partition member includes a cross rib and upper and lower walls sandwiching the rib. One of four pieces of the cross rib is connected to the inner peripheral wall of the partition member. Two chambers located at both sides of the piece connected to the inner peripheral wall of the partition member communicate with each other through a communicating path defined between the other pieces of the rib and the inner peripheral wall of the partition member. One of the two chambers has in its underside openings communicating with the lower activated carbon layer while the other chamber has in its top openings communicating with the upper activated carbon layer. The fuel vapor flows between the two layers of activated carbon.

Abstract: A fuel vapor capturing canister includes a casing formed into the shape of a cylinder and accommodating an adsorbent material and a plurality of partition plates each formed of an impermeable material. The adsorbent material accommodated in the casing has one of two faces communicating with the atmosphere and the other face communicating both with a fuel storage system and an intake system of an engine. The partition plates are disposed in the casing so as to divide the adsorbent material into a plurality of layers. The partition plates has respective communicating holes formed so as not to lie one above another. This arrangement of the partition plates lengthens a path of fuel vapor passing through the activated carbon layers. Since the distance of flow of the fuel vapor in contact with the adsorbent material is thus increased, the fuel component adsorbing efficiency can be improved.

Abstract: 16-membered macrolide derivatives represented by the formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a COR.sup.6 group, wherein R.sup.6 represents a straight-chain alkyl group having 1 to 3 carbon atoms; R.sup.2 represents a hydrogen atom or a COR.sup.6 group, wherein R.sup.6 is as defined above; R.sup.3 represents a hydrogen atom or a COR.sup.6 group, wherein R.sup.6 is as defined above; R.sup.4 represents a straight-chain alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted allyl group; and R.sup.5 represents a substituted or unsubstituted, straight-chain or branched alkyl, alkenyl or aralkyl group having 1 to 10 carbon atoms;and pharmaceutically acceptable salts thereof are disclosed. These compounds show excellent and long-acting antimicrobial activities. A novel process for producing these 16-membered macrolide derivatives is further disclosed.

Abstract: A manufacture and method by which particulate in the polluted ambient air is collected and retained, thereby purifying the ambient air. The manufacture is mounted amid a vehicle (17, 38, etc.) at a location always accessible to the ambient air in the atmosphere. Relative motion between vehicle and the polluted ambient air (37, 65) provides confrontation of the polluted air with a confronting receptacle (14) in which loosely gathered together pellets (13) are gathered together. Receptacle (14) comprises wire mesh (15) having interstices (31) smaller than the size of the pellets (13). As relative motion occurs between vehicle (17) and polluted air (37, 65), receptacle (14) confronts the polluted air, its pellets (13) entrapping particulate in the polluted ambient air, thereby purifying the ambient air and thereafter it being directly returned to the ambient air in the atmosphere. Alternative embodiments (43, 55) provide cages (26) into which receptacles (14) with their pellets (13) are put.

Abstract: An activated carbon filter is provided for venting a fuel tank. The activated carbon filter consists of a housing which accommodates activated carbon packets. Via lines, the housing is connected, on the one hand, by way of a first connection with the fuel tank, and on the other hand, by way of a second connection with the intake pipe, particularly that of a combustion engine. A third connection connects the housing with the atmosphere. The housing has a first partition which extends between the connection for the atmosphere and the connection for the tank. At least one other partition is provided which forms at least one other chamber. Each of the chambers is filled with activated carbon.

Abstract: A compact sorbent filter for selectively sorbing contaminants and method of removing contamination from an enclosure with a filter is disclosed. The filter comprises a sorbent core including contaminant adsorbing material therein, an outer protective cover wrapped around the inner sorbent core so as to completely contain the sorbent core, with the exposed end(s) of the core being capped so as to encapsulate the sorbent core present within the filter while not limiting the amount of material contained therein. A sorbing filter is placed within an enclosure to remove gaseous contamination therein. The filter is particularly suitable for use in a computer disk drive or similar enclosure where out-gassing contamination may be a problem.

Abstract: An ostomy filter for colostomy and ileostomy bags is gas-permeable to allow venting, and liquid-impermeable to prevent leakage. It includes a hydrogen sulphide adsorbent to remove smells. The filter comprises 9 to 50% by weight of particles of unsintered granular polytetrafluoroethylene (PTFE), 30 to 82% by weight of particles of comminuted sintered expanded porous PTFE, and 9 to 30% by weight of particulate water-insoluble H.sub.2 S adsorbent. The particles are fused together by baking at elevated temperature to form a gas-permeable liquid-impermeable network. The comminuted sintered expanded porous PTFE is preferably formed by comminuting uniaxially expanded PTFE fibre.

Abstract: An apparatus for containing and scrubbing toxic or corrosive gases from a leaking pipe or cylinder is provided. A gas passageway attaches at one end to a leakage location on a pipe or cylinder, and at the other end to an air operated exhauster. The air operated exhauster, through the input of a non-flammable purge gas, creates an exhaust flow from the leakage location to a drum which is attached to the air operated exhauster. The drum contains a scrubbing media which, when it contacts the leaked gas, cleans or removes the harmful component, thus allowing release to the atmosphere of the cleaned air.

Abstract: A carbon-filled fuel vapor filter system, including a polymer housing, the polymer housing including a hose inlet, a hose outlet, and a formed block of carbon pellets or granules with a polymer binding between the carbon pellets or granules contained within the fuel filter housing.

Abstract: An air filter for use in filtering air entering an operator's cab of a human-operated machine. A fine mesh screen and air permeable fibrous cover are added to the air outlet side of a conventional air filter. An accordion-shaped filter element of the conventional filter is located upstream of the fine mesh screen. Granular filter material such as activated charcoal fills the space between the accordion-shaped filter element and the fibrous cover. An air-impermeable strip may be added at the top portion of the fine-mesh screen across the full width of the air filter to prevent air from flowing through a void in the granular filter material which may develop over time due to settling.

Abstract: A modular air cleaning system having at least one filter module having a closed plenum box provided with male and female air flow porting structure, one of which porting structure provides an air inlet and the other of which provides an air outlet, each of the porting structures is in substantially cylindrical form and projects outwardly from the box and each has a section of substantially the same diameter lying adjacent the box, a shoulder on each of the sections peripherally circumscribing the same at a short distance outwardly from the box and adapted to engage end portions of a flexible hose for preventing its withdrawal from the sections, the male porting structure having a reduced diameter segment lying outwardly of the adjacent section and adapted to telescope within the female porting structure of another plenum box, and an annular seal within the female porting structure adapted to engage the segment and form a substantially gas-tight seal thereagainst.

Abstract: An apparatus for supplying high purity gas comprises a cylinder having a valve with two internal ports. One internal port is used to fill the cylinder while the other is fitted with a unit which removes particulates and impurities from the gas as it leaves the cylinder. The unit comprises an inlet, a first filter for removing coarse particulates, layers of adsorbent and absorbent for removing impurities, and a second filter for removing fine particulates. The purified gas leaves the cylinder via the valve and after passing through a regulator, a flow control device and various lengths of tubing passes through a conventional purifier immediately upstream of the point of use. The apparatus reduces the load on the purifier and hence decreases the frequency at which the purifier has to be recharged. Potentially the apparatus could obviate the need for the purifier altogether.