Abstract: In a device for filtering the intake air of internal combustion engines, including a tubular housing (2) with one filtering cartridge (3) fixed at an end by means of support means (4) provided with an inlet opening (5) and fit to support the housing (2) in correspondence of a lower opening (9) thereof, the filtering cartridge (3) is fixed to the support means (4), near the edges of the opening (5) so forming a single body, and is internally provide with air deflectors (6) fixed at the free end of the filtering cartridge (3) in such a way that the air flow coming from the opening (5) is forced by the air deflectors (6) to pass through the filtering cartridge (3) and comes out from the device (1) through an outflow opening (7), passing through the space between the filtering cartridge (3) and the external housing (2).

Abstract: A storage and retrieval system is provided for safely and efficiently storing reticles in a clean environment. An enclosed storage unit is provided for storing the reticles, and other items such as wafers and the like, in an environment which minimizes the amount of contaminants and is suitable for use in a semiconductor fabrication clean room. A retrieval unit is provided separate from the enclosed storage unit for accessing and staging the reticles before they enter and leave the storage unit for minimizing exposure of the storage unit. The storage unit includes a movable storage matrix having a plurality of bays for storing the reticles. The movable storage matrix is selectively moved or rotated by a drive mechanism that is located external to the storage unit so that the storage unit is substantially free of contaminant generating components.

Abstract: An air cleaner includes a fan unit (1; 1′) and a filter unit (3) that is entirely replaceable, where the fan unit (1; 1′) and the filter unit (3) are mutually connected by a quick coupling and the filter unit includes a filter and an exterior casing that defines an exterior of the air cleaner when the air cleaner is in an operating position.

Abstract: A reverse flow air filter arrangement is provided. The arrangement includes a filter element having first and second end caps, the second end cap having a central drainage aperture. A funnel shape on an interior surface of second end cap is used to direct moisture flow to the drainage aperture. The arrangement includes a housing in which the filter element is positioned, operatively, during use. Certain features in the housing facilitate moisture withdrawal from the filter element while also inhibiting interference with sealing between the filter element and the housing.

Abstract: A filter assembly for collecting material that is entrained in a gas stream comprises a housing for a tubular filter element arranged for the gas stream to flow through its wall, having inlet and outlet ports for the gas that is to be filtered. The housing comprises an end cap and a body section in which the filter element is located when the assembly is in use, with at least one of the ports for gas to be filtered being provided in the end cap. The assembly includes a flow conduit device which can be located within the end cap when the assembly is in use, in which a first conduit opening is arranged for communication with the port in the end cap and a second conduit opening is arranged for communication with the filter element located in the housing body section. The flow circuit presents a continuous smooth flow path to gas flowing along it between the first and second conduit openings.

Abstract: A reverse flow air filter arrangement is provided. The arrangement includes a filter element having first and second end caps, the second end cap having a central drainage aperture. A funnel shape on an interior surface of second end cap is used to direct moisture flow to the drainage aperture. The arrangement includes a housing in which the filter element is positioned, operatively, during use. Certain features in the housing facilitate moisture withdrawal from the filter element while also inhibiting interference with sealing between the a filter element and the housing.

Abstract: A reverse flow air filter arrangement is provided. The arrangement includes a filter element having first and second end caps, the second end cap having a central drainage aperture. A funnel shape on an interior surface of second end cap is used to direct moisture flow to the drainage aperture. The arrangement includes a housing in which the filter element is positioned, operatively, during use. Certain features in the housing facilitate moisture withdrawal from the filter element while also inhibiting interference with sealing between the filter element and the housing.

Abstract: A reverse flow air filter arrangement is provided. The arrangement includes a filter element having first and second end caps, the second end cap having a central drainage aperture. A funnel shape on an interior surface of second end cap is used to direct moisture flow to the drainage aperture. The arrangement includes a housing in which the filter element is positioned, operatively, during use. Certain features in the housing facilitate moisture withdrawal from the filter element while also inhibiting interference with sealing between the filter element and the housing.

Abstract: An air filter for vehicles which includes a main body defining a chamber, a discharge outlet communicating with said chamber for discharging clean air therefrom, a disc-type baffle positioned to divide the chamber and the discharge outlet into two filtering zones, supporting and positioning plates spring-mounted to opposite sides of the disc-type baffle, said supporting and positioning plates having a smaller dimension than the chamber, an air inlet which branches into separate guide tubes which communicate with the two filtering zones of the chamber and filter elements mounted on each of said supporting and partitioning plates and spaced apart from the walls of the chamber within the filtering zones, said filter means defining an open center core for receiving air from said guide tubes.

Abstract: A reverse flow air filter arrangement is provided. The arrangement includes a filter element having first and second end caps, the second end cap having a central drainage aperture. A funnel shape on an interior surface of second end cap is used to direct moisture flow to the drainage aperture. The arrangement includes a housing in which the filter element is positioned, operatively, during use. Certain features in the housing facilitate moisture withdrawal from the filter element while also inhibiting interference with sealing between the filter element and the housing.

Abstract: A filter chamber (8) for the vacuum system of a textile machine (1) comprises connection conduits (14, 15) between a vacuum source (7) and a suction conduit (9) running the length of the machine. A filter 10 is arranged inside the filter chamber (8) at an interval from the wall (13) of the filter chamber to divide the filter chamber (8) into a dirty-air area (18) and a clean-air area (17). The filter element (10) comprises at least two filter elements, a relief element (11) and a collector element (12). The relief element (11) is disposed in the filter chamber (8) at a spacing from the wall (13) of the filter chamber such that a primary component of the flow (16) of suction air from the conduit (14) to the conduit (15) for the vacuum source (7) moves parallel to or at an acute angle (I) to the relief element (11).

Abstract: A vacuum cleaner having a dual filter assembly includes a filter cage, a primary filter disposed on the filter cage, and a secondary filter disposed downstream of the primary filter. A float valve between the primary filter and the secondary filter inhibits liquid from coming into contact with the secondary filter.

Abstract: A dual filter assembly for a vacuum cleaner includes an annular inner filter mountable on a filter cage of the vacuum cleaner. The inner filter has a lower end and a retaining ring is attached to the lower end. An annular outer filter is removably mounted surrounding the inner filter, with a lower end of the outer filter supported by the retaining ring.

Abstract: An air cleaner arrangement useful for cleaning air in ablative thermal imaging processes includes a housing and a removable and replaceable element assembly. The housing has an interior, an inlet conduit, and an outlet conduit. The element assembly includes first and second filter elements axially aligned and secured together in a stack configuration. The first filter element has a media pack for filtering particulate material. The second filter element has a media pack for filtering noxious gases, such as formaldehyde. In operation, a blower assembly directs airflow through the inlet conduit, into the first element interior, through the first element media pack, through the second element media pack, into the second element interior, and out through the housing outlet conduit. Methods for filtering and changing out of the element assembly are also described herein.

Abstract: A reverse flow air filter arrangement is provided. The arrangement includes a filter element having first and second end caps, the second end cap having a central drainage aperture. A funnel shape on an interior surface of second end cap is used to direct moisture flow to the drainage aperture. The arrangement includes a housing in which the filter element is positioned, operatively, during use. Certain features in the housing facilitate moisture withdrawal from the filter element while also inhibiting interference with sealing between the filter element and the housing.

Abstract: A filter retainer for a vacuum cleaner includes a filter cage having several ribs. At the bottom of the filter cage is a lip which includes a plurality of notches. A cylindrical filter having open ends is slid over the filter cage. A cap is placed at the bottom of the filter in order to hold the filter to the filter cage. The cap has a pair of ramps which engage notches on the rim of the filter cage. As the cap is rotated, the cap is pushed towards the filter so that a lip on the cap engages a bottom of the filter.

Abstract: A reverse flow air filter arrangement is provided. The arrangement includes a filter element having first and second end caps, the second end cap having a central drainage aperture. A funnel shape on an interior surface of second end cap is used to direct moisture flow to the drainage aperture. The arrangement includes a housing in which the filter element is positioned, operatively, during use. Certain features in the housing facilitate moisture withdrawal from the filter element while also inhibiting interference with sealing between the filter element and the housing.

Abstract: A vacuum filter vessel having a base and a source of vacuum. There is an inlet for dust laden air and a mainly imperforate container to receive dust. The inlet and the source of vacuum communicate with each other by a passageway extending around the container to communicate the top of the container and the vacuum source. There is a perforate filter member at the top of the mainly imperforate container to filter dust from the dust laden air.

Abstract: Enclosure for separating a component from a gas mixture by adsorption, of the elongated structure type including at least one granular adsorbing product and having a device for introducing and withdrawing gas to ensure a gas circulation in longitudinal direction relative to the enclosure of the elongated structure type. The enclosure is a gas bottle with closed bottom and a cylindrical lateral wall narrowing into a neck provided with an introduction-withdrawing head having a first axial duct extending into a dipping tube reaching at a short distance from the bottle bottom and a second duct opening inside the bottle at the level of the bottle neck. Use for the separation of gas mixtures, such as for the production of hydrogen.

Abstract: A shop type vacuum cleaner including an externally mounted filter including a filter housing including a filter element and an elongated inlet tube slidably received within an exhaust outlet opening from the vacuum cleaner debris compartment.

Abstract: A vacuum filter vessel having a base and a source of vacuum. There is an inlet for dust laden air and a mainly imperforate container to receive dust. The inlet and the source of vacuum communicate with each other by a passageway extending around the container to communicate the top of the container and the vacuum source. There is a perforate filter member at the top of the mainly imperforate container to filter dust from the dust laden air.

Abstract: A granular media filter has an underdrain system for use in a granular media filter comprising perforated lateral conduits arranged for the distribution of air and water for scouring and backwashing of the filter. Each conduit is in the form of a single linear conduit containing two or more separate axially parallel ducts, each duct having an external wall in common with the conduit, which wall is provided with axially spaced apertures for emission of water or air, there being no intercommunication between the ducts. The underdrain system itself also forms a feature of the invention.

Abstract: A modular manifold arrangement for distributing a flow of a gas in a reactor. The manifold arrangement includes a tank or a container, within the walls of which a bed for a granulated catalyst or substance, with which the gas is to react, is arranged. The bed is at least partially surrounded by gas-permeable gratings. In order to provide elements that may pass through a narrow manhole and from which it is possible to construct passages for providing a uniform flow through the reactor bed, the manifold arrangement includes an elongate tube. The tube is closed at one end and open for inlet of gas at the other end. The tube further has a gas-impermeable rear sidewall with a shape corresponding to the walls of the tank and a front side which is a gas-permeable grating having a sheet or plate provided therein with a large number of nozzles.

Abstract: The invention relates to an apparatus for separating contaminants comprising a tubular filter body (12) having an inner flow space (18) which is separated by a filter layer (14) from an outer flow space (20). The one end face of the filter body (12) is closed and the other end face comprises an opening. The inner flow space (18) has a substantially uniform cross-section over its entire axial length and is in flow communication on the one hand through the filter layer (14) with the outer flow space (20) and on the other hand through the end-face opening with an outside space. In the inner flow space (18) an element (30) is arranged for conducting the flow through the filter layer (14), which is characterized in that said element (30) for conducting the flow from or to the filter layer (14) is gradually tapered in its cross-section from the sealed end face (16) to the end-side opening (22) of the inner flow space (18).

Abstract: Methods and apparatus for removing a pollutant from a fluid stream. A nested array of fibers (1) is provided in a substantially confined region (2). The pollutant-containing fluid stream (4) is passed through a substantial portion of the nested array (1) from an inlet area (7) therein to a fluid-outlet area (8) that is spaced apart substantially from the inlet area (7). A substantial fraction of the pollutant (9) is separated from the fluid stream (4) in a portion of the nested array (1) generally nearer to the inlet area (7) than to the fluid-outlet area (8), and a substantial fraction of the separated pollutant (9) is removed from the nested array (1) at a pollutant-outlet area (12) that is spaced apart from the inlet area (7) and from the fluid-outlet area (8), while the fluid stream (4) may continue to pass through the nested array (1).

Abstract: A particulate filter for exhaust gases is disclosed which includes two filter members of suitable porous, heat-resistant material, longitudinally spaced to provide a dead space between the two filter members. The filter members are disposed within a housing in spaced relationship to the outer wall of the housing to provide an annular passage between the filter members and the outer wall of the housing for flow of exhaust gases therethrough. Provision is made for delivering exhaust gases to the dead space and then causing the exhaust gases to flow from the dead space through two paths to the outlet of the particulate filter. One of these paths provides for flow directly through one of the filter members to the outlet. The other path provides for flow of exhaust gases through the other of the filter members to the annular space and then along the annular passage external of the filter members to the outlet.

Abstract: A fuel evaporation preventing device has a casing, an absorbent filling the casing and adapted to absorb the fuel vapor, a fuel vapor introduction pipe having one end embedded in the layer of the absorbent, and a flow deflector opening towards the fuel vapor introduction pipe. The flow deflector has a plurality of box-shaped pleats defining a plurality of slits extending vertically, so that the fuel vapor is distributed over wide area in the canister to permit greater part of the absorbent to take part in the absorption and release of the fuel vapor.

Abstract: A fluid-solids contacting apparatus which is useful in simultaneously contacting several different liquid streams with different parts of a fixed bed of solid material is disclosed. The apparatus comprises an imperforate centerpipe mounted in an outer vessel with discoid layers of fluid distributor pans being suspended from the centerpipe and the vessel. A fluid may be added or withdrawn at any layer through horizontal conduits leading to annular distribution rings mounted on the centerpipe, with smaller pipes branching radially from the distribution rings to the individual distributor pans. Each distributor pan comprises an upper and lower horizontal particle retaining screen and two flat flow diversion plates which force the fluid to flow to a central mixing area between the plates and at which the smaller pipe connects with the distributor pans. The distributor pans thereby serve to mix and redistribute fluids flowing vertically through the apparatus.

Abstract: A canister for a fuel evaporative emission control system of an engine; A mass of adsorbent contained in a canister casing is divided into at least two layers by a pair of spaced filter plates, so that the fuel vapors can be diffused into all parts of the adsorbent layers under the deflecting action of the filter plate and the uniforming action of a hollow space defined between the paired filter plates.

Abstract: A filter bed separator for separation of liquid or solid particulates from gas streams and/or for washing of accumulated solids from the filter bed. Each separator contains one or more cylindrical filter bed elements, each comprising a non-matting bed of filter material defining a hollow cylindrical filter bed element having a hollow core, with the filter bed terminating at the walls of a gas inlet duct. The gas inlet duct comprises one or more ducts disposed along at least a portion of the longitudinal length of the cylindrical element with the walls of the duct extending from outside the housing of the separator to the inner circumference of the filter bed.

Abstract: A fluid filter construction comprises a mass of filtering material, such as activated charcoal, in which fluid flow passage forming members are embedded. The filtering material itself serves as the means for sealing the filter against leakage of unfiltered fluid into or out of the filter and against bypassing from the inlet to the outlet side of the filter.