Abstract: An improved filter for pressurized painting equipment formed of a cylindrical filter element and carried in a cylindrical housing and base having an inlet and an outlet. The filter element has solid end caps and is made up of one or two layers of wire mesh and is supported by a helical spring interior of the wire mesh.

Abstract: A filter frame formed from a stock channel member having a generally U-shaped cross-sectional configuration. The channel member may be provided in stock lengths which may be cut on-site to the desired size to form each side of a filter frame when assembled together. The cut lengths of the channel members may be assembled together in the appropriate configuration to match the filter being replaced, and a mass of filter medium cut to a corresponding configuration and placed within the cavity formed by the u-shaped cross-section of the channel members to form the air filter. The channel members are also provided with a plurality of U-shaped grooves in the upstanding legs of the channel members which form tabs. The tabs may be advantageously employed with a length of elongated material to form a protective screen. Specifically, a length of elongated material, such as string, may be wound about the tabs and across the length of the air filter to be wound through separate tabs.

Abstract: A tubular membrane module for example for use in ultrafiltration has a tubular shell made of standard PVC pipe provided with moulded PVC end fittings that are secured to the pipe by epoxy resin adhesive. A membrane tube within the shell extends between the end fittings and is secured by a similar adhesive in respective sockets within the end fittings. Each socket has a blind end that receives the end portion of the membrane tube so that the tube is protected from shear effects due to fluid entering the tube under pressure in use.

Abstract: A filter sector for a filter disk of a rotating filter, including folded or currugated means having ridges and valleys extending in a longitudinal direction of said means to form filtrate channels, and a filtering medium covering said means. Said means includes at least two elements (9, 10), each having parallel riges (12, 11') and valleys (11, 12') and said at least two elements are located in an at least partly overlapping relationship, such that filtrate channels (13) of one element (9) intersect with filtrate channels (14) of the other element (10). Preferably, the filter sector includes two at least substantially equally shaped elements and said elements are disposed such that there is communication between filtrate channels (13, 14) of said elements (9, 10) in zones of said partly overlapping relationship.

Abstract: A module for crossflow filtration, a method of making same, and a filtration device that accommodates at least one such module, which includes at least two multilayer filter units which are stacked on top of one another and are separated from one another by a respective spacer, with the module having at least one channel for unfiltered material and at least one filtrate channel that connects the filter units. The module further comprises a sealing material ring for sealingly interconnecting peripheral portions of the filter units, with at least one edge section of the filter units being spaced from the sealing material ring to form the channels for unfiltered material. The layers of each individual filter unit are fused together at least at edge sections that are not embedded in the sealing material ring which, at edge sections of the filter units that are embedded therein, has a width that is sufficient to completely accommodate the filtrate channels.

Abstract: A filter cartridge comprising a pleated, cylindrical filter element is provided with an end densification ring to cause the ends of the pleats to pack together more tightly. In this configuration they can be more easily and securely sealed in an end cap closing off an end of the filter cartridge.

Abstract: A pour-through pitcher filter assembly includes a compact filter element including a thin annular disk of molded activated carbon and a peripheral annular seal element. The seal element allows the filter to be replaceably mounted in the lower end of a plastic reservoir, which reservoir is adapted to be supported in the top of a pitcher for receiving filtered water. The reservoir may be made by a blow molding process and includes an integral bellows member which is manually collapsible to pressurize the interior of the reservoir to initiate gravity flow through an initially dry filter element. The seal element utilizes a synthetic rubber material and is preferably insert molded around the carbon filter disk.

Abstract: The "PURIFIED COFFEE AND ICE WATER DISPENSER" replaces the standard kitchen sink taps. The tap water is directed to a flow director at the base of the spout which adjusts to allow the flow to either run trough a water filter or through the spout directly into the sink. When the tap water is directed through the water filter it fills a pre-heated water reservoir depending on the direction the spout is moved, and is drawn by opening the hot water or cold water spout. Coffee is drawn by adjusting a regulator valve which sends the hot water through a coffee filter and out the hot water spout. The reservoirs are cooled and heated elecrically with thermostats.

Abstract: A water filtering apparatus includes a filter unit, a container and a support member. The filter unit includes three filters which perform different filtering functions. One of the filters, which includes a filter membrane, has a flow control valve at the bottom thereof. The container has a connecting member which permits the filter unit to be connected to the container and an open and close member which is closed only when the container is separated from the remainder of the apparatus for purposes of transportation.

Abstract: A net for removing debris is mounted on a frame which is extendable across the width of a swimming pool. The frame has a rounded or ball-type element at each lower end which rotates about an axis to facilitate travel and to protect the swimming pool surfaces from damage as the swimming pool cleaning device is moved through the water during a cleaning operation. Handles are provided for pulling the net through the water by persons on opposing sides of the pool. The pool may be cleaned in a single pass across the length of the pool. The net may be completely or partially rolled up about at least one of the side members of the frame.

Abstract: A ceramic filter candle is formed by a skeleton of ceramic fibers and spaced apart metallic perforate reinforcing members bonded together by means of a ceramic binder and a porous ceramic coating material which partially fills the interstices between the fibers and the perforations in the reinforcing members. The candle is manufactured in a vacuum forming process wherein an aqueous slurry of the ceramic fibers and a ceramic binder is drawn through a generally cylindrical mold surface and the preformed tubular reinforcing members to deposit the fibers on the mold surface and over the reinforcing members. The fibers and the reinforcing members are subsequently coated with a ceramic material.

Abstract: A flexible fleece-like filter material is provided wherein in a matrix-like basic framework consisting of synthetic or natural fibres, ultra-finely fibrillated fibres and/or inert porous particles are incorporated as a filter medium, the filter medium forming, anchored in the matrix, chain structures provided with a cationic or anionic charge or possibly charged with other substances which influence the filtering properties or with immobilised cells and/or catalysts. A fleece is formed with a thickness of between 0.5 mm and 5 mm and preferably up to 2 mm, which is flexible and which can even be pleated. This filter material can be produced by a simple method without harming the environment.

Abstract: A strainer assembly for straining a liquid, such as paint, to be poured into a container includes a tubular strainer support having a continuous imperforate side wall structure with an open top, an open bottom, and an annular exterior flange for removably resting on the open top of the container for holding the strainer support in an upright position above the container. A filter medium, such as a mesh filtering cloth, is secured to the top of the support for holding it in the interior of the support above the container. Paint is poured through the filtering cloth to filter the paint before it passes into the container. In one embodiment, the strainer support includes an annular ridge recessed in the exterior side wall of the support adjacent the open top of the support to provide a second means for mounting the strainer support in an inverted position over a smaller-sized container.

Abstract: A strainer that is used in association with a motor-driven pump that sucks water out of outdoor pits, reservoirs, streams, ponds, and the like, usually for irrigation or watering purposes. The strainer has a cylindrical screen disposed on a spool-like body for rotation substantially about its own axis. Nozzles that are disposed interiorly of the screen spray water outwardly through the screen to both rotate the screen and to dislodge any debris that may have accumulated on it due to the pump suction force. The screen is a plastic that has a specific gravity of approximately one and it is guided for rotation by the margins of circular discs that form the axial ends of the spool-like body.

Abstract: The object of the present invention is to offer a general-purpose size filter cartridge for liquid filtration, which can extensively increase the service life for filtration. A depth type filter cartridge comprises a cylindrical hard porous core with threads wound thereupon, and it is characterized in that a sheet-like filter element is wound on said porous core directly or through a thread-winding layer, and a sheet-like filter element with a large number of pores is wound on said sheet-like filter element through a spacer.

Abstract: A disk-type filter comprising a housing having an inlet connectable to an upstream pipe and an outlet connectable to a downstream pipe, and a stack of filter units disposed within said housing for separating solid particles from a fluid flowing between filter units in said stack of filter units from an upstream side of said stack of filter units to a downstream side thereof, characterized in that said stack of filter units includes a plurality of co-operating filter units defining a plurality of paired co-operating filter surfaces, including first and second surfaces each defining a plurality of fingers, said fingers defined by said first surface being arranged in registration with said fingers defined by said second surface, the exteriors of said fingers defined by said first and second surfaces communicating with either one of an upstream side and a downstream side and the interiors of said fingers defined by said first and second surfaces communicating with the other one of said upstream side or downstream

Abstract: A shower water filter assembly includes a housing having a cavity for a filter element which is relatively large relative to the cross section of the water pipe to which the assembly is attached. A water inlet and a water outlet to the housing couple to a shower pipe and a shower nozzle, respectively. The cavity portion of the housing containing the filter element is laterally displaced from the inlet and outlet along the line of the shower pipe. When the filter assembly is operatively connected to the shower pipe, the filter element can be located vertically above the water inlet and the water outlet, and the height of the shower head is not reduced by the interspersed filter assembly.

Abstract: A replacement filter cartridge assembly includes a filter cartridge element and a reusable supporting core assembly. The filter cartridge element is cylindrical in shape and has top and bottom end caps. Either the top end cap or the bottom end cap has an opening formed through its thickness which communicates with a central bore extending longitudinally through the filter cartridge element. The supporting core assembly includes a perforated tubular core and a sealing end cap mounted on one end of the core. The core is inserted through the top or bottom end cap opening and into the central bore of the filter cartridge element. The sealing end cap rests against either the top or bottom end cap of the filter cartridge element, while the other end of the tubular core contacts the inner side of the opposite end cap of the cartridge element.

Abstract: A revised sealing structure for an injection molded filter canister, which is resistant to leaks despite the periodic warping of the lid. A nearly square cross-section groove is placed in the body of the filter around the perimeter of the body open end. Within the groove is placed a "lathe cut" gasket; this is an elastomeric gasket having a precision rectangular cross section. On the lid, centered so as to be positioned opposite the groove in the body, and sized to be nearly centered in the groove, is at least one raised, circular ridge. With the addition of the ridge to the lid, in combination with the lathe cut gasket and the revised groove, that the lid may be easily placed in sealing contact with the body, and that the incidence of leaks is substantially eliminated in reinforced plastic molded filters. No special care or skill is needed of the workman in placing and fastening the lid to the filter body to achieve a tight seal.

Abstract: A combined hold-down and manifold member is formed of ceramic and holds a plurality of candle filters in sealing engagement with a ceramic tube sheet from which the filters are supported. The hold-down and manifold member supports a plurality of gas nozzles over the open ends of the candle filters to direct pulses of cleaning gas into the filters.