Abstract: A filter cartridge constructed to prevent an enclosed pleated filter from collapsing into the through-bores formed in a rigid core in high differential pressure applications. The core is modified with reduced-dimension bores to reduce the area of filter material not supported by the core. Alternatively, or in addition, a semi-rigid or rigid core wrap is superposed about the core to add further structural support to the pleated filter. The wrap is formed as a webbed structure with the thickness and spacing of the webbing segments adjusted to partially occlude the underlying core though-bores. This reduces the effective cross-sectional diameter of the through-bores to reduce the overall area of the pleated filter unsupported by the core. The through-bores may have modified shapes to maintain the area of the through-bore and reduce the distance of the through-bore center point from portions of the core wall defining the through-bore. The core also may be modified with clustered through-bores regions.

Abstract: A liquid filter cartridge is provided. Preferred seal arrangements are provided, to provide for preferred axial load conditions, with respect to one or more of the end caps of the cartridge. Some cartridge configurations provided include no core structure or outer liner structure therein, to support axial load. Assemblies using the cartridge, and methods of assembly and use, are provided. The liquid filter cartridge can be a serviceable cartridge, or it can be retained permanently in a housing.

Abstract: A filter system including a designated filter cartridge having a geometric projection, a flow restriction valve that controls fluid flow out of a filter system, and a priming pump configured to prime the filter. The flow restriction valve. The flow restriction valve includes at least on fluid flow check valve configured to allow the priming pump to prime the filter system.

Abstract: A technique that can efficiently reduce the number of oil bubbles. An oil-bubble reducing structure that is arranged in an automatic transmission includes: a filter that is arranged in an oil path for oil flowing through the automatic transmission, wherein the filter has pores formed in its framework having a polygonal cross section.

Abstract: An aggregate processing system, including a water source, and a vibrating screen device including a plurality of spray nozzles disposed above a screen for spraying wash water onto aggregate during aggregate processing. A strainer device is provided for removing particulate debris from a water wash stream flowing from a water source to the spray nozzles, the strainer device including a filter screen having an angled shape with a convex side facing the strainer inlet and fluid flow path. The strainer is configured to induce turbulent flow for separation of the particulates by gravity, with the filter screen blocking particulates above a given size. In this manner, particulates which may otherwise lead to clogging of the spray nozzles are removed from the wash water stream.

Abstract: A purification device for water has a housing with a longitudinal axis, an upper and a lower end and a substantially round cross section. The device includes a first receptacle, arranged parallel to the longitudinal axis of the housing, for a first purification medium, and a second receptacle, which is also arranged parallel to the longitudinal axis of the housing, for a second purification medium. The receptacle for the second purification medium is arranged eccentrically with respect to the longitudinal axis of the housing.

Abstract: Multiple staged filters are provided herein. A filter may include a plurality of panels that each include a filtering front surface and a flat back surface, the filtering front surface having a first row of vertically extending protrusions spaced apart from one another to form vertical channels, a second row of vertically extending protrusions spaced apart from one another to form vertical channels, and one or more rows of filtering protrusions, where the one or more rows are vertically spaced apart from one another and extending between the first and second rows of vertically extending protrusions. Further, each row of filtering protrusions may include filtering protrusions that are spaced from one another to form filter channels having a size that is configured to receive and retain objects of a given size.

Abstract: This invention concerns a fluid purification device. The device has container, a nozzle and a removable filter element. The container is preferably a bottle and has at least partially flexible sidewalls so that it is collapsible from a first, operative condition into a second, inoperative condition. The nozzle is connectable to the container and defines a first fluid flow path along which fluid flows when, in use, filling the container and a second fluid flow path along which fluid flows when, in use, dispensing fluid from the container. The removable filter element is carried by the nozzle such that it is positioned in the first fluid flow path so that the fluid is filtered when filling the container and positioned outside the second fluid flow path so that the flow of fluid is unobstructed by it when dispensing fluid from the container. The invention also concerns a method of filtering a fluid.

Abstract: A reverse osmosis filter assembly for fluid filtration having a push-activated lock and release mechanism. A push filter design activates a floating key lock upon insertion and extraction, where the filter key may be used simultaneously as a lock and as an identifier for particular filter attributes. The filter base may be situated inline, and in fluid communication, with the raw water ingress, permeate egress, and reject water egress. The reverse osmosis filter housing assembly may be attached to, and removed from, the filter base by a push-actuated release. Upon insertion, the filter key shifts the filter lock longitudinally to receive interlocking segments. Upon extraction, the same axial push shifts the filter lock further to align the interlocking fingers within gaps that allow for easy extraction. The specific key lock design allows a user to identify and match certain filter configurations received by the mechanical support, and reject other filter configurations.

Abstract: A filtering unit includes a filtering component having inner and outer walls arranged around each other so as to define an inner space between the inner wall and the outer wall, a filtering mesh partitioning the inner space into a pre-filter chamber and a post-filter chamber, at least said pre-filter chamber being circumferentially compartmented in sectors, a divider arranged coaxially with the filtering component and having distinct distribution columns, and a rotary backwashing distributor having a shutter provided with a discharge opening, the rotary backwashing distributor being mounted to rotate so that said discharge opening is periodically and selectively put into communication with each distribution column, whereby each distribution column periodically and selectively establishes communication between the discharge opening and respective ones of the sectors. The rotary backwashing distributor is in direct contact with the divider.

Abstract: Support and drainage materials, filter including the materials, and methods of use are disclosed.

Abstract: A filter element for filtering fluid has a filter medium surrounding an inner cavity extending axially in the filter element. An axially extending sealing connecting piece is arranged at an axial end of the filter element. The sealing connecting piece has an opening fluidically connecting the inner cavity to a fluid channel of a filter housing and also has a seal holder structure. A double concentric seal is arranged at the sealing connecting piece and closes a drainage channel of the filter housing. The double concentric seal has radially inner and radially outer sealing elements. One of the sealing elements has an elastically deformable sealing lip that extends away from the sealing connecting piece radially and axially toward the filter medium and can be pressed against a sidewall of the drainage channel of the filter housing. The other sealing element is an oil seal arranged in the seal holder structure.

Abstract: A method for forming a filter for passing contaminated water using elements that are made wholly or partly of degradable material. The increased area available for flow is obtained by providing a first media for which the increase in area for passing the contaminated water is desired, adding a second media comprising of a plurality of degradable elements, and allowing the elements of to degrade to bring about an increase in the area available for passing the contaminated water.

Abstract: A filter assembly for fluid filtration having a push-activated lock and release mechanism. A push filter design activates a filter key lock upon insertion and extraction, where the filter key may be used simultaneously as a lock and as an identifier for particular filter attributes. The filter housing assembly may be attached to, and removed from, a filter base by a push-actuated release. Upon insertion, the filter key shifts the filter lock longitudinally to receive interlocking segments. Upon extraction, the same axial push shifts the filter lock further to align the interlocking fingers within gaps that allow for easy extraction. The specific key lock design allows a user to identify and match certain filter configurations received by the mechanical support, and reject other filter configurations.

Abstract: A novel fluid filter includes a partially permeable elastic bag encapsulating a filtration medium, and providing pressure to prevent channeling. A receiver with one or more apertures fits at least partially within the filtration bag to receive treated fluid. A cover may be placed over a tube of the receiver to prevent filtration medium from exiting system. An upper portion of the filtration bag is impermeable, while the lower portion of the bag is permeable. The fluid path flows over the top and up through the lower section and through a major path through the filtration medium.

Abstract: A method for forming a filter for passing contaminated water using a device and one or more media. The device comprises of one or more elements that are capable of undergoing degradation. The increased area available for flow is obtained by adding a first media to predetermined areas of the device and allowing the elements to undergo degradation to bring about an increase in the area available for passing the contaminated water.

Abstract: A traveling water screen comprises a basket having a frame including an upper portion, a lower portion, and side portions, a coarse screen secured to the frame, a fine screen overlay attachable to the coarse screen, and a bucket portion secured to a lower portion of the frame, comprising an inner wall surface, and at least one deflector secured to the inner wall surface.

Abstract: A capture unit for use with an antimicrobial application unit may include an upstream filter and a downstream filter. The upstream filter may be positioned to receive effluent from the application unit and to filter solid components from the effluent. The resultant upstream effluent filtrate may then be passed downstream to the downstream filter. The downstream filter may be used to filter an antimicrobial component from the upstream effluent filtrate and the resultant downstream effluent filtrate may be suitable for disposal as wastewater discharge. The antimicrobial is preferably a quaternary ammonium compound, is more preferably an alkylpyridinium chloride, and is most preferably cetylpyridinium chloride.

Abstract: A water filter system includes a removable filter unit having a body portion including a proximal end and a distal end. The proximal end is adapted to be inserted into a filter head assembly. A laterally extending key member is disposed on the body portion and adapted to engage a key slot in the filter head assembly. An engagement protrusion extends from the proximal end. The engagement protrusion includes a first portion that has a first radius of curvature and a second portion opposing the first portion that includes a second radius of curvature that is larger than the first radius of curvature.

Abstract: A filtration filter device according to the present invention includes a filtration filter that filters out a filtration object contained in a fluid and a housing in which the filtration filter is disposed. The housing includes a fluid inlet passage that faces one main surface of the filtration filter and a fluid outlet passage that faces the other main surface of the filtration filter. An inner peripheral surface of at least one of the fluid inlet passage and the fluid outlet passage is undulated.