Abstract: An environmentally friendly dual lube venturi filter cartridge which has no metallic components. A plastic centertube having a venturi section supports a bypass filter element on standoffs molded into the centertube. An outer concentric full flow filter element surrounds the bypass filter. The full flow filter is supported on a plastic centertube which creates a gap between it and the bypass filter. A first bypass filter endcap both seals the bypass filter and provides standoffs for allowing full flow oil around the bypass filter. The standoffs thus split the full flow which progresses through the primary filter in two paths, a primary path around the bypass filter and into the centertube, and a bypass path through the secondary filter and the venturi. Plastic upper and lower endcaps carry grooves for simple sealing gaskets, a radial seal gasket on the bottom which seals against both the endcap which carries it and a flange in the housing, and an axial seal gasket at the top.

Abstract: A filter cartridge which is environmentally friendly in that it is made up of components which are all incinerateable. The ends of a filter element are sealed using potting compound and plastic endcaps. The upper endcap, which is closed, has a pressure relief aperture associated therewith to prevent bowing. In a plugged filter condition the high downward pressure introduced on the upper endcap is compensated by providing the cartridge with centering ribs which bottom on an associated ledge in the housing to provide a positive stop for the top endcap, preventing it from being driven down into and through the filter element. Rubber gaskets are associated with the respective endcaps, and are reliably secured to the endcaps by being snap fit into grooves molded into the plastic of the endcaps. The lower endcap utilizes a simple radial seal gasket which is both highly effective and also positioned to avoid structural crushing forces on the cartridge. A keying system prevents the installation of improper filters.

Abstract: A servlet filter receives all incoming requests for dynamic content and can be used to ensure that the load on a server does not become too great during the time the server is engaged in start-up. The filter is configured to be the first filter encountered and will evaluate a series of conditions to determine if the request is to be throttled. For selected URLs, a given percentage of the first requests received after start-up are automatically throttled. If the request is throttled, a message is sent to the user that the server is busy but to try later. Servlets that are not throttled are allowed to flow through to be processed normally.

Abstract: An environmentally friendly dual lube venturi filter cartridge which has no metallic components. A plastic centertube having a venturi section supports a bypass filter element on standoffs molded into the centertube. An outer concentric full flow filter element surrounds the bypass filter. The full flow filter is supported on a plastic centertube which creates a gap between it and the bypass filter. A first bypass filter endcap both seals the bypass filter and provides standoffs for allowing full flow oil around the bypass filter. The standoffs thus split the full flow which progresses through the primary filter in two paths, a primary path around the bypass filter and into the centertube, and a bypass path through the secondary filter and the venturi. Plastic upper and lower endcaps carry grooves for simple sealing gaskets, a radial seal gasket on the bottom which seals against both the endcap which carries it and a flange in the housing, and an axial seal gasket at the top.

Abstract: An environmentally friendly acid neutralizing filter cartridge is adapted to be mounted in a cartridge mounting body of an engine oil circuit for filtering particulates and neutralizing acid in oil. The filter cartridge comprises a support housing that comprises substantially no metal parts such that the filter cartridge can be readily incinerated. A full flow particulate filter and a bypass particulate filter are arranged in the support housing. A bed of acid neutralizing particles is contained in the support housing. The housing is configured such that a predetermined primary flow path is defined through the filter cartridge that passes through the full flow particulate filter and bypassing the bed of acid neutralizing particles; and a predetermined bypass path is defined through the filter cartridge that passes, in sequence, through the bed of acid neutralizing particles and the bypass particulate filter.

Abstract: A filter assembly including a combination filter element for double filtration of air or other gasses is provided. The combination filter element includes a first filter medium and a second filter medium connected together. The first filter medium has an upstream face, a spaced-apart downstream face, and a plurality of channels extending therebetween. The second filter medium is located adjacent the downstream face. Gases entering the first filter medium through the upstream face flow in the channels and, upon exiting the downstream face, are directed toward the second filter medium. To connect the first and second filter mediums, a connecting band extends about the peripheries of the mediums.

Abstract: A filter element, and filter apparatus, include a filter pack, a seal member, and a seal support frame operatively connecting the seal member to the filter pack. The seal support frame includes an annular extension, which is preferably canted at an oblique angle to a longitudinal axis, for supporting the seal member. The seal support frame also preferably includes a first end thereof including the annular extension, and a second end thereof spaced from the first end thereof along the longitudinal axis, with the first and second ends of the seal support frame joined by a hub of the outer peripheral sidewall of the seal support frame to define a cavity within the seal support frame for receiving the filter pack. The first and second ends of the seal support frame, and the filter pack are preferably joined and sealed to one another by a single bead of adhesive.

Abstract: A sealing apparatus, for operatively and separably connecting a filter element to a filter housing in a manner that seals a juncture between the filter housing and the filter element when the filter element is installed in filter housing, includes a seal member attached to a canted annular extension of a seal support frame. Filter elements and apparatuses incorporating such a separable sealing apparatus are also provided.

Abstract: A filter assembly including a tubular filter housing and a removable filter element for use therein that employ a compressible seal element. The seal element connected to the rest of the filter element and located to sealingly engage the filter housing. In an aspect, a separate, rigid support member is disclosed that supports the seal element against the filter housing to improve the seal and prevent distortion of the compressible seal material. In another aspect, an end cap connecting the seal element to the rest of the filter housing includes an extending leg having improved features for retaining the seal element to the end cap. In another aspect, the seal element can be retentively received in a slotted member attached to the filter element.

Abstract: An acid neutralizing filter construction is provided that may be used as a bypass type filter. The filter includes a canister having an open end. An end plate is secured to the canister at the open end and includes an inlet port and an outlet port to provide for fluid communication with a mounting adaptor of an oil circuit. A reactor housing is arranged inside the canister and comprises a bowl and a lid. The reactor housing defines an entrance port and an exit port. An acid neutralizing bed of acid neutralizing particles is deposited in the reactor housing. The acid neutralizing particles comprises primarily of calcium carbonate compound or other suitable medium which may be provided by crushed limestone. A particulate filter is also arranged in the reactor housing between the acid neutralizing bed and the exit port.

Abstract: Under the present invention, a set of filters (e.g., one or more) is associated with a hierarchical tree, which includes sets of namespace nodes, element nodes and variable nodes. Once the set of filters is associated with the hierarchical tree, a network document is parsed and compared to the hierarchical tree to identify a set of corresponding filters. Each corresponding filter is then evaluated based on the network document to determine which, if any, are “satisfied.” The network document is then communicated to the user(s) that correspond to the satisfied filter(s).

Abstract: In a process of making gas laid products by entraining particles at least partially coated with a binder in a gaseous stream, passing the stream through a forming chamber and through a permeable collecting surface where the particles build up to form a product like fiber glass insulation, this invention prevents particles from contacting and building up on the walls of the forming chamber and causing wet spots in the finished product by maintaining a high velocity, high pressure layer of gas close to the exposed surface of the walls of the chamber and moving in the general direction of the gaseous stream. This is accomplished by apparatus including a plurality of plenum boxes forming the walls of the forming chamber with the surface exposed to the gaseous stream having gas directing openings therein. Also, an improved method of applying the binder to the particles is disclosed.

Abstract: In a process of making gas laid products by entraining particles including fibers at least partially coated with a binder in a gaseous stream, passing the stream through a forming chamber and through a permeable collecting surface where the particles including fibers build up to form a product like fiber glass insulation, this invention prevents particles including fibers from contacting and building up on the walls of the forming chamber and causing wet spots in the finished product by maintaining a high velocity, high pressure layer of gas close to the exposed surface of the walls of the chamber and moving in the general direction of the gaseous stream. This is accomplished by apparatus including a plurality of plenum boxes forming the walls of the forming chamber with the surface exposed to the gaseous stream having gas directing openings therein.