| Purolator Filters NA LLC Patent applications |
| Patent application number | Title | Published |
|---|
| 20110168622 | High Efficiency, High Capacity Filter Media - A high efficiency, high capacity fluid filter element that is suitable for meeting stringent cleanliness requirements has multiple filter layers. These layers include a cellulose and glass fiber first layer, a water repellant polybutylene terepthalate meltblown second layer, and a protective third layer providing structural support to the first and second layers. By way of an appropriate production procedure, the first, second, and third layers are laminated to define the filter element. | 07-14-2011 |
| 20110062075 | Space Reducing Filter With Supplemental Fluid Processing Element - A fuel filter, such as a filter for filtering gasoline or diesel fuel to be supplied to an internal combustion engine, includes an annular main filter element through which fluid to be filtered can pass radially, and a supplemental fluid processing element disposed within the main filter element to which fluid discharged from the main filter element passes. The filter also has end caps, between which opposite ends of both the main filter element and the supplemental fluid processing element are disposed, and to which the opposite ends of both the main filter element and the supplemental fluid processing element are secured. Fluid is discharged from a central volume of the filter through one of the end caps. | 03-17-2011 |
| 20110062072 | Filter with Main and Supplemental Filter Elements and Optional Bubble Breaker - A fluid filter providing several degrees of filtering is designed to be receivable in a filter container that is closable by a cover. The filter itself includes both an annular main filter element, through which fluid to be filtered can pass radially to undergo primary filtration, and a supplemental filter element, to which fluid discharged from the main filter element passes to provide supplemental filtration additional to the primary filtration. The main filter element, the supplemental filter element, or both may be oblong or circular in cross section. At least one of a pair of end caps disposed on opposed ends of the main filter element carries the supplemental filter element as well as one end of the main filter element. That end cap may or may not be permanently secured to the one filter element end. | 03-17-2011 |
| 20100288688 | Full Flow Liquid Filter with Integral Bypass Filtration - A fluid filter has an outer case with a side wall, a closed first end wall, and a second end wall defining fluid inlet and outlet openings, as well as a filter cartridge received within the outer case. The filter cartridge includes a substantially cylindrical full flow filter element, providing for passage of a major portion of fluid entering the filter, and a substantially cylindrical bypass filter element, providing for passage of a minor portion of fluid entering the filter and disposed radially within and surrounded circumferentially by the full flow filter element. By way of the particular fluid filter configuration disclosed, a simple alternative to known filters having full flow and bypass filters located in common housings is provided. | 11-18-2010 |
| 20100108589 | Single-Piece Tapped Plate and Retainer for Fluid Filters - The present invention relates generally to a fluid filter assemblies. In particular, the present invention is directed to fluid filter assemblies comprising a single-piece tapped plate and retainer. | 05-06-2010 |
| 20100071851 | Channel Roll for Oil Media Pleaters - The present invention relates generally to the manufacture of oil filters. The present invention provides a channel roll with a unique design that minimizes the channel roll surface contact with oil filter media. The design includes the formation of ridges projecting from the surface of the channel roll of such a design that is sufficient to control movement of the roll of oil media into the oil media pleating process, yet greatly reduce the surface contact with the oil media. | 03-25-2010 |
| 20100000930 | Drain Pipe Connector for Fluid Filters - The present invention is directed to a no-leak drain pipe connector for a fluid filter which helps prevent the splashing of hot fluid on individuals performing filter element and oil changes. | 01-07-2010 |
| 20100000922 | Truss Type High Pressure Center Support for Liquid Filtration - A central support for a liquid filter is described. The support has a truss element disposable centrally in the liquid filter to provide a crush-resistant structure supporting a filter media of the liquid filter, elongated straight members of the truss element, connected at joints to form a coplanar cross section, and longitudinal members of the truss element, connecting the coplanar cross section and additional coplanar cross sections in a column-like configuration. The contact surfaces of the truss element for interfacing with the filter media are adapted to spread forces on the filter media over a desired surface area. | 01-07-2010 |
| 20100000918 | Two Piece Non-Metallic Relief Valve - A fluid filter is described, which includes a housing having a first end portion defining fluid inlet and fluid outlet areas, a filter media disposed in the housing, having inlet surfaces communicating with the fluid inlet and outlet surfaces communicating with the fluid outlet, and a relief valve assembly for selectively opening a filter bypass connecting the fluid inlet and the fluid outlet. The relief valve assembly has a media plug for anchoring it in the filter media, the media plug having a bypass aperture connecting to the fluid outlet, and a valve element secured to the media plug. The valve element has a valving portion cooperating with the bypass aperture in the media plug for resiliently closing the bypass aperture when an inlet fluid pressure is below a threshold pressure, and for opening the bypass aperture when the inlet fluid pressure is above the threshold pressure. | 01-07-2010 |
| 20090211964 | Corrugated-Ribbed Thread Plates for Oil/Fuel Spin-on Filters - An improved, reduced waste fluid filter has a concave housing having a first end, a second end, a fluid inlet port and a fluid outlet port. A cover plate assembly is sealably attached to a second end of the housing providing a closed area with which the inlet and outlet ports communicate. The cover plate assembly contains a retainer and a thread mounting plate. The improved thread mounting plate has thin steel with corrugations or ribs for stiffening the plate and is assembled with the retainer to form the cover plate assembly. An elongated cylindrical disposable fluid filter element is supported within the closed area of the housing and cover plate assembly. The filter element has a perforated center tube, a first end of which communicates with the fluid outlet port, the other end of the center tube being closed. The center tube has a filter media there around so that fluid flow into the closed area through the inlet port flows through the filter media and into the center tube to pass out through the outlet port. | 08-27-2009 |
| 20090211955 | Anti-Drainback Valve with Position Positive Locking for Spin-on Oil and Fuel Filters - An anti-drainback valve contains a locking mechanism for securing the valve into to a filter assembly. The locking mechanism is made up of at least two keys that extend from the valve into beyond a cap of the filter assembly in order to secure the valve within the filter assembly. When multiple keys are employed, such keys may be equally spaced around the circumference of the cap. Manufacturing costs are kept minimal as minimal material is required and a two part mold may be employed during manufacturing. | 08-27-2009 |
| 20090178964 | One Piece Combination Anti-Drain Back and Relief Valve - A fluid filter and an end cap of the fluid filter are described. The filter may be a spin on oil filter, which includes a combination dual valve element defining an integral anti-drain back valve and an integral relief valve, a retainer assembly for maintaining the combination dual valve element in position in the end cap, relative to the filter. The combination dual valve element includes a ADB sealing lip forming an anti-drain back valve portion, and a RV sealing lip forming a relief valve portion. | 07-16-2009 |
| 20090178963 | Two Part Resilient Combination Bottom Support and Relief Valve End Seal Assembly for Fluid Filters - A fluid filter is described, comprising a filter body defining a cavity for a filter element, a first end cap for fitting on one end of the filter body, having an integrated single piece anti drain back valve and seal, and a second end cap for fitting on an opposite end of the filter body, having an integrated two part relief valve and supports for the filter element, formed by a relief valve body and a relief valve disc. | 07-16-2009 |
| 20090155463 | HOT MELT GLUE APPLICATOR - An apparatus for transferring adhesive material to portions of filter elements that are displaced relative to the apparatus includes a dispenser from which heated adhesive material is discharged, a transfer arrangement that receives discharged adhesive material and transfers the discharged adhesive material to the portions of the elements as they are displaced, and a cooling arrangement. The cooling arrangement cooperates with the transfer arrangement to cool the discharged adhesive material while the adhesive material is carried by the transfer arrangement to the adhesive material receiving portions of the elements. A process by which adhesive material is transferred to adhesive material receiving portions of the filter elements, as well as an air line panel filter produced by that process, are also discussed. | 06-18-2009 |
| 20090057216 | Chemical Additive Carrier for Filter - A delivery device for a chemical additive is provided for an oil filter. A carrier supporting a chemical additive is arranged within a central opening of a pleated filter media. The carrier interlocks with a center tube, also arranged within the central opening, that supports that filter media. The carrier includes fingers that axially and radially locate the carrier to prevent movement of the carrier within the filter. | 03-05-2009 |
| 20090038748 | Fuel Filter Diverter - A fuel filter assembly includes a housing having an end supporting a first tube. The housing defines a cavity that is enclosed by a cover opposite the end. A diverter is arranged within the cavity and includes first and second sides with the first side adjacent to the housing end. The diverter includes a wall on the first side in sealing engagement with either the first tube or the housing end. The diverter is constructed from a first material forming a base and a second material supported by the first material defining at least a portion of the first side. The second material may be overmolded onto the first material. Preferably, the first material is a plastic and the second material is an elastomer forming a gasket suitable for providing a seal between the diverter and the housing. One end of the filter media is embedded in the adhesive on the second side of the diverter. | 02-12-2009 |
