A draw latch retainer is used to secure a filter cartridge to a filter head. A cam actuated retainer extends from the head to engage a keeper in the top of the cartridge. Rotation of the cam draws the retainer and cartridge axially toward the head into an installed position. The retainer extends thr
A draw latch retainer is used to secure a filter cartridge to a filter head. A cam actuated retainer extends from the head to engage a keeper in the top of the cartridge. Rotation of the cam draws the retainer and cartridge axially toward the head into an installed position. The retainer extends through an aperture in the upper portion of the cartridge to apply a retention force against the bottom side of the keeper. The keeper and upper portion of the cartridge supporting the keeper are configured to transmit the retaining force laterally across the top of the cartridge. A pair of axial conduits project from the cartridge and mount O-ring seals for implementing an axial sealing interface with passages in the head.
대표청구항▼
1. A filter cartridge for mounting to a filter head, the filter cartridge comprising: a housing having a longitudinal axis, an open first end and defining a cavity;filter element disposed in said housing and separating said cavity into an unfiltered region and a filtered region, said filter element
1. A filter cartridge for mounting to a filter head, the filter cartridge comprising: a housing having a longitudinal axis, an open first end and defining a cavity;filter element disposed in said housing and separating said cavity into an unfiltered region and a filtered region, said filter element configured so that fluid passes through the filter element between the unfiltered region and the filtered region;a communication hub defining first and second axial fluid flow conduits in communication with the unfiltered region and the filtered region, respectively, and each conduit having an exterior circumferential sealing surface, said hub having a first surface facing axially away from said cavity and defining a central well and a second surface facing said cavity; anda keeper module disposed over said communication hub, said keeper module spanning said first end and secured to said housing with said communication hub axially intermediate said filter element and said keeper module, said keeper module defining first and second openings through which said first and second conduits respectively extend and defining a retainer receiving aperture adjacent a keeper, said keeper is axially aligned with said central well, and said keeper and aperture are located adjacent or on said longitudinal axis, wherein said aperture permits access to said keeper from a location outside said cavity and said keeper is configured to receive and distribute a retention force directed away from said cavity. 2. The filter cartridge of claim 1, wherein said keeper is integral with said keeper module. 3. The filter cartridge of claim 1, wherein said longitudinal axis passes through said keeper and said aperture is offset from said longitudinal axis. 4. The filter cartridge of claim 1, wherein said keeper module comprises a projecting ramp which leads toward said aperture. 5. The filter cartridge of claim 1, wherein said cartridge housing comprises a generally cylindrical can with a lip adjacent said first end, said lip being deformed radially inwardly to retain said keeper module to said housing. 6. The filter cartridge of claim 1, wherein said keeper module having a ring mounted thereon, said ring having a plurality of axially extending keys defining a compatibility matrix. 7. The filter cartridge of claim 6, wherein said plurality of axially extending keys includes at least one key positioned on a diameter of said keeper module passing through said keeper and said aperture. 8. The filter cartridge of claim 1, wherein said filter element is configured to have an open end adjacent said communication hub and a closed second end cap adjacent the second end of said housing. 9. The filter cartridge of claim 1, wherein said keeper has a convex surface facing said cavity. 10. The filter cartridge of claim 1, wherein said hub is exteriorly configured to mount a circumferential sealing member. 11. The filter cartridge of claim 1, wherein said hub is exteriorly configured with a circumferential sealing structure. 12. The filter cartridge of claim 1, wherein each conduit has an exterior sealing ring. 13. A filter assembly comprising: a head having a cartridge receptacle and defining a first axial passage and a second axial passage extending to said cartridge receptacle, said head supporting a shaft and a retainer engaged with said shaft and extending into said receptacle, said retainer including an arm terminating in a latch;a filter cartridge received in said cartridge receptacle, said filter cartridge comprising: a housing, a filter element positioned within said housing having filter media arranged to separate an interior volume of said cartridge into unfiltered and filtered regions so that fluid passing through said filter media moves from said unfiltered to said filtered region, anda communication hub substantially spanning a first end of said housing and engaged thereto, said hub having a first axial conduit in communication with said unfiltered region and having a circumferential sealing surface sealing with said first axial passage, a second axial conduit in communication with said filtered region and having a circumferential sealing surface sealing with said second axial passage, said hub defining a well; anda keeper module disposed above said hub, joined to said housing and forming a retainer receiving aperture providing access to said well and a keeper adjacent said aperture,wherein said retainer extends through said aperture into said well, said latch engages said keeper wherein rotation of said shaft in a first direction draws the retainer toward the head to exert an axial retention force to secure said cartridge in said cartridge receptacle with said first axial passage in fluid tight communication with said first conduit and said second axial passage in fluid tight communication with said second conduit, and wherein rotation of said shaft in a second direction releases the latch away from the keeper. 14. The filter assembly of claim 13, wherein said latch has a concave surface generally facing said head, and said keeper comprises a convex surface generally disposed at said well and complementary to said concave surface. 15. The filter assembly of claim 13, further comprising a ramp projecting adjacent said aperture. 16. The filter assembly of claim 13, wherein said keeper module has a first surface facing said head, said keeper module first surface including at least one axially projecting key, said cartridge receptacle including a mating surface defining a recess complementary to said key, said key being received in said recess when said filter cartridge is installed to said head. 17. The filter assembly of claim 13, wherein said shaft is configured with a valve, said valve closing a fluid passageway upon rotation of said shaft in said second direction to release said latch from said keeper and said valve opening said fluid passageway when said shaft is rotated in said first direction to engage said latch with said keeper and secure said cartridge to said head. 18. The filter assembly of claim 17 wherein said valve interrupts communication between said first axial passage and said first axial conduit or between said second axial passage and said second axial conduit. 19. The filter assembly of claim 13 further comprising a handle moveable for rotating said shaft. 20. The filter assembly of claim 19 wherein said handle is releasably retained in a first position by engagement of a boss in a handle recess.
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이 특허에 인용된 특허 (15)
Ruprecht, John C., Canter element controlled combination manifold, valve and filter module system.
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