초록 ▼

A water filter cartridge has a cap with radially oriented first and second (either inlet or outlet) flow channels on first and second generally cylindrical portions. First and second seals encircle the first flow channel on the first portion and third and fourth seals encircle the second flow channe

A water filter cartridge has a cap with radially oriented first and second (either inlet or outlet) flow channels on first and second generally cylindrical portions. First and second seals encircle the first flow channel on the first portion and third and fourth seals encircle the second flow channel on the second portion. The second and third seals form a void volume during use which may be accessed by a vent path to eliminate moisture or to test for or indicate leaks. The radial flow paths reduce axial, push out forces on the filter cartridge and allow smaller locking tabs to be used. The first seal forms a top void volume during use which may be accessed by a vent path to eliminate moisture or to test for or indicate leaks.

대표청구항 ▼

1. A filter cartridge for use with a filter apparatus manifold head having a flow inlet and a flow outlet, the filter cartridge having a filter element located in a housing with the filter element in fluid communication with a filter inlet and filter outlet so that liquid from the manifold flow inle

1. A filter cartridge for use with a filter apparatus manifold head having a flow inlet and a flow outlet, the filter cartridge having a filter element located in a housing with the filter element in fluid communication with a filter inlet and filter outlet so that liquid from the manifold flow inlet passes through the filter inlet and filter and out the manifold flow outlet, the filter cartridge comprising: a filter cap having a first generally cylindrical portion with a first fluid passageway extending radially inward toward a longitudinal axis of the filter cartridge and forming one of the inlet or outlet of the filter cartridge, the filter cap having a second generally cylindrical portion with a second fluid passageway extending radially inward toward the longitudinal axis and forming the other of the inlet or outlet of the filter cartridge, the filter cap having a closed top at one end with the first generally cylindrical portion closer to the closed top than the second generally cylindrical portion, the first and second generally cylindrical portions having respective first and second outer diameters with the first outer diameter being smaller than the second outer diameter, the filter cap having a first internal cavity formed in part by first generally cylindrical inner walls in fluid communication with the first fluid passageway and extending along the longitudinal axis, the filter cap having a second internal cavity in fluid communication with the second fluid passageway and formed in part by second generally cylindrical inner walls extending along the longitudinal axis;first and second seal members encircling the first generally cylindrical portion on opposing top and bottom sides of the first fluid passageway, respectively;third and fourth seal members encircling the second generally cylindrical portion on opposing top and bottom sides of the second fluid passageway, respectively, the second and third seal members being separated by a middle distance, at least one of the third and fourth seal members being larger in diameter than the first and second seal members;outwardly extending mounting tabs connected to the filter cartridge having an inclined surface configured to releasably connect the filter cartridge to one of an adapter or manifold head by rotation of the cartridge. 2. The filter cartridge of claim 1, wherein the first generally cylindrical inner walls are smaller in diameter than the second generally cylindrical inner walls. 3. The filter cartridge of claim 1, wherein a first channel is formed in the first generally cylindrical portion, the first channel encircling at least a substantial portion of the first generally cylindrical portion and located between the first and second seals and in fluid communication with the first fluid passageway. 4. The filter cartridge of claim 3, wherein a first channel is formed in the first generally cylindrical portion, the first channel encircling at least a substantial portion of the first generally cylindrical portion and located between the first and second seals and in fluid communication with the first fluid passageway and an outwardly extending connecting flange at an opposing end of the filter cap; a second channel formed in the second generally cylindrical portion, the second channel encircling at least a substantial portion of the second generally cylindrical portion and located between the first and second seals and in fluid communication with the second fluid passageway. 5. The filter cartridge of claim 1, wherein the mounting tabs have a thickness of about ⅛ inch to about ¼ inch and are made of plastic. 6. The filter cartridge of claim 1, further comprising a filter cap vent passage located between the second and third seal members and extending through one of the first and second generally cylindrical portions to form a fluid passage, with one end of the vent passage opening onto an outside surface of the filter cap and an opposing end of the vent passage opening on an inside surface of the fluid cap. 7. A lateral filter cartridge for lateral connection with a filter manifold head having a flow inlet and a flow outlet, the filter cartridge having a longitudinal cartridge axis and a filter element located in a filter housing with the filter element in fluid communication with a filter inlet and filter outlet so that liquid from the manifold flow inlet passes through the filter inlet and filter and out the manifold outlet, the lateral filter cartridge comprising: a lateral filter cap having a first generally cylindrical portion with a first fluid passageway extending inward toward a longitudinal axis of the lateral filter cap, the lateral filter cap axis being in a plane orthogonal to the filter cartridge axis, the first fluid passageway forming one of the inlet or outlet of the filter cartridge, the lateral filter cap having a second generally cylindrical portion with a second fluid passageway extending inward toward the lateral filter cap axis and forming the other of the inlet or outlet of the lateral filter cartridge, the lateral filter cap having a closed end with the first generally cylindrical portion further from the filter axis than the second generally cylindrical portion, the first and second generally cylindrical portions having respective first and second outer diameters with the first outer diameter being smaller than the second outer diameter, the filter cap having a first internal cavity formed in part by the first generally cylindrical portion and in fluid communication with the first fluid passageway and extending along the lateral filter cap longitudinal axis along a length of the first and second generally cylindrical portions of the lateral filter cap, the filter cap having a second internal cavity extending along the second, generally cylindrical portion of the lateral filter cap and comprising an annular recess encircling the first internal cavity and extending along the filter cap longitudinal axis, the lateral filter cap connecting to a distal end of the filter housing enclosing the filter;first and second seal members encircling the outside of the first generally cylindrical portion on opposing sides of the first fluid passageway, respectively; andthird and fourth seal members encircling the outside of the second generally cylindrical portion on opposing sides of the second fluid passageway, respectively, the second and third seal members being separated by a middle distance, the third and fourth seal members each having the same diameter which is larger than a diameter of either the first or second seal members. 8. The lateral filter cartridge of claim 7, further comprising a portion of a locking mechanism on the lateral filter cap to retain lateral movement of the filter cap along the lateral filter cap axis. 9. The lateral filter cartridge of claim 8, wherein the distal end of the filter cartridge has an axial face generally parallel to the filter cartridge longitudinal axis and offset to one side of the filter cartridge longitudinal axis, with the closed end of the lateral filter cap adjacent a generally cylindrical plane conforming to a periphery of the housing enclosing the filter. 10. The lateral filter cartridge of claim 7, wherein the filter cartridge has a distal end with an offset tubular neck located on one end of the filter in fluid communication with the first internal cavity of the lateral filter cap, the neck being offset to one side of the longitudinal filter axis to locate the closed end of the first portion toward the filter cartridge longitudinal axis. 11. A filter cartridge for use with a filter apparatus manifold head having a flow inlet and a flow outlet, the filter cartridge having a filter element located in a housing with the filter element in fluid communication with a filter inlet and filter outlet so that liquid from the manifold flow inlet passes through the filter inlet and filter and out the manifold flow outlet, the filter cartridge comprising: a filter cap having a first generally cylindrical portion with a first fluid passageway extending radially inward toward a longitudinal axis of the filter cartridge and forming one of the inlet or outlet of the filter cartridge, the filter cap having a second generally cylindrical portion with a second fluid passageway extending radially inward toward the longitudinal axis and forming the other of the inlet or outlet of the filter cartridge, the filter cap having a closed top at one end with the first generally cylindrical portion closer to the closed top than the second generally cylindrical portion, the first and second generally cylindrical portions having respective first and second outer diameters with the first outer diameter being smaller than the second outer diameter, the filter cap having a first internal cavity formed in part by first generally cylindrical inner walls in fluid communication with the first fluid passageway and extending along the longitudinal axis, the filter cap having a second internal cavity in fluid communication with the second fluid passageway and formed in part by second generally cylindrical inner walls extending along the longitudinal axis;first and second seal members encircling the first generally cylindrical portion on opposing top and bottom sides of the first fluid passageway, respectively;third and fourth seal members encircling the second generally cylindrical portion on opposing top and bottom sides of the second fluid passageway, respectively, the second and third seal members being separated by a middle distance, anda filter cap vent passage located between the second and third seal members and extending through one of the first and second generally cylindrical portions to form a fluid passage, with one end of the vent passage opening onto an outside surface of the filter cap and an opposing end of the vent passage opening on an inside surface of the fluid cap. 12. A lateral filter cartridge for lateral connection with a filter manifold head having a flow inlet and a flow outlet, the filter cartridge having a longitudinal cartridge axis and a filter element located in a filter housing with the filter element in fluid communication with a filter inlet and filter outlet so that liquid from the manifold flow inlet passes through the filter inlet and filter and out the manifold outlet, the lateral filter cartridge comprising: a lateral filter cap having a first generally cylindrical portion with a first fluid passageway extending inward toward a longitudinal axis of the lateral filter cap, the lateral filter cap axis being in a plane orthogonal to the filter cartridge axis, the first fluid passageway forming one of the inlet or outlet of the filter cartridge, the lateral filter cap having a second generally cylindrical portion with a second fluid passageway extending inward toward the lateral filter cap axis and forming the other of the inlet or outlet of the lateral filter cartridge, the lateral filter cap having a closed end with the first generally cylindrical portion further from the filter axis than the second generally cylindrical portion, the first and second generally cylindrical portions having respective first and second outer diameters with the first outer diameter being smaller than the second outer diameter, the filter cap having a first internal cavity formed in part by the first generally cylindrical portion and in fluid communication with the first fluid passageway and extending along the lateral filter cap longitudinal axis along a length of the first and second generally cylindrical portions of the lateral filter cap, the filter cap having a second internal cavity extending along the second, generally cylindrical portion of the lateral filter cap and comprising an annular recess encircling the first internal cavity and extending along the filter cap longitudinal axis, the lateral filter cap connecting to a distal end of the filter housing enclosing the filter;first and second seal members encircling the outside of the first generally cylindrical portion on opposing sides of the first fluid passageway, respectively; andthird and fourth seal members encircling the outside of the second generally cylindrical portion on opposing sides of the second fluid passageway, respectively, the second and third seal members being separated by a middle distance; anda filter cap vent passage located between the second and third seal members and extending through one of the first and second generally cylindrical portions to form a fluid passage, with one end of the vent passage opening onto an outside surface of the filter cap and an opposing end of the vent passage opening on an inside surface of the fluid cap.