Cartridge filter system
First Claim
Patent Images
1. A cartridge filter, comprising:
- at least one filter media having a bottom surface and a top surface generally opposite the bottom surface;
an outlet tube extending from the bottom surface into the filter toward the top surface; and
at least one seal positioned in the outlet tube in closer proximity to the top surface than to the bottom surface for sealing the outlet tube to a standpipe of a fluid filter tank wherein the standpipe is coupled to the outlet tube by the at least one seal; and
a fluid collection tube that is located between the top surface and the seal for collecting fluids having passed through the at least one filter media,wherein the fluid collection tube includes at least one aperture for receiving fluids having passed through the at least one filter media, and wherein the at least one aperture has a cross-sectional area that is greater than a cross-sectional area of a diameter of the standpipe.
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Abstract
A fluid filter system including a cartridge filter housed in a tank having a standpipe extending from a bottom surface of the tank. The cartridge filter is positioned in the tank with the standpipe extending into an outlet tube in the filter. Fluids flow into the tank, through the filter, and out through the standpipe. The cartridge filter may include a seal in an upper portion of the filter for sealing the cartridge filter to the standpipe in a position that is above the contaminant laden fluids and debris that collect at the bottom of a tank during removal of a cartridge filter.
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Citations
22 Claims
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1. A cartridge filter, comprising:
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at least one filter media having a bottom surface and a top surface generally opposite the bottom surface; an outlet tube extending from the bottom surface into the filter toward the top surface; and at least one seal positioned in the outlet tube in closer proximity to the top surface than to the bottom surface for sealing the outlet tube to a standpipe of a fluid filter tank wherein the standpipe is coupled to the outlet tube by the at least one seal; and a fluid collection tube that is located between the top surface and the seal for collecting fluids having passed through the at least one filter media, wherein the fluid collection tube includes at least one aperture for receiving fluids having passed through the at least one filter media, and wherein the at least one aperture has a cross-sectional area that is greater than a cross-sectional area of a diameter of the standpipe. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A fluid filter system, comprising:
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a tank having an opening for receiving a cartridge filter; a cover that is configured to attach to the tank sealing the opening;
p1 a standpipe extending from a bottom surface of the tank toward the cover; anda cartridge filter contained in an inner cavity of the tank, comprising; at least one filter media having a bottom surface and a top surface generally opposite the bottom surface; an outlet tube extending from the bottom surface into the filter toward the top surface; and at least one seal that is positioned in the outlet tube in closer proximity to the top surface than to the bottom surface and in contact with the standpipe of a fluid filter tank; and a fluid collection tube between the top surface and the seal for collecting fluids having passed through the at least one filter media. wherein the fluid collection tube includes at least one aperture for receiving fluids having passed through the at least one filter media, wherein the at least one aperture has a cross-sectional area that is greater than a cross-sectional area a diameter of the standpipe. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A cartridge filter that is configured to be inserted into a fluid tank, having a top comprising:
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a core that is positioned along a longitudinal axis of the cartridge filter, the core extending from a bottom surface of the cartridge filter toward a top surface of the cartridge filter, wherein the core receives a standpipe that is located within the fluid tank; at least one filter media that is positioned between the bottom surface and the top surface of the cartridge filter, wherein the at least one filter media is positioned around the core; and at least one seal that is positioned between the core and the standpipe at a location between a midpoint of the standpipe and an open end of the standpipe, wherein the at least one seal is proximate to the top of the fluid tank, wherein an upper portion of the core, located above an uppermost of the at least one seal, is configured to permit fluid that has passed through the at least one filter media to be fluidly coupled to an inner portion the standpipe, and wherein the entire portion of the core, located below a lowermost of the at least one seal, is not configured to fluidly couple to the inner portion of the standpipe. - View Dependent Claims (17, 18)
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19. A fluid filter system, comprising:
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a tank having an opening for receiving a cartridge filter; a cover that is configured to attach to the opening of the tank; a standpipe located within the tank and extending from a bottom surface of the tank toward the opening of the tank; and a cartridge filter that is configured to be inserted into the tank, comprising; a core that is positioned along a longitudinal axis of the cartridge filter, the core extending from a bottom surface of the cartridge filter toward a top surface of the filter cartridge, wherein the core is received the standpipe; at least one filter media that is positioned between the bottom surface and the top surface of the the cartridge filter, wherein the at least one filter media is positioned around the core; and at least one seal that is positioned between the core and the standpipe at a location between a midpoint of the standpipe and an open end of the standpipe, wherein the at least one seal is proximate to the opening of the tank, wherein an upper portion of the core, located above an uppermost of the at least one seal, is configured to permit fluid that has passed through the at least one filter media to be fluidly coupled to an inner portion the standpipe, and wherein the entire portion of the core, located below a lowermost of the at least one seal, is not configured to fluidly couple to the inner portion of the standpipe. - View Dependent Claims (20, 21, 22)
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Specification