Filter cartridge
First Claim
Patent Images
1. A filter cartridge for mating with a two stage manifold comprising:
- a filter head having a top end with a two stage, coaxial cylindrical recess, said two stage recess including a first stage recess situated towards the top end of said filter head and extending axially away from said top end to form a bottom first stage recess floor, and a second stage recess situated at said first stage recess bottom floor, and extending axially away from said bottom floor and said top end, said second stage recess having a smaller diameter than said first stage recess;
a housing secured by a water-tight bond to said filter head;
a filter media within said housing and in fluid communication with said filter head;
a seal insertably secured within said second stage recess, said seal having a base seal portion forming a circumferential seal with a cavity wall of said second stage recess, and an adjoining seal sidewall structure extending axially upwards from said base seal portion toward said first stage recess bottom floor.
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Abstract
The present invention presents a removably secured seal for forming a second stage water-tight seal within a two stage cavity filter head assembly for mating with a complementary manifold having cylindrical (male) bayonet ports. The seal includes a base circumferential seal having a center aperture and sidewall members extending axially upwards from the base seal; the sidewall members being insertable within cavities or slots formed in the second stage recess cylindrical cavity sidewall.
27 Citations
19 Claims
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1. A filter cartridge for mating with a two stage manifold comprising:
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a filter head having a top end with a two stage, coaxial cylindrical recess, said two stage recess including a first stage recess situated towards the top end of said filter head and extending axially away from said top end to form a bottom first stage recess floor, and a second stage recess situated at said first stage recess bottom floor, and extending axially away from said bottom floor and said top end, said second stage recess having a smaller diameter than said first stage recess; a housing secured by a water-tight bond to said filter head; a filter media within said housing and in fluid communication with said filter head; a seal insertably secured within said second stage recess, said seal having a base seal portion forming a circumferential seal with a cavity wall of said second stage recess, and an adjoining seal sidewall structure extending axially upwards from said base seal portion toward said first stage recess bottom floor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A filter cartridge comprising:
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a housing having an open top end, and a closed bottom end; a filter media within said housing, having an open end cap at a first end and a close end cap at a second end; a filter head having a bottom end secured to said housing top end, and a filter head top end having a two stage cylindrical recess including a first stage recess having an open top end, a floor, and a first diameter, and a second stage recess having a second diameter, said first diameter greater than said second diameter, wherein said first and second stage recesses are coaxial, said second stage recess beginning at said first stage recess floor and extending axially downwards toward said filter media, said filter head top end adapted to receive complementary bayonet ports from a mating manifold; and a resilient seal insertably secured within said second stage recess of said filter head, including; a base circumferential seal; and a plurality of elongated members attached to, and extending axially from, said base circumferential seal; said resilient seal secured within said second stage recess by inserting said elongated members within slots formed within a cavity sidewall of said second stage recess. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A filter head assembly for a filter cartridge comprising:
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a filter head for directly mating to a manifold, said filter head including a two stage cavity having a first recess stage and a second recess stage, said second recess stage coaxial with, and internal to, said first recess stage and having a top surface coincident with a bottom surface of said first recess stage; and a resilient seal including a disc-shaped base seal having a center aperture and a plurality of elongated members attached to, or integral with, said base seal, extending perpendicularly from said base seal in an axial direction, and insertably attached to a cavity sidewall of said filter head second recess stage. - View Dependent Claims (18, 19)
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Specification