Water filter cartridge and head having keyed engagement

The water filter assembly addresses seal leaks and alignment issues by using a bypass disk and key member for leak-proof cartridge replacement and cleaning, improving the reliability and ease of maintenance.

AU2021203580B2Pending Publication Date: 2026-07-16CULLIGAN INTERNATIONAL COMPANY
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Patent Information

Application Number
AU2021203580
Authority / Receiving Office
AU · AU
Patent Type
Applications
Current Assignee / Owner
Priority Date
2020-06-05
Filing Date
2021-06-01
Publication Date
2026-07-16
Estimated Expiration
2041-06-01

AI Technical Summary

Technical Problem

Conventional water filter systems face issues with seal deterioration leading to leaks, improper cartridge alignment due to awkward positioning in tight spaces, and breakage of key and lock features, necessitating an improved design for easy alignment and leak prevention during cartridge replacement.

Method used

A water filter assembly with a filter head and cartridge featuring a bypass disk and elongate key member for alignment, check valves to prevent leaks, and a bypass conduit for seamless replacement, eliminating the need for a separate shut-off valve and allowing easy cleaning.

Benefits of technology

Ensures proper alignment and leak-free cartridge replacement, facilitating easy cleaning and maintenance without additional components, enhancing the reliability and usability of the filter system.

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Abstract

14 56 54 60 16 12 30 42 82 58 12 42 16 14 5450 52 58 34 44 46 4038 10 10 52 80 66 70 64 68 7860 62 3630 32 72 82 42 12 42 16 72 60 14 54 52 50 82 34 44 46 38 40 10 66 70 64 68 78 80 36 30 32 58 FI G . 1 FI G . 2 FI G . 3 1 / 3 20 21 20 35 80 0 1 Ju n 20 21 2021203580 01 Jun 2021 16 54 30 56 10 10 1 / 3 46 38 32 44 44 34 40 30 40 12 72 36 72 42 42 16 TO 82 10 58 52 50 50 60 58 14 14 54 54 80 64 68 78 80 66 68 78 70 70 66 FIG. 2 FIG. 3
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Citation Information

Patent Citations

  • Liquid filtration systems, components, and methods

    US20140202944A1

  • Water treatment cartridge with sealable inlet and outlet to prevent leaks

    US9868081B1