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US 5,540,848 AGranted
Filter retainer for water purification unit
AssigneeVortex Corporation
InventorRolf Engelhard
Life of this patent
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AssigneeVortex Corporation
InventorRolf Engelhard
Estimating the term…
Water to be purified swirls about a source of ultraviolet radiation to kill any microorganisms contained therein and flows through a carbon filter cartridge mounted about the ultraviolet source to remove any chlorine and particulate matter. The outflow from the carbon filter is again subjected to ultraviolet radiation to kill any microorganisms entrained in the water emanating from the carbon filter. An ozone generator may be incorporated to entrain ozone with the inflowing water to enhance killing of any microorganisms present and to oxidize any undesirable compounds. The cartridge filter has its annular support member at one end disposed adjacent a first annular ridge to establish an annular seal between the support member and the first annular ridge. An axially moveable disk includes a second annular ridge disposed adjacent the annular support member at the other end of the cartridge filter to establish an annular seal therebetween. A spring washer urges the disk toward the cartridge filter and urges the cartridge filter toward the first annular ridge to maintain the respective annular seals despite aging or degradation of the annular support members of the cartridge filter.
In a water purification unit having a source of UV radiation for killing microorganisms present in the water to be purified, a cartridge filter for filtering the water to remove particulate matter from the water to be purified, a compartment for irradiating unfiltered water with UV radiation from the UV source, passageways for channeling the irradiated unfiltered water through the cartridge filter, and a space for irradiating the filtered water with UV radiation from the UV source, the improvement comprising in combination:
Apparatus for mounting and sealing the opposed ends of a cartridge filter within a water purification unit which purifies the water by killing microorganisms in both filtered and unfiltered water with radiation from an internally mounted UV lamp and filters entrained matter from UV irradiated water with the cartridge filter, said apparatus comprising in combination:
A method for mounting and sealing the opposed ends of a cartridge filter within a water purification unit which purifies water by killing microorganisms in both filtered and unfiltered water with radiation from an internally mounted UV lamp and filters entrained matter from UV irradiated water with the cartridge filter, said method comprising the steps of:
Dependencies are inferred from the claim text.