Water Filter Free Patent Search

  • Microbiological water filter

    Water Filter Abstract: A method and device for the filtration and/or purification of fluids water or other solutions containing microbiological contaminants, such as fluids containing including bacteria and/or viruses, where the fluid water is passed...

  • Drinking water filter

    Water Filter Abstract: A water filter used for treating tap water. The water filter provides a consumer with protection against major water contaminants found in municipal water supplies. The filter includes a cylindrical filter cartridge with a numb...

  • Modular multi-stage water filter apparatus

    Water Filter Abstract: A multi-stage, modular water filter apparatus having at least first and second filter housings engageable with one and other, and each being engageable with a water inlet member, a water outlet member and a fluid filter cartrid...

  • Water filter usage monitoring apparatus

    Water Filter Abstract: As apparatus for monitoring usage of a replaceable water filter is adapted to determine the extent of filter usage and indicate the need for filter replacement. It includes elements for processing the flow of water over time to...

  • Non-chemical scale prevention and chlorine removal water filter

    Water Filter Abstract: A water filtration system for preventing scale and removing chlorine includes a vertically oriented elongated pressure vessel 11 having a fitting at the upper end thereof. The fitting includes a passage 30 for directing water i...

  • Water filter carafe

    Water Filter Abstract: A water filtering carafe comprising a raw water reservoir, a filtered water reservoir, and a gravity-flow cyst reduction water filter cartridge for filtering raw water passing from the raw into the filtered water reservoir, the...

  • Water filter spray nozzle cleaning system

    Water Filter Abstract: Methods and apparatus for generating a small, maneuverable stream of filtered fluid without benefit of a pump or electrical power are disclosed. According to one aspect of the present invention, a spray nozzle apparatus for dis...

  • Water filter replacement indicator

    Water Filter Abstract: A water filter replacement indicator for apparatus that utilizes a filter for purifying water which has a power supply (20) and an auxiliary power supply (22). A timer (24) receives electrical energy from one of the power suppl...

  • Water filter cartridge replacement system for a refrigerator

    Water Filter Abstract: A water filtering system for a refrigerator determines a need for a filter change by timing the period of actuation of at least one valve used to regulate the flow of filtered water to both a water dispenser and an ice maker. B...

  • Carbon block water filter

    Water Filter Abstract: An activated carbon block filter including a unique bonded carbon mixture. The carbon mixture preferably includes a mean particle diameter in the range of about 60 microns to about 80 microns and a particle size distribution ha...

  • Water filter monitoring and indicating system

    Water Filter Abstract: A low cost method and apparatus for indicating when to replace a water filter in a water and ice delivery system for a refrigerator. The invention uses a low cost microprocessor and senses the operational condition of an ice ma...

  • Waste water filter having multiple wall filter elements and outlet protection

    Water Filter Abstract: A waste water filter comprises a shield comprising a vertical peripheral wall defining a shield interior. The shield further includes an inlet for the entry of unfiltered wastewater into the shield interior. A shield filter ele...

  • Warm/cold double-circulation water filter system and swimming pool arrangement

    Water Filter Abstract: A warm/cold double-circulation water filter system and swimming pool arrangement includes a swimming pool separated into two pools, each pool having a water outlet and a plurality of water inlets, a double-circulation water fil...

  • Water filter cartridge having a proportional flow feeder

    Water Filter Abstract: More specifically, the present invention features an improved feeder tube for a water treatment cartridge that provides treatment by a solid compound for a slipstream of untreated water flowing through the cartridge. The feeder...

  • Apparatus for cleaning a swimming pool water filter

    Water Filter Abstract: A water pump normally used in a system circulating pool water through a filter cartridge 26 is used to clean the filter cartridge by coupling a 3-way or inline valve 32 and a tee 36 in the piping 12 between the pump 16 and the...

  • Septic tank waste water filter including a reservoir for filtered waste water

    Water Filter Abstract: The present invention is a waste water filter for use in a septic tank. The waste water filter includes a shield comprising a vertical peripheral wall substantially impervious to the passage of unfiltered waste water. The shiel...

  • Water filter

    Water Filter Abstract: A water filter includes an egg-shaped housing formed from a lower shell and an upper shell. The lower shell is divided into an intake chamber and an outflow chamber. A filter or membrane is placed between the upper and lower sh...

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