 Flexible tube pump |
| The pump assembly 10 (FIGS. 1 and 2), embodying the invention, comprises a motor unit 11 and a ... |
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| Breathing bag assembly |
| We claim: 1. A breathing bag assembly for closed-circuit breathing apparatus, comprising a rigid ... |
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| Sterile connection system using flexible container |
| In accordance with the invention, a sterile connection system is provided for continuous ambulatory ... |
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| Oil reconditioning device |
| This invention provides an improved oil reconditioning device which includes a housing, an inlet at ... |
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| Closure device for specimen-containers such as test tubes |
| OF THE INVENTION The object of the invention is to provide a simple closure device which is free ... |
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| Deairing and recirculation systems for dialysis machines |
| There is provided by this invention a negative-pressure-and-deairing system for use in a bedside ... |
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| Hemodialysis apparatus |
| OF PREFERRED EXAMPLE EMBODIMENTS AND OF THE BEST MODE OF THE INVENTION The relevant portion of the ... |
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| Water surface flotage suctioning apparatus |
| The present invention provides a water surface flotage suctioning apparatus which has a main body, ... |
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| Liquid metering pump |
| What is claimed is: 1. A pump for metering controllable quantities of liquid comprising: A. a body ... |
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| Fluid product reservoir and method |
| The embodiments of the invention in which an exclusive property or privilege is claimed are defined ... |
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Multi-stage water filter system
| Details |
Inventors: Bailey, J. Rushton; Reinhard, William; Frazier, Stephen E.;
Assignee: Dart Industries Inc. (Orlando, FL)
Primary Examiner: Lithgow; Thomas M.
Assistant Examiner:
Attorney, Agent or Firm: Ross; Taylor J.
A water filter system having a housing for a plurality of serial-flow connected filter cartridges with distinct filtering characteristic related to the direction of flow of water being filtered. Each filter cartridge has a membrane wrapped activated carbon filter body. One of the filter bodies includes a heavy metal bacteriostat. The cartridges are each releasably retained in a manifold by keyed connectors including rotatable locking rings. Each cartridge having a distinct filtering characteristic includes a keying structure to ensure that the cartridge can only be connected to the manifold for placement in proper serial-flow relationship in the system. The filter system includes a spent filter cartridge indicator. The filter system is particularly suited for countertop placement and connection to a faucet. |
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DETAILED DESCRIPTION It is therefore a primary object of the present invention to provide a water filter system having a plurality of filters preferably having distinct filtering characteristics which filters are placed in series, and/or in parallel in particular flow relationship, to reduce and/or eliminate metal contaminants, nitrate and nitrate ions, radioactive trace organic chemicals normally referred to as volatile organic compounds (VOC's), bad odors, taste and color, as well as bacteria, such as E coli and cysts such as Giardia and Cryptosporidium.
Another object of the invention is to provide a filter system particularly suited for final filtration of "tap" water, the quality of which is less than fully satisfactory.
A further object of the invention is to provide a filter system particularly suited for countertop placement and attachment to an outlet of a faucet wherein periodic replacement of the filter cartridges is simplified while ensuring that the filter cartridges may only be placed in proper serial-flow, and/or parallel flow, relationship in the multi-stage water filter system.
It is yet another object of the present invention to provide filter cartridges having distinct filtering characteristics whereby when utilized in serial-flow relationship provide multi-stage filtration of water, which filter cartridges include microporous carbon, or ceramic, bodies encased with at least one membrane so as to provide capture of particles, and/or microorganisms, as small as about 0.
4 .
mu.
m.
In general, the present invention contemplates a water filter system having a base provided with a manifold for fail safe simplified keyed error proof installation of, and replacement of, a plurality of filter cartridges having distinct filtering characteristics in their proper serial-flow relationship.
Securement of the filters in this manner is accomplished by a keyed, connector means configured so as to only permit connection of a given filter cartridge in its proper flow position in its related flow manifold
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Liquid Purification 
