WO1982000256A1 - Water purification system - Google Patents

Water purification system Download PDF

Info

Publication number
WO1982000256A1
WO1982000256A1 PCT/US1981/000965 US8100965W WO8200256A1 WO 1982000256 A1 WO1982000256 A1 WO 1982000256A1 US 8100965 W US8100965 W US 8100965W WO 8200256 A1 WO8200256 A1 WO 8200256A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
section containing
inlet
tube
contaminated water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1981/000965
Other languages
French (fr)
Inventor
W Gartner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to BR8108705A priority Critical patent/BR8108705A/en
Priority to DE8181902148T priority patent/DE3169976D1/en
Priority to AT81902148T priority patent/ATE12734T1/en
Priority to AU74536/81A priority patent/AU7453681A/en
Publication of WO1982000256A1 publication Critical patent/WO1982000256A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C02F1/766—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens by means of halogens other than chlorine or of halogenated compounds containing halogen other than chlorine
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/18—Drinking straws or the like
    • A47G21/188—Drinking straws or the like with filters to remove impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/002—Processes for the treatment of water whereby the filtration technique is of importance using small portable filters for producing potable water, e.g. personal travel or emergency equipment, survival kits, combat gear
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/208—Off-grid powered water treatment

Definitions

  • This invention relates to water purification systems and, in particular, to a personal portable water purifier.
  • an object of the subject invention is a portable water purifier with a product that is pleasant to the taste.
  • Another object of the subject invention is a water purifier with a capacity to purify and disinfect the water greater than the filtering capacity of the purifier.
  • Still another object of the subject invention is a portable water purifier which may be stored and periodically used for periods up to a year while retaining its effectiveness.
  • an elongated tube which may be capped at both the inlet and outlet ends, with filter and purification materials intermediate.
  • Bactericidal resin particles purify the water while a granular absorbent material, such as activated carbon and the like, adsorbs the other impurities which produce odor and taste.
  • Filter media within the tube removes substantially all suspended particle matter in the water, resulting in clear, purified water emanating from the tube.
  • FIGURE 1 is a perspective view of one embodiment of the subject invention
  • FIGURE 2 is a cross-sectional view taken along lines 2-2 of FIGURE 1 showing the internal components of the water purifier of the subject invention.
  • the water purification apparatus comprises a long, slender tube which may be formed of either glass, plastic or metal as desired.
  • the tube is much in the nature of a drinking straw having a diameter of such size for insertion into a user's mouth for applying suction.
  • the tubing is preferably formed of plastic allowing it to be formed of inexpensive material.
  • the plastic may be transparent polycarbonate in order to provide a visual sighting of the contents of the tube. In this manner, through change in color and other means of indication, it would be possible to provide a visual reference of the effectiveness of the purifying and filtration agents in the tube 25.
  • the tube 25 has an inlet 12 and an outlet 18.
  • the inlet 12 has perforations 21 which allow the flow of water into the tube 25 while retailing the filtration material 13 inside the tube.
  • perforations 22 allow the flow of purified water from the tube while retaining the filtration material 17 inside.
  • Caps 20 and 19 are attached by straps 27 and 26, respectively, to the tube ends 12 and 18 and. may be used for preventing leakage when the purifier of the subject invention is not in use, while additionally keeping the mouthpiece 18 clean.
  • the inlet cap 12 has perforations 21 to allow the easy flow of water into the tube 25.
  • Adjacent inlet cap 12, inside the tube, is a primary filter material such 'as polyester filter fiber.
  • the purifying medium 14 Adjacent the primary filter material 13 is purifying medium 14.
  • the purifying medium 14 is an iodinated cation exchange resin capable of purifying and disinfecting the incoming water, thereby instantaneously killing harmful bacteria as the water comes into contact with the resin.
  • an appropriate purifying medium is generally known as triiodide resin.
  • Other bactericidal mediums may be used as desired.
  • Adjacent the purifying resin 14 is a secondary or intermediate filtration area containing filtration material 15 similar to the filtration material 13. If desired, filtration material 15 may provide a finer mesh size for screening out smaller particles.
  • Adjacent the second filtration area 15 is a granular adsorbent material having a large surface area, such as activated carbon and the like, which can adsorb impurities, organic liquids, gases, tastes and. odors, making the water palatable. As is known, certain other hydrocarbon material which may pass through the purifying material 14 will be adsorbed onto the activated carbon.
  • a final segment of filter media 17 removes substantially all the remaining particulata matter prior to .the exit of the now-cleansed water through end cavity 18. As with tne intermediate filter material, a finer mesh size than the primary filter material may be used.
  • the purifying and adsorbing material results in a crystal-clear, bacteria and virus-free, good tasting water, when used with a non-saline source.
  • water containing 200,000-300,000 escherichia-coli microorganisms per milliliter has been run through the water purification unit of the subject invention and the effluent from the unit contains less than one microorganism per 100 milliliters.
  • the subject invention has been tested with raw sewage, river water, urine, etc., and in all cases, a clear, colorless, good tasting, bacteria and virus-free water was the final product.
  • the end caps 19 and 20 are removed from opposing end portions 12 and 18, respectively, and the inlet portion 12 is inserted into the source of water, such as a pond or river.
  • the user places his mouth over the mouthpiece 18 and, much as in the nature of a straw, sucks the water inward, past the filtering and purifying media within, into his mouth. Since a majority of the tube is filled with a purifying medium 14 and the adsorbent medium 15, the useful life of the subject invention is determined principally by the length of time and periods of use required for the inlet filter 13 to become clogged.
  • the inlet filter 13 will be clogged long before the purifying capacity of the tube of the subject invention is exhausted. With the clogging of the inlet filter 13, there can be no passage of water through the tube 25 and the user will realize that the usefulness of the tube of the subject invention has been spent and should be discarded at that time. Because of the inexpensive nature of the subject invention, it is disposable in nature and, therefore, may then be tossed into the nearest waste receptacle.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

Epurateur d'eau portatif (10) comprenant un tuyau allonge (25) possedant un agent filtrant (13, 15, 17), un agent bactericide (14) et un materiau adsorbant (16) a l'interieur du tuyau. L'utilisateur exerce une suction par la bouche pour aspirer de l'eau au travers du tuyau de maniere a filtrer le materiau etranger et epurer l'eau avant l'utilisation.Portable water purifier (10) comprising an elongated hose (25) having a filtering agent (13, 15, 17), a bactericidal agent (14) and an adsorbent material (16) inside the hose. The user exerts a suction by mouth to draw water through the pipe so as to filter the foreign material and purify the water before use.

Description

WATER PURIFICATION SYSTEM
DESCRIPTION
Technical Field
This invention relates to water purification systems and, in particular, to a personal portable water purifier.
Background of the Prior Art
As the environment becomes more polluted, and lakes, rivers and streams become endless cesspools, a camper or hunter soon realizes the necessity for carrying his own personal supply of water to avoid the necessity of exposing himself to the dangers of drinking polluted water. Various practices have become commonplace in searching for drinking water, including boiling the water prior, to drinking, and dissolving iodoform tablets into the water. Boiling water requires time and equipment, neither of which may be available when the water is required. In addition, the water tastes flat as a result of the boiling. The iodoform tablets produce an undesirable taste and have traditionally been unpopular for that reason. Other water purification devices have been either too large or too heavy or have rendered the water quite distasteful. Some apparatus have limited capacity and can allow the passage of water even when its purification capacity is exhausted, and allowing a user to drink contaminated water without knowledge of that fact.
Summary of the Invention Therefore, an object of the subject invention is a portable water purifier with a product that is pleasant to the taste.
Another object of the subject invention is a water purifier with a capacity to purify and disinfect the water greater than the filtering capacity of the purifier.
Still another object of the subject invention is a portable water purifier which may be stored and periodically used for periods up to a year while retaining its effectiveness.
These and other objects are attained in accordance with the present invention wherein there is provided an elongated tube which may be capped at both the inlet and outlet ends, with filter and purification materials intermediate. Bactericidal resin particles purify the water while a granular absorbent material, such as activated carbon and the like, adsorbs the other impurities which produce odor and taste. Filter media within the tube removes substantially all suspended particle matter in the water, resulting in clear, purified water emanating from the tube.
Brief Description of Several Views of Drawings
Further objects of the invention together with additional features contributing thereto and advantages accruing therfrom will be apparent from the following description of one embodiment of the invention when read in conjunction with the accompanying drawings wherein:
FIGURE 1 is a perspective view of one embodiment of the subject invention; FIGURE 2 is a cross-sectional view taken along lines 2-2 of FIGURE 1 showing the internal components of the water purifier of the subject invention.
Detailed Description
Referring now to FIGURE 1, there is shown the water purification apparatus 10 comprising one embodiment of the invention. The water purification apparatus comprises a long, slender tube which may be formed of either glass, plastic or metal as desired. The tube is much in the nature of a drinking straw having a diameter of such size for insertion into a user's mouth for applying suction. As shown in FIGURE 2, the tubing is preferably formed of plastic allowing it to be formed of inexpensive material. If desired, the plastic may be transparent polycarbonate in order to provide a visual sighting of the contents of the tube. In this manner, through change in color and other means of indication, it would be possible to provide a visual reference of the effectiveness of the purifying and filtration agents in the tube 25.
As shown in FIGURE 2, the tube 25 has an inlet 12 and an outlet 18. The inlet 12 has perforations 21 which allow the flow of water into the tube 25 while retailing the filtration material 13 inside the tube. Similarly, perforations 22 allow the flow of purified water from the tube while retaining the filtration material 17 inside. Caps 20 and 19 are attached by straps 27 and 26, respectively, to the tube ends 12 and 18 and. may be used for preventing leakage when the purifier of the subject invention is not in use, while additionally keeping the mouthpiece 18 clean. As stated, the inlet cap 12 has perforations 21 to allow the easy flow of water into the tube 25. Adjacent inlet cap 12, inside the tube, is a primary filter material such 'as polyester filter fiber. which removes much of the suspended particlate matter in the incoming water. Other filtering agents or materials may be used as found appropriate. Adjacent the primary filter material 13 is purifying medium 14. Preferably, the purifying medium 14 is an iodinated cation exchange resin capable of purifying and disinfecting the incoming water, thereby instantaneously killing harmful bacteria as the water comes into contact with the resin. Commercially, an appropriate purifying medium is generally known as triiodide resin. Other bactericidal mediums may be used as desired.
Adjacent the purifying resin 14 is a secondary or intermediate filtration area containing filtration material 15 similar to the filtration material 13. If desired, filtration material 15 may provide a finer mesh size for screening out smaller particles.
Adjacent the second filtration area 15 is a granular adsorbent material having a large surface area, such as activated carbon and the like, which can adsorb impurities, organic liquids, gases, tastes and. odors, making the water palatable. As is known, certain other hydrocarbon material which may pass through the purifying material 14 will be adsorbed onto the activated carbon. A final segment of filter media 17 removes substantially all the remaining particulata matter prior to .the exit of the now-cleansed water through end cavity 18. As with tne intermediate filter material, a finer mesh size than the primary filter material may be used. On passing through each of the filter areas and, the purifying and adsorbing material results in a crystal-clear, bacteria and virus-free, good tasting water, when used with a non-saline source. According to tests required under Federal Law, water containing 200,000-300,000 escherichia-coli microorganisms per milliliter has been run through the water purification unit of the subject invention and the effluent from the unit contains less than one microorganism per 100 milliliters. In addition, the subject invention has been tested with raw sewage, river water, urine, etc., and in all cases, a clear, colorless, good tasting, bacteria and virus-free water was the final product.
In the use of the subject invention, the end caps 19 and 20 are removed from opposing end portions 12 and 18, respectively, and the inlet portion 12 is inserted into the source of water, such as a pond or river. The user places his mouth over the mouthpiece 18 and, much as in the nature of a straw, sucks the water inward, past the filtering and purifying media within, into his mouth. Since a majority of the tube is filled with a purifying medium 14 and the adsorbent medium 15, the useful life of the subject invention is determined principally by the length of time and periods of use required for the inlet filter 13 to become clogged. Thus, unless contaminated water with relatively little suspended particle matter is a constant source for purification through the subject invention, the inlet filter 13 will be clogged long before the purifying capacity of the tube of the subject invention is exhausted. With the clogging of the inlet filter 13, there can be no passage of water through the tube 25 and the user will realize that the usefulness of the tube of the subject invention has been spent and should be discarded at that time. Because of the inexpensive nature of the subject invention, it is disposable in nature and, therefore, may then be tossed into the nearest waste receptacle.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out the invention, but that the invention will include all embodiments falling within the scope of the appended Claims.

Claims

1. A portable water purifying apparatus for treating contaminated water to provide drinking water solely from the passage of said contaminated water through said apparatus comprising an elongated tube having a diameter of a size as to allow suction to be applied by a .user's mouth, said tube having an interior conduit connecting an upper outlet and a lower inlet, said conduit having successive adjacent sections from said inlet and said outlet, a first section containing a primary filter means for removing particulate matter, a second section containing a halogenated ion exchange resin for removing harmful bacteria, viruses and the like, a third section containing a secondary filtration material for removing additional particulate material, a fourth section containing activated carbon granules for removing undesirable odors, tastes and hydrocarbons, and a fifth section containing a secondary filter means for removing substantially all remaining particulate matter, whereby on the application of said suction whan said lower inlet is inserted into a source of contaminated water, said contaminated water is treated to permit the ingestion of water directed from said upper outlet.
2. The water purifying apparatus of Claim 1, further including cap means on each of said inlet and outlet for sealing said apparatus when not in use.
PCT/US1981/000965 1980-07-18 1981-07-17 Water purification system Ceased WO1982000256A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BR8108705A BR8108705A (en) 1980-07-18 1981-07-17 AQUA PURIFICATION SYSTEM
DE8181902148T DE3169976D1 (en) 1980-07-18 1981-07-17 Water purification system
AT81902148T ATE12734T1 (en) 1980-07-18 1981-07-17 WATER PURIFICATION SYSTEM.
AU74536/81A AU7453681A (en) 1980-07-18 1981-07-17 Water purification system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US170023800718 1980-07-18
US06/170,023 US4298475A (en) 1980-07-18 1980-07-18 Water purification system

Publications (1)

Publication Number Publication Date
WO1982000256A1 true WO1982000256A1 (en) 1982-02-04

Family

ID=22618217

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1981/000965 Ceased WO1982000256A1 (en) 1980-07-18 1981-07-17 Water purification system

Country Status (15)

Country Link
US (1) US4298475A (en)
EP (1) EP0056054B1 (en)
JP (2) JPS57501221A (en)
BR (1) BR8108705A (en)
CA (1) CA1153835A (en)
ES (1) ES268150Y (en)
GB (1) GB2080278B (en)
IL (1) IL63353A (en)
IN (1) IN155416B (en)
IT (1) IT1142851B (en)
PH (1) PH17774A (en)
PL (1) PL232263A1 (en)
WO (1) WO1982000256A1 (en)
YU (1) YU178981A (en)
ZA (1) ZA814703B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0243990A1 (en) * 1986-03-27 1987-11-04 Duphar International Research B.V Device for inward suction of liquid
WO2009021197A3 (en) * 2007-08-08 2009-05-22 Paul W O'brien Portable drinking water purification device
WO2010045502A3 (en) * 2008-10-15 2010-08-12 O'brien Paul W Protable drinking water purification device
WO2010138462A3 (en) * 2009-05-24 2011-04-07 O'brien Paul W Water filtering and purification method and adapter kit
US8394268B2 (en) 2008-08-08 2013-03-12 Miracle Straw Corporation, Inc. Double chamber water purification device
US8425771B2 (en) 2009-07-24 2013-04-23 Miracle Straw Corporation, Inc. Double chamber water purification device

Families Citing this family (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382862A (en) * 1981-05-08 1983-05-10 Illinois Water Treatment Company Bacteria-removing cartridge and preparatory process
US4505310A (en) * 1983-01-31 1985-03-19 Wesley Schneider Liquid storage and delivery system for protective mask
GB2146980A (en) * 1983-09-22 1985-05-01 David Stanley Evans Combined water purifier
US4594392A (en) * 1984-02-13 1986-06-10 Ametek, Inc. - Plymouth Products Division Synergistically stabilized mixed form halogenated and/or interhalogenated resins for disinfecting water
US4578187A (en) * 1984-06-29 1986-03-25 Alhaeuser Erich Ion exchange apparatus to improve the quality of potable water
US4712594A (en) * 1984-09-26 1987-12-15 Wesley Schneider Liquid storage and delivery system for protective mask
GB8526976D0 (en) * 1985-11-01 1985-12-04 Hamblin M J Orally operable water filters
US5211973A (en) * 1986-01-24 1993-05-18 Innova/Pure Water, Inc. Water treatment apparatus
IL79090A0 (en) * 1986-06-11 1986-09-30 Noach Amchat Portable water purifier
US4769143A (en) * 1987-02-17 1988-09-06 Or-Tsurim Device for purifying water
IL87157A0 (en) * 1987-07-31 1988-12-30 Purewater Sciences Int Inc Filter for liquid purification
US4816161A (en) * 1987-11-27 1989-03-28 The United States Of America As Represented By The Secretary Of Agriculture Isopotential available ion extractor
US5104649A (en) * 1988-05-11 1992-04-14 Monsanto Company Surface-functionalized biocidal polymers
US4913808A (en) * 1988-10-03 1990-04-03 Maqsood Haque Subcompact interchangeable cartridge drinking water purification system
DE68927320T2 (en) * 1988-12-30 1997-02-20 Purotech Ltd Water purification system
US4999109A (en) * 1989-08-28 1991-03-12 Sabre Reza A Filtering lid with separate inlet and outlet compartments
AU6432690A (en) * 1989-09-05 1991-04-08 Global Star Products Limited Filtered drinking straw
US5156335A (en) * 1989-09-05 1992-10-20 Smith Michael L Filtered drinking straw
US5045195A (en) * 1990-01-16 1991-09-03 Accuventure, Inc. Personal drinking water purification tube
US4978449A (en) * 1990-02-12 1990-12-18 Devine Frank M Water purifier with air-passing retainer above water inlet
US5268093A (en) * 1990-04-05 1993-12-07 Recovery Engineering, Inc. Portable water purification system
US4995976A (en) * 1990-05-31 1991-02-26 Water Technologies Corporation Water purification straw
US5106500A (en) * 1990-06-20 1992-04-21 Recovery Engineering, Inc. Portable water purification system including a filter cleaning mechanism
US5126044A (en) * 1990-09-27 1992-06-30 Magnusson Jan H Iodine resin/carbon water purification system
US5076922A (en) * 1990-10-12 1991-12-31 Wilton Industries, Inc. Water-filtration apparatus
US5366642A (en) * 1991-04-09 1994-11-22 Kpa, Incorporated Compact water filtration and purification pump
US5580447A (en) * 1991-04-09 1996-12-03 Sweetwater, Inc. Biocide filter
US5534145A (en) * 1991-04-09 1996-07-09 Sweetwater, Inc. Compact water filtration pump
US5431816A (en) * 1991-04-09 1995-07-11 Sweetwater, Inc. Prefilter for a water purification pump
US5433848A (en) * 1991-04-09 1995-07-18 Kpa, Inc. Water filtration pump with disposable filter cartridges
US5273649A (en) * 1991-10-07 1993-12-28 Magnusson Jan H Personal water purification systems
US6680050B1 (en) 1992-09-16 2004-01-20 Triosyn Holdings, Inc. Iodine/resin disinfectant and a procedure for the preparation thereof
US7261879B2 (en) * 1992-09-16 2007-08-28 Triosyn Holding Inc. Iodinated anion exchange resin and process for preparing same
ATE169798T1 (en) * 1992-09-16 1998-09-15 Triosyn Corp DISINFECTING IODINE RESIN AND METHOD FOR THE PRODUCTION THEREOF
WO1994025399A1 (en) * 1993-04-27 1994-11-10 Yasuyuki Yamamoto Portable water purifier
US5456831A (en) * 1993-05-24 1995-10-10 Sullivan; John L. Portable water filtering device
IL105905A (en) * 1993-06-03 2006-04-10 Moshe Frommer Device and process for purification of water
US6071415A (en) * 1993-06-03 2000-06-06 Purotech International Inc. Water purification system and removal of halides
US5518613A (en) * 1994-12-14 1996-05-21 Harrison First International, Inc. Portable water purifying and drinking device
KR0182567B1 (en) * 1996-04-02 1999-04-15 김광호 Water purifier
US5688588A (en) * 1996-04-12 1997-11-18 Kimberly-Clark Worldwide, Inc. Water purification device
US6224764B1 (en) 1996-08-19 2001-05-01 R-Amtech International, Inc. Apparatus for purifying and disinfecting water
US5817263A (en) * 1996-08-30 1998-10-06 Amway Corporation End flow filter and method of making same
GB9618378D0 (en) * 1996-09-04 1996-10-16 Kodak Ltd Apparatus and method for inhibiting microbial growth in an aqueous medium
US20030087005A1 (en) * 1996-10-10 2003-05-08 Peter Baron Drink flavouring straw
EP0942656B1 (en) * 1996-10-10 2003-05-21 Peter Baron Apparatus for producing a flavoured beverage
AUPS270602A0 (en) 2002-05-31 2002-06-20 Baron, Peter Drink flavouring straw
USD408886S (en) 1997-12-15 1999-04-27 R-Amtech International, Inc. Individual device for purifying and disinfecting water
USD411282S (en) 1998-09-08 1999-06-22 Joseph King Spa canister
US6142384A (en) * 1999-01-28 2000-11-07 Shafik; Aasef M. Personal portable liquid filter device
AU7340100A (en) 1999-08-31 2001-03-26 Kimberly-Clark Worldwide, Inc. Portable purification system
USD433729S (en) * 1999-08-31 2000-11-14 Kimberly-Clark Worldwide, Inc. Filtration bottle with cap
USD429312S (en) * 1999-08-31 2000-08-08 Kimberly-Clark Worldwide, Inc. Travel filtration bottle
US6331246B1 (en) * 2000-05-08 2001-12-18 Stryker Corporation Waste filter and manifold system
USD449092S1 (en) 2000-05-30 2001-10-09 Paul A. Brog Cap tether
US6887379B2 (en) * 2000-07-25 2005-05-03 Beryl B. Schiltz Multiple use water purification device
US6651824B2 (en) * 2001-08-17 2003-11-25 Dart Industries Inc. Filter pitcher with ice hopper
US6811036B1 (en) * 2002-10-21 2004-11-02 Vincent Vaiano Drinking straw with integral filtration system
US7326334B2 (en) 2003-10-01 2008-02-05 Instapure Brands, Inc. End-of-faucet filter
USD533622S1 (en) 2003-10-01 2006-12-12 Water Pik, Inc. End-of-faucet filter
US7585409B2 (en) * 2005-11-04 2009-09-08 Filtrex Holdings Pte Multi-stage water purification device
AR060029A1 (en) * 2006-03-02 2008-05-21 Unistraw Patent Holdings Ltd DRINK STRAW ADAPTED FOR PROGRESSIVELY CONDITIONING AN ACTIVE INGREDIENT AND METHOD OF MANUFACTURING SUCH PAJILLA
US20080011662A1 (en) * 2006-04-20 2008-01-17 Emil Milosavljevic Compositions and methods for fluid purification
BRPI0621568A2 (en) * 2006-04-20 2011-12-13 Water Security Corp fluid purification compositions and methods
US7427409B2 (en) * 2006-07-26 2008-09-23 Water Visions International, Inc. Broad spectrum antimicrobial purification materials and methods for purifying fluids
WO2008074680A1 (en) * 2006-12-20 2008-06-26 Unilever Plc Anti-malodour dispensing device
WO2008077748A1 (en) * 2006-12-22 2008-07-03 Unilever Plc Anti-malodour dispensing device
US8820425B2 (en) * 2007-09-30 2014-09-02 Jacqueline A. GATLING Filtered cake candle extinguisher
WO2009045883A2 (en) * 2007-09-30 2009-04-09 Jacqueline Gatling Filtered cake candle extinguisher
US8926840B2 (en) 2008-03-18 2015-01-06 Rubbermaid Incorporated Drinking container and filter assembly
US8535531B2 (en) * 2008-04-23 2013-09-17 Water Security Corporation Halogenated resin beds
US20100006505A1 (en) * 2008-07-10 2010-01-14 Terryll Riley Smith Filter with iodinated resin and filter life indicator
US20120301579A1 (en) * 2008-10-27 2012-11-29 Lee Jeong-Min Drink flavoring straw
US20100133194A1 (en) * 2008-11-05 2010-06-03 Water Security Corporation Water treatment systems with dual purpose ion exchange resin
EP2427082A2 (en) * 2009-05-05 2012-03-14 Christiaan Mattheus Cap for a drinking straw
US8986544B2 (en) 2009-10-21 2015-03-24 Marmon Water (Singapore) Pte. Ltd. Vented filter cartridge for water treatment device
WO2011128885A1 (en) * 2010-04-16 2011-10-20 Moshe Golan Personal portable water purification device
US9750834B1 (en) 2011-12-29 2017-09-05 Crosstex International, Inc. Water treatment dispensing apparatus
WO2016196868A1 (en) * 2015-06-05 2016-12-08 Porex Corporation Multi-section porous liquid filter with non-mechanical gas vent
ES2560127B2 (en) * 2015-09-17 2016-07-05 Universidad Rey Juan Carlos Potablilizer fishing rod
JP5924655B1 (en) * 2015-09-30 2016-05-25 小川　修 Jet nozzle pipe
US9517948B1 (en) * 2015-11-24 2016-12-13 Sylvia Marie Garrett Portable personal water filtration system
US9828273B2 (en) 2016-02-23 2017-11-28 Michael M. Barlow Multi-stage portable water purifier
USD809060S1 (en) * 2016-05-28 2018-01-30 Zhiguang Zhang Cap holder for stylus pencil
US10759687B1 (en) * 2016-10-11 2020-09-01 Chad Lavender Tank water treatment system and method of use
US20180199741A1 (en) * 2017-01-14 2018-07-19 Tracie Taylor Straw topper and method
US9873627B1 (en) * 2017-05-17 2018-01-23 Michael M. Barlow Multi-stage portable water purifier with cleanable and replaceable insert cartridges
USD858690S1 (en) * 2017-10-24 2019-09-03 Crosstex International, Inc. Water treatment cartridge
MX2020003663A (en) * 2017-10-24 2020-08-03 Crosstex Int Inc WATER TREATMENT DISPENSING APPARATUS.
USD857800S1 (en) * 2018-01-19 2019-08-27 Zhihu WANG Pen sleeve
GB201814201D0 (en) * 2018-08-31 2018-10-17 Forest Drainage Products Ltd A dewatering unit
US20210401206A1 (en) * 2020-06-24 2021-12-30 Brita Lp Container and withdrawal system
JP2024545652A (en) * 2021-12-14 2024-12-10 インテグリス・インコーポレーテッド Liquid filter unit with laterally arranged filters and method of operation thereof
JP7405463B1 (en) * 2022-10-31 2023-12-26 株式会社ユニケミー Educational water treatment device and educational water treatment kit using it
USD1107860S1 (en) 2023-06-15 2025-12-30 Thirsty Lands, Inc. Portable water filter

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1000332A (en) * 1910-11-11 1911-08-08 Henry H Dyer Pocket-filter.
US1333011A (en) * 1917-12-07 1920-03-09 Peter E Crady Individual filter
US3327859A (en) * 1963-12-30 1967-06-27 Pall Corp Portable unit for potable water
US3389803A (en) * 1967-10-09 1968-06-25 Edward S. Barley Orally operable water filter
US3392837A (en) * 1965-10-13 1968-07-16 William A. Sanzenbacher Water-conditioning unit
US3715035A (en) * 1971-04-12 1973-02-06 J Welsh High capacity portable water purifier
US3923665A (en) * 1969-12-03 1975-12-02 Univ Kansas State Demand bactericide for disinfecting water and process of preparation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1072227A (en) * 1964-03-02 1967-06-14 American Mach & Foundry Improvements in or relating to water filter cartridges
DE2136646A1 (en) * 1971-07-22 1973-02-01 Pro Aqua Ges Fuer Ausruestungs Portable water purifier - for accident survival including seawater desalination capability
FR2206278B1 (en) * 1972-11-09 1976-10-01 Matsushita Electric Industrial Co Ltd
JPS5441549A (en) * 1977-09-08 1979-04-02 Tokyo Purojiekuto Kk Simple water purifier
JPS5454444A (en) * 1977-10-08 1979-04-28 Tokyo Purojiekuto Kk Simple water purifier
JPH089158Y2 (en) * 1990-05-17 1996-03-13 日本碍子株式会社 Metal melt filter cartridge
JP2511236Y2 (en) * 1993-08-06 1996-09-25 日本ゼニスパイプ株式会社 Equipment for removing air bubbles etc. in a flat die for vibration production of concrete secondary products

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1000332A (en) * 1910-11-11 1911-08-08 Henry H Dyer Pocket-filter.
US1333011A (en) * 1917-12-07 1920-03-09 Peter E Crady Individual filter
US3327859A (en) * 1963-12-30 1967-06-27 Pall Corp Portable unit for potable water
US3392837A (en) * 1965-10-13 1968-07-16 William A. Sanzenbacher Water-conditioning unit
US3389803A (en) * 1967-10-09 1968-06-25 Edward S. Barley Orally operable water filter
US3923665A (en) * 1969-12-03 1975-12-02 Univ Kansas State Demand bactericide for disinfecting water and process of preparation
US3715035A (en) * 1971-04-12 1973-02-06 J Welsh High capacity portable water purifier

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0243990A1 (en) * 1986-03-27 1987-11-04 Duphar International Research B.V Device for inward suction of liquid
US4798671A (en) * 1986-03-27 1989-01-17 Duphar International Research B.V. Device for inward suction of liquid
WO2009021197A3 (en) * 2007-08-08 2009-05-22 Paul W O'brien Portable drinking water purification device
US8216462B2 (en) 2007-08-08 2012-07-10 O'brien Paul W Portable drinking water purification device
US8394268B2 (en) 2008-08-08 2013-03-12 Miracle Straw Corporation, Inc. Double chamber water purification device
WO2010045502A3 (en) * 2008-10-15 2010-08-12 O'brien Paul W Protable drinking water purification device
US8318011B2 (en) 2008-10-15 2012-11-27 Miracle Straw Corporation, Inc. Portable drinking water purification device
WO2010138462A3 (en) * 2009-05-24 2011-04-07 O'brien Paul W Water filtering and purification method and adapter kit
US8425771B2 (en) 2009-07-24 2013-04-23 Miracle Straw Corporation, Inc. Double chamber water purification device

Also Published As

Publication number Publication date
GB2080278A (en) 1982-02-03
US4298475A (en) 1981-11-03
PH17774A (en) 1984-12-11
EP0056054B1 (en) 1985-04-17
IL63353A0 (en) 1981-10-30
ES268150U (en) 1984-02-01
IL63353A (en) 1985-02-28
JPS57501221A (en) 1982-07-15
YU178981A (en) 1983-02-28
IT8148917A0 (en) 1981-07-16
PL232263A1 (en) 1982-04-26
ZA814703B (en) 1982-07-28
EP0056054A4 (en) 1982-11-25
EP0056054A1 (en) 1982-07-21
IT1142851B (en) 1986-10-15
GB2080278B (en) 1984-05-10
JPS6125991U (en) 1986-02-15
CA1153835A (en) 1983-09-13
BR8108705A (en) 1982-06-01
ES268150Y (en) 1984-09-01
IN155416B (en) 1985-01-26

Similar Documents

Publication Publication Date Title
US4298475A (en) Water purification system
US4995976A (en) Water purification straw
US5569380A (en) Portable water filtering device
EP0797474B1 (en) Portable water purifying and drinking device
US4711723A (en) Water purification system
US8318011B2 (en) Portable drinking water purification device
US4389311A (en) Portable water purifier
US20050072729A1 (en) Water purification cartridge
US6811036B1 (en) Drinking straw with integral filtration system
US6106725A (en) Point-of-use removal of lead and copper in drinking water using hydroxylapatite and carbonate minerals
WO1993018837A1 (en) Water purification system
AU7453681A (en) Water purification system
Rice et al. Biological processes in the treatment of municipal water supplies.
WO1995029878A1 (en) Water purifier
JP3370351B2 (en) Water purifier
CN2215480Y (en) Water purifying and sterilizing tank
KR19990017255A (en) Catch Basin Wastewater Filtration Unit
JPH1147733A (en) Water purifier
KR890002198Y1 (en) Water-cleaning device
RU2133133C1 (en) Individual filter for water purification
KR920003555B1 (en) Filter for water purifier
JP3034470U (en) Water purifier
JPH0724490U (en) Water purifier
KR830008710A (en) Portable water purification device
JPH0648885U (en) Cartridge for water purification

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): AU BR DE JP KP NL SU

AL Designated countries for regional patents

Designated state(s): AT CG CH DE FR NL SE SN

WWE Wipo information: entry into national phase

Ref document number: 1981902148

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1981902148

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1981902148

Country of ref document: EP