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US4298475A Expired / Lapsed US ⏱️ 0.0 years remaining

Water purification system

Assignee: Halex Inc
•
Filing: 1980-07-18
•
Granted: 1981-11-03
•
Expires: 2000-07-18
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Abstract

Abstract A portable water purifier is described comprising an elongated tube having a filtering agent, a bactericidal agent and an adsorbent material retained in the tube. The user supplies suction from the mouth to draw water through the tube for filtering out foreign material and purifying the water prior to use.

Inventors

  • 👤 William J. Gartner

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 16:46
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; C02F1/766; A; A47; A47G; A47G21/00; A47G21/18; A47G21/188; C02F1/001; C02F1/002; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/208

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 178 words
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 when 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.
Claim 2
Dependent Claim 178 words
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 when 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.
Claim 3
Dependent Claim 26 words
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.

References Cited (Backward Citations)

US1000332A Cited
US1333011A Cited
US3327859A Cited
US3392837A Cited
US3389803A Cited
US3923665A Cited
US3715035A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-11-02 1985-05-04 1985-11-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-11-02 1989-05-04 1989-11-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-11-02 1993-05-04 1993-11-03 $7700.00 Window Closed / Lapsed

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