US4298475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water purification system
Assignee: Halex Inc
•
Filing: 1980-07-18
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Granted: 1981-11-03
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Expires: 2000-07-18
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)
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Cited
US1333011A
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US3327859A
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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 |