Patent JPS5717869A successfully refreshed from Google Patents.
US3756413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making potable water
Assignee: Gartner Research & Dev Co
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Filing: 1972-04-13
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Granted: 1973-09-04
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Expires: 1992-04-13
Abstract
Abstract Impure water is made suitable for drinking in an apparatus comprising a pressurizable holding tank attached to a purification cartridge containing an impurities adsorbent and a fine filter. A gas-containing cartridge is pierced to provide a bactericidal gas for killing pathogenic microorganisms and for pressurizing the holding tank to force the water through the purification cartridge.
Inventors
- 👤 W Gartner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:49
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/28; C02F1/283; C02F1/42; C02F1/50; C02F1/72; C02F1/76; C02F9/00; C02F9/20; C02F1/68; C02F1/685; C02F2001/427; C02F2201/00; C02F2201/002; C02F2201/006; C02F2303/00; C02F2303/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
100 words
Apparatus for making potable water from contaminated water comprising a pressurizable holding tank having a water retention space superposed by a gas retention space, an outlet conduit leading from a lower portion of said holding tank to a purification cartridge containing a granular adsorbent, valve means in said outlet conduit, gas cartridge means containing a gas under pressure, means to puncture said gas cartridge means to release the gas therefrom and conduit means communicating with said cartridge and a lower portion of said water retention space to transfer the released gas to said lower portion of said water retention space.
Claim 2
Dependent Claim
100 words
Apparatus for making potable water from contaminated water comprising a pressurizable holding tank having a water retention space superposed by a gas retention space, an outlet conduit leading from a lower portion of said holding tank to a purification cartridge containing a granular adsorbent, valve means in said outlet conduit, gas cartridge means containing a gas under pressure, means to puncture said gas cartridge means to release the gas therefrom and conduit means communicating with said cartridge and a lower portion of said water retention space to transfer the released gas to said lower portion of said water retention space.
Claim 3
Dependent Claim
25 words
The apparatus of claim 1 wherein said purification cartridge is vertically disposed and said outlet is connected to the lower portion of said purification cartridge.
Claim 4
Dependent Claim
61 words
The apparatus of claim 2 wherein said purification cartridge has an outlet filter of such fineness as to provide a back pressure within the cartridge from about 5 to about 20 pounds per square inch when water at ambient temperatures flows through the cartridge at the rate of 5 gallons per hour per square inch of area of said outlet filter.
Claim 5
Dependent Claim
24 words
The apparatus of claim 3 wherein said purification cartridge has an inlet filter having at least as much flow resistance as said outlet filter.
Claim 6
Dependent Claim
27 words
The apparatus of claim 1 wherein said tank is L-shaped and said gas retention space is in the upper portion of the vertical member of the L.
Claim 7
Dependent Claim
19 words
The apparatus of claim 1 wherein said granular adsorbent comprises activated carbon as at least the predominant constituent thereof.
Claim 8
Dependent Claim
23 words
The apparatus of claim 1 wherein said granular adsorbent comprises at least one ion exchange resin as at least the predominant constituent thereof.
Claim 9
Dependent Claim
26 words
The apparatus of claim 1 wherein said gas under pressure comprises a mixture of a major proportion of nitrous oxide and a minor proportion of chlorine.
Claim 10
Dependent Claim
144 words
Apparatus for making potable water from contaminated water comprising an L-shaped pressurizable holding tank having a water retention space corresponding to the horizontal member of the L and a gas retention space corresponding to the upper portion of the vertical member of the L, an outlet conduit leading from a lower portion of said holding tank to a lower portion of a vertically disposed purification cartridge containing a granular adsorbent and having an outlet filter valve means in said conduit means, gas cartridge means containing under pressure a mixture of a major proportion of nitrous oxide and a minor proportion of chlorine, means to puncture said gas cartridge, means to release the gas therefrom and conduit means communicating with said cartridge and a lower portion of said water retention space to transfer the released gas to said lower portion of said water retention space.
Claim 11
Dependent Claim
144 words
Apparatus for making potable water from contaminated water comprising an L-shaped pressurizable holding tank having a water retention space corresponding to the horizontal member of the L and a gas retention space corresponding to the upper portion of the vertical member of the L, an outlet conduit leading from a lower portion of said holding tank to a lower portion of a vertically disposed purification cartridge containing a granular adsorbent and having an outlet filter valve means in said conduit means, gas cartridge means containing under pressure a mixture of a major proportion of nitrous oxide and a minor proportion of chlorine, means to puncture said gas cartridge, means to release the gas therefrom and conduit means communicating with said cartridge and a lower portion of said water retention space to transfer the released gas to said lower portion of said water retention space.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |