US4944875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural filter tube sequential distribution apparatus
Assignee: Millipore SAS
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Filing: 1988-06-20
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Granted: 1990-07-31
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Expires: 2008-06-20
Abstract
Abstract A device for the production of ultrapure water comprising tubes containing water treatment elements joined by two end plates. Grids are disposed between the tubes and the end plates to retain resin or carbon particles. Connector terminations provide a hydraulic connection between a control unit and the tubes. The filter is mounted in the tubes by means of an adapter which also provides a seal between inlet and outlet sides of the filter. Holes are provided in the connector terminations and the end plates to enable selection of the path of fluid in the water treatment elements.
Inventors
- 👤 Yves Gaignet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:16
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/30; B01D35/301; B01D35/303; C; C02; C02F; C02F9/00; C02F9/20; B01D61/00; B01D61/14; B01D61/18; B01D65/00; C02F1/00; C02F1/44; C02F1/444
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
157 words
Apparatus for purifying a fluid which comprises: a plurality of tubes each containing at least one fluid treating element adapted to receive said fluid to be purified; first and second end plates integrally joined to the respective ends of said tubes; first and second fluid distribution means located respectively within said first and second end plates and being in fluid communication with the ends of said tubes; means in fluid communication with said first fluid distribution means for introducing said fluid into said first end plate, said first fluid distribution means directing said fluid through one end of one of said tubes; said first and second fluid distribution means being adapted to pass said fluid sequentially through each of said tubes to purify said fluid; and means in fluid communication with said second fluid distribution means for removing purified fluid from said second end plate, whereby said apparatus constitutes a one piece, self contained fluid purification cartridge.
Claim 2
Dependent Claim
157 words
Apparatus for purifying a fluid which comprises: a plurality of tubes each containing at least one fluid treating element adapted to receive said fluid to be purified; first and second end plates integrally joined to the respective ends of said tubes; first and second fluid distribution means located respectively within said first and second end plates and being in fluid communication with the ends of said tubes; means in fluid communication with said first fluid distribution means for introducing said fluid into said first end plate, said first fluid distribution means directing said fluid through one end of one of said tubes; said first and second fluid distribution means being adapted to pass said fluid sequentially through each of said tubes to purify said fluid; and means in fluid communication with said second fluid distribution means for removing purified fluid from said second end plate, whereby said apparatus constitutes a one piece, self contained fluid purification cartridge.
Claim 3
Dependent Claim
30 words
The apparatus of claim 1 wherein said fluid distribution means comprises pre-selective fluid passageway means for connecting the flow of fluid through said plurality of tubes in a predetermined manner.
Claim 4
Dependent Claim
18 words
The apparatus of claim 1 wherein said self-contained cartridge is formed of plastic and constitutes a disposable device.
Claim 5
Dependent Claim
36 words
The apparatus of claim 1 including first and second connectors formed on said first and second end plates to provide the necessary inlet and outlet fluid connections between said self-contained cartridge and an associated control unit.
Claim 6
Dependent Claim
24 words
The apparatus of claim 4 wherein said connectors are adapted to provide fast connections and disconnections between said self-contained cartridge and said control unit.
Claim 7
Independent Claim
67 words
The apparatus of any one of claims 1, 2 or 4 including a thin grid with a pore diameter of a few tens of microns being disposed between one of said tubes and one of said end plates, said grid being retained by a rim and a star-shape part formed on said one end plate and serving to retain resin or carbon particles contained in said tubes.
Claim 8
Independent Claim
53 words
The apparatus of any one of claims 1, 2 or 4 including means integral with a filter disposed between said tube and said end plate to guide said filter into the tube, to fix said filter into said cartridge and to provide a seal between said inlet and outlet sides of the filter.
References Cited (Backward Citations)
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Cited
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US4659460A
Cited
US4522717A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |