US4028250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtration apparatus
Assignee: Amerace Corp
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Filing: 1975-05-30
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Granted: 1977-06-07
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Expires: 1995-05-30
Abstract
Abstract Filtration apparatus comprising at least one microporous member having at least a pair of opposed surfaces and a predetermined thickness, a tubular member positioned with respect to at least one of said opposed surfaces whereby fluid passing through said microporous member is filtered and the filtrate is received by said tubular member for distribution and/or collection.
Inventors
- 👤 John T. Loft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:46
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/44; B; B01; B01D; B01D63/00; B01D63/06; B01D63/062; B01D63/10; B01D63/101; B01D63/14; C02F1/441; C02F1/444
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
148 words
Filtration apparatus comprising: a. tubular means, having at least one longitudinally extending slot therein for receiving a filtrate; and b. filter means, said filter means being disposed in a plurality of separate layers relative to said tubular means, said filter means comprising at least a pair of microporous members, said members being coupled together along a plurality of peripheral edges and defining at least a pair of uncoupled edges, said at least pair of uncoupled edges being adapted to engage sealing with said slot, and wherein at least one member of said pair of microporous members includes a plurality of spaced longitudinal extending channels reposed on a surface thereof between said coupled members for directing a filtrate into said tubular means through said slot; and c. spacing means for separating said spearate layers of said filter means from one another; and for conveying unfiltered fluid between said layers.
Claim 2
Dependent Claim
148 words
Filtration apparatus comprising: a. tubular means, having at least one longitudinally extending slot therein for receiving a filtrate; and b. filter means, said filter means being disposed in a plurality of separate layers relative to said tubular means, said filter means comprising at least a pair of microporous members, said members being coupled together along a plurality of peripheral edges and defining at least a pair of uncoupled edges, said at least pair of uncoupled edges being adapted to engage sealing with said slot, and wherein at least one member of said pair of microporous members includes a plurality of spaced longitudinal extending channels reposed on a surface thereof between said coupled members for directing a filtrate into said tubular means through said slot; and c. spacing means for separating said spearate layers of said filter means from one another; and for conveying unfiltered fluid between said layers.
Claim 3
Dependent Claim
36 words
The filtration apparatus, as recited in claim 1 further comprising: a. input and output means, respectively adapted for introducing said unfiltered fluid to said filter means, and for directing said filtrate away from said filter means.
Claim 4
Dependent Claim
45 words
The filtration apparatus, as recited in claim 2, wherein each said member comprises a polymeric resinous matrix with particles of inorganic filler dispersed therein, from which a network of pores are formed between particles of said dispersed filler and between particles of said resinous matrix.
Claim 5
Dependent Claim
95 words
A filtration apparatus, as recited in claim 3 wherein said pair are joined along said peripheral edges in substantially coextensive super-position relative to each other, with each member of said pair having at least a pair of opposed surfaces, and wherein said channels extend in a direction generally normal to said pair of uncoupled edges, thereby enabling said channels to receive said filtrate fluid between said opposed surfaces along a direction generally normal to said slot, and to direct filtrate into said tubular means along a path defined by wound turns of said filter means.
Claim 6
Dependent Claim
19 words
The filtration apparatus, as recited in claim 4, whrein said matrix is polyvinyl chloride and said filler is silica.
Claim 7
Dependent Claim
30 words
The filtration apparatus, as recited in claim 5, wherein said spacing means comprises an inert mesh like material and carries said unfiltered fluid between various said layers of said pairs.
Claim 8
Dependent Claim
46 words
The filtration apparatus, as recited in claim 6, wherein said input means comprises a first port positioned with respect to at least one of said opposed surfaces, whereby said fluid passes from said one opposed surface to a remaining opposed surface thereby enabling filtration to occur.
Claim 9
Dependent Claim
19 words
The filtration apparatus, as recited in claim 7, wherein said tubular means is a generally, centrally, longitudinally, positioned manifold.
Claim 10
Dependent Claim
27 words
The filtration apparatus, as recited in claim 3, wherein said output means comprises a port for supplying said filtrate to a reverse osmosis means cooperatively connected thereto.
Claim 11
Dependent Claim
49 words
A filtration apparatus, as recited in claim 9, wherein said reverse osmosis membrane means comprises: a. at least one semipermeable membrane; b. at least one porous support member for supporting said membrane; and c. at least one porous backing member for supporting said semipermeable membrane and said support member.
Claim 12
Dependent Claim
18 words
The filtration apparatus, as recited in claim 3, wherein said filter means is spirally wound about said manifold.
Claim 13
Dependent Claim
22 words
The filtration apparatus, as recited in claim 3, wherein said filter means is disposed relative to said manifold in a serpentine fashion.
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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) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |