US3674152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reverse osmosis test cell
Assignee: Universal Water Corp
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Filing: 1970-08-25
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Granted: 1972-07-04
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Expires: 1990-08-25
Abstract
Abstract A semipermeable membrane-containing cell, useful when connected to a pump and a pressure control to form a reverse osmosis system, has an adjustable gap through which the feed water flows over the membrane surface. The gap is formed between the membrane surface and the surface of a disk having a stem screw-thread mounted inside the cell so that rotation of the stem will move the disk surface closer to or farther from the membrane surface. An O-ring seals the disk stem to the cell interior and provides friction to maintain the gap adjustment.
Inventors
- 👤 Serop Manjikian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:53
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/02; B01D61/08; B01D63/00; B01D63/08; B01D63/087; B01D2313/00; B01D2313/10; B01D2313/20; B01D2313/201; B01D2313/2011
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
168 words
In a cell, useful in apparatus for treating a solution by reverse osmosis, comprising a pressure resistant casing, a membrane and membrane support means inside said casing, means for supplying solution to a surface of said membrane, means for releasing solution from said cell, and means for collecting purified solution from said cell, in which the improvements comprise: a. said means for supplying solution to said membrane surface including a disk having a surface facing said membrane surface and having a central bore adapted to direct said solution against said surface of said membrane and having its outer edge spaced from the adjacent surface of said casing; b. means for adjustably mounting said disk inside said casing so that adjustment of said disk will adjust the gap between the surface of said disk and the facing surface of said membrane; and, c. the space between the outer edge of said disk and the adjacent surface of said casing communicating with said means for releasing solution from said cell.
Claim 2
Dependent Claim
168 words
In a cell, useful in apparatus for treating a solution by reverse osmosis, comprising a pressure resistant casing, a membrane and membrane support means inside said casing, means for supplying solution to a surface of said membrane, means for releasing solution from said cell, and means for collecting purified solution from said cell, in which the improvements comprise: a. said means for supplying solution to said membrane surface including a disk having a surface facing said membrane surface and having a central bore adapted to direct said solution against said surface of said membrane and having its outer edge spaced from the adjacent surface of said casing; b. means for adjustably mounting said disk inside said casing so that adjustment of said disk will adjust the gap between the surface of said disk and the facing surface of said membrane; and, c. the space between the outer edge of said disk and the adjacent surface of said casing communicating with said means for releasing solution from said cell.
Claim 3
Dependent Claim
28 words
A cell according to claim 1 in which a stem is attached to said disk having a common bore therewith, said stem being adjustably mounted in said casing.
Claim 4
Dependent Claim
41 words
A cell according to claim 2 in which said stem is mounted by a screw-thread inside said casing so that rotation of said stem will adjust the gap between said surface of said disk and the facing surface of said membrane.
Claim 5
Dependent Claim
35 words
A cell according to claim 3 in which said stem is threaded into a bore in a post inside said casing and said stem is sealed to the wall of said bore by an O-ring.
Claim 6
Dependent Claim
31 words
A cell according to claim 4 in which said O-ring is maintained under suffIcient compression to provide frictional stability to said stem to prevent rotation thereof during operation of said apparatus.
References Cited (Backward Citations)
US1139331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |