US3623610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reverse osmosis apparatus
Assignee: Danske Sukkerfabrikker AS
•
Filing: 1969-10-23
•
Granted: 1971-11-30
•
Expires: 1989-10-23
Abstract
Abstract In an apparatus for reversed osmosis comprising a plurality of disc-formed semipermeable membranes arranged in a pile the liquid to be treated is conducted alternatively outwardly and inwardly along the membranes. Between the membranes combined distance rings and guide plates are arranged which respectively separate the membranes and conduct the liquid along the membranes. In each combined distance ring and guide plate holes are provided inside the distance ring for conducting the liquid from one side of the guide plate to the other and at the center of the pile the liquid is transferred from one membrane to the next membrane through gaps between the membranes and a central bolt which clamps the pile together axially.
Inventors
- 👤 Ole Jentoft Olsen
- 👤 Rud Frik Madsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:32
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/02; B01D61/08; A; A23; A23L; A23L2/00; A23L2/02; A23L2/08; A23L2/082; A23L2/085; B01D63/00; B01D63/08; B01D63/082; B01D63/0822; C; C02; C02F; C02F1/00; C02F1/44; C02F1/441; B01D2313/00; B01D2313/02; C02F2103/00; C02F2103/08; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y02A20/131
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
26 words
An apparatus according to claim 1, wherein each of said ring portions includes on opposite sides thereof sealing means in the form of circumferentially extending ridges.
Claim 2
Dependent Claim
28 words
An apparatuS according to claim 1, wherein the thickness of said guide plate portions increases from said central holes outwardly towards said outer ring portions of each disc.
Claim 3
Dependent Claim
30 words
An apparatus according to claim 1, wherein each guide plate portion has a wave-formed cross section between the central hole in said guide plate portion and said outer ring portion.
Claim 4
Dependent Claim
82 words
An apparatus according to claim 1, wherein said sealing means for preventing flow of fluid between the bolt and the edges of said apertures in said guide plate portions are formed by sharp lips along the edges of said apertures facing the main flow direction of said fluid, said lips contacting the bolt around the entire circumference thereof, the sharp edges of said lips are formed at the side of the guide plate portions facing the main flow direction of said fluid.
Claim 5
Dependent Claim
266 words
An apparatus according to claim 1, wherein the marginal area along the edge of the central hole in each guide plate portion is of reduced thickness as compared with the remaining part of the guide plate portion and includes radially extending bosses, and further comprising guide rings for the radially inner margins of said membranes and said membrane supports and having a V-shape is positioned upon said bosses, the inner diameter of said guide rings being greater than the diameter of the bolt for providing said flow gaps. 7, An apparatus according to claim 1, wherein a marginal area along the edge of the central hole in each guide plate portion is of reduced thickness as compared with the remaining part of the guide plate portion, a row of bosses extend radially along said area, a guide ring having a V-shape is supported upon each said row of bosses by means of a radially extending flange of said guide ring, the other flange of said guide ring being axially directed and surrounding said bolt and being spaced from the bolt, the radially inner marginal portions of each membrane support being solid and having a radial width which is greater than the width of the radially extending flanges of said guide rings, said solid inner marginal portion of each membrane support being clamped axially between the radially extending flanges of the two adjacent guide rings, the radially inner margins of the membranes of said membrane support being clamped between the radially extending flanges of the adjacent guide rings and the solid marginal portion of said membrane support.
References Cited (Backward Citations)
US3397785A
Cited
US3398834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |