US4675109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reverse osmosis permeator
Assignee: EIDP Inc
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Filing: 1985-05-08
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Granted: 1987-06-23
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Expires: 2005-05-08
Abstract
Abstract A reverse osmosis permeator of the capillary type wherein the tube sheet in which the ends of the capillaries are mounted and the porous support block therefor are slidably mounted on a hollow feed tube mounted in the center of the permeator is disclosed. The invention involves insuring that relative movement between the tube sheet and the support block does not occur during shut down of the permeator. This can be done by hydraulic pressure, spring loading, or mechanical attachment such as one or more bolts.
Inventors
- 👤 Lynn E. Applegate
- 👤 Clifton T. Sackinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:22
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/02; B01D63/021; B01D63/022; B01D63/0221; B01D2313/00; B01D2313/20; B01D2313/205; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y02A20/131
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
100 words
A tubular reverse osmosis permeator containing a plurality of capillaries the open ends of which capillaries are mounted in a tube sheet which is mounted on shaft adapted to bear against the end of said permeator away from said tube sheet when said permeator is not in operation, a porous support block slidably mounted within said permeator adapted to bear against the end of said tube sheet and thereby support it against pressure when said permeator is in operation; and means adapted to ensure constant urging of said support block against said tube sheet when said permeator is shut down.
Claim 2
Dependent Claim
100 words
A tubular reverse osmosis permeator containing a plurality of capillaries the open ends of which capillaries are mounted in a tube sheet which is mounted on shaft adapted to bear against the end of said permeator away from said tube sheet when said permeator is not in operation, a porous support block slidably mounted within said permeator adapted to bear against the end of said tube sheet and thereby support it against pressure when said permeator is in operation; and means adapted to ensure constant urging of said support block against said tube sheet when said permeator is shut down.
Claim 3
Dependent Claim
38 words
The tubular reverse osmosis permeator of claim 1 wherein the means adapted to ensure constant urging of the support block against the tube sheet are springs bringing pressure between the support block and the end of the permeator.
Claim 4
Dependent Claim
58 words
The tubular reverse osmosis permeator of claim 1 wherein the means adapted to ensure constant urging of the support block against the tube sheet is a body of water on the feed brine end of the permeator located higher than any body of water connected to the product end of the permeator during shut down of the permeator.
Claim 5
Dependent Claim
36 words
The tubular reverse osmosis permeator of claim 1 wherein the means adapted to ensure constant urging of the support block against the tube sheet is direct mechanical attachment between the tube sheet and the support block.
Claim 6
Dependent Claim
26 words
The tubular reverse osmosis permeator of claim 4 wherein the means adapted to ensure constant urging of the support against the tube sheet is a bolt.
References Cited (Backward Citations)
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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) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |