US3667604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving bed apparatus for the treatment of fluid
Assignee: FILTRES VERNAY
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Filing: 1970-06-04
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Granted: 1972-06-06
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Expires: 1990-06-04
Abstract
Abstract A fluid is filtered by passing a stream of fluid through a porous wall of an inlet chamber through a treatment zone filled with treatment material and then through another porous wall into a collecting chamber. The flow from the inlet chamber to the collecting chamber is substantially horizontal and a vertically upwardly directed liquid stream passes through the treatment material at the bottom of the container to entrain particles of the treatment material and lift them to the top of the container to provide for recirculation of the treatment material. The treatment material is regenerated during the circulation with the impurities being removed from the container near the top portion thereof above the treatment material.
Inventors
- 👤 Pierre Lagoutte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:30
CPC Classifications
B; B01; B01D; B01D24/00; B01D24/28; B01D24/30; B01D24/46; B01D24/4668; B01D24/4689; B01J; B01J47/00; B01J47/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
176 words
An apparatus for the treatment of fluid comprising an inlet chamber having a first foraminous wall, a collection chamber having a second foraminous wall, said first and second foraminous walls being spaced from each other to provide a treatment zone therebetween, means for passing fluid to be treated from said inlet chamber to said collecting chamber through said first foraminous wall, across said treatment zone and through said second foraminous wall, means for passing treatment material through said treatment zone in a path traversing the path of said fluid, at least one of said first and second foraminous walls being formed by a flexible sheet having a plurality of holes formed therethrough to permit fluid flow in one direction only, each of said holes being of cruciform shape and having lips on one side of said sheet with claws formed at the extremity of each of said lips whereby said claws engage each other if fluid attempts to flow through said sheet from the lipped side of the sheet, and means for supporting said flexible sheet.
Claim 2
Independent Claim
176 words
An apparatus for the treatment of fluid comprising an inlet chamber having a first foraminous wall, a collection chamber having a second foraminous wall, said first and second foraminous walls being spaced from each other to provide a treatment zone therebetween, means for passing fluid to be treated from said inlet chamber to said collecting chamber through said first foraminous wall, across said treatment zone and through said second foraminous wall, means for passing treatment material through said treatment zone in a path traversing the path of said fluid, at least one of said first and second foraminous walls being formed by a flexible sheet having a plurality of holes formed therethrough to permit fluid flow in one direction only, each of said holes being of cruciform shape and having lips on one side of said sheet with claws formed at the extremity of each of said lips whereby said claws engage each other if fluid attempts to flow through said sheet from the lipped side of the sheet, and means for supporting said flexible sheet.
Claim 3
Independent Claim
175 words
An apparatus for the treatment of fluid comprising an inlet chamber having a first foraminous wall, a collection chamber having a second foraminous wall, said first and second foraminous walls being spaced from each other to provide a treatment zone therebetween, means for passing fluid to be treated from said inlet chamber to said collecting chamber through said first foraminous wall, and means for passing treatment material through said treatment zone in a path traversing the path of said fluid, at least one of said foraminous walls comprising a rigid perforated former and a flexible band wound helically on said former on the side thereof remote from said inlet chamber, said band being profiled in cross-section to provide a thickened heel along one edge and a flexible lip along the opposite edge, said helical winding being disposed with said lip of one convolution overlying said heel of an adjacent convolution on the downstream side thereof relative to the direction of flow of the fluid through said perforated former to provide a one way valve arrangement.
Claim 4
Independent Claim
175 words
An apparatus for the treatment of fluid comprising an inlet chamber having a first foraminous wall, a collection chamber having a second foraminous wall, said first and second foraminous walls being spaced from each other to provide a treatment zone therebetween, means for passing fluid to be treated from said inlet chamber to said collecting chamber through said first foraminous wall, and means for passing treatment material through said treatment zone in a path traversing the path of said fluid, at least one of said foraminous walls comprising a rigid perforated former and a flexible band wound helically on said former on the side thereof remote from said inlet chamber, said band being profiled in cross-section to provide a thickened heel along one edge and a flexible lip along the opposite edge, said helical winding being disposed with said lip of one convolution overlying said heel of an adjacent convolution on the downstream side thereof relative to the direction of flow of the fluid through said perforated former to provide a one way valve arrangement.
References Cited (Backward Citations)
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US3537582A
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US3415382A
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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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |