Patent US3597845A successfully refreshed from Google Patents.
Patent US3741892A successfully refreshed from Google Patents.
US3741892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for filtering a particle-laden fluid
Assignee: Individual
•
Filing: 1971-11-22
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Granted: 1973-06-26
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Expires: 1991-11-22
Abstract
Abstract A method of filtering a liquid or gaseous particle-laden fluid, in which method upstream and downstream paths of travel are imparted to the fluid on either side of a filtering surface through which at least part of the fluid is thus caused to pass, said surface being located between an inlet for the laden fluid and an outlet for the purified fluid. The invention also relates to a device for performing this method.
Inventors
- 👤 L Bourdale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:28
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/22; B01D29/00; B01D29/01
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
124 words
A device for performing the method claimed in claim 1, comprising a hollow body to which are connected, at the top, an inlet port for the laden fluid, at the side, an outlet port for the purified fluid and, at the bottom, an outlet port for the particles, characterized in that this hollow body has a cross-section which diminishes progressively from the inlet for the laden fluid to the outlet for the particles, and is partitioned by a series of filtering plates arranged to form, alternately, on the one hand, passages of diminishing cross-section which directly connect the inlet for the laden fluid to the outlet for the particles, and on the other hand, passages forming the downstream discharge zone for the purified fluid.
References Cited (Backward Citations)
US2988223A
Cited
US3421295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |