US3221886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backwash filter with filtrate deflector
Assignee: E AND M LAMORT FILS
•
Filing: 1963-11-04
•
Granted: 1965-12-07
•
Expires: 1983-11-04
Abstract
No abstract record available.
Inventors
- 👤 Lamort Pierre Louis Emil Marie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:46
CPC Classifications
B; B01; B01D; B01D37/00; B01D37/03; B01D21/00; B01D21/0012; B01D21/10; B01D21/24; B01D21/2444; B01D21/2488; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/17; B01D29/23; B01D29/25; B01D29/50; B01D29/52; B01D29/54; B01D29/62; B01D29/66; B01D29/68; B01D29/682; B01D29/88; B01D29/885; B01D29/90; B01D37/02; D; D21; D21D; D21D5/00; D21D5/02; D21D5/06; B01D2201/00; B01D2201/28; B01D2201/287
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
APPARATUS FOR THE FILTRATION OF LIQUID CONTAINING SOLID PARTICLES IN SUSPENSION, COMPRISING: CHAMBER MEANS HAVING A LIQUID-PERMEABLE FILTER WALL HAVING AN INNER AND AN OUTER SURFACE; A CONDUIT COMMUNICATING WITH THE INTERIOR OF SAID CHAMBER MEANS FOR FEEDING A LIQUID TO BE FILTERED INTO THE INTERIOR THEREOF SO THAT A FILTER CAKE WILL FORM ON THE INNER SURFACE OF SAID WALL WHILE CLEAR LIQUID WILL PASS THERETHROUGH; A COMPARTMENT BENEATH SAID WALL FOR RECEIVING THE CLEAR LIQUID; COOPERATING RINSING AND DEFLECTOR MEANS EXTENDING ALONG A PORTION OF SAID WALL ADJACENT THERETO FOR EJECTING A CLEANING FLUID AGAINST THE OUTER SURFACE OF SAID WALL SO THAT THE FLUID WILL PASS THERETHROUGH TO MOVE THE FILTER CAKE FROM SAID PORTION AND HAVING A DEFLECTOR ELEMENT FOR DEFLECTING ANY LIQUID PASSING AD-
Claim 2
Dependent Claim
129 words
APPARATUS FOR THE FILTRATION OF LIQUID CONTAINING SOLID PARTICLES IN SUSPENSION, COMPRISING: CHAMBER MEANS HAVING A LIQUID-PERMEABLE FILTER WALL HAVING AN INNER AND AN OUTER SURFACE; A CONDUIT COMMUNICATING WITH THE INTERIOR OF SAID CHAMBER MEANS FOR FEEDING A LIQUID TO BE FILTERED INTO THE INTERIOR THEREOF SO THAT A FILTER CAKE WILL FORM ON THE INNER SURFACE OF SAID WALL WHILE CLEAR LIQUID WILL PASS THERETHROUGH; A COMPARTMENT BENEATH SAID WALL FOR RECEIVING THE CLEAR LIQUID; COOPERATING RINSING AND DEFLECTOR MEANS EXTENDING ALONG A PORTION OF SAID WALL ADJACENT THERETO FOR EJECTING A CLEANING FLUID AGAINST THE OUTER SURFACE OF SAID WALL SO THAT THE FLUID WILL PASS THERETHROUGH TO MOVE THE FILTER CAKE FROM SAID PORTION AND HAVING A DEFLECTOR ELEMENT FOR DEFLECTING ANY LIQUID PASSING AD-
References Cited (Backward Citations)
US2751079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |