Patent US2213645A successfully refreshed from Google Patents.
US3333705A
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Assignee: BELSON CORP
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Filing: 1967-03-07
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Granted: 1967-08-01
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Expires: 1987-03-07
Abstract
No abstract record available.
Inventors
- 👤 Wilfred J Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:36
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/09; B01D29/096; B01D29/60; B01D29/606; B01D2201/00; B01D2201/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A FILTER OF THE TYPE HAVING A MOVABLE PERFORATE CONVEYOR, MEANS COOPERATING WITH SAID CONVEYOR TO FORM A POOL OF LIQUID TO BE FILTERED ON THE TOP THEREOF, A SHEET OF FILTER MEDIUM ON SAID CONVEYOR AND MOVABLE THEREWITH, A VESSEL UNDERLYING SAID FILTER MEDIUM FOR RECEIVING LIQUID PASSING THERETHROUGH AND MEANS COMPRISING SEALING STRIPS AT OPPOSITE SIDES OF THE POOL AND ENGAGING THE SHEET OF FILTER MEDIUM IN SAID POOL, THAT IMPROVEMENT COMPRISING, TROUGHS UNDERLYING THE EDGES OF SAID CONVEYOR OUTWARDLY FROM SAID SEALING STRIPS TO RECEIVE ANY LIQUID MAINTAINING THROUGH THE SEALING STRIPS AND SEGREGATING IT FROM THE FILTERED LIQUID IN SAID VESSEL,
Claim 2
Dependent Claim
106 words
IN A FILTER OF THE TYPE HAVING A MOVABLE PERFORATE CONVEYOR, MEANS COOPERATING WITH SAID CONVEYOR TO FORM A POOL OF LIQUID TO BE FILTERED ON THE TOP THEREOF, A SHEET OF FILTER MEDIUM ON SAID CONVEYOR AND MOVABLE THEREWITH, A VESSEL UNDERLYING SAID FILTER MEDIUM FOR RECEIVING LIQUID PASSING THERETHROUGH AND MEANS COMPRISING SEALING STRIPS AT OPPOSITE SIDES OF THE POOL AND ENGAGING THE SHEET OF FILTER MEDIUM IN SAID POOL, THAT IMPROVEMENT COMPRISING, TROUGHS UNDERLYING THE EDGES OF SAID CONVEYOR OUTWARDLY FROM SAID SEALING STRIPS TO RECEIVE ANY LIQUID MAINTAINING THROUGH THE SEALING STRIPS AND SEGREGATING IT FROM THE FILTERED LIQUID IN SAID VESSEL,
References Cited (Backward Citations)
US2619232A
Cited
US2983383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |