US3212639A
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Assignee: Ametek Inc
•
Filing: 1962-11-19
•
Granted: 1965-10-19
•
Expires: 1982-11-19
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:03
CPC Classifications
B; B01; B01D; B01D37/00; B01D37/04; B01D29/00; B01D29/39; B01D29/41; B01D29/62; B01D29/70; B01D29/72; B01D29/76; B01D29/80; B01D29/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A FILTERING SYSTEM INCLUDING A LEAF FILTER HAVING FILTER LEAVES AND COMPRISING A DRUM HAVING A REMOVABLE COVER AND A FILTER LEAF ASSEMBLY SUPPORTED ON MEANS CONCOVER AND LEAF ASSEMBLY RELATIVELY TO AND FROM SAID DRUM, AND VIBRATION MEANS CONNECTED TO THE SUPPORT FOR SAID FILTER LEAF ASSEMBLY, THE COMBINATION COMPRISING FILTER CAKE THICKNESS DETECTING MEANS; DIFFERENTIAL PRESSURE TRANSMITTING MEANS FOR DETECTING THE PRESSURE BETWEEN TRANSMITOF THE LEAVES AND THE INTERIOR OF THE DRUM; TIMER MEANS; AND MEANS RESPONSIVE TO THE OPERATION OF ANY OF SAID DETECTING, PRESSURE AND TIMER MEANS FOR CAUSING SAID DRUM TO DRAIN, SAID COVER TO BE MOVED TO AN OPEN POSITION AND SAID LEAF ASSEMBLY REMOVED FROM SAID DRUM, AND SAID VIBRATION MEANS TO BECOME EFFECTIVE TO REMOVE FILTER CAKE FROM SAID LEAVES.
Claim 2
Dependent Claim
129 words
IN A FILTERING SYSTEM INCLUDING A LEAF FILTER HAVING FILTER LEAVES AND COMPRISING A DRUM HAVING A REMOVABLE COVER AND A FILTER LEAF ASSEMBLY SUPPORTED ON MEANS CONCOVER AND LEAF ASSEMBLY RELATIVELY TO AND FROM SAID DRUM, AND VIBRATION MEANS CONNECTED TO THE SUPPORT FOR SAID FILTER LEAF ASSEMBLY, THE COMBINATION COMPRISING FILTER CAKE THICKNESS DETECTING MEANS; DIFFERENTIAL PRESSURE TRANSMITTING MEANS FOR DETECTING THE PRESSURE BETWEEN TRANSMITOF THE LEAVES AND THE INTERIOR OF THE DRUM; TIMER MEANS; AND MEANS RESPONSIVE TO THE OPERATION OF ANY OF SAID DETECTING, PRESSURE AND TIMER MEANS FOR CAUSING SAID DRUM TO DRAIN, SAID COVER TO BE MOVED TO AN OPEN POSITION AND SAID LEAF ASSEMBLY REMOVED FROM SAID DRUM, AND SAID VIBRATION MEANS TO BECOME EFFECTIVE TO REMOVE FILTER CAKE FROM SAID LEAVES.
References Cited (Backward Citations)
US2841308A
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US2874848A
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US2843267A
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US2993599A
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US2969148A
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US2901115A
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US2912110A
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US2975903A
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US3043434A
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US3077988A
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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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |