US3347389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum filter
Assignee: Ametek Inc
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Filing: 1965-09-09
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Granted: 1967-10-17
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Expires: 1985-09-09
Abstract
No abstract record available.
Inventors
- 👤 John E Krynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:39
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/044; B01D33/048; B01D33/056; B01D33/06; B01D33/073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A DRUM FILTER, THE COMBINATION COMPRISING A DRUM MOUNTED FOR ROTATION ABOUT A HORIZONTAL AXIS; A DISCHARGE ROLL MOUNTED FOR ROTATION ABOUT AN AXIS PARALLEL WITH SAID DRUM AXIS; CHANNEL-SHAPED ANNULAR MEANS FIXED TO SAID DRUM INWARDLY OF THE EDGES THEREOF, SAID ANNULAR MEANS INCLUDING FLANGE MEANS PARALLEL WITH AND SPACED FROM THE PERIPHERY OF SAID DRUM AND FORMING AN ANNULAR RECESS ABOUT EACH EDGE OF SAID DRUM; A RESILIENT ANNULAR MEMBER WITHIN SAID CHANNEL-SHAPED ANNULAR MEANS, EXTENDING RADIALLY THEREBEYOND, SAID RESILEINT MEMBER EXTENDING AROUND SAID FLANGE MEANS, AND EXTENDING AXIALLY BEYOND THE END OF SAID FLANGE MEANS; AN ENDLESS CLOTH BELT HAVING A WIDTH TRANSVERSELY SUBSTANTIALLY GREATER THAN
Claim 2
Dependent Claim
110 words
IN A DRUM FILTER, THE COMBINATION COMPRISING A DRUM MOUNTED FOR ROTATION ABOUT A HORIZONTAL AXIS; A DISCHARGE ROLL MOUNTED FOR ROTATION ABOUT AN AXIS PARALLEL WITH SAID DRUM AXIS; CHANNEL-SHAPED ANNULAR MEANS FIXED TO SAID DRUM INWARDLY OF THE EDGES THEREOF, SAID ANNULAR MEANS INCLUDING FLANGE MEANS PARALLEL WITH AND SPACED FROM THE PERIPHERY OF SAID DRUM AND FORMING AN ANNULAR RECESS ABOUT EACH EDGE OF SAID DRUM; A RESILIENT ANNULAR MEMBER WITHIN SAID CHANNEL-SHAPED ANNULAR MEANS, EXTENDING RADIALLY THEREBEYOND, SAID RESILEINT MEMBER EXTENDING AROUND SAID FLANGE MEANS, AND EXTENDING AXIALLY BEYOND THE END OF SAID FLANGE MEANS; AN ENDLESS CLOTH BELT HAVING A WIDTH TRANSVERSELY SUBSTANTIALLY GREATER THAN
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |