Patent US3005690A successfully refreshed from Google Patents.
US3005690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple compartment rotary drum for the leaching of ores or related products in a continuous countercurrent system
Assignee: Individual
•
Filing: 1960-01-15
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Granted: 1961-10-24
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Expires: 1980-01-15
Abstract
No abstract record available.
Inventors
- 👤 Prasky Charles
- 👤 Willard S Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:31
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/48; B03B5/56; F; F27; F27B; F27B7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AN APPARATUS FOR TREATING SOLID PARTICULATE MATERIAL WITH LIQUIDS WHICH COMPRISES, A VESSEL HAVING A GENERALLY HORIZONTAL AXIS OF ROTATION, MEANS FOR ROTATING SAID VESSEL ABOUT SAID AXIS, INTERIOR PARTITIONS IN SAID VESSEL DIVIDING SAID VESSEL INTO A SERIES OF OPEN AND UNOBSTRUCTED COMPARTMENTS, A PAIR OF TERMINAL END PLATES ON SAID VESSEL, EACH OF THE TERMINAL END PLATES HAVING A CENTRAL OPENING THEREIN, EACH OF SAID PARTITIONS HAVING A FLUSH OPENING THEREIN SPACED FROM THE PERIPHERY OF THE VESSEL, THE CENTER OF SAID OPENING BEING SPACED FROM THE AXIS OF ROTATION, THE PARTITIONS BEING ARRANGED SO THAT THE OPENING IN ADJACENT
Claim 2
Independent Claim
102 words
AN APPARATUS FOR TREATING SOLID PARTICULATE MATERIAL WITH LIQUIDS WHICH COMPRISES, A VESSEL HAVING A GENERALLY HORIZONTAL AXIS OF ROTATION, MEANS FOR ROTATING SAID VESSEL ABOUT SAID AXIS, INTERIOR PARTITIONS IN SAID VESSEL DIVIDING SAID VESSEL INTO A SERIES OF OPEN AND UNOBSTRUCTED COMPARTMENTS, A PAIR OF TERMINAL END PLATES ON SAID VESSEL, EACH OF THE TERMINAL END PLATES HAVING A CENTRAL OPENING THEREIN, EACH OF SAID PARTITIONS HAVING A FLUSH OPENING THEREIN SPACED FROM THE PERIPHERY OF THE VESSEL, THE CENTER OF SAID OPENING BEING SPACED FROM THE AXIS OF ROTATION, THE PARTITIONS BEING ARRANGED SO THAT THE OPENING IN ADJACENT
References Cited (Backward Citations)
US2337137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-23 | 1965-04-24 | 1965-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-23 | 1969-04-24 | 1969-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-23 | 1973-04-24 | 1973-10-24 | $7700.00 | Window Closed / Lapsed |