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US3282422A
Expired / Lapsed
US
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Hydraulic classifying apparatus siphon control
Assignee: Dorr Oliver Inc
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Filing: 1963-01-14
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Granted: 1966-11-01
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Expires: 1983-01-14
Abstract
No abstract record available.
Inventors
- 👤 Victor R Reynolds
- 👤 Jr Augustus W Cummings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:42
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/62; B03B5/623
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
HYDRAULIC CLASSIFYING APPARATUS COMPRISING: A TANK, MEANS SUPPLYING SOLIDS TO SAID TANK TO BE CLASSIFIED, MEANS PROVIDING A TEETER COLUMN IN SAID TANK FOR RECEIVING AND CLASSIFYING THE SOLIDS ACCORDING TO SETTLING RATE, SAID LATTER MEANS INCLUDING LIQUID INTRODUCTION MEANS ADJACENT THE BASE OF THE TEETER COLUMN TO PROVIDE AN UPWARD FLOW OF LIQUID IN THE TEETER COLUMN TO ACCUMULATE SOLIDS OF PREDETERMINED SETTLING CHARACTERISTICS NEAR THE BASE OF THE TEETER COLUMN, SIPHON MEANS OPENING NEAR THE BASE OF THE COLUMN TO WITHDRAW THE ACCUMULATED SOLIDS, MEANS SUPPLYING DILUTION LIQUID TO SAID SIPHON MEANS TO FACILITATE THE SIPHONING OF THE SOLIDS, CONTROL MEANS OPERATIVELY CONNECTED TO BE RESPONSIVE TO THE DENSITY OF SOLIDS IN
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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |