US2647869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clarification
Assignee: PROCESS ENGINEERS Inc
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Filing: 1949-11-03
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Granted: 1953-08-04
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Expires: 1969-11-03
Abstract
No abstract record available.
Inventors
- 👤 Earl M Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:43
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0018; B01D21/0039; B01D21/0042; B01D21/02; B01D21/04; B01D21/06; B01D21/18; B01D21/183; B01D21/24; B01D21/2405; B01D21/2427; B01D21/2433; B01D21/2438; B01D21/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
IN A CLARIFIER INCLUDING A TANK ADAPTED TO CONTAIN A POOL OF LIQUID TO BE CLARIFIED, A SEDIMENT DISCHARGE MEANS IN THE BOTTOM OF THE TANK NEAR ITS CENTER, AND A LIQUID DISCHARGE MEANS AT ITS UPPER PERIPHERY, THE COMBINATION WHICH COMPRISES RAKING MEANS EXTENDING JUST ABOVE THE BOTTOM OF THE TANK AND ROTATABLE ABOUT A SUBSTANTIALLY CENTRAL AXIS SO AS TO RAKE SEDIMENT ALONG THE TANK BOTTOM INTO THE DISCHARGE MEANS, A RELATIVELY THICK ANNULAR BAFFLE IN THE TANK WITH ITS CENTER CORRESPONDING SUBSTANTIALLY TO THE AXIS OF THE RAKING MEANS AND EXTENDING FROM A LEVEL SLIGHTLY ABOVE THE TANK BOTTOM TO A LEVEL ABOVE THAT OF THE POOL OF LIQUID IN THE TANK AND DIVIDING THE TANK INTO AN INNER COMPARTMENT AND AN OUTER ANNULAR COMPARTMENT, A PLURALITY OF SUPPORTS DISPOSED BETWEEN THE BAFFLE AND THE BOTTOM FOR HOLDING THE BAFFLE ABOVE THE BOTTOM, THE SUPPORTS BEING RELATIVELY NARROW AND SPACED FROM EACH OTHER SO AS TO LEAVE RELATIVELY WIDE, THICK PORTS BETWEEN THEM AT THE BOTTOM AND OPEN ABOUT A LARGE PROPORTION OF THE PERIPHERY OF THE BAFFLE SO AS TO PERMIT THE PASSAGE UNDER THE
Claim 2
Dependent Claim
189 words
IN A CLARIFIER INCLUDING A TANK ADAPTED TO CONTAIN A POOL OF LIQUID TO BE CLARIFIED, A SEDIMENT DISCHARGE MEANS IN THE BOTTOM OF THE TANK NEAR ITS CENTER, AND A LIQUID DISCHARGE MEANS AT ITS UPPER PERIPHERY, THE COMBINATION WHICH COMPRISES RAKING MEANS EXTENDING JUST ABOVE THE BOTTOM OF THE TANK AND ROTATABLE ABOUT A SUBSTANTIALLY CENTRAL AXIS SO AS TO RAKE SEDIMENT ALONG THE TANK BOTTOM INTO THE DISCHARGE MEANS, A RELATIVELY THICK ANNULAR BAFFLE IN THE TANK WITH ITS CENTER CORRESPONDING SUBSTANTIALLY TO THE AXIS OF THE RAKING MEANS AND EXTENDING FROM A LEVEL SLIGHTLY ABOVE THE TANK BOTTOM TO A LEVEL ABOVE THAT OF THE POOL OF LIQUID IN THE TANK AND DIVIDING THE TANK INTO AN INNER COMPARTMENT AND AN OUTER ANNULAR COMPARTMENT, A PLURALITY OF SUPPORTS DISPOSED BETWEEN THE BAFFLE AND THE BOTTOM FOR HOLDING THE BAFFLE ABOVE THE BOTTOM, THE SUPPORTS BEING RELATIVELY NARROW AND SPACED FROM EACH OTHER SO AS TO LEAVE RELATIVELY WIDE, THICK PORTS BETWEEN THEM AT THE BOTTOM AND OPEN ABOUT A LARGE PROPORTION OF THE PERIPHERY OF THE BAFFLE SO AS TO PERMIT THE PASSAGE UNDER THE
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) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |