US3360460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface aerator
Assignee: Individual
•
Filing: 1965-01-11
•
Granted: 1967-12-26
•
Expires: 1985-01-11
Abstract
No abstract record available.
Inventors
- 👤 Roy F Weston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:58
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/14; C02F3/16; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/234; B01F23/2342; B01F23/23421; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S261/00; Y10S261/71
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
224 words
A METHOD OF DISSOLVING GASES PRESENT ABOVE THE FREE SURFACE OF A BODY OF WASTE WATER WITH A GENERALLY HORIZONTAL PLATE OF IMPERFORATE CONSTRUCTION AT LEAST AT ITS CENTER PORTION, SAID PLATE HAVING A PLURALITY OF SPACEDAPART BLADES EXTENDING DOWNWARDLY FROM SAID PLATE AT LEAST PARTLY INWARDLY FROM THE PERIPHERY THEREOF, SAID METHOD COMPRISING SUBMERGING SAID PLATE SUBADJACENT THE FREE SURFACE OF THE WATER; ROATING SAID PLATE ABOUT A VERTICAL AXIS THROUGH ITS CENTER; AND ECONOMICALLY ENTRAINING GASES IN SAID WASTE WATER BY OPERATING IN A REGIME IN WHICH HIGH GAS DISSOLUTION OCCURS WITH LOW CONSUMPTION OF POWER BY SAID PLATE, SAID ENTRAINING OPERATION INCLUDING ADJUSTING THE SUBMERGENCE LEVEL AND SPEED OF ROTATION OF SAID PLATE TO EFFECT A RATIO OF SUBMERGENCE HEAD TO PERIPHERAL VELOCITY HEAD OF NOT SUBSTANTIALLY GREATER THAN 0.3 AND TO EFFECT A RATIO OF SUBMERGENCE HEAD PLUS BLADE HEIGHT TO PERIPHERAL VELOCITY HEAD WITHIN THE RANGE OF ABOUT 0.1 TO ABOUT 0.6, SAID ENTRAINING OPERATION INDUCING THE WATER TO FLOW OUTWARDLY ALONG SAID BLADES AND TO DEVELOP LOW PRESSURE AREAS AT THE TRAILING EDGES OF SAID BLADES AND SIMULTANEOUSLY INDUCING GAS WHICH IS ABOVE THE SURFACE OF THE BODY OF WATER TO CONTACT SUBSTANTIALLY THE ENTIRE UPPER SURFACE AND THE PERIPHERY OF SAID PLATE AND TO FLOW INTO THE LOW PRESSURE AREAS AT THE TRAILING SIDE OF SAID BLADES.
Claim 2
Independent Claim
224 words
A METHOD OF DISSOLVING GASES PRESENT ABOVE THE FREE SURFACE OF A BODY OF WASTE WATER WITH A GENERALLY HORIZONTAL PLATE OF IMPERFORATE CONSTRUCTION AT LEAST AT ITS CENTER PORTION, SAID PLATE HAVING A PLURALITY OF SPACEDAPART BLADES EXTENDING DOWNWARDLY FROM SAID PLATE AT LEAST PARTLY INWARDLY FROM THE PERIPHERY THEREOF, SAID METHOD COMPRISING SUBMERGING SAID PLATE SUBADJACENT THE FREE SURFACE OF THE WATER; ROATING SAID PLATE ABOUT A VERTICAL AXIS THROUGH ITS CENTER; AND ECONOMICALLY ENTRAINING GASES IN SAID WASTE WATER BY OPERATING IN A REGIME IN WHICH HIGH GAS DISSOLUTION OCCURS WITH LOW CONSUMPTION OF POWER BY SAID PLATE, SAID ENTRAINING OPERATION INCLUDING ADJUSTING THE SUBMERGENCE LEVEL AND SPEED OF ROTATION OF SAID PLATE TO EFFECT A RATIO OF SUBMERGENCE HEAD TO PERIPHERAL VELOCITY HEAD OF NOT SUBSTANTIALLY GREATER THAN 0.3 AND TO EFFECT A RATIO OF SUBMERGENCE HEAD PLUS BLADE HEIGHT TO PERIPHERAL VELOCITY HEAD WITHIN THE RANGE OF ABOUT 0.1 TO ABOUT 0.6, SAID ENTRAINING OPERATION INDUCING THE WATER TO FLOW OUTWARDLY ALONG SAID BLADES AND TO DEVELOP LOW PRESSURE AREAS AT THE TRAILING EDGES OF SAID BLADES AND SIMULTANEOUSLY INDUCING GAS WHICH IS ABOVE THE SURFACE OF THE BODY OF WATER TO CONTACT SUBSTANTIALLY THE ENTIRE UPPER SURFACE AND THE PERIPHERY OF SAID PLATE AND TO FLOW INTO THE LOW PRESSURE AREAS AT THE TRAILING SIDE OF SAID BLADES.
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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |