US2560978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for aerating water
Assignee: Individual
•
Filing: 1947-01-17
•
Granted: 1951-07-17
•
Expires: 1967-01-17
Abstract
No abstract record available.
Inventors
- 👤 Persson Alef Ruben
- 👤 Naucler Johan Olof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:18
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/232; B01F23/2321
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A METHOD OF AERATING SUPPLY LIQUIDS HAVING A TEMPERATURE CLOSE TO THE FREEZING POINT THEREOF WITH ATMOSPHERIC AIR INITIALLY HAVING A TEMPERATURE BELOW SAID FREEZING POINT COMPRISING THE STEPS OF PASSING SAID SUPPLY LIQUID IN THE FORM OF OF A FLOWING LAYER ACROSS A PERFORATED STRAINER PLATE, PASSING A GIVEN BODY OF SAID ATMOSPHERIC AIR HAVING AN INITIAL TEMPERATURE BELOW THE FREEZING POINT OF SAID LIQUID THROUGH THE PERFORATIONS OF SAID STRAINER PLATE AND THROUGH SAID LAYER OF LIQUID, THE SIZE AND SPACING OF THE PERFORATIONS OF SAID STRAINER PLATE BEING SO SELECTED THAT SAID PASSAGE OF AIR THERETHROUGH AND THROUGH SAID LAYER OF LIQUID FORMS A FOAM OF POLYHEDRIC BUBBLES, REPEATING SUCH PASSAGE OF AT LEAST A PORTION OF SAID BODY OF AIR, AND SO ADJUSTING THE FLOW OF AIR AND LIQUID THAT A GIVEN VOLUME OF LIQUID IS PASSED THROUGH BY A TOTAL VOLUME OF AIR AT LEAST TEN TIMES THE SAID VOLUME OF LIQUID.
Claim 2
Independent Claim
157 words
A METHOD OF AERATING SUPPLY LIQUIDS HAVING A TEMPERATURE CLOSE TO THE FREEZING POINT THEREOF WITH ATMOSPHERIC AIR INITIALLY HAVING A TEMPERATURE BELOW SAID FREEZING POINT COMPRISING THE STEPS OF PASSING SAID SUPPLY LIQUID IN THE FORM OF OF A FLOWING LAYER ACROSS A PERFORATED STRAINER PLATE, PASSING A GIVEN BODY OF SAID ATMOSPHERIC AIR HAVING AN INITIAL TEMPERATURE BELOW THE FREEZING POINT OF SAID LIQUID THROUGH THE PERFORATIONS OF SAID STRAINER PLATE AND THROUGH SAID LAYER OF LIQUID, THE SIZE AND SPACING OF THE PERFORATIONS OF SAID STRAINER PLATE BEING SO SELECTED THAT SAID PASSAGE OF AIR THERETHROUGH AND THROUGH SAID LAYER OF LIQUID FORMS A FOAM OF POLYHEDRIC BUBBLES, REPEATING SUCH PASSAGE OF AT LEAST A PORTION OF SAID BODY OF AIR, AND SO ADJUSTING THE FLOW OF AIR AND LIQUID THAT A GIVEN VOLUME OF LIQUID IS PASSED THROUGH BY A TOTAL VOLUME OF AIR AT LEAST TEN TIMES THE SAID VOLUME OF LIQUID.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |