US2532973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for proportioning metaphosphate to a liquid
Assignee: Individual
•
Filing: 1948-02-25
•
Granted: 1950-12-05
•
Expires: 1968-02-25
Abstract
No abstract record available.
Inventors
- 👤 Wallentin Ake Henning
- 👤 Vesterlund Johan Heimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:16
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/688; B; B01; B01F; B01F21/00; B01F21/20; B01F21/22; B01F25/00; B01F25/30; B01F25/31; B01F25/316; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3112; Y10T137/8593; Y10T137/87265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
211 words
A APPARATUS FOR PROPORTIONING METAPHOSPHATE TO A LIQUID FLOWING THROUGH A CONDUIT, COMPRISING IN COMBINATION A SUBSTANTIALLY ANNULAR STORAGE CHAMBER ADAPTED TO RECEIVE METAPHOSPHATE, THE BOTTOM OF SAID CHAMBER HAVING AT LEAST ONE OPENING, A RESERVOIR LOCATED BELOW SAID CHAMBER AND HAVING A SMALLER DEPTH THAN SAID CHAMBER, SAID RESERVOIR BEING ADAPTED TO RECEIVE, THROUGH SAID OPENING, STRONG METAPHOSPHATE SOLUTION SINKING DOWN FROM SAID CHAMBER, A MIXING CHAMBER LOCATED WITHINT HE INNER WALLS OF SAID STORAGE CHAMBER AND ABOVE SAID RESERVOIR AND HAVING A BOTTOM AND SIDE WALLS WHICH SLIGHTLY PROJECT BELOW THE BOTTOM OF THE MIXING CHAMBER, AN INLET PIPE FOR SUPPLYING TO THE APPARATUS A SMALL PORTION OF THE LIQUID FLOWING THROUGH SAID CONDUIT, SAID PIPE EXTENDING DOWNWARDS THROUGH THE BOTTOM OF SAID MIXING CHAMBER AND OPENING NEAR THE TOP OF SAID RESERVOIR, THE BOTTOM OF SAID MIXING CHAMBER HAVING AN INLET OPENING FOR LIQUID ADMIXED WITH METAPHOSPHATE, SAID INLET OPENING CONNECTING THE RESERVOIR WITH THE MIXING CHAMBER, AND MEANS FOR CONNECTING SAID MIXING CHAMBER WITH SAID CONDUIT, SAID INLET PIPE PROJECTING INTO SAID CONDUIT SO AS TO PROVIDE A TAKEUP FOR PART OF THE LIQUID IN THE CONDUIT AND TO CAUSE SAID PART TO FLOW THROUGH THE INLET PIPE, RESERVOIR AND MIXING CHAMBER, AND BACK TO SAID CONDUIT.
Claim 2
Independent Claim
211 words
A APPARATUS FOR PROPORTIONING METAPHOSPHATE TO A LIQUID FLOWING THROUGH A CONDUIT, COMPRISING IN COMBINATION A SUBSTANTIALLY ANNULAR STORAGE CHAMBER ADAPTED TO RECEIVE METAPHOSPHATE, THE BOTTOM OF SAID CHAMBER HAVING AT LEAST ONE OPENING, A RESERVOIR LOCATED BELOW SAID CHAMBER AND HAVING A SMALLER DEPTH THAN SAID CHAMBER, SAID RESERVOIR BEING ADAPTED TO RECEIVE, THROUGH SAID OPENING, STRONG METAPHOSPHATE SOLUTION SINKING DOWN FROM SAID CHAMBER, A MIXING CHAMBER LOCATED WITHINT HE INNER WALLS OF SAID STORAGE CHAMBER AND ABOVE SAID RESERVOIR AND HAVING A BOTTOM AND SIDE WALLS WHICH SLIGHTLY PROJECT BELOW THE BOTTOM OF THE MIXING CHAMBER, AN INLET PIPE FOR SUPPLYING TO THE APPARATUS A SMALL PORTION OF THE LIQUID FLOWING THROUGH SAID CONDUIT, SAID PIPE EXTENDING DOWNWARDS THROUGH THE BOTTOM OF SAID MIXING CHAMBER AND OPENING NEAR THE TOP OF SAID RESERVOIR, THE BOTTOM OF SAID MIXING CHAMBER HAVING AN INLET OPENING FOR LIQUID ADMIXED WITH METAPHOSPHATE, SAID INLET OPENING CONNECTING THE RESERVOIR WITH THE MIXING CHAMBER, AND MEANS FOR CONNECTING SAID MIXING CHAMBER WITH SAID CONDUIT, SAID INLET PIPE PROJECTING INTO SAID CONDUIT SO AS TO PROVIDE A TAKEUP FOR PART OF THE LIQUID IN THE CONDUIT AND TO CAUSE SAID PART TO FLOW THROUGH THE INLET PIPE, RESERVOIR AND MIXING CHAMBER, AND BACK TO SAID CONDUIT.
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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) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |