US3271304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venturi aerator and aerating process for waste treatment
Assignee: Pacific Flush Tank Co
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Filing: 1964-06-26
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Granted: 1966-09-06
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Expires: 1984-06-26
Abstract
No abstract record available.
Inventors
- 👤 Joe M Valdespino
- 👤 Clifford B Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:34
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1278; C02F3/1294; B; B01; B01F; B01F23/00; B01F23/40; B01F23/45; B01F23/454; B01F25/00; B01F25/20; B01F25/21; B01F25/25; B01F25/50; B01F25/53; B01F23/20; B01F23/23; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S261/00; Y10S261/54; Y10S261/75
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
THE METHOD OF INTRODUCING AIR UNDER ATMOSPHERIC PRESSURE INTO A BODY OF LIQUID CONTAINED IN A TANK COMPRISING THE STEPS OF REMOVING LIQUID FROM SAID TANK, PUMPING THE REMOVED LIQUID THROUGH AN ELBOW TO CHANGE ITS DIRECTION OF FLOW, THEN THROUGH A SWIRLING MECHANISM TO IMPART A SWIRLING MOTION TO SAID LIQUID AND THEN FORCING THE SWIRLING LIQUID THROUGH A VENTURI TYPE ASPIRATOR HAVING A HIGH PRESSURE INLET PORTION, A CONSTRICTED THROAT PORTION AND A NEGATIVE PRESSURE DISCHARGE PORTION HAVING AN OUTLET, PROVIDING AN ORIFICE BETWEEN SAID OUTLET AND SAID THROAT PORTION IN COMMUNICATION WITH SAID DISCHARGE PORTION OF SAID ASPIRATOR, CONNECTING SAID ORIFICE TO A SOURCE OF AIR UNDER ATMOSPHERIC PRESSURE, AND DISCHARGING SAID LIQUID FROM SAID ASPIRATOR DIRECTLY INTO THE BODY OF LIQUID, WHEREBY THE NEGATIVE PRESSURE CREATED IN SAID DISCHARGE PORTION WILL DRAW AIR THROUGH SAID ORIFICE AND ENTRAIN SAID AIR IN THE LIQUID BEING DISCHARGED FROM SAID ASPIRATOR.
Claim 2
Independent Claim
152 words
THE METHOD OF INTRODUCING AIR UNDER ATMOSPHERIC PRESSURE INTO A BODY OF LIQUID CONTAINED IN A TANK COMPRISING THE STEPS OF REMOVING LIQUID FROM SAID TANK, PUMPING THE REMOVED LIQUID THROUGH AN ELBOW TO CHANGE ITS DIRECTION OF FLOW, THEN THROUGH A SWIRLING MECHANISM TO IMPART A SWIRLING MOTION TO SAID LIQUID AND THEN FORCING THE SWIRLING LIQUID THROUGH A VENTURI TYPE ASPIRATOR HAVING A HIGH PRESSURE INLET PORTION, A CONSTRICTED THROAT PORTION AND A NEGATIVE PRESSURE DISCHARGE PORTION HAVING AN OUTLET, PROVIDING AN ORIFICE BETWEEN SAID OUTLET AND SAID THROAT PORTION IN COMMUNICATION WITH SAID DISCHARGE PORTION OF SAID ASPIRATOR, CONNECTING SAID ORIFICE TO A SOURCE OF AIR UNDER ATMOSPHERIC PRESSURE, AND DISCHARGING SAID LIQUID FROM SAID ASPIRATOR DIRECTLY INTO THE BODY OF LIQUID, WHEREBY THE NEGATIVE PRESSURE CREATED IN SAID DISCHARGE PORTION WILL DRAW AIR THROUGH SAID ORIFICE AND ENTRAIN SAID AIR IN THE LIQUID BEING DISCHARGED FROM SAID ASPIRATOR.
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |