US3109875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aeration apparatus
Assignee: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Filing: 1961-06-21
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Granted: 1963-11-05
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Expires: 1981-06-21
Abstract
No abstract record available.
Inventors
- 👤 Schramm Paul
- 👤 Fechter Leonhard
- 👤 Baars Johan Kornelis
- 👤 Muskat Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:36
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/14; C02F3/18; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/234; B01F23/2342; B01F27/00; B01F27/60; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S261/00; Y10S261/71
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
AN AERATION APPARATUS FOR THE TREATMENT OF SEWAGE, COMPRISING AN OPEN TANK CONTAINING SEWAGE LIQUID AND A CYLINDRICAL ROTOR MOUNTED ON A HORIZONTAL AXIS PARALLEL TO THE SURFACE OF THE LIQUID ABOVE THE LIQUID IN THE TANK, BEATING MEMBERS ARRANGED IN APPROXIMATELY DIAMETRICALLY OPPOSITE ROWS ON SAID ROTOR DIPPING INTO SAID SEWAGE LIQUID ABOUT ONE-FOURTH TO ONE-SIXTH OF THE DIAMETER OF SAID ROTOR MEASURED FROM THE OUTER IND OF ONE BEATING MEMBER TO THE OUTER END OF A DIAMETRICALLY OPPOSITE BEATING MEMBER WHEREIN SAID ROTOR IS APPROXIMTELY 50 CM. IN DIAMETER, MEANS TO ROTATE SAID ROTOR ABOUT ITS AXIS, SAID ROTOR COMPRISING A PLURALITY OF BEATING MEMBERS MOUNTED IN A PLURALITY OF ROWS IN A FIXED POSITION
Claim 2
Dependent Claim
117 words
AN AERATION APPARATUS FOR THE TREATMENT OF SEWAGE, COMPRISING AN OPEN TANK CONTAINING SEWAGE LIQUID AND A CYLINDRICAL ROTOR MOUNTED ON A HORIZONTAL AXIS PARALLEL TO THE SURFACE OF THE LIQUID ABOVE THE LIQUID IN THE TANK, BEATING MEMBERS ARRANGED IN APPROXIMATELY DIAMETRICALLY OPPOSITE ROWS ON SAID ROTOR DIPPING INTO SAID SEWAGE LIQUID ABOUT ONE-FOURTH TO ONE-SIXTH OF THE DIAMETER OF SAID ROTOR MEASURED FROM THE OUTER IND OF ONE BEATING MEMBER TO THE OUTER END OF A DIAMETRICALLY OPPOSITE BEATING MEMBER WHEREIN SAID ROTOR IS APPROXIMTELY 50 CM. IN DIAMETER, MEANS TO ROTATE SAID ROTOR ABOUT ITS AXIS, SAID ROTOR COMPRISING A PLURALITY OF BEATING MEMBERS MOUNTED IN A PLURALITY OF ROWS IN A FIXED POSITION
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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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |