US3228531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Septic tank
Assignee: Individual
•
Filing: 1962-05-28
•
Granted: 1966-01-11
•
Expires: 1982-05-28
Abstract
No abstract record available.
Inventors
- 👤 Chester F Proudman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:10
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
221 words
IN A SPETIC TANK FOR THE TREATMENT OF RESIDENTIAL HOUSEHOLD SEWAGE, A STRUCTURE TO PROVIDE FOR A DIRECTED FLOW A EFFLUENT SUBSTANTIALLY WITHIN AN UPPER HORIZONTAL ZONE AND TO PROVIDE FOR AN INDEPENDENTLY DIRECTED FLOW OF EFFLUENT SUBSTANTIALLY WITHIN A LOWER HORIZONTAL ZONE ADJACENT TO THE FLOOR OF SAID TANK AND COMPRISING AT LEAST; (A) A FLOOR AND A COVER FOR SAID TANK. (B) AN INITIAL COMPARTMENT, OF A SERIES, HAVING AN ELEVATED INLET COMPARTMENT, OF A SERIES, HAVING AN COMPARTMENT; (C) A PLURALITY OF CONNECTED COMPARTMENTS IN SAID SERIES FOR FURTHER TREATMENT OF SAID EFFLUENT; (D) LOWER PORTS CONNECTING ALL COMPARTMENTS IN THE SERIES, SAID PORTS BEING ADJACENT TO THE FLOOR OF THE SAID TANK AND CONFINED ENTRIELY WITHIN THE SAID LOWER LOWER HORIZONTAL ZONE OF SAID TANK; (E) UPPER PORTS CONNECTING ALL COMPARTMENTS, EXCEPT THE INITIAL COMPARTMENT, SAID PORTS BEING CONFINED ENTIRELY WITHIN THE SAID UPPER HORIZONTAL ZONE OF SAID TANK; (F) THE PORTS IN SAID UPPER HORIZONTAL ZONE BEING VERTICALLY SEPERATED FROM THE PORTS IN SAID LOWER HORIZONTAL ZONE TO OBTAIN SUBSTANTIALLY INDEPENDENT FLOW OF EFFLUENT IN EACH OF SAID ZONES AND (G) AN OUTLET FOR EFFLUENT FROM THE LAST COMPARTMENT IN SAID TANK, THE PLURALITY OF COMPARTMENTS IN SAID TANK BEING SEPARATED FROM ONE ANOTHER BY PARTITION MEANS WHICH INCLUDE THE UPPER AND LOWER PORTS, SAID PARTI-
Claim 2
Dependent Claim
221 words
IN A SPETIC TANK FOR THE TREATMENT OF RESIDENTIAL HOUSEHOLD SEWAGE, A STRUCTURE TO PROVIDE FOR A DIRECTED FLOW A EFFLUENT SUBSTANTIALLY WITHIN AN UPPER HORIZONTAL ZONE AND TO PROVIDE FOR AN INDEPENDENTLY DIRECTED FLOW OF EFFLUENT SUBSTANTIALLY WITHIN A LOWER HORIZONTAL ZONE ADJACENT TO THE FLOOR OF SAID TANK AND COMPRISING AT LEAST; (A) A FLOOR AND A COVER FOR SAID TANK. (B) AN INITIAL COMPARTMENT, OF A SERIES, HAVING AN ELEVATED INLET COMPARTMENT, OF A SERIES, HAVING AN COMPARTMENT; (C) A PLURALITY OF CONNECTED COMPARTMENTS IN SAID SERIES FOR FURTHER TREATMENT OF SAID EFFLUENT; (D) LOWER PORTS CONNECTING ALL COMPARTMENTS IN THE SERIES, SAID PORTS BEING ADJACENT TO THE FLOOR OF THE SAID TANK AND CONFINED ENTRIELY WITHIN THE SAID LOWER LOWER HORIZONTAL ZONE OF SAID TANK; (E) UPPER PORTS CONNECTING ALL COMPARTMENTS, EXCEPT THE INITIAL COMPARTMENT, SAID PORTS BEING CONFINED ENTIRELY WITHIN THE SAID UPPER HORIZONTAL ZONE OF SAID TANK; (F) THE PORTS IN SAID UPPER HORIZONTAL ZONE BEING VERTICALLY SEPERATED FROM THE PORTS IN SAID LOWER HORIZONTAL ZONE TO OBTAIN SUBSTANTIALLY INDEPENDENT FLOW OF EFFLUENT IN EACH OF SAID ZONES AND (G) AN OUTLET FOR EFFLUENT FROM THE LAST COMPARTMENT IN SAID TANK, THE PLURALITY OF COMPARTMENTS IN SAID TANK BEING SEPARATED FROM ONE ANOTHER BY PARTITION MEANS WHICH INCLUDE THE UPPER AND LOWER PORTS, SAID PARTI-
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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |