US3419149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage removal plant
Assignee: Individual
•
Filing: 1966-02-03
•
Granted: 1968-12-31
•
Expires: 1986-02-03
Abstract
No abstract record available.
Inventors
- 👤 Robert D Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:56
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/12; C02F11/121; C02F11/123; C02F1/00; C02F1/28; C02F1/283
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A WASTE TREATMENT SYSTEM COMPRISING, A SCREEN MEMBER SUPPORTED IN INCLINED RELATION, A FILTER HAVING COKE DISPOSED THEREIN BELOW SAID SCREEN A PLURALITY OF POLISHING CARTRIDGES CONNECTED IN SERIES, INLET MEANS TO ADMIT LIQUID WASTE CONTAINING GROSS SOLIDS AND ENTRAINED SOLIDS TO SAID SCREEN WHEREBY SAID GROSS SOLIDS ARE SCREENED FROM SAID WASTE AND SAID LIQUID AND ENTRAINED SOLIDS PASS TO SAID COKE FILTER, MEANS TO CONDUCT SAID LIQUID FROM SAID CHOKE FILTER TO SAID POLISHING CARTRIDGE FILTERS, AND MEANS TO REMOVE SAID GROSS SOLIDS FROM SAID SCREEN, SAID SCREEN COMPRISES A MESH BELT, SPACED PULLEYS ARE PROVIDED SUPPORTING SAID BELT, AND DRIVE MEANS CONNECTED TO ONE OF SAID PULLEYS TO DRIVE SAID BELT, SAID DRIVE MEANS AND PULLEYS COMPRISING SAID MEANS TO REMOVE SAID GROSS SOLIDS FROM SAID BELT.
Claim 2
Dependent Claim
130 words
A WASTE TREATMENT SYSTEM COMPRISING, A SCREEN MEMBER SUPPORTED IN INCLINED RELATION, A FILTER HAVING COKE DISPOSED THEREIN BELOW SAID SCREEN A PLURALITY OF POLISHING CARTRIDGES CONNECTED IN SERIES, INLET MEANS TO ADMIT LIQUID WASTE CONTAINING GROSS SOLIDS AND ENTRAINED SOLIDS TO SAID SCREEN WHEREBY SAID GROSS SOLIDS ARE SCREENED FROM SAID WASTE AND SAID LIQUID AND ENTRAINED SOLIDS PASS TO SAID COKE FILTER, MEANS TO CONDUCT SAID LIQUID FROM SAID CHOKE FILTER TO SAID POLISHING CARTRIDGE FILTERS, AND MEANS TO REMOVE SAID GROSS SOLIDS FROM SAID SCREEN, SAID SCREEN COMPRISES A MESH BELT, SPACED PULLEYS ARE PROVIDED SUPPORTING SAID BELT, AND DRIVE MEANS CONNECTED TO ONE OF SAID PULLEYS TO DRIVE SAID BELT, SAID DRIVE MEANS AND PULLEYS COMPRISING SAID MEANS TO REMOVE SAID GROSS SOLIDS FROM SAID BELT.
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) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |