US2768136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas discharge device for sewage digestion tanks
Assignee: Pacific Flush Tank Co
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Filing: 1953-12-23
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Granted: 1956-10-23
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Expires: 1973-12-23
Abstract
No abstract record available.
Inventors
- 👤 Carl D Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:15
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/28; Y; Y10; Y10S; Y10S210/00; Y10S210/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
128 words
IN A SLUDGE DIGESTEROF THE TYPE INCLUDING A TANK AND A COVER FOR SAID TANK, A DEVICE FOR DISCHARGING GAS INTO SAID DIGESTER COMPRISING A TUBULAR CASING IN SAID COVER WITH ITS LOWER END OPENING INTO SAID DIGESTER AND ITS UPPER END OPENING EXTERNALLY OF SAID DIGESTER, A WALL DEFINING WITH SAID CASING A CHAMBER ABOVE SAID WALL, AN INLET PIPE LEADING INTO SAID CHAMBER, AN OUTLET PIPE MOUNTED IN SAID CASING FOR REMOVAL THEREFROM WITHOUT DISTURBING THE CONNECTING BETWEEN SAID INLET PIPE AND SAID CASING, SAID OUTLET PIPE OPENING INTO SAID CHAMBER AND EXTENDING THROUGH SAID WALL AND OPENING INTO SAID DIGESTER, A CLOSURE REMOVABLY CLOSING THE UPPER END OF SAID CASING AND MEANS CONNECTING SAID OUTLET PIPE TO SAID CLOSURE FOR REMOVAL THEREWITH FROM SAID CASING.
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) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |