US2805774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid separation apparatus
Assignee: Individual
•
Filing: 1953-04-20
•
Granted: 1957-09-10
•
Expires: 1973-04-20
Abstract
No abstract record available.
Inventors
- 👤 David E Griswold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:31
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; B01D17/04; B01D17/045; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7313; Y10T137/7316; Y10T137/7319; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/7374
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
APPARATUS FOR SEPARATING TWO IMMISCIBLE LIQUIDS, ONE OF WHICH HAS A GREATER SPECIFIC GRAVITY THAN THE OTHER, COMPRISING: A SEPARATOR CASING HAVING AN INLET FOR SAID LIQUIDS AND AN OUTLET FOR THE LIGHTER OF SAID LIQUIDS; MEANS PROVIDING A CHAMBER COMMUNICATING WITH SAID CASING IN WHICH HEAVIER LIQUID COLLECTS; CLOSURE MEANS CLOSING THE LOWER END OF SAID CHAMBER INCLUDING A DUMP VALVE HAVING AN INLET, OPENING INTO THE INTERIOR OF SAID CHAMBER AND AN OUTLET, OPENING EXTERIORLY OF SAID CHAMBER, SAID DUMP VALUE BEING FLUID PRESSURE OPERABLE AND ADAPTED TO DRAIN THE HEAVIER LIQUID FROM SAID CHAMBER; AND MEANS IN SAID CHAMBER INCLUDING A PILOT VALVE RESPONSIVE TO VARIATIONS IN THE LEVEL OF THE HEAVIER LIQUID FOR CONTROLLING THE SUPPLY OF OPERATING FLUID TO, AND THE EXHAUSH OF OPERATING FLUID FROM, SAID DUMP VALVE FOR CONTROLLING THE OPENING AND CLOSING OF SAID DUMP VALVE IN ACCORDANCE WITH VARIATIONS IN THE LEVEL OF THE HEAVIER LIQUID IN SAID CHAMBER.
Claim 2
Dependent Claim
158 words
APPARATUS FOR SEPARATING TWO IMMISCIBLE LIQUIDS, ONE OF WHICH HAS A GREATER SPECIFIC GRAVITY THAN THE OTHER, COMPRISING: A SEPARATOR CASING HAVING AN INLET FOR SAID LIQUIDS AND AN OUTLET FOR THE LIGHTER OF SAID LIQUIDS; MEANS PROVIDING A CHAMBER COMMUNICATING WITH SAID CASING IN WHICH HEAVIER LIQUID COLLECTS; CLOSURE MEANS CLOSING THE LOWER END OF SAID CHAMBER INCLUDING A DUMP VALVE HAVING AN INLET, OPENING INTO THE INTERIOR OF SAID CHAMBER AND AN OUTLET, OPENING EXTERIORLY OF SAID CHAMBER, SAID DUMP VALUE BEING FLUID PRESSURE OPERABLE AND ADAPTED TO DRAIN THE HEAVIER LIQUID FROM SAID CHAMBER; AND MEANS IN SAID CHAMBER INCLUDING A PILOT VALVE RESPONSIVE TO VARIATIONS IN THE LEVEL OF THE HEAVIER LIQUID FOR CONTROLLING THE SUPPLY OF OPERATING FLUID TO, AND THE EXHAUSH OF OPERATING FLUID FROM, SAID DUMP VALVE FOR CONTROLLING THE OPENING AND CLOSING OF SAID DUMP VALVE IN ACCORDANCE WITH VARIATIONS IN THE LEVEL OF THE HEAVIER LIQUID IN SAID CHAMBER.
References Cited (Backward Citations)
US680852A
Cited
US763741A
Cited
US1017178A
Cited
US1948543A
Cited
US1987666A
Cited
US2193720A
Cited
US2417994A
Cited
US2452615A
Cited
US2609099A
Cited
US2525154A
Cited
US2597475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |