US3216622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling the quantities discharged during predetermined periods of one or more viscous liquids and apparatus for performing the method
Assignee: Individual
•
Filing: 1964-06-29
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Granted: 1965-11-09
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Drostholm Frede Hilmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:05
CPC Classifications
G; G01; G01F; G01F13/00; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/135; G05D11/136
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
AN APPARATUS FOR THE DISCHARGE OF AT LEAST ONE VISCOUS LIQUID IN PERIODS OF PREDETERMINED DURATION, COMPRISING DISCHARGE MEANS AND A CIRCULATION SYSTEM, SAID CIRCULATION SYSTEM COMPRISING A RESERVOIR FOR THE LIQUID TO BE DISCHARGED, A FLOW DUCT CONNECTING SAID RESERVOIR AND SAID COMMON DISCHARGE MEANS, A PUMP INSERTED IN SAID FLOW DUCT, FIRST VALVE MEANS IN SAID COMMON DISCHARGE MEANS TO BLOCK THE FLOW OF LIQUID FROM SAID FLOW DUCT TO SAID COMMON DISCHARGE MEANS, A RETURN DUCT CONNECTING THE END OF SAID FLOW DUCT ADJACENT SAID COMMON DISCHARGE MEANS AND SAID RESERVOIR, SECOND VALVE MEANS INSERTED IN SAID RETURN DUCT ADJACENT SAID RESERVOIR, VOLUMERIC MEASURING MEANS CONNECTED TO SAID RETURN DUCT BETWEEN SAID COMMON DISCHARGE MEANS AND SAID SECOND VALVE MEANS, THIRD VALVE MEANS INSERTED BETWEEN SAID MEASURING MEANS AND THE POINT OF CONNECTION OF SAID MEASURING MEANS TO SAID RETURN DUCT, A COMPRESSED-AIR SOURCE CONNECTED TO SAID MEASURING MEANS AND FOURTH VALVE MEANS INSERTED BETWEEN SAID AIR SOURCE AND SAID MEASURING MEANS.
Claim 2
Independent Claim
165 words
AN APPARATUS FOR THE DISCHARGE OF AT LEAST ONE VISCOUS LIQUID IN PERIODS OF PREDETERMINED DURATION, COMPRISING DISCHARGE MEANS AND A CIRCULATION SYSTEM, SAID CIRCULATION SYSTEM COMPRISING A RESERVOIR FOR THE LIQUID TO BE DISCHARGED, A FLOW DUCT CONNECTING SAID RESERVOIR AND SAID COMMON DISCHARGE MEANS, A PUMP INSERTED IN SAID FLOW DUCT, FIRST VALVE MEANS IN SAID COMMON DISCHARGE MEANS TO BLOCK THE FLOW OF LIQUID FROM SAID FLOW DUCT TO SAID COMMON DISCHARGE MEANS, A RETURN DUCT CONNECTING THE END OF SAID FLOW DUCT ADJACENT SAID COMMON DISCHARGE MEANS AND SAID RESERVOIR, SECOND VALVE MEANS INSERTED IN SAID RETURN DUCT ADJACENT SAID RESERVOIR, VOLUMERIC MEASURING MEANS CONNECTED TO SAID RETURN DUCT BETWEEN SAID COMMON DISCHARGE MEANS AND SAID SECOND VALVE MEANS, THIRD VALVE MEANS INSERTED BETWEEN SAID MEASURING MEANS AND THE POINT OF CONNECTION OF SAID MEASURING MEANS TO SAID RETURN DUCT, A COMPRESSED-AIR SOURCE CONNECTED TO SAID MEASURING MEANS AND FOURTH VALVE MEANS INSERTED BETWEEN SAID AIR SOURCE AND SAID MEASURING MEANS.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |