Patent US3302586A successfully refreshed from Google Patents.
US3302586A
Expired / Lapsed
US
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Procedure and device to lift liquids by means of pressure fluids
Assignee: Individual
•
Filing: 1964-03-02
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Granted: 1967-02-07
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Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Brugnoli Vincenzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:49
CPC Classifications
F; F04; F04B; F04B47/00; F04B47/02; F04B47/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A PNEUMATIC LIQUID-LIFTING DEVICE WHICH COMPRISES, IN COMBINATION: (A) A SUBSTANTIALLY CLOSED CONTAINER HAVING A TOP PORTION AND A BOTTOM PORTION; (B) SUPPLY MEANS FOR ADMITTING A LIQUID TO SAID CONTAINER; (C) AN ELONGATED CONDUIT HAVING TWO LONGITUDINAL END PORTIONS AND ANOTHER PORTION INTERMEDIATE SAID END PORTIONS, ONE OF SAID END PORTIONS HAVING AN ORIFICE IN THE BOTTOM PORTION OF SAID CONTAINER; (D) A SOURCE OF GAS UNDER PRESSURE COMMUNICATING WITH SAID CONTAINER; (E) VALVE MEANS INTERPOSED BETWEEN THE TOP PORTION OF SAID CONTAINER AND SAID INTERMEDIATE PORTION OF SAID CONDUIT; AND (F) VALVE ACTUATING MEANS RESPONSIVE TO THE LIQUID LEVEL IN SAID CONTAINER FOR OPENING SAID VALVE MEANS IF THE LIQUID LEVEL IN SAID CONTAINER IS BELOW A PREDETERMINED VALUE, AND FOR CLOSING SAID VALVE MEANS IF SAID LIQUID LEVEL IS ABOVE SAID VALUE.
Claim 2
Dependent Claim
135 words
A PNEUMATIC LIQUID-LIFTING DEVICE WHICH COMPRISES, IN COMBINATION: (A) A SUBSTANTIALLY CLOSED CONTAINER HAVING A TOP PORTION AND A BOTTOM PORTION; (B) SUPPLY MEANS FOR ADMITTING A LIQUID TO SAID CONTAINER; (C) AN ELONGATED CONDUIT HAVING TWO LONGITUDINAL END PORTIONS AND ANOTHER PORTION INTERMEDIATE SAID END PORTIONS, ONE OF SAID END PORTIONS HAVING AN ORIFICE IN THE BOTTOM PORTION OF SAID CONTAINER; (D) A SOURCE OF GAS UNDER PRESSURE COMMUNICATING WITH SAID CONTAINER; (E) VALVE MEANS INTERPOSED BETWEEN THE TOP PORTION OF SAID CONTAINER AND SAID INTERMEDIATE PORTION OF SAID CONDUIT; AND (F) VALVE ACTUATING MEANS RESPONSIVE TO THE LIQUID LEVEL IN SAID CONTAINER FOR OPENING SAID VALVE MEANS IF THE LIQUID LEVEL IN SAID CONTAINER IS BELOW A PREDETERMINED VALUE, AND FOR CLOSING SAID VALVE MEANS IF SAID LIQUID LEVEL IS ABOVE SAID VALUE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |