Patent US3315879A successfully refreshed from Google Patents.
US3315879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evacuation system
Assignee: Individual
•
Filing: 1966-04-22
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Granted: 1967-04-25
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Expires: 1986-04-22
Abstract
No abstract record available.
Inventors
- 👤 Irving C Jennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:32
CPC Classifications
F; F28; F28B; F28B9/00; F28B9/10; F01; F01B; F01B25/00; F04; F04C; F04C19/00; F04C19/004; F01B2250/00; F01B2250/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A SYSTEM FOR EVACUATING FLUID HAVING LIQUID AND GASEOUS PHASES, COMPRISING LIQUID RING PUMP MEANS HAVING SUCTION AND DISCHARGE PORTIONS AND FORMING A SECOND STAGE OF THE SYSTEM, JET DIFFUSER MEANS HAVING INLET AND OUTLET PORTIONS AND FORMING A FIRST STAGE OF THE SYSTEM, SAID JET DIFFUSER MEANS HAVING ITS OUTLET PORTION COMMUNICATING WITH SAID SUCTION PORTION OF SAID PUMP MEANS, SUPPLY CONDUIT MEANS COMMUNICATING WITH AND FEEDING THE FLUID TO SAID INLET PORTION OF SAID JET DIFFUSER MEANS, AND SEPARATING MEANS COMMUNICATING WITH SAID CONDUIT MEANS UPSTREAM OF SAID INLET PORTION OF SAID JET DIFFUSER MEANS FOR SEPARATING THE LIQUID PHASE FROM THE FLUID BEFORE IT REACHES SAID JET DIFFUSER MEANS, SAID SEPARATING MEANS HAVING MEANS COMMUNICATING WITH SAID SUCTION PORTION OF SAID PUMP MEANS, SO THAT THE SEPARATED LIQUID BYPASSES SAID JET DIFFUSER MEANS.
Claim 2
Independent Claim
136 words
A SYSTEM FOR EVACUATING FLUID HAVING LIQUID AND GASEOUS PHASES, COMPRISING LIQUID RING PUMP MEANS HAVING SUCTION AND DISCHARGE PORTIONS AND FORMING A SECOND STAGE OF THE SYSTEM, JET DIFFUSER MEANS HAVING INLET AND OUTLET PORTIONS AND FORMING A FIRST STAGE OF THE SYSTEM, SAID JET DIFFUSER MEANS HAVING ITS OUTLET PORTION COMMUNICATING WITH SAID SUCTION PORTION OF SAID PUMP MEANS, SUPPLY CONDUIT MEANS COMMUNICATING WITH AND FEEDING THE FLUID TO SAID INLET PORTION OF SAID JET DIFFUSER MEANS, AND SEPARATING MEANS COMMUNICATING WITH SAID CONDUIT MEANS UPSTREAM OF SAID INLET PORTION OF SAID JET DIFFUSER MEANS FOR SEPARATING THE LIQUID PHASE FROM THE FLUID BEFORE IT REACHES SAID JET DIFFUSER MEANS, SAID SEPARATING MEANS HAVING MEANS COMMUNICATING WITH SAID SUCTION PORTION OF SAID PUMP MEANS, SO THAT THE SEPARATED LIQUID BYPASSES SAID JET DIFFUSER MEANS.
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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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |