Patent US3108738A successfully refreshed from Google Patents.
US3108738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-ring gas pumps
Assignee: Siemen and Hinsch GmbH
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Filing: 1959-12-21
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Granted: 1963-10-29
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Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 Luhmann Reinhold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:11
CPC Classifications
F; F04; F04C; F04C19/00; F04C19/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A LIQUID RING GAS PUMP HAVING AT LEAST ONE STAGE IN WHICH AT EACH STAGE THERE IS PROVIDED A CASING, AN ECCENTRALLY ROTATABLE MOUNTED VANED IMPELLER WITHIN SAID CASING, A SUCTION CHAMBER, AND A PRESSURE CHAMBER WITHIN SAID CASING, GAS AND LIQUID INLETS IN SAID SUCTION CHAMBER, GAS AND LIQUID OUTLETS IN SAID PRESSURE CHAMBER, MEANS FOR INTRODUCING GAS AND LIQUID INTO SAID SUCTION CHAMBER AND FOR DISCHARGING SAID GAS AND LIQUID THROUGH SAID GAS AND LIQUID OUTLETS IN SAID PRESSURE CHAMBER, SAID CASING HAVING A SUCTION SLOT BETWEEN SAID SUCTION CHAMBER AND SAID IMPELLER AND A PRESSURE SLOT BETWEEN SAID IMPELLER
Claim 2
Dependent Claim
102 words
A LIQUID RING GAS PUMP HAVING AT LEAST ONE STAGE IN WHICH AT EACH STAGE THERE IS PROVIDED A CASING, AN ECCENTRALLY ROTATABLE MOUNTED VANED IMPELLER WITHIN SAID CASING, A SUCTION CHAMBER, AND A PRESSURE CHAMBER WITHIN SAID CASING, GAS AND LIQUID INLETS IN SAID SUCTION CHAMBER, GAS AND LIQUID OUTLETS IN SAID PRESSURE CHAMBER, MEANS FOR INTRODUCING GAS AND LIQUID INTO SAID SUCTION CHAMBER AND FOR DISCHARGING SAID GAS AND LIQUID THROUGH SAID GAS AND LIQUID OUTLETS IN SAID PRESSURE CHAMBER, SAID CASING HAVING A SUCTION SLOT BETWEEN SAID SUCTION CHAMBER AND SAID IMPELLER AND A PRESSURE SLOT BETWEEN SAID IMPELLER
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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |