Patent US2841297A successfully refreshed from Google Patents.
US3166240A
Expired / Lapsed
US
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Pump
Assignee: Leybold Holding AG
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Filing: 1961-12-18
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Granted: 1965-01-19
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Expires: 1981-12-18
Abstract
No abstract record available.
Inventors
- 👤 Rollinger Willy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:56
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/32; F01; F01C; F01C1/00; F01C1/02; F01C1/04; F04C27/00; F04C27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
AN OIL SEALED ROTARY PUMP ASSEMBLY, COMPRISING, IN COMBINATION: (A) A PUMP HOUSING INCLUDING A ROTARY PUMPING MECHANISM HAVING AN INLET PORT AND A LATERALLY ARRANGED OUTLET VALVE, (B) AN OIL RESERVOIR HOUSING LATERALLY DETACHABLE FROM SAID PUMP HOUSING AND CONTAINING AN OIL SEPARATING SECTION, AND AN OIL SUPPLY SECTION FOR SUPERPOSING A VOLUME OF OIL ON SAID OUTLET VALVE, (C) AN OUTLET CHAMBER IN SAID PUMP HOUSING IN COMMUNICATION WITH SAID OUTLET VALVE VIA SAID OIL SUPPLY SECTION IN SAID DETACHABLE OIL RESERVOIR HOUSING, AND (D) AN INLET CHAMBER IN SAID PUMP HOUSING IN COMMUNICATION WITH SAID INLET PORT.
Claim 2
Dependent Claim
100 words
AN OIL SEALED ROTARY PUMP ASSEMBLY, COMPRISING, IN COMBINATION: (A) A PUMP HOUSING INCLUDING A ROTARY PUMPING MECHANISM HAVING AN INLET PORT AND A LATERALLY ARRANGED OUTLET VALVE, (B) AN OIL RESERVOIR HOUSING LATERALLY DETACHABLE FROM SAID PUMP HOUSING AND CONTAINING AN OIL SEPARATING SECTION, AND AN OIL SUPPLY SECTION FOR SUPERPOSING A VOLUME OF OIL ON SAID OUTLET VALVE, (C) AN OUTLET CHAMBER IN SAID PUMP HOUSING IN COMMUNICATION WITH SAID OUTLET VALVE VIA SAID OIL SUPPLY SECTION IN SAID DETACHABLE OIL RESERVOIR HOUSING, AND (D) AN INLET CHAMBER IN SAID PUMP HOUSING IN COMMUNICATION WITH SAID INLET PORT.
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) | 1968-01-19 | 1968-07-20 | 1969-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-19 | 1972-07-20 | 1973-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-19 | 1976-07-20 | 1977-01-19 | $7700.00 | Window Closed / Lapsed |