US3185102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vane pump sealing glands
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1964-01-13
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Granted: 1965-05-25
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Expires: 1984-01-13
Abstract
No abstract record available.
Inventors
- 👤 Donald W Partain
- 👤 James E Yingst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:54
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0827; F01C21/0836
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A ROTARY VANE PUMP, A HOUSING HAVING AN INTERIOR CYLINDRICAL WALL AND PARALLEL SPACED END WALLS, AN ANNULAR ROTOR JOURNALLED FOR ROTATION WITHIN SAID HOUSING ABOUT AN AXIS ECCENTRIC OF THE AXIAL CENTER THEREOF, A PAIR OF VANES EXTENDING RADIALLY OF THE AXIAL CENTER OF SAID HOUSING AND MOUNTED FOR PIVOTAL MOVEMENT ABOUT SAID AXIS AND HAVING SURFACE CONTACT WITH SAID CYLINDRICAL WALL, SEALING GLANDS PIVOTALLY MOUNTED IN SAID ROTOR AND HAVING FACING FLAT FACES FORMING SLIDABLE GUIDES FOR SAID VANES, AND MEANS INDEPENDENT OF SAID VANES EXERTING SEPARATING FORCES ON SAID SEALING GLANDS AND BIASING THE FACING FLAT FACES OF SAID SEALING GLANDS OUTWARDLY WITH RESPECT TO SAID VANES AND MAINTINING SAID SEALING GLANDS INTO INTIMATE PIVOTAL CONTACT WITH SAID ROTOR.
Claim 2
Dependent Claim
123 words
IN A ROTARY VANE PUMP, A HOUSING HAVING AN INTERIOR CYLINDRICAL WALL AND PARALLEL SPACED END WALLS, AN ANNULAR ROTOR JOURNALLED FOR ROTATION WITHIN SAID HOUSING ABOUT AN AXIS ECCENTRIC OF THE AXIAL CENTER THEREOF, A PAIR OF VANES EXTENDING RADIALLY OF THE AXIAL CENTER OF SAID HOUSING AND MOUNTED FOR PIVOTAL MOVEMENT ABOUT SAID AXIS AND HAVING SURFACE CONTACT WITH SAID CYLINDRICAL WALL, SEALING GLANDS PIVOTALLY MOUNTED IN SAID ROTOR AND HAVING FACING FLAT FACES FORMING SLIDABLE GUIDES FOR SAID VANES, AND MEANS INDEPENDENT OF SAID VANES EXERTING SEPARATING FORCES ON SAID SEALING GLANDS AND BIASING THE FACING FLAT FACES OF SAID SEALING GLANDS OUTWARDLY WITH RESPECT TO SAID VANES AND MAINTINING SAID SEALING GLANDS INTO INTIMATE PIVOTAL CONTACT WITH SAID ROTOR.
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) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |