US3072067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump
Assignee: Eaton Corp
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Filing: 1959-12-22
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Granted: 1963-01-08
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Expires: 1979-12-22
Abstract
No abstract record available.
Inventors
- 👤 Herbert R Beller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:47
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3441; F04C2/3445
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
210 words
IN A ROTARY PUMP; HOUSING MEANS HAVING END WALLS AND CONTAINING A WORK CHAMBER HAVING A SURROUNDING ANNULAR CONCAVE PERIPHERAL WALL; ROTOR MEANS OPERABLE IN SAID WORK CHAMBER COMPRISING A ROTOR BODY HAVING AN ANNULAR CONVEX PERIPHERAL WALL AND TRANSVERSE SLOTS EXTENDING AXIALLY ACROSS AND INTERRUPTING SAID CONVEX PERIPHERAL WALL AT CIRCUMFERENTIALLY SPACED POINTS; PUMPING ELEMENTS COMPRISING ROLLERS DISPOSED IN SAID SLOTS AND RADIALLY SHIFTABLE THEREIN; SAID HOUSING MEANS HAVING A SEALING SECTOR AND INTAKE AND DISCHARGE SECTORS ON OPPOSITE SIDES OF SAID SEALING SECTOR; SAID ELEMENTS HAVING SEALING ENGAGEMENT WITH SAID CONCAVE PERIPHERAL WALL DURING ROTATIONAL OPERATION OF SAID ROTOR MEANS IN SAID WORK CHAMBER AND DIVIDING SAID INTAKE SECTOR INTO INTAKE PUMPING CHAMBERS AND SAID DISCHARGE SECTOR INTO DISCHARGE PUMPING CHAMBERS; SAID ROTOR BODY HAVING LEADING AND TRAILING WALL PORTIONS FORMING WALLS OF SAID SLOTS ON THE LEADING AND TRAILING SIDES THEREOF; INLET PORT MEANS LOCATED TO COMMUNICATE WITH AND SUPPLY FLUID TO SAID INTAKE PUMPING CHAMBERS; DISCHARGE PORT MEANS IN THE DISCHARGE SECTOR FOR RECEIVING PUMPED FLUID UNDER PRESSURE FROM SAID DISCHARGE PUMPING CHAMBERS; SAID TRAILING WALL PORTIONS HAVING RECESSES THEREIN MOVABLE PAST SAID INLET PORT MEANS AND COMMUNICATING WITH THE BOTTOM PORTION OF SAID SLOTS AND TOP TRAILING PORTION OF SAID SLOTS FOR FACILITATING ENTRY OF
Claim 2
Dependent Claim
210 words
IN A ROTARY PUMP; HOUSING MEANS HAVING END WALLS AND CONTAINING A WORK CHAMBER HAVING A SURROUNDING ANNULAR CONCAVE PERIPHERAL WALL; ROTOR MEANS OPERABLE IN SAID WORK CHAMBER COMPRISING A ROTOR BODY HAVING AN ANNULAR CONVEX PERIPHERAL WALL AND TRANSVERSE SLOTS EXTENDING AXIALLY ACROSS AND INTERRUPTING SAID CONVEX PERIPHERAL WALL AT CIRCUMFERENTIALLY SPACED POINTS; PUMPING ELEMENTS COMPRISING ROLLERS DISPOSED IN SAID SLOTS AND RADIALLY SHIFTABLE THEREIN; SAID HOUSING MEANS HAVING A SEALING SECTOR AND INTAKE AND DISCHARGE SECTORS ON OPPOSITE SIDES OF SAID SEALING SECTOR; SAID ELEMENTS HAVING SEALING ENGAGEMENT WITH SAID CONCAVE PERIPHERAL WALL DURING ROTATIONAL OPERATION OF SAID ROTOR MEANS IN SAID WORK CHAMBER AND DIVIDING SAID INTAKE SECTOR INTO INTAKE PUMPING CHAMBERS AND SAID DISCHARGE SECTOR INTO DISCHARGE PUMPING CHAMBERS; SAID ROTOR BODY HAVING LEADING AND TRAILING WALL PORTIONS FORMING WALLS OF SAID SLOTS ON THE LEADING AND TRAILING SIDES THEREOF; INLET PORT MEANS LOCATED TO COMMUNICATE WITH AND SUPPLY FLUID TO SAID INTAKE PUMPING CHAMBERS; DISCHARGE PORT MEANS IN THE DISCHARGE SECTOR FOR RECEIVING PUMPED FLUID UNDER PRESSURE FROM SAID DISCHARGE PUMPING CHAMBERS; SAID TRAILING WALL PORTIONS HAVING RECESSES THEREIN MOVABLE PAST SAID INLET PORT MEANS AND COMMUNICATING WITH THE BOTTOM PORTION OF SAID SLOTS AND TOP TRAILING PORTION OF SAID SLOTS FOR FACILITATING ENTRY OF
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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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |