US3213803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump
Assignee: Individual
•
Filing: 1963-11-06
•
Granted: 1965-10-26
•
Expires: 1983-11-06
Abstract
No abstract record available.
Inventors
- 👤 Godfried J Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:30
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
171 words
A ROTARY PUMP COMPRISING A CYLINDRICAL CASING HAVING A SIDE WALL AND END PLATES, SAID SIDE WALL HAVING AN INLET PORT AND AN OUTLET PORT, SAID PORTS EACH HAVING AN ARCUATE SURFACE PART OF WHICH IS ECCENTRIC TO THE INNER SURFACE OF THE SIDE WALL, A CYLINDRICAL ROTOR JOURNALLED IN THE END PLATES, A DRIVEN SHAFT ON THE ROTOR PROJECTING THROUGH AN END PLATE, THE PERIPHERY OF THE ROTOR BEING ECCENTRICALLY DISPOSED TO THE INNER SURFACE OF THE SIDE WALL AND DEFINING THEREWITH A PUMPING CHANBER, SAID PUMPING CHAMBER HAVING A VOLUME SUBSTANTIALLY EQUAL TO THE COMBINED VOLUMES OF THE INLET AND OUTLET PORTS, SAID ROTOR HAVING CENTRAL RECESS AND RADIAL SLOTS COMMUNICATING BETWEEN THE CENTRAL RECESS AND THE PUMPING CHANBER, A SPINDLE CARRIED BY AN END PLATE AND EXTENDING INTO THE CENTRAL RECESS, SAID SPINDLE BEING CONCENTRICALLY DISPOSED TO THE INNER SURFACE OF THE SIDE WALL, A VANE SLIDABLY MOUNTED IN EACH OF THE RADIAL SLOTS AND MEANS OPERATIVELY CONNECTING THE RADIAL INNER END OF EACH VANE TO THE SPINDLE.
Claim 2
Dependent Claim
171 words
A ROTARY PUMP COMPRISING A CYLINDRICAL CASING HAVING A SIDE WALL AND END PLATES, SAID SIDE WALL HAVING AN INLET PORT AND AN OUTLET PORT, SAID PORTS EACH HAVING AN ARCUATE SURFACE PART OF WHICH IS ECCENTRIC TO THE INNER SURFACE OF THE SIDE WALL, A CYLINDRICAL ROTOR JOURNALLED IN THE END PLATES, A DRIVEN SHAFT ON THE ROTOR PROJECTING THROUGH AN END PLATE, THE PERIPHERY OF THE ROTOR BEING ECCENTRICALLY DISPOSED TO THE INNER SURFACE OF THE SIDE WALL AND DEFINING THEREWITH A PUMPING CHANBER, SAID PUMPING CHAMBER HAVING A VOLUME SUBSTANTIALLY EQUAL TO THE COMBINED VOLUMES OF THE INLET AND OUTLET PORTS, SAID ROTOR HAVING CENTRAL RECESS AND RADIAL SLOTS COMMUNICATING BETWEEN THE CENTRAL RECESS AND THE PUMPING CHANBER, A SPINDLE CARRIED BY AN END PLATE AND EXTENDING INTO THE CENTRAL RECESS, SAID SPINDLE BEING CONCENTRICALLY DISPOSED TO THE INNER SURFACE OF THE SIDE WALL, A VANE SLIDABLY MOUNTED IN EACH OF THE RADIAL SLOTS AND MEANS OPERATIVELY CONNECTING THE RADIAL INNER END OF EACH VANE TO THE SPINDLE.
References Cited (Backward Citations)
FR525684A
Cited
FR24330E
Cited
FR570682A
Cited
US2023594A
Cited
US2638054A
Cited
US2789513A
Cited
US3072068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |