US3348489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction pump
Assignee: Individual
•
Filing: 1965-12-13
•
Granted: 1967-10-24
•
Expires: 1985-12-13
Abstract
No abstract record available.
Inventors
- 👤 Meyer Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:08
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B17/00; F04B17/03; F04B17/04; F04B17/046; F04B53/12; F04B53/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN INDUCTION PUMP FOR PUMPING A FLOWABLE MEDIUM, SAID PUMP COMPRISING AN OPEN ENDED CYLINDER, ONE END PORTION OF THE CYLINDER CONSTITUTING A SUCTION CONDUT AND THE OTHER A PRESSURE CONDUIT, EXCITING COIL MEANS ENCOMPASSING THE MID-PORTION OF THE CYLINDER, A MAGNETIZABLE TUBULAR PLUNGER SLIDABLE IN THE MID-PORTION OF SAID CYLINDER AND INCLUDING AN OPEN PASSAGEWAY EXTENDING BETWEEN THE TWO END FACES OF THE PLUNGER, SAID PLUNGER HAVING A TUBULAR EXTENSION OF LESSER DIAMERTER THAN THE OUTER DIAMETER OF THE PLUNGER ON EACH END FACE IN ALIGNEMENT WITH THE HOLLOW INTERIOR OF THE PLUNGER, SAID EXTENSIONS PROTRUDING INTO SAID END PORTIONS OF THE CYLINDER AND BEING SLIDABLY GUIDED THEREIN.
Claim 2
Dependent Claim
109 words
AN INDUCTION PUMP FOR PUMPING A FLOWABLE MEDIUM, SAID PUMP COMPRISING AN OPEN ENDED CYLINDER, ONE END PORTION OF THE CYLINDER CONSTITUTING A SUCTION CONDUT AND THE OTHER A PRESSURE CONDUIT, EXCITING COIL MEANS ENCOMPASSING THE MID-PORTION OF THE CYLINDER, A MAGNETIZABLE TUBULAR PLUNGER SLIDABLE IN THE MID-PORTION OF SAID CYLINDER AND INCLUDING AN OPEN PASSAGEWAY EXTENDING BETWEEN THE TWO END FACES OF THE PLUNGER, SAID PLUNGER HAVING A TUBULAR EXTENSION OF LESSER DIAMERTER THAN THE OUTER DIAMETER OF THE PLUNGER ON EACH END FACE IN ALIGNEMENT WITH THE HOLLOW INTERIOR OF THE PLUNGER, SAID EXTENSIONS PROTRUDING INTO SAID END PORTIONS OF THE CYLINDER AND BEING SLIDABLY GUIDED THEREIN.
References Cited (Backward Citations)
US1822242A
Cited
US2293684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |