US3154017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
D. c. induction pump
Assignee: RTX Corp
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Filing: 1963-01-14
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Granted: 1964-10-27
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Expires: 1983-01-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Glenn E Edgerly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:47
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/02; H02K44/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A D.C. INDUCTION PUMP FOR PUMPING A PLURALITY OF INDEPENDENT CIRCUITS OF CONDUCTIVE LIQUID COMPRISING A SHAFT OF GOOD MAGNETIC MATERIAL HAVING A PLURALITY OF RADIAL PROJECTIONS AT SPACED POINTS ALONG ITS LENGTH CONSTITUTING FLUX CONCENTRATING POLE PIECES, A SLEEVE OF GOOD MAGNETIC MATERIAL SURROUNDING SAID SHAFT IN SPACED RELATION THERETO, SAID SLEEVE HAVING RADIALLY DIRECTED OUTWARD PROJECTIONS FORMING MAGNET CORES LYING IN THE SAME TRANSVERSE PLANES AS SAID SHAFT PROJECTIONS, WINDINGS ON SAID MAGNET CORES, MEANS FORMING FLUX LINKAGE BETWEEN THE OUTER EXTREMITIES OF SAID MAGNET CORES AND SAID SHAFT, AND FLOW TUBES, EACH INCLUDED IN A SEPARATE ONE OF SAID CIRCUITS, LOCATED IN THE SPACE BETWEEN SAID SHAFT AND SAID SLEEVE AT SAID MAGNET CORE LOCATIONS.
Claim 2
Dependent Claim
118 words
A D.C. INDUCTION PUMP FOR PUMPING A PLURALITY OF INDEPENDENT CIRCUITS OF CONDUCTIVE LIQUID COMPRISING A SHAFT OF GOOD MAGNETIC MATERIAL HAVING A PLURALITY OF RADIAL PROJECTIONS AT SPACED POINTS ALONG ITS LENGTH CONSTITUTING FLUX CONCENTRATING POLE PIECES, A SLEEVE OF GOOD MAGNETIC MATERIAL SURROUNDING SAID SHAFT IN SPACED RELATION THERETO, SAID SLEEVE HAVING RADIALLY DIRECTED OUTWARD PROJECTIONS FORMING MAGNET CORES LYING IN THE SAME TRANSVERSE PLANES AS SAID SHAFT PROJECTIONS, WINDINGS ON SAID MAGNET CORES, MEANS FORMING FLUX LINKAGE BETWEEN THE OUTER EXTREMITIES OF SAID MAGNET CORES AND SAID SHAFT, AND FLOW TUBES, EACH INCLUDED IN A SEPARATE ONE OF SAID CIRCUITS, LOCATED IN THE SPACE BETWEEN SAID SHAFT AND SAID SLEEVE AT SAID MAGNET CORE LOCATIONS.
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) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |