US4166714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic pump
Assignee: Interatom Internationale Atomreaktorbau GmbH
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Filing: 1977-08-22
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Granted: 1979-09-04
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Expires: 1997-08-22
Abstract
Abstract In an electromagnetic pump for electrically conductive liquid, two coaxial tubes radially spaced from one another and defining an annular channel therebetween traversible by the conductive liquid, and induction coils disposed within the inner coaxial tube.
Inventors
- 👤 Rainer Rienass
- 👤 Enno Buscher
- 👤 Walter Jansing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:25
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/02; H02K44/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
83 words
In an electromagnetic pump for electrically conductive liquid, two coaxial tubes radially spaced from and stationary with respect to one another and defining an annular channel therebetween traversible by the conductive liquid, a first set of induction coils disposed outside said outer coaxial tube and a second set of induction coils disposed within said inner coaxial tube, and a support tube disposed within and coaxially to said inner coaxial tube, said second set of induction coils being releasably fastened to said support tube.
Claim 2
Dependent Claim
83 words
In an electromagnetic pump for electrically conductive liquid, two coaxial tubes radially spaced from and stationary with respect to one another and defining an annular channel therebetween traversible by the conductive liquid, a first set of induction coils disposed outside said outer coaxial tube and a second set of induction coils disposed within said inner coaxial tube, and a support tube disposed within and coaxially to said inner coaxial tube, said second set of induction coils being releasably fastened to said support tube.
Claim 3
Dependent Claim
29 words
Electromagnetic pump according to claim 1, wherein said support tube is hollow and is formed with means for supplying and discharging coolant for said second set of induction coils.
References Cited (Backward Citations)
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Cited
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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) | 1982-09-03 | 1983-03-05 | 1983-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-03 | 1987-03-05 | 1987-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-03 | 1991-03-05 | 1991-09-04 | $7700.00 | Window Closed / Lapsed |