US3656867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic pump for liquid metals
Assignee: Groupement Atomique Alsacienne Atlantique SA
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Filing: 1970-07-15
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Granted: 1972-04-18
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Expires: 1990-07-15
Abstract
Abstract An electromagnetic pump comprising an impelling duct for liquid metals having a symmetry axis, made of a refractory material and equipped with preheating means and thermal insulation, a stator consisting of two magnetic yokes arranged on both sides of the duct and comprising laminated cores in parallel relation to a plane containing the axis of the duct and having deep and uniformly spaced slots, each of which receives a flat coil in a direction perpendicular to the axis of the duct. In this manner, each of the coils can be removed by translation in a direction parallel to the axis of the duct after unclamping in a perpendicular direction.
Inventors
- 👤 Henri Carbonnel
- 👤 Jean Le Frere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:53
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/02; H02K44/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
126 words
An electromagnetic pump comprising an impelling duct for liquid metals having a symmetry axis and being made of a refractory material, said duct having means for preheating the refractory material; and a stator formed of two yokes arranged on either side of said duct, said yokes each comprising a laminated core arranged parallel to a plane containing the symmetry axis of said duct and provided with deep slots facing the duct and uniformly spaced along the duct, and a flat coil perpendicular to the symmetry axis mounted in each of said slots, whereby said coils can be removed by translation in a direction parallel to the axis of the duct after removing them from the slots in a direction perpendicular to the axis of the duct.
Claim 2
Dependent Claim
126 words
An electromagnetic pump comprising an impelling duct for liquid metals having a symmetry axis and being made of a refractory material, said duct having means for preheating the refractory material; and a stator formed of two yokes arranged on either side of said duct, said yokes each comprising a laminated core arranged parallel to a plane containing the symmetry axis of said duct and provided with deep slots facing the duct and uniformly spaced along the duct, and a flat coil perpendicular to the symmetry axis mounted in each of said slots, whereby said coils can be removed by translation in a direction parallel to the axis of the duct after removing them from the slots in a direction perpendicular to the axis of the duct.
Claim 3
Dependent Claim
34 words
The pump as in claim 1 in which each of said yokes is made of a plurality of independent elements defining said slots, and means are provided for assembling said elements to each other.
Claim 4
Dependent Claim
27 words
The pump as in claim 1 in which the duct is surrounded by thermal insulation material for protecting the coils against the heat of the liquid metal.
References Cited (Backward Citations)
US2764095A
Cited
US3005116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |