US3621311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiphase double-layer winding for electromagnetic pumps and conveyor troughs
Assignee: SMS Elotherm GmbH
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Filing: 1970-02-13
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Granted: 1971-11-16
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Expires: 1990-02-13
Abstract
Abstract A multiphase two-layer bar wave winding having a winding head in one plane whereby half-wound end poles are provided and at least one winding per phase occupying one slot per pole beginning at the same end of the stator and progressing from pole to pole between the top and bottom layer returning to the last pole at the stator end by forming a loop and changing from one layer to the other and then proceeding back again in mirror symmetry to the beginning of the stator so that each slot has one bar of the forward going and one bar of the returning portion of the winding.
Inventors
- 👤 Axel Von Starck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:42
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/34; H02; H02K; H02K41/00; H02K41/02; H02K41/025; H02K44/00; H02K44/02; H02K44/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
166 words
In a multiphase two-layer bar wave winding with a winding head in one plane for a traveling field inductor with half-wound boundary poles, the improvement wherein at least one winding train has been provided per phase, said train starting each time at the same end of the inductor, passing through said inductor in the form of a wave progressing forward in the direction toward the other end of the inductor, engaging in the upper or lower layer in each pole a groove assigned to the pertinent layer and alternating from pole to pole, reversing itself in the last pole at the end of the inductor, changing over from one layer to the other in the form of a lap and then returning to the starting end of the inductor, progressing backwards in a part developed quasihomologously in relation to the winding part running forward, so that every groove receives a bar of the part of the winding train progressing forward and of the part progressing backward.
Claim 2
Dependent Claim
166 words
In a multiphase two-layer bar wave winding with a winding head in one plane for a traveling field inductor with half-wound boundary poles, the improvement wherein at least one winding train has been provided per phase, said train starting each time at the same end of the inductor, passing through said inductor in the form of a wave progressing forward in the direction toward the other end of the inductor, engaging in the upper or lower layer in each pole a groove assigned to the pertinent layer and alternating from pole to pole, reversing itself in the last pole at the end of the inductor, changing over from one layer to the other in the form of a lap and then returning to the starting end of the inductor, progressing backwards in a part developed quasihomologously in relation to the winding part running forward, so that every groove receives a bar of the part of the winding train progressing forward and of the part progressing backward.
Claim 3
Dependent Claim
74 words
In a multiphase two-layer bar wave winding as in claim 1, the further improvement that the winding has several grooves per pole and phase and a number of such winding trains corresponding to the number of grooves per pole and phase are connected electrically with one another via reversing laps in the initial boundary pole, so that the winding train in the reversing lap additionally passes from the lower to the upper conductor layer.
Claim 4
Dependent Claim
61 words
In a multiphase two-layer bar wave winding as in claim 1, the further improvement that all bars of the first pole each time across their entire length are arranged in the same winding layer and in that the winding trains pertaining to the same phase and beginning at said pole are connected electrically with one another outside the actual winding head.
Claim 5
Dependent Claim
111 words
In a multiphase two-phase bar wave winding as in claim 3, the further improvement that two equal individual windings are inserted into the grooves of a common stack of sheets of the inductor, whereby the starting boundary pole of one of the individual windings, wound only in the upper layer, has been nested with the starting boundary pole of the other individual winding, wound only in the lower layer, for the purpose of forming an evenly distributed total winding in the grooves of the inductor, and in that the ends of the winding of one individual winding are connected electrically with the beginnings of the winding of the other individual winding.
References Cited (Backward Citations)
GB889420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |