Patent US2540393A successfully refreshed from Google Patents.
Patent US3694684A successfully refreshed from Google Patents.
US3694684A
Expired / Lapsed
US
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Cylindrical coil winding for an electrical machine
Assignee: Individual
•
Filing: 1971-03-26
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Granted: 1972-09-26
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Expires: 1991-03-26
Abstract
Abstract A cylindrical coil for an electrical machine having a plurality of turns wherein each turn overlaps a plurality of adjacent turns and a portion of each turn lies in a first cylindrical layer and the remaining portion of each turn lies in a second cylindrical layer. The wire turns have a rhomboidal contour.
Inventors
- 👤 Bodo Futterer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:41
CPC Classifications
H; H02; H02K; H02K3/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
77 words
A cylindrical coil for an electrical machine comprising: a plurality of turns, each turn overlapping a plurality of adjacent turns; a portion of each turn lying in a first cylindrical layer, and substantially all of the remaining portions of each of said turns lying in a second cylindrical layer; each of said turns forming a substantially closed, flattened winding pattern of a dual layer cylinder; and the turns of the peripheral portions thereof being of rhomboidal contour.
Claim 2
Dependent Claim
77 words
A cylindrical coil for an electrical machine comprising: a plurality of turns, each turn overlapping a plurality of adjacent turns; a portion of each turn lying in a first cylindrical layer, and substantially all of the remaining portions of each of said turns lying in a second cylindrical layer; each of said turns forming a substantially closed, flattened winding pattern of a dual layer cylinder; and the turns of the peripheral portions thereof being of rhomboidal contour.
Claim 3
Dependent Claim
28 words
A cylindrical coil according to claim 1, wherein all turns are made of a single wire and wherein taps are provided at one circumferential edge of the coil.
Claim 4
Dependent Claim
23 words
A cylindrical coil according to claim 1, wherein the turns are made of an enamelled wire which is coated with a thermo-setting laquer.
Claim 5
Dependent Claim
20 words
A cylindrical coil according to claim 1, wherein a support is fixed to at least one surface of the coil.
Claim 6
Dependent Claim
22 words
A cylindrical coil according to claim 1, wherein a supporting foil is provided between at least two cylindrical layers of the coil.
References Cited (Backward Citations)
FR545345A
Cited
DE963081C
Cited
US3344514A
Cited
US3360668A
Cited
US3442702A
Cited
US3441761A
Cited
US3488837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |