US3590301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor for dynamoelectric machine
Assignee: Siemens AG
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Filing: 1970-04-24
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Granted: 1971-06-29
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Expires: 1990-04-24
Abstract
Abstract A four-pole rotor is provided for dynamoelectric machines in which the exciting winding consists of a plurality of coils, preferably wound of strap conductors, which are constructed so that they can be inserted radially over the pole members and held in place with each coil engaging the same sides of two diametrically opposite poles. In this way the windings can be applied after complete assembly of the rotor, permitting more secure attachment of the poles to the rotor body.
Inventors
- 👤 Gunter Woydt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:05
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/18; H02K3/46; H02K3/52; H02K3/527
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
115 words
A four pole rotor for a dynamoelectric machine comprising a shaft, four salient pole members supported on said shaft and equally spaced apart, four coils for excitation of said pole members, each of said coils being generally rectangular with an open area having a width not less than the width of an assembled pole member and coil, two of said coils being disposed in parallel planes on opposite sides of the shaft whereby each of said two coils engages the same side of two diametrically opposite pole members, the other two of said coils being similarly disposed in planes at right angles to the firstmentioned planes to engage the other two diametrically opposite pole members.
Claim 2
Dependent Claim
115 words
A four pole rotor for a dynamoelectric machine comprising a shaft, four salient pole members supported on said shaft and equally spaced apart, four coils for excitation of said pole members, each of said coils being generally rectangular with an open area having a width not less than the width of an assembled pole member and coil, two of said coils being disposed in parallel planes on opposite sides of the shaft whereby each of said two coils engages the same side of two diametrically opposite pole members, the other two of said coils being similarly disposed in planes at right angles to the firstmentioned planes to engage the other two diametrically opposite pole members.
Claim 3
Dependent Claim
40 words
A rotor as defined in claim 1 in which the first-mentioned two coils are shorter in axial length than the last-mentioned two coils and the ends of the longer coils extend across and enclose the ends of the shorter coils.
Claim 4
Dependent Claim
23 words
A rotor as defined in claim 1 in which each of the coils comprises a plurality of turns of strap conductor wound flatwise.
Claim 5
Dependent Claim
38 words
A rotor as defined in claim 1 having a body portion consisting of a plurality of generally circular laminations, the pole members being formed on the periphery of the laminations and the laminations being secured on the shaft.
References Cited (Backward Citations)
US2660681A
Cited
US3076110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |