US3949254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winding for dynamoelectric machine
Assignee: Westinghouse Electric Corp
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Filing: 1974-02-25
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Granted: 1976-04-06
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Expires: 1994-02-25
Abstract
Abstract A winding is provided for dynamoelectric machines having a plurality of pole groups disposed to form a poly-phase winding. Each pole group consists of a number of multi-turn coils divided into two subgroups with the coils of one subgroup having one more turn than the coils of the other subgroup. Field strengths can thus be obtained equivalent to what could be produced by coils having fractional numbers of turns intermediate between the actual numbers of turns of the coils of the two subgroups, the effective number of turns being determined by the relative number of coils in the two subgroups of each pole group.
Inventors
- 👤 Richard F. Woll
- 👤 Clifford P. Willby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:08
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/02; C25F3/12; H; H02; H02K; H02K3/00; H02K3/04; H02K3/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
A winding for a dynamoelectric machine comprising a plurality of pole groups disposed to form a polyphase winding, each of said pole groups including a plurality of multi-turn coils positioned adjacent each other to form one pole of one phase of the winding, the coils of each pole group being divided into two subgroups, and the coils of one subgroup of each pole group having one more turn than the coils of the other subgroup, each coil of both subgroups having an integral number of turns.
Claim 2
Dependent Claim
86 words
A winding for a dynamoelectric machine comprising a plurality of pole groups disposed to form a polyphase winding, each of said pole groups including a plurality of multi-turn coils positioned adjacent each other to form one pole of one phase of the winding, the coils of each pole group being divided into two subgroups, and the coils of one subgroup of each pole group having one more turn than the coils of the other subgroup, each coil of both subgroups having an integral number of turns.
Claim 3
Dependent Claim
19 words
A winding as defined in claim 1 in which all of said subgroups have the same number of coils.
Claim 4
Dependent Claim
21 words
A winding as defined in claim 1 in which the two subgroups of each pole group have different numbers of coils.
Claim 5
Dependent Claim
49 words
A winding as defined in claim 1 in which the pole groups of each phase are connected in parallel and the subgroups of each pole group are connected in series, and the respective subgroups of each of the pole groups of each phase are symmetrically arranged within the winding.
Claim 6
Dependent Claim
30 words
A winding as defined in claim 1 in which all of said subgroups have the same number of coils and the pitch of the coils is one-half the pole pitch.
References Cited (Backward Citations)
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US1447164A
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US1711979A
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US1832700A
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US2414571A
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US2397183A
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US3391319A
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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) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |