Patent US3862446A successfully refreshed from Google Patents.
US3862446A
Expired / Lapsed
US
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Two pole synchronous reluctance motor
Assignee: Allis Chalmers Corp
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Filing: 1973-12-28
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Granted: 1975-01-21
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Expires: 1993-12-28
Abstract
Abstract A two pole synchronous reluctance motor whose rotor has the main conductor winding of each pole encompassing substantially 90 mechanical degrees of the rotor core. A flux barrier extends across the rotor core between the conductors. At least one additional secondary conductor bar is provided between each circumferential end of each pole winding and the flux barrier.
Inventors
- 👤 Clarence B Hilgeman
- 👤 Jr E Roe Poellot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:32
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/24; H02K1/246; H02K19/00; H02K19/02; H02K19/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
156 words
A rotor for a two pole synchronous reluctance motor comprising: a stack of magnetic laminations forming a core having a pair of effective oppositely disposed salient poles, a plurality of circumferentially spaced interconnected conductors in each salient pole portion adjacent the periphery thereof forming main pole windings, the main conductors of each pole encompassing 90 mechanical degrees of said rotor core, flux barriers formed in and extending across said core between said main pole windings with the ends thereof circumferentially spaced from said main pole winding, and at least one additional secondary conductor located in the space between the ends of each main pole winding and each end of said flux barrier adjacent the periphery of said core, the space between the ends of said main pole windings and the circumferentially nearest secondary conductor being greater than the space between any two adjacent main conductors, said conductors being connected together to form a squirrel cage winding.
Claim 2
Dependent Claim
156 words
A rotor for a two pole synchronous reluctance motor comprising: a stack of magnetic laminations forming a core having a pair of effective oppositely disposed salient poles, a plurality of circumferentially spaced interconnected conductors in each salient pole portion adjacent the periphery thereof forming main pole windings, the main conductors of each pole encompassing 90 mechanical degrees of said rotor core, flux barriers formed in and extending across said core between said main pole windings with the ends thereof circumferentially spaced from said main pole winding, and at least one additional secondary conductor located in the space between the ends of each main pole winding and each end of said flux barrier adjacent the periphery of said core, the space between the ends of said main pole windings and the circumferentially nearest secondary conductor being greater than the space between any two adjacent main conductors, said conductors being connected together to form a squirrel cage winding.
Claim 3
Dependent Claim
31 words
The rotor set forth in claim 1 wherein the secondary conductor is a single conductor equally spaced from the circumferential ends of each main pole winding and the adjacent flux barrier.
Claim 4
Dependent Claim
30 words
The rotor set forth in claim 1 wherein the current carrying capacity of the main conductor windings is substantially greater than the current carrying capacity of the secondary conductor bars.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |