US3714477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination flux shield and flux shunt for a dynamoelectric machine
Assignee: General Electric Co
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Filing: 1971-08-23
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Granted: 1973-01-30
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Expires: 1991-08-23
Abstract
Abstract A combination flux shield and flux shunt for the end of a laminated dynamoelectric machine stator core to redirect and to control the stray end region flux so as to minimize the effects of axial flux penetration into the stator core. A low permeability, electrically conductive flux shield deflects flux from the generator core ''''yoke'''' portion into the ''''tooth'''' portion and a high permeability flux shunt with stepped laminations in the tooth portion collects flux and diverts it into a radial path parallel to the main synchronous flux.
Inventors
- 👤 B Gott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:49
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/42
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
149 words
In a dynamoelectric machine having a laminated stator core defining a toothed portion carrying main windings in slots between said teeth and an outer yoke portion, the combination comprising: a flux shunt comprising a plurality of high permeability laminations disposed at the end of the core aligned with said yoke portion and part of said toothed portion, a clamping flange arranged outside of said main windings and arranged to hold said flux shunt laminations and said stator core laminations in place, and a flux shield of low permeability conductive material disposed outside of said clamping flange and having an inner peripheral edge terminating adjacent to said flux shunt between the clamping flange and the main winding, whereby circulating currents in said flux shield divert stray end flux around the clamping flange and yoke portion into the part of said flux shunt which extends into the stator core toothed portion.
Claim 2
Dependent Claim
149 words
In a dynamoelectric machine having a laminated stator core defining a toothed portion carrying main windings in slots between said teeth and an outer yoke portion, the combination comprising: a flux shunt comprising a plurality of high permeability laminations disposed at the end of the core aligned with said yoke portion and part of said toothed portion, a clamping flange arranged outside of said main windings and arranged to hold said flux shunt laminations and said stator core laminations in place, and a flux shield of low permeability conductive material disposed outside of said clamping flange and having an inner peripheral edge terminating adjacent to said flux shunt between the clamping flange and the main winding, whereby circulating currents in said flux shield divert stray end flux around the clamping flange and yoke portion into the part of said flux shunt which extends into the stator core toothed portion.
Claim 3
Dependent Claim
149 words
In a dynamoelectric machine having a laminated stator core defining a toothed portion carrying main windings in slots between said teeth and an outer yoke portion, the combination comprising: a flux shunt comprising a plurality of high permeability laminations disposed at the end of the core aligned with said yoke portion and part of said toothed portion, a clamping flange arranged outside of said main windings and arranged to hold said flux shunt laminations and said stator core laminations in place, and a flux shield of low permeability conductive material disposed outside of said clamping flange and having an inner peripheral edge terminating adjacent to said flux shunt between the clamping flange and the main winding, whereby circulating currents in said flux shield divert stray end flux around the clamping flange and yoke portion into the part of said flux shunt which extends into the stator core toothed portion.
Claim 4
Dependent Claim
149 words
In a dynamoelectric machine having a laminated stator core defining a toothed portion carrying main windings in slots between said teeth and an outer yoke portion, the combination comprising: a flux shunt comprising a plurality of high permeability laminations disposed at the end of the core aligned with said yoke portion and part of said toothed portion, a clamping flange arranged outside of said main windings and arranged to hold said flux shunt laminations and said stator core laminations in place, and a flux shield of low permeability conductive material disposed outside of said clamping flange and having an inner peripheral edge terminating adjacent to said flux shunt between the clamping flange and the main winding, whereby circulating currents in said flux shield divert stray end flux around the clamping flange and yoke portion into the part of said flux shunt which extends into the stator core toothed portion.
References Cited (Backward Citations)
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US1645070A
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US1689187A
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US1816795A
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US2795714A
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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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |