US4710662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine rotor structure having improved insulation
Assignee: General Electric Co
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Filing: 1985-12-09
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Granted: 1987-12-01
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Expires: 2005-12-09
Abstract
Abstract A rotor structure for dynamoelectric machines includes a central shaft, defining a rotation axis, which supports main rotor windings. A winding support is disposed about and secured to the shaft and an encapsulated equalizer winding assembly is supported by said winding support. An expansion member is positioned between at least a portion of said encapsulated equalizer winding assembly and said winding support and an insulating resin covers at least exposed, proximate portions of said winding support, said expansion member and said encapsulated equalizer winding assembly.
Inventors
- 👤 Roy L. Balke
- 👤 Charles H. Merrifield
- 👤 Frank E. Mizikowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:14
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/46; H02K3/50; H02K3/51; H02K3/04; H02K3/12; H02K3/16
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
105 words
A rotor structure for a dynamoelectric machine comprising: (a) a central shaft defining an axis of rotor rotation; (b) main rotor windings supported by said shaft; (c) a winding support disposed on and secured to said shaft; (d) an encapsulated equalizer winding assembly supported by said support member, said equalizer winding assembly being positioned adjacent an end of said motor windings; (e) an expansion member disposed between at least a portion of said encapsulated equalizer winding assembly and said winding support; and, (f) an insulating resin covering at least exposed, proximate portions of said winding support, said expansion member and said encapsulated equalizer winding assembly.
Claim 2
Dependent Claim
105 words
A rotor structure for a dynamoelectric machine comprising: (a) a central shaft defining an axis of rotor rotation; (b) main rotor windings supported by said shaft; (c) a winding support disposed on and secured to said shaft; (d) an encapsulated equalizer winding assembly supported by said support member, said equalizer winding assembly being positioned adjacent an end of said motor windings; (e) an expansion member disposed between at least a portion of said encapsulated equalizer winding assembly and said winding support; and, (f) an insulating resin covering at least exposed, proximate portions of said winding support, said expansion member and said encapsulated equalizer winding assembly.
Claim 3
Dependent Claim
31 words
The invention in accordance with claim 1 wherein said expansion member is disposed between the winding support and the encapsulated equalizer winding assembly in a region distal from said main windings.
Claim 4
Dependent Claim
20 words
The invention in accordance with claim 1 wherein said expansion member includes a relatively flat member of resin absorbent felt.
Claim 5
Dependent Claim
14 words
The invention in accordance with claim 3 wherein said felt is a polyester material.
Claim 6
Dependent Claim
27 words
The invention in accordance with claim 1 wherein said expansion member comprises a relatively flat member of resin absorbent felt with an overlaying loosely woven glass c-oth.
Claim 7
Dependent Claim
16 words
The invention in accordance with claim 5 wherein said glass cloth is a desized leno weave.
Claim 8
Dependent Claim
35 words
The invention in accordance with claim 1 wherein said winding support includes a molded insulating member disposed over a metallic portion wherein said insulating member is positioned between said metallic portion and said expansion member.
Claim 9
Dependent Claim
34 words
The invention in accordance with claim 1 wherein said expansion a member is sized to extend over a minor portion of a common area between said support member and said encapsulated equalizer winding assembly.
Claim 10
Dependent Claim
55 words
The invention in accordance with claim 1 wherein said winding support includes a metallic portion and molded insulating member overlying at least that part of the metallic portion of said winding support contiguous to said encapsulated equalizer winding assembly and wherein said molded insulating member is positioned between said metallic portion and said expansion member.
Claim 11
Dependent Claim
93 words
In a dynamoelectric machine rotor structure of the type including a centrally extending shaft, main windings supported by said shaft, a winding support supported by said shaft and an encapsulated equalizer winding assembly disposed around said winding support contiguusly to one end of said main windings, the improvenent comprising: (a) an expansion member positioned between at least a portion of the winding support and the encapsulated equalizer winding assembly; and, (b) an insulating resin covering at least exposed proximate portions of said winding support, said expansion member and said encapsulated equalizer winding assembly.
Claim 12
Dependent Claim
93 words
In a dynamoelectric machine rotor structure of the type including a centrally extending shaft, main windings supported by said shaft, a winding support supported by said shaft and an encapsulated equalizer winding assembly disposed around said winding support contiguusly to one end of said main windings, the improvenent comprising: (a) an expansion member positioned between at least a portion of the winding support and the encapsulated equalizer winding assembly; and, (b) an insulating resin covering at least exposed proximate portions of said winding support, said expansion member and said encapsulated equalizer winding assembly.
Claim 13
Dependent Claim
31 words
The invention in accordance with claim 10 wherein said expansion member is disposed between the winding support and the encapsulated equalizer winding assembly in a region distal from said main windings.
Claim 14
Dependent Claim
20 words
The invention in accordance with claim 10 wherein said expansion member includes a relatively flat member of resin absorbent felt.
Claim 15
Dependent Claim
14 words
The invention in accordance with claim 10 wherein said felt is a polyester material.
Claim 16
Dependent Claim
27 words
The invention in accordance with claim 10 wherein said expansion member comprises a relatively flat member of resin absorbent felt with an overlaying loosely woven glass cloth.
Claim 17
Dependent Claim
16 words
The invention in accordance with claim 10 wherein said glass cloth is a desized leno weave.
Claim 18
Dependent Claim
33 words
The invention in accordance with claim 10 wherein said expansion member is sized to extend over a minor portion of a common area between said support member and said encapsulated equalizer winding assembly.
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) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |