US4853577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-rigid spacer for diamond area of dynamoelectric machine
Assignee: Westinghouse Electric Corp
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Filing: 1988-02-25
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Granted: 1989-08-01
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Expires: 2008-02-25
Abstract
Abstract A filler material for supporting the coil end portions at the diamond area of a dynamoelectric machine comprises a resin filler disposed in the vent areas defined between opposed sides of spaced coil end portions at the diamond area, and an elongated, transversely corrugated, longitudinally flexible, sheet-like spacer element disposed within the filler at each vent area. The spacer element is positioned to extend along the respective vent area, with opposite faces thereof facing the sides of the coil end portions on either side of the vent area. The spacer element has a sufficient surface area in contact with the filler as a result of the corrugations of the spacer element, to retard sagging of the filler during installation and curing. The corrugations of the spacer element are generally rectangular in shape so that the element comprises a series of panels disposed in general parallelism to the sides of the corresponding coil end portions.
Inventors
- 👤 Henry M. Holly, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:45
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/46; H02K3/50; H02K3/505; H02K3/32; H02K3/38
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
151 words
A filler material for supporting the coil end portions at the diamond area of a stator of a dynamoelectric machine comprising: a resin filler disposed in the vent areas defined between opposed sides of spaced coil end portions at the diamond area; and an elongated, transversely corrugated, longitudinally flexible, sheet-like spacer element disposed within said filler at each vent area and positioned to extend along the respective vent area with opposite faces thereof disposed in generally facing relationship to the sides of the coil end portions on either side of the vent area, said spacer element having a sufficient surface area in contact with the filler to retard sagging of the latter during installation and curing, and providing means for increasing the effective stiffness of the filler material and for decreasing the linear thermal coefficient of expansion thereof after curing to a level closer to that of the coil end portions.
Claim 2
Dependent Claim
151 words
A filler material for supporting the coil end portions at the diamond area of a stator of a dynamoelectric machine comprising: a resin filler disposed in the vent areas defined between opposed sides of spaced coil end portions at the diamond area; and an elongated, transversely corrugated, longitudinally flexible, sheet-like spacer element disposed within said filler at each vent area and positioned to extend along the respective vent area with opposite faces thereof disposed in generally facing relationship to the sides of the coil end portions on either side of the vent area, said spacer element having a sufficient surface area in contact with the filler to retard sagging of the latter during installation and curing, and providing means for increasing the effective stiffness of the filler material and for decreasing the linear thermal coefficient of expansion thereof after curing to a level closer to that of the coil end portions.
Claim 3
Dependent Claim
17 words
A filler material as set forth in claim 1, wherein the corrugations are generally rectangular in shape.
Claim 4
Dependent Claim
17 words
A filler material as set forth in claim 2, wherein the corrugations are essentially square in shape.
Claim 5
Dependent Claim
55 words
A filler material as set forth in claim 1, wherein said spacer element comprises a series of panels disposed in general parallelism to the sides of the corresponding coil end portions, said panels being alternatively arranged adjacent one of said sides and then the other and being interconnected by webs extending across said vent area.
Claim 6
Dependent Claim
17 words
A filler material as set forth in claim 1, wherein said resin filler comprises an epoxy resin.
Claim 7
Dependent Claim
21 words
A filler material as set forth in claim 1, wherein said spacer element is constructed of a molded, unidirectional fiberglass material.
Claim 8
Dependent Claim
21 words
A filler material as set forth in claim 5, wherein said spacer element is constructed of a molded, unidirectional fiberglass material.
Claim 9
Dependent Claim
55 words
A filler material as set forth in claim 7, wherein said spacer element comprises a series of panels disposed in general parallelism to the sides of the corresponding coil end portions, said panels being alternatively arranged adjacent one of said sides and then the other and being interconnected by webs extending across said vent area.
Claim 10
Dependent Claim
30 words
A filler material as set forth in claim 1, wherein said spacer element has a vertical dimension that is essentially the same as the height of the coil end portions.
Claim 11
Dependent Claim
30 words
A filler material as set forth in claim 4, wherein said spacer element has a vertical dimension that is essentially the same as the height of the coil end portions.
Claim 12
Dependent Claim
30 words
A filler material as set forth in claim 8, wherein said spacer element has a vertical dimension that is essentially the same as the height of the coil end portions.
Claim 13
Dependent Claim
165 words
A dynamoelectric machine comprising a stator having outwardly extending winding coil end portions at the diamond area at each end thereof, and a filler material for supporting said end portions, said filler material comprising: an epoxy resin filler disposed in the vent areas defined between opposed sides of spaced coil end portions at the diamond area; and an elongated, transversely corrugated, longitudinally flexible, sheet-like spacer element disposed within said filler at each vent area and positioned to extend along the respective vent area with opposite faces thereof disposed in generally facing relationship to the sides of the coil end portions on either side of the vent area, said spacer element having a sufficient surface area in contact with the filler to retard sagging of the latter during installation and curing, and providing means for increasing the effective stiffness of the filler material and for decreasing the linear thermal coefficient of expansion thereof after curing to a level closer to that of the coil end portions.
Claim 14
Dependent Claim
165 words
A dynamoelectric machine comprising a stator having outwardly extending winding coil end portions at the diamond area at each end thereof, and a filler material for supporting said end portions, said filler material comprising: an epoxy resin filler disposed in the vent areas defined between opposed sides of spaced coil end portions at the diamond area; and an elongated, transversely corrugated, longitudinally flexible, sheet-like spacer element disposed within said filler at each vent area and positioned to extend along the respective vent area with opposite faces thereof disposed in generally facing relationship to the sides of the coil end portions on either side of the vent area, said spacer element having a sufficient surface area in contact with the filler to retard sagging of the latter during installation and curing, and providing means for increasing the effective stiffness of the filler material and for decreasing the linear thermal coefficient of expansion thereof after curing to a level closer to that of the coil end portions.
Claim 15
Dependent Claim
21 words
A dynamoelectric machine as set forth in claim 12, wherein said spacer element is constructed of a molded unidirectional fiberglass material.
Claim 16
Dependent Claim
55 words
A dynamoelectric machine as set forth in claim 13, wherein said spacer element comprises a series of panels disposed in general parallelism to the sides of the corresponding coil end portions, said panels being alternatively arranged adjacent one of said sides and then the other and being interconnected by webs extending across said vent area.
Claim 17
Dependent Claim
30 words
A dynamoelectric machine as set forth in claim 14, wherein said spacer element has a vertical dimension that is essentially the same as the height of the coil end portions.
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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) | 1992-07-31 | 1993-01-30 | 1993-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-31 | 1997-01-30 | 1997-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-31 | 2001-01-30 | 2001-08-01 | $7700.00 | Window Closed / Lapsed |