Patent US3945128A successfully refreshed from Google Patents.
Patent US3780323A successfully refreshed from Google Patents.
US3780323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulatingly covered dynamoelectric machine
Assignee: General Electric Co
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Filing: 1971-09-15
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Granted: 1973-12-18
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Expires: 1991-09-15
Abstract
Abstract Insulation systems as well as winding retaining means for dynamoelectric machines having winding accommodating magnetic cores and methods of making same are described. Ground insulation system may include one or more formed in situ insulation members with portions thereof providing retainer means for constraining windings accommodated by a magnetic core from undesired movement. With tongue shape retainer means, access means may also be provided for facilitating the removal of defective winding turns accommodated on a given core. With formed in situ insulating members, retainer means for terminals and terminal boards may be provided along with winding retainer means, by little effort and expense. Similarly, spacer and other means may be provided. In one exemplification, formed in situ insulation system, coupled with molded housing means for winding turns provide substantially improved isolating insulation system for winding turns.
Inventors
- 👤 C Swain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:04
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/32; H02K3/325; H02K15/00; H02K15/16; H02K3/46; H02K3/52; H02K3/521; H02K3/522; H02K5/00; H02K5/04; H02K5/08; H02K15/50; H02K2203/00; H02K2203/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
296 words
A dynamoelectric machine comprising a magnetic core having a plurality of spaced apart tooth sections and core surfaces defining at least one winding turn accommodating slot; a body of insulating material molded in situ on the magnetic core that establishes an insulating covering at least for core surfaces defining the at least one winding turn accommodating slot; a plurality of winding turns having side turn and end turn portions, with at least part of the side turn portions of at leaSt some of the winding turns positioned in the at least one winding turn accommodating slot adjacent to said insulating covering, said insulating covering providing electrical insulation between the core and winding turns adjacent thereto; and winding termination means; said body of insulating material including a winding retaining means extending axially from an end face of the magnetic core and having a free extremity spaced from the end face, said body of insulating material defining receptacle means for at least a portion of said winding termination mans; a bundle of winding end turns disposed adjacent to the winding retaining means and extending axially from a first locale in proximity to the core end face toward the free extremity of the winding retaining means; said winding retaining means having at least one tool admitting passage formed therein that extends axially from the free extremity of the winding retaining means along the bundle of winding end turns to a location proximate to the first locale, to facilitate removal of winding turns from the core; said winding termination means comprising an electrical interconnection between said at least one winding and an external lead wire; a mass of electrically insulating material being disposed as a barrier on the interconnection; and a barrier supporting member being supported by said receptacle means.
Claim 2
Dependent Claim
296 words
A dynamoelectric machine comprising a magnetic core having a plurality of spaced apart tooth sections and core surfaces defining at least one winding turn accommodating slot; a body of insulating material molded in situ on the magnetic core that establishes an insulating covering at least for core surfaces defining the at least one winding turn accommodating slot; a plurality of winding turns having side turn and end turn portions, with at least part of the side turn portions of at leaSt some of the winding turns positioned in the at least one winding turn accommodating slot adjacent to said insulating covering, said insulating covering providing electrical insulation between the core and winding turns adjacent thereto; and winding termination means; said body of insulating material including a winding retaining means extending axially from an end face of the magnetic core and having a free extremity spaced from the end face, said body of insulating material defining receptacle means for at least a portion of said winding termination mans; a bundle of winding end turns disposed adjacent to the winding retaining means and extending axially from a first locale in proximity to the core end face toward the free extremity of the winding retaining means; said winding retaining means having at least one tool admitting passage formed therein that extends axially from the free extremity of the winding retaining means along the bundle of winding end turns to a location proximate to the first locale, to facilitate removal of winding turns from the core; said winding termination means comprising an electrical interconnection between said at least one winding and an external lead wire; a mass of electrically insulating material being disposed as a barrier on the interconnection; and a barrier supporting member being supported by said receptacle means.
Claim 3
Dependent Claim
299 words
A dynamoelectric machine comprising a magnetic core having a plurality of spaced apart tooth sections and core surfaces defining at least one winding turn accommodating slot; a body of insulating material molded in situ on the magnetic core that establishes an insulating covering at least for core surfaces defining the at least one winding turn accommodating slot; a plurality of winding turns having side turn and end turn portions, with at least part of the side turn portions of at least some of the winding turns positioned in the at least one winding turn accommodating slot adjacent to said insulating covering, said insulating covering providing electrical insulating between the core and winding turns adjacent thereto; and winding termination means; said body of insulating material including a winding retaining means extending axially from an end face of the magnetic core and having a free extremity spaced from the end face, said body of insulating material defining receptacle means for at least a portion of said winding termination means; a bundle of winding end turns disposed adjacent to the winding retaining means and extending axially from a first locale in proximity to the core end face toward the free extremity of the winding retaining means; said winding retaining means having at least one tool admitting passage formed therein that extends axially from the free extremity of the winding retaining means along the bundle of winding end turns to a location proximate to the first locale, to facilitate removal of winding turns from the core; said winding termination means including at least one terminal element and an electrical interconnection between the at least one winding and the at least one terminal element; at least a portion of the at least one terminal element being received in and supported by said receptacle means.
Claim 4
Dependent Claim
299 words
A dynamoelectric machine comprising a magnetic core having a plurality of spaced apart tooth sections and core surfaces defining at least one winding turn accommodating slot; a body of insulating material molded in situ on the magnetic core that establishes an insulating covering at least for core surfaces defining the at least one winding turn accommodating slot; a plurality of winding turns having side turn and end turn portions, with at least part of the side turn portions of at least some of the winding turns positioned in the at least one winding turn accommodating slot adjacent to said insulating covering, said insulating covering providing electrical insulating between the core and winding turns adjacent thereto; and winding termination means; said body of insulating material including a winding retaining means extending axially from an end face of the magnetic core and having a free extremity spaced from the end face, said body of insulating material defining receptacle means for at least a portion of said winding termination means; a bundle of winding end turns disposed adjacent to the winding retaining means and extending axially from a first locale in proximity to the core end face toward the free extremity of the winding retaining means; said winding retaining means having at least one tool admitting passage formed therein that extends axially from the free extremity of the winding retaining means along the bundle of winding end turns to a location proximate to the first locale, to facilitate removal of winding turns from the core; said winding termination means including at least one terminal element and an electrical interconnection between the at least one winding and the at least one terminal element; at least a portion of the at least one terminal element being received in and supported by said receptacle means.
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |