US3748510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine winding connection insulator
Assignee: General Electric Co
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Filing: 1971-10-26
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Granted: 1973-07-24
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Expires: 1991-10-26
Abstract
Abstract Coils of electric motor phase windings on a core have end turns extending beyond core end faces and have protected and electrically isolated interpole and/or external lead connections. The isolation and protection is provided by an insulator having at least one substantially enclosed receptacle open only at one or both ends thereof. Insulators in one form include a first connection receptacle wall portion formed from a single thickness of material; a second connection receptacle wall portion of a double thickness of material; and means for positively anchoring the insulator in a desired position relative to the winding end turns. In a preferred illustrated form, the connection insulator may include receptacles for receiving two separate winding connections that are to be insulated from each other, and includes an insulation barrier between the two receptacles.
Inventors
- 👤 Neal W Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:07
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/46; H02K3/50; H02K3/32; H02K3/38
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
192 words
An inductive assembly including a magnetic core for use in an electrical inductive device; at least one winding comprised of wire conductors arranged on the magnetic core with winding turn portions projecting beyond at least one face of the core, at least one end of said winding including a winding lead wire; at least one external lead wire; means for electrically connecting a portion of the winding lead wire and a portion of the external lead wire; and a body of electrical insulation accommodating said means for electrically connecting; said body of electrical insulation including a first part for receiving at least the electrically connected portions of the winding lead wire and external lead wire, and anchoring means for holding said first part in a predetermined relationship relative to said winding turn portions; said anchoring means including at least one leg extending from said first part and along the winding turn portions, and at least one uncinate portion disposed adjacent to the winding turn portions and locked with at least one segment of wire conductor to thereby resist movement of the b ody of insulation relative to said at least one winding.
Claim 2
Dependent Claim
192 words
An inductive assembly including a magnetic core for use in an electrical inductive device; at least one winding comprised of wire conductors arranged on the magnetic core with winding turn portions projecting beyond at least one face of the core, at least one end of said winding including a winding lead wire; at least one external lead wire; means for electrically connecting a portion of the winding lead wire and a portion of the external lead wire; and a body of electrical insulation accommodating said means for electrically connecting; said body of electrical insulation including a first part for receiving at least the electrically connected portions of the winding lead wire and external lead wire, and anchoring means for holding said first part in a predetermined relationship relative to said winding turn portions; said anchoring means including at least one leg extending from said first part and along the winding turn portions, and at least one uncinate portion disposed adjacent to the winding turn portions and locked with at least one segment of wire conductor to thereby resist movement of the b ody of insulation relative to said at least one winding.
Claim 3
Dependent Claim
23 words
The structure of claim 1 wherein the means for anchoring includes a plurality of uncinate portions disposed adjacent to the winding turn portions.
Claim 4
Dependent Claim
57 words
The structure of claim 1 wherein the first part of the body of insulation comprises a receptacle having at least one substantially continuous peripheral wall separating the connected portions of the winding and external lead wires, and wherein inadvertent movement of a winding turn portion into the receptacle is inhibited by the peripheral wall of the receptacle.
Claim 5
Dependent Claim
21 words
The structure of claim 3 wherein the receptacle includes a collapsed wall section that substantially closes one end of the receptacle.
Claim 6
Dependent Claim
19 words
The structure of claim 3 wherein the body of insulation includes at least two electrically isolated conNection receiving receptacles.
Claim 7
Dependent Claim
55 words
The structure of claim 3 wherein the peripheral wall is formed of a layer of sheet material and the receptacle includes a second layer of sheet material disposed along at least a portion of the peripheral wall to thereby provide a double layer of insulation along said at least a portion of the peripheral wall.
Claim 8
Dependent Claim
100 words
The structure of claim 6 further comprising a second winding having winding turn portions disposed adacent to the winding turn portions of said at least one winding; a second body of insulation disposed between the winding turn portions of said at least one winding and said second winding; and wherein the at least one leg is positioned between the second body of insulation and the winding turn portions of a selected one of the windings with said double layer of insulation and said uncinate portion being positioned adjacent to the winding turn portions of said selected one of the windings.
Claim 9
Dependent Claim
128 words
A stator for use in a dynamoelectric machine comprising a magnetic core; at least one winding arranged on said core including a number of wire coils having end turns projecting beyond at least one face of the core; connection means electrically joining at least one terminal end of said winding to the end of at least one wire conductor; and an electrical insulator accommodating said connection means; said insulator comprising an elongate tubular member having a continuous peripheral wall that defines a receptacle having at least one open end; said insulator further including a leg extending along a plurality of said end turns, with the peripheral wall of the tubular member forming a barrier against movement of an end turn segment along said leg into the elongate receptacle.
Claim 10
Dependent Claim
128 words
A stator for use in a dynamoelectric machine comprising a magnetic core; at least one winding arranged on said core including a number of wire coils having end turns projecting beyond at least one face of the core; connection means electrically joining at least one terminal end of said winding to the end of at least one wire conductor; and an electrical insulator accommodating said connection means; said insulator comprising an elongate tubular member having a continuous peripheral wall that defines a receptacle having at least one open end; said insulator further including a leg extending along a plurality of said end turns, with the peripheral wall of the tubular member forming a barrier against movement of an end turn segment along said leg into the elongate receptacle.
Claim 11
Dependent Claim
168 words
A stator for use in an electric motor comprising a magnetic core; a plurality of phase winding arranged on said core to form a plurality of poles having coils composed of wire conductors, said coils having end turns projecting beyond at least one face of the core, with at least some of the end turns of one phase winding closely adjacent to at least some of the end turns of the another phase winding; connection means electrically joining at least one lead wire to an end of at least one of said phase windings; at least one eleongate insulator formed from one sheet of electrically insulating material accommodating the at least one connection means; said one sheet of electrically insulating material having first and second spaced apart portions thereof secured together at a seam exnding along said elongate insulator, said elongate insulator including at least first and second receptacles separated from one another by third and fourth secured together portions of the one sheet of electrically insulating materail.
Claim 12
Dependent Claim
168 words
A stator for use in an electric motor comprising a magnetic core; a plurality of phase winding arranged on said core to form a plurality of poles having coils composed of wire conductors, said coils having end turns projecting beyond at least one face of the core, with at least some of the end turns of one phase winding closely adjacent to at least some of the end turns of the another phase winding; connection means electrically joining at least one lead wire to an end of at least one of said phase windings; at least one eleongate insulator formed from one sheet of electrically insulating material accommodating the at least one connection means; said one sheet of electrically insulating material having first and second spaced apart portions thereof secured together at a seam exnding along said elongate insulator, said elongate insulator including at least first and second receptacles separated from one another by third and fourth secured together portions of the one sheet of electrically insulating materail.
Claim 13
Dependent Claim
24 words
The structure of claim 9 wherein the insulator includes a depending leg anchored against end turns of at least one of the phase windings.
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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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |