Patent US3818571A successfully refreshed from Google Patents.
US3818571A
Expired / Lapsed
US
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Apparatus for inserting winding turns
Assignee: General Electric Co
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Filing: 1973-04-06
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Granted: 1974-06-25
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Expires: 1993-04-06
Abstract
Abstract Coil insertion tool elements have selected longitudinally extending surface portions contoured or curved to at least approximate curvature of bore defining surface of a tooth of laminated magnetic cores into which windings are to be injected. Tool elements include one or two tooth tip protecting or covering lips, and these lips or lip, rather than extending directly from curved surface portions, extend from relieved surface regions. These regions are at the arcuate extremities of longitudinally extending curved surfaces.
Inventors
- 👤 R Arnold
- 👤 F Koenig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:20
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/06; H02K15/062; H02K15/065; H02K15/067; H02K15/068; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/5313; Y10T29/53143
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
152 words
Coil insertion apparatus including a plurality of longitudinally extending members with selected adjacent ones of the longitudinally extending members mutually establishing winding turn accommodating gaps; at least some of the longitudinally extending members being disposed in an array and establishing surfaces along a path that at least aproximately corresponds to the bore of a preselected type of laminated magnetic core having winding admitting passages formed therein for accommodating winding turns during movement from at least one of the turn accommodating gaps; at least one of said longitudinally extending members being formed so that a radially outer portion, relative to the array, defines at least one curved surface along an arc that at least approximately corresponds to the bore of a core so that forces may be transmitted between said at least one longitudinally extending member and a bore defining surface of a core through a central portion of the longitudinally extending member.
Claim 2
Dependent Claim
152 words
Coil insertion apparatus including a plurality of longitudinally extending members with selected adjacent ones of the longitudinally extending members mutually establishing winding turn accommodating gaps; at least some of the longitudinally extending members being disposed in an array and establishing surfaces along a path that at least aproximately corresponds to the bore of a preselected type of laminated magnetic core having winding admitting passages formed therein for accommodating winding turns during movement from at least one of the turn accommodating gaps; at least one of said longitudinally extending members being formed so that a radially outer portion, relative to the array, defines at least one curved surface along an arc that at least approximately corresponds to the bore of a core so that forces may be transmitted between said at least one longitudinally extending member and a bore defining surface of a core through a central portion of the longitudinally extending member.
Claim 3
Dependent Claim
30 words
The structure of claim 1 wherein said at least one longitudinally extending member includes at least one lip extending outwardly for extension into a coil admitting entrance of a core.
Claim 4
Dependent Claim
37 words
The structure of claim 2 wherein said at least one lip extends from the body of said at least one longitudinally extending member and, in conjunction with the radially outer portion, defines a longitudinally extending relieved region.
Claim 5
Dependent Claim
134 words
A tool for use in coil insertion equipment, said tool comprising a longitudinally extending body portion having at least a portion of a longitudinally extending surface thereof formed to be non-planar and arcuate, said surface having a curvature corresponding at least approximately to the curvature of bore surfaces of a core into which windings are insertable during utilization of the tool; said tool further comprising at least one lip extending from said longitudinally extending body portion; said lip and said at least one part of said surface mutually defining an undercut region of the tool so that forces transmitted relative to said tool and a core may be transmitted through the body of the tool and so as to avoid stress concentrations at the juncture of the lip and the body of the tool.
Claim 6
Dependent Claim
134 words
A tool for use in coil insertion equipment, said tool comprising a longitudinally extending body portion having at least a portion of a longitudinally extending surface thereof formed to be non-planar and arcuate, said surface having a curvature corresponding at least approximately to the curvature of bore surfaces of a core into which windings are insertable during utilization of the tool; said tool further comprising at least one lip extending from said longitudinally extending body portion; said lip and said at least one part of said surface mutually defining an undercut region of the tool so that forces transmitted relative to said tool and a core may be transmitted through the body of the tool and so as to avoid stress concentrations at the juncture of the lip and the body of the tool.
Claim 7
Dependent Claim
16 words
The structure of claim 4 wherein at least two spaced apart longitudinally extending lips are provided.
Claim 8
Dependent Claim
71 words
A tool for use in the insertion of winding turns into a slot of a stator core, said tool comprising a body portion having a first portion particularly adapted to engage a bore defining surface of the core; said tool further comprising at least one lip for extension toward a slot in the core; said at least one lip joining the body of said tool along a longitudinally extending relievEd region.
Claim 9
Dependent Claim
71 words
A tool for use in the insertion of winding turns into a slot of a stator core, said tool comprising a body portion having a first portion particularly adapted to engage a bore defining surface of the core; said tool further comprising at least one lip for extension toward a slot in the core; said at least one lip joining the body of said tool along a longitudinally extending relievEd region.
Claim 10
Dependent Claim
19 words
The structure of claim 6 wherein at least two lips are provided at spaced apart regions of said tool.
Claim 11
Dependent Claim
47 words
The structure of claim 7 wherein a longitudinally extending surface portion of the tool exists between said two lips, and said surface is curved with a curvature that at least approximately corresponds to the curvature of the bore defining surface of a tooth of a magnetic core.
Claim 12
Dependent Claim
88 words
An array of coil insertion tools disposed about a center of curvature, at least one of the tools in the array having a curved surface segment corresponding at least approximately to a curved surface defining portion of a laminated magnetic core having a bore center when the bore center at least approximately coincides with the center of curvature of the array; said at least one tool including at least one lip extending from the body of said tool radially outwardly from the center of curvature of the array.
Claim 13
Dependent Claim
88 words
An array of coil insertion tools disposed about a center of curvature, at least one of the tools in the array having a curved surface segment corresponding at least approximately to a curved surface defining portion of a laminated magnetic core having a bore center when the bore center at least approximately coincides with the center of curvature of the array; said at least one tool including at least one lip extending from the body of said tool radially outwardly from the center of curvature of the array.
Claim 14
Dependent Claim
43 words
The structure of claim 9 wherein said lip joins another portion of said at least one tool at an undercut region; said undercut region extending longitudinally along the tool at least for a distance associated with the axial height of a magnetic core.
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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |