US3862492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for production of stator lead anchoring and splice-insulating slot insulator structure
Assignee: Ametek Inc
•
Filing: 1973-07-20
•
Granted: 1975-01-28
•
Expires: 1993-07-20
Abstract
Abstract An electric motor field or stator core slot insulating liner having a lead enclosing channel structure receives, and during coil winding holds, an insulated stator lead with one end slightly projecting for splicing thereto of a corresponding coil magnet wire end after completion of coil winding. The spliced lead end is drawn into the channel, thus affording splice insulation and lead anchoring; any subsequent stator impregnation with insulating varnish contributing to splice insulation and to lead anchoring effect of magnet coil pressure against the liner and channel. After winding lead insertion at times is preferable.
Inventors
- 👤 William A Crabb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:32
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/32; H02K3/325; H02K3/46; H02K3/52; H02K3/521; H02K3/522; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
211 words
A method of fabricating an electromagnetic structure having an iron core with at least one mouth slot with inner, outer and joining wall surfaces, a coil of wire wound on said core and into said slot, a lead element having a splicing end spliced to one end of the coil wire, and a slot insulating liner of insulating, generally sheet-like, material interposed in said slot between the coil wire and the walls of said slot, the steps of preforming a said slot insulating liner to have an inner panel, an outer panel and a portion joining said panels for general conformity respectively to sAid inner outer and a joining wall surfaces of the slot, and to have a channel structure extending longitudinally of the liner, and adapted to form a channel insulatingly receiving a portion of the length of a said lead element at the splicing end to be retained therein; providing a said core having a said slot therein; emplacing a preformed said slot insulating liner in the said slot; inserting a said lead element in said channel structure with its splicing end projecting endwise from the channel; winding wire into the slot to provide a core winding with a wire end adjacent said splicing end; and splicing said ends.
Claim 2
Independent Claim
211 words
A method of fabricating an electromagnetic structure having an iron core with at least one mouth slot with inner, outer and joining wall surfaces, a coil of wire wound on said core and into said slot, a lead element having a splicing end spliced to one end of the coil wire, and a slot insulating liner of insulating, generally sheet-like, material interposed in said slot between the coil wire and the walls of said slot, the steps of preforming a said slot insulating liner to have an inner panel, an outer panel and a portion joining said panels for general conformity respectively to sAid inner outer and a joining wall surfaces of the slot, and to have a channel structure extending longitudinally of the liner, and adapted to form a channel insulatingly receiving a portion of the length of a said lead element at the splicing end to be retained therein; providing a said core having a said slot therein; emplacing a preformed said slot insulating liner in the said slot; inserting a said lead element in said channel structure with its splicing end projecting endwise from the channel; winding wire into the slot to provide a core winding with a wire end adjacent said splicing end; and splicing said ends.
Claim 3
Dependent Claim
109 words
A method as described in claim 1 of fabricating a said electromagnetic structure as a stator for an dynamo-electric machine, wherein said core is provided as a stator core having a plurality of said slots with at least two poles defined by said slots; slot insulating liners are emplaced in the respective slots with at least one of the slots having a said preformed channel structure into which a said lead element is inserted with its splicing end projecting endwise from the channel; and wire is wound into the slots to provide stator windings with a wire end adjacent said splicing end for the described splicing of said ends.
Claim 4
Dependent Claim
40 words
The method as described in claim 1 wherein said channel structure is provided as an insulating tubular structure and including the further step of pulling the free end of said lead element to draw the splice into said channel structure.
Claim 5
Dependent Claim
21 words
The method as described in claim 2 including the further step of impregnating the wound stator after completion of the splicing.
Claim 6
Dependent Claim
36 words
The method as described in claim 1 wherein the channel structure is so located that pressure of wire wound into the respective slot is communicated through the liner to the lead element in said channel structure.
References Cited (Backward Citations)
US863207A
Cited
US2872599A
Cited
US3027475A
Cited
US3219857A
Cited
US3457442A
Cited
US3664017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |