US3748511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stator lead anchoring and splice-insulating slot insulator structure and method
Assignee: Ametek Inc
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Filing: 1971-12-13
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Granted: 1973-07-24
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Expires: 1991-12-13
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
- 👤 W Crabb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:52
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/32; H02K3/325; H02K3/46; H02K3/52; H02K3/521; H02K3/522
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
An electromagnetic structure in an electric motor or the like having an iron core with at least one mouthed slot, a coil of wire wound on said core and into said slot, a lead element spliced to one end of the coil wire and a slot liner of insulating, generally sheet-like, material interposed in said slot between the coil wire and the walls of said slot, said liner preformed to have an inner panel, an outer panel and a portion joining said panels generally to conform respectively to an inner, an outer and a joining wall surface of the slot, the improvements comprising: said liner having a channel structure extending longitudinally of the slot direction, and adapted to form a channel for insulatingly receiving a portion of the length of a said lead element at the splicing end to be retained therein.
Claim 2
Dependent Claim
142 words
An electromagnetic structure in an electric motor or the like having an iron core with at least one mouthed slot, a coil of wire wound on said core and into said slot, a lead element spliced to one end of the coil wire and a slot liner of insulating, generally sheet-like, material interposed in said slot between the coil wire and the walls of said slot, said liner preformed to have an inner panel, an outer panel and a portion joining said panels generally to conform respectively to an inner, an outer and a joining wall surface of the slot, the improvements comprising: said liner having a channel structure extending longitudinally of the slot direction, and adapted to form a channel for insulatingly receiving a portion of the length of a said lead element at the splicing end to be retained therein.
Claim 3
Dependent Claim
50 words
The improvement as described in claim 1, wherEin said lead element is frictionally engaged and retained in said channel, to provide strain relief for a splice between the lead and coil wire, by pressure of the coil wire wound into said slot and communicated to the material of the channel.
Claim 4
Dependent Claim
35 words
The improvement as described in claim 1, wherein core structure impregnating varnish affords a bonding between said lead element and said channel to provide strain relief for a splice between the lead and coil wire.
Claim 5
Dependent Claim
31 words
The improvement as described in claim 1, wherein: said channel structure provides an insulating tubular formation for a splice between the end of said lead and an end of said coil.
Claim 6
Dependent Claim
46 words
The improvement as described in claim 1, wherein: said channel structure provides an insulating tubular formation for a splice between the end of said lead and an end of said coil, and said lead is anchored in said channel to provide strain relief for said splice.
Claim 7
Dependent Claim
48 words
The improvement as described in claim 1, wherein: said channel structure is provided by a trough-like longitudinal deformation in a panel of the liner, said channel structure including a liner portion engageable with a lead on a side opposite to the lead portion engaged in the trough-like deformation.
Claim 8
Dependent Claim
32 words
The improvement as described in claim 7, wherein said deformation runs through the entire longitudinal extent of the liner, and including an insulating strip bonded over the longitudinal extent of the trough-opening.
Claim 9
Dependent Claim
20 words
The improvement as described in claim 7, wherein: said deformation runs between parallel incisions spaced inward from the liner ends.
Claim 10
Dependent Claim
24 words
The improvement as described in claim 1, wherein: said channel structure is provided by a continuation of one said panel reflected back toward itself.
Claim 11
Dependent Claim
54 words
The improvement as described in claim 1, wherein: said channel structure is provided by a strip of insulating sheet material secured to and extending longitudinally on a main liner element integrally providing said panels and joining portion, said strip having longitudinal margins whereby it is secured, and between said margins, a trough-like longitudinal deformation.
References Cited (Backward Citations)
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US3219857A
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US3441759A
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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 |