US3629925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for compacting dynamoelectric machine coils with means for preventing lamination distortion
Assignee: Essex International Inc
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Filing: 1969-12-04
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Granted: 1971-12-28
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Expires: 1989-12-04
Abstract
Abstract Electrical surge apparatus for compacting dynamoelectric machine coils in the slots of an internally slotted, laminated stator core member and for forming the end turn portions of the coils outwardly away from the bore of the core member, which includes a resilient sleeve engaging the bore of the core and having portions extending axially outwardly beyond each end face, an expansible conductive sleeve engaging the inner surface of the resilient sleeve, a second resilient sleeve engaging the inner surface of the conductive sleeve, and a mandrel extending through and engaging the inner surface of the second resilient sleeve. A first compressing member mounted on one end of the mandrel engages one end of the second resilient sleeve and a second compressing member surrounds the mandrel and engages the other end of the second resilient sleeve. A fluid power cylinder is arranged to move the two compressing members toward each other so as to compress the second resilient sleeve therebetween thereby deforming the second resilient sleeve radially outwardly, expanding the conductive sleeve radially outwardly, and compressing the first resilient sleeve radially outwardly against the bore of the core so that the projecting portions are deformed radially outwardly respectively into engagement with the outer surfaces of the inner ends of the teeth of the respective end laminations of the core so as to prevent distortion of the teeth ends during application of the electrical surge to the field coils.
Inventors
- 👤 William N Brown Jr
- 👤 Robert J Eminger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:01
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/20; H02K15/28; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/4902; Y10T29/49073; Y10T29/53; Y10T29/5313; Y10T29/53143; Y10T29/53161
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
135 words
In electrical surge apparatus for compacting dynamoelectric machine field coils in the slots of an internally slotted, laminated stator core member and for forming the end turn portions of said coils outwardly away from the bore thereof: means for supporting a stator core member with the field coils positioned in the slots thereof; a member positioned in said bore of said core member when on said support means and having an expansible portion extending axially outwardly beyond the end lamination at one end face of said core; and means for expanding said portion radially outwardly into engagement with the outer surface of the inner ends of the teeth of said end lamination which define said slots therebetween thereby to prevent distortion of said teeth ends during application of the electrical surge to said field coils.
Claim 2
Dependent Claim
135 words
In electrical surge apparatus for compacting dynamoelectric machine field coils in the slots of an internally slotted, laminated stator core member and for forming the end turn portions of said coils outwardly away from the bore thereof: means for supporting a stator core member with the field coils positioned in the slots thereof; a member positioned in said bore of said core member when on said support means and having an expansible portion extending axially outwardly beyond the end lamination at one end face of said core; and means for expanding said portion radially outwardly into engagement with the outer surface of the inner ends of the teeth of said end lamination which define said slots therebetween thereby to prevent distortion of said teeth ends during application of the electrical surge to said field coils.
Claim 3
Dependent Claim
61 words
The apparatus of claim 1 wherein said member extends through said bore and has a second expansible portion extending axially outwardly beyond the end lamination at the other end face of said core, said expanding means also expanding said second portion radially outwardly into engagement with the outer surface of the inner ends of the teeth of said last-named end lamination.
Claim 4
Dependent Claim
13 words
The apparatus of claim 1 wherein said member is formed of resilient material.
Claim 5
Dependent Claim
47 words
The apparatus of claim 1 wherein said member comprises a sleeve of resilient material having another portion engaging the surface of said bore, said expanding means including means for compressing said other portion radially outwardly against said bore surface there by deforming said expansible portion radially outwardly.
Claim 6
Dependent Claim
47 words
The apparatus of claim 4 wherein said compressing means includes a member of conductive material engaging the inner surface of both said expansible and other portions of said resilient sleeve, said conductive member having means for radially expanding the same thereby to compress said other sleeve poRtion.
Claim 7
Dependent Claim
47 words
The apparatus of claim 5 wherein said conductive member is a sleeve, said last-named expanding means comprising a plurality of elongated slots formed in said conductive sleeve and extending axially alternately in opposite directions from the opposite ends thereof thereby defining a plurality of resiliently expandable segments.
Claim 8
Dependent Claim
31 words
The apparatus of claim 6 wherein said compressing means further includes means engaging the interior of said conductive sleeve for forcing said segments radially outwardly thereby to compress said resilient sleeve.
Claim 9
Dependent Claim
46 words
The apparatus of claim 7 wherein said forcing means comprises a second sleeve of resilient material, a rigid mandrel engaging the interior of said second sleeve, and means for axially compressing said second sleeve thereby causing the same to deform radially outwardly against said conductive sleeve.
Claim 10
Dependent Claim
57 words
The apparatus of claim 8 wherein said axial compressing means comprises first means for engaging one end of said second sleeve, second means on said mandrel for engaging the other end of said sleeve, and means for moving said mandrel axially in one direction thereby to compress said second sleeve between said first and second engaging means.
Claim 11
Dependent Claim
43 words
The apparatus of claim 9 wherein said axial compressing means further comprises second means for moving said first engaging means axially in a direction opposite said one direction simultaneously with said movement of said mandrel and second engaging means in said one direction.
Claim 12
Dependent Claim
96 words
The apparatus of claim 10 wherein said first-named moving means comprises a free-floating fluid power cylinder having a piston rod connected to said mandrel, said second moving means comprising at least one push-rod connected to one of said first engaging means and cylinder and normally axially spaced from the other whereby retraction of said piston rod causes said mandrel and second engaging means to move in said one direction and said push rod to engage the other of said first engaging means and cylinder thereby simultaneously to move said first engaging means in said opposite direction.
Claim 13
Dependent Claim
56 words
The apparatus of claim 10 wherein said second sleeve comprises first and second parts disposed in end-to-end relationship with a spacing member therebetween, said parts being generally equal in length, said first engaging means engaging said first part and said second engaging means engaging said second part, said spacing member being supported by said conductive sleeve.
Claim 14
Dependent Claim
97 words
The apparatus of claim 10 wherein said first-named resilient sleeve extends completely through said bore and has a second expansible portion extending axially outwardly beyond the end lamination at the other end face of said core, said conductive sleeve being generally coextensive in length with the axial length of said first-named resilient sleeve and engaging the inner surface of said second expansible portion so that upon expansion of said resilient sleeve, said second expansible portion is deformed radially outwardly into engagement with the outer surfaces of the inner ends of the teeth of said last-named end lamination.
Claim 15
Dependent Claim
159 words
The apparatus of claim 13 wherein said mandrel has spaced opposite ends, said second engaging means comprising a second member secured to one end of said mandrel, said mandrel having a portion extending beyond said other end of said second sleeve and terminating at the other end of said mandrel, said first engaging means comprising a first member surrounding said mandrel portion and relatively axially movable with respect thereto, said first-named moving means comprising a free-floating fluid power cylinder having a piston rod connected to said other end of said mandrel, said second moving means comprising at least one push-rod having one end connected to said first member and having its other end normally spaced from said cylinder whereby retraction of said piston rod causes said mandrel and second member to move in said one direction and said other end of said push rod to engage said cylinder thEreby simultaneously to move said first member in said opposite direction.
Claim 16
Dependent Claim
75 words
The apparatus of claim 14 wherein said mandrel is cylindrical, said second sleeve comprising first and second annular parts disposed in end-to-end relationship with an annular spacing member therebetween, said parts being generally equal in length, said first member engaging said first part and said second member engaging said second part, said spacing member being slidably seated in an annular groove formed in the inner surface of said conductive member generally midway between its ends.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |