US3872568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Short stroke dynamoelectric machine coil and wedge inserting apparatus
Assignee: Essex International Inc
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Filing: 1974-04-17
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Granted: 1975-03-25
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Expires: 1994-04-17
Abstract
Abstract Apparatus for inserting prewound coils and slot wedges into the slots of an internally slotted dynamoelectric machine stator core member. The apparatus includes wedge pushing elements actuated by a hydraulic ram. A group of wedges is pushed by the pushing elements from a magazine into wedge guides by a stroke of the ram into stator slots. More specifically and alternatively, the apparatus includes first and second axially spaced wedge pushing elements actuated by a hydraulic ram. A first group of wedges is pushed by the first pushing element from a magazine into wedge guides by a stroke of the ram, and the first group of wedges is pushed by the second pushing element from the wedge guides into stator slots, as a second group of wedges is pushed from the magazine into the wedge guides by the next stroke of the ram.
Inventors
- 👤 Charles W Morr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:57
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/06; H02K15/062; H02K15/065; H02K15/067; H02K15/068; H02K15/13; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/5313; Y10T29/53143; Y10T29/53161; Y10T29/53252; Y10T29/53478
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
443 words
In apparatus for inserting prewound coils and slot wedges into the slots of an internally slotted dynamoelectric machine stator core member, said apparatus including a plurality of elongated, axially extending parallel blade elements defining a bore having an axis and having outer surfaces, said blade elements being spaced about said bore and defining radially and axially extending spaces therebetween, said blade elements having distal ends and rear portions, the outer surfaces of said distal ends being adapted to engage the inner ends of the teeth of a stator core member which define said slots with the spaces between said blade elements being in axial alignment with and communicating with respective slots, a plurality of elongated, axially extending, parallel slot wedge guide elements respectively in axial and radial alignment with said blade elements and defining first wedge guide slots therebetween respectively in axial and radial alignment with said blade element spaces and in axial alignment with said stator core member slots, said guide elements respectively abutting the outer surfaces of the rear portions of said blade elements and having forward ends which are spaced rearwardly from said distal ends of said blade elements and also having rear portions, a coil stripper member mounted for axial movement in said bore, first means for moving said stripper member axially through said bore within said blade elements, means extending rearwardly from said rear portions of said wedge guide members for receiving slot wedges and having a plurality of elongated, axially extending, second wedge guide slots formed therein adapted respectively to receive slot wedges at a first location, said second wedge guide slots being respectively in axial alignment with said first wedge guide slots and communicaTing therewith, and means for pushing said slot wedges axially forwardly toward said distal ends of said blade elements from said first location through said first and second wedge guide slots and into said core member slots; the improvement wherein said pushing means comprises first means for pushing said slot wedges forwardly from said first location through said second wedge guide slots to a second location in said first wedge guide slots spaced rearwardly from said forward ends of said wedge guide elements, second means spaced axially forwardly from said first pushing means for pushing said slot wedges forwardly from said second location through said first wedge guide slots and into said stator core slots, and second means for moving said first and second pushing means forwardly simultaneously whereby a first group of slot wedges are pushed from said second location into said stator core slots as a second group of slot wedges are pushed from said first location to said second location.
Claim 2
Dependent Claim
443 words
In apparatus for inserting prewound coils and slot wedges into the slots of an internally slotted dynamoelectric machine stator core member, said apparatus including a plurality of elongated, axially extending parallel blade elements defining a bore having an axis and having outer surfaces, said blade elements being spaced about said bore and defining radially and axially extending spaces therebetween, said blade elements having distal ends and rear portions, the outer surfaces of said distal ends being adapted to engage the inner ends of the teeth of a stator core member which define said slots with the spaces between said blade elements being in axial alignment with and communicating with respective slots, a plurality of elongated, axially extending, parallel slot wedge guide elements respectively in axial and radial alignment with said blade elements and defining first wedge guide slots therebetween respectively in axial and radial alignment with said blade element spaces and in axial alignment with said stator core member slots, said guide elements respectively abutting the outer surfaces of the rear portions of said blade elements and having forward ends which are spaced rearwardly from said distal ends of said blade elements and also having rear portions, a coil stripper member mounted for axial movement in said bore, first means for moving said stripper member axially through said bore within said blade elements, means extending rearwardly from said rear portions of said wedge guide members for receiving slot wedges and having a plurality of elongated, axially extending, second wedge guide slots formed therein adapted respectively to receive slot wedges at a first location, said second wedge guide slots being respectively in axial alignment with said first wedge guide slots and communicaTing therewith, and means for pushing said slot wedges axially forwardly toward said distal ends of said blade elements from said first location through said first and second wedge guide slots and into said core member slots; the improvement wherein said pushing means comprises first means for pushing said slot wedges forwardly from said first location through said second wedge guide slots to a second location in said first wedge guide slots spaced rearwardly from said forward ends of said wedge guide elements, second means spaced axially forwardly from said first pushing means for pushing said slot wedges forwardly from said second location through said first wedge guide slots and into said stator core slots, and second means for moving said first and second pushing means forwardly simultaneously whereby a first group of slot wedges are pushed from said second location into said stator core slots as a second group of slot wedges are pushed from said first location to said second location.
Claim 3
Dependent Claim
192 words
The apparatus of claim 1 wherein said rear portions of said wedge guide elements are spaced about an extension of said bore, said first wedge guide slots communicating with said bore extension, said second pushing means being axially movable by said second moving means between a first position spaced rearwardly from said second location and a second position adjacent said forward ends of said wedge guide members, said second pushing means including a plurality of pushing elements and means for mounting said pushing elements for radial movement between retracted positions within said bore extension and protracted positions extending respectively radially outwardly into said first wedge guide slots, said second moving means including first means for actuating said pushing elements to said protracted positions thereof in response to forward movement of said second moving means whereby said pushing elements respectively engage said slot wedges at said second location and push the same forwardly, and second means for actuating said pushing elements to said retracted positions thereof in response to rearward movement of said second moving means whereby said pushing elements move rearwardly under said second group of slot wedges at said second location.
Claim 4
Dependent Claim
120 words
The apparatus of claim 2 wherein said first actuating means comprises means for providing a lost-motion connection between said second moving means and mounting means which permits limited forward and rearward movement of said second moving means with respect to said mounting means and thereafter moves said mounting means and pushing elements with said second moving means, cooperating cam means on said second moving means and pushing elements for biasing pushing elements to said protracted positions in response to said limited forward movement of said second moving means, said second actuating means comprising resilient means acting on said pushing elements and biasing the same to said retracted positions in response to said limited rearward movement of said second moving means.
Claim 5
Dependent Claim
89 words
The apparatus of claim 3 wherein said first moving means comprises an elongated rod member extending coaxially rearwardly within said bore and bore extension, said mounting means being slidably mounted on said rod member, said mounting means including a portion which engages said stripper member when said second moving member has moved said second pushing means forwardly to a third position intermediate said first and second positions and which thereafter moves said stripper member forwardly in said bore in response to further forward movement of said second moving means.
Claim 6
Dependent Claim
53 words
The apparatus of claim 4 wherein said second moving means comprises an elongated hollow sleeve member which coaxially receives said rod member when said second pushing means is moved forwardly from said first position thereof, said sleeve member having a forward end, said cam means comprising a cam surface on said forward end.
Claim 7
Dependent Claim
100 words
The apparatus of claim 5 wherein said receiving means deFines a second bore coaxial with said first-named bore, said sleeve member extending through said second bore and having a rear end, said second wedge guide slots communicating with said second bore, said first pushing means comprising a member secured to said rear end of said sleeve member for axial movement in said second bore and having a second plurality of pushing elements thereon extending radially outwardly into said second wedge guide slots for engaging said slot wedges thereby to push the same forwardly upon forward movement of said sleeve member.
Claim 8
Dependent Claim
42 words
The apparatus of claim 6 wherein said receiving means is a slot wedge magazine member, and further comprising means for mounting said magazine member for rotation about said axis, and power means operatively coupled to said sleeve member for moving the same.
Claim 9
Dependent Claim
78 words
The apparatus of claim 1 wherein said receiving means defines a second bore coaxial with said first-named bore, said second moving means extending through said second bore, said second wedge guide slots communicating with said second bore, said first pushing means including a plurality of pushing elements extending radially outwardly from said second bore into said second wedge guide slots for engaging said slot wedges to push the same forwardly upon forward movement of said second moving means.
Claim 10
Dependent Claim
59 words
The apparatus of claim 8 wherein said first pushing means further includes a member secured to said second moving means for axial movement in said second bore and having said pushing elements extending radially outwardly therefrom, and further comprising power means acting on said second moving means for axially moving the same and said first and second pushing means.
Claim 11
Dependent Claim
233 words
The apparatus of claim 8 wherein said second moving means comprises an axially elongated operating member coaxial with said second bore and having a forward end with an annular cam surface formed thereon, said first wedge guide slots communicating with said first-named bore, said second pushing means comprising a mounting member slidably mounted on said forward end of said operating member, means for providing limited forward and rearward lost-motion movement of said operating member with respect to said mounting member and for thereafter moving said mounting member axially with said operating member upon further movement thereof, said mounting member having a plurality of radially extending slots formed therein communicating with said cam surface, a plurality of pushing elements respectively movably seated in said mounting member slots and having radially inner ends engaging said cam surface, said pushing elements having retracted positions with the radially outer ends thereof within said wedge guide members and protracted positions with said outer ends extending into said first wedge guide slots, said pushing elements being biased outwardly to said protracted positions thereof by said cam surface in response to said lost-motion forward movement of said operating member and being retained in said protracted positions by said cam surface during further forward movement of said operating member whereby said outer ends engage said slot wedges and move the same forwardly from said second location upon said further forward movement.
Claim 12
Dependent Claim
68 words
The apparatus of claim 10 wherein said outer ends of said pushing elements respectively have grooves formed therein, and further comprising a garter spring seated in said grooves for biasing said pushing elements inwardly to said retracted positions thereof in response to said lost-motion rearward movement of said operating member and for retaining said pushing elements in said retracted positions during further rearward movement of said operating member.
Claim 13
Dependent Claim
352 words
In apparatus for inserting prewound coils and slot wedges into the slots of an internally slotted dynamoelectric machine stator core member, said apparatus including a plurality of elongated, axially extending parallel blade elements defining a bore having an axis and having outer surfaces, said blade elemeNts being spaced about said bore and defining radially and axially extending spaces therebetween, said blade elements having distal ends and rear portions, the outer surfaces of said distal ends being adapted to engage the inner ends of the teeth of a stator core member which define said slots with the spaces between said blade elements being in axial alignment with and communicating with respective slots, a plurality of elongated, axially extending, parallel slot wedge guide elements respectively in axial and radial alignment with said blade elements and defining first wedge guide slots therebetween respectively in axial and radial alignment with said blade element spaces and in axial alignment with said stator core member slots, said guide elements respectively abutting the outer surfaces of the rear portions of said blade elements and having forward ends which are spaced rearwardly from said distal ends of said blade elements and also having rear portions, a coil stripper member mounted for axial movement in said bore, first means for moving said stripper member axially through said bore within said blade elements, means extending rearwardly from said rear portions of said wedge guide members for receiving slot wedges and having a plurality of elongated, axially extending, second wedge guide slots formed therein adapted respectively to receive slot wedges at a first location, said second wedge guide slots being respectively in axial alignment with said first wedge guide slots and communicating therewith, and means for pushing said slot wedges axially forwardly toward said distal ends of said blade elements from said first location through said first and second wedge guide slots and into said core member slots; the improvement wherein said pushing means comprises means for pushing said slot wedges forwardly from said first location through said second wedge guide slots and said first wedge guide slots into said stator core slots.
Claim 14
Dependent Claim
352 words
In apparatus for inserting prewound coils and slot wedges into the slots of an internally slotted dynamoelectric machine stator core member, said apparatus including a plurality of elongated, axially extending parallel blade elements defining a bore having an axis and having outer surfaces, said blade elemeNts being spaced about said bore and defining radially and axially extending spaces therebetween, said blade elements having distal ends and rear portions, the outer surfaces of said distal ends being adapted to engage the inner ends of the teeth of a stator core member which define said slots with the spaces between said blade elements being in axial alignment with and communicating with respective slots, a plurality of elongated, axially extending, parallel slot wedge guide elements respectively in axial and radial alignment with said blade elements and defining first wedge guide slots therebetween respectively in axial and radial alignment with said blade element spaces and in axial alignment with said stator core member slots, said guide elements respectively abutting the outer surfaces of the rear portions of said blade elements and having forward ends which are spaced rearwardly from said distal ends of said blade elements and also having rear portions, a coil stripper member mounted for axial movement in said bore, first means for moving said stripper member axially through said bore within said blade elements, means extending rearwardly from said rear portions of said wedge guide members for receiving slot wedges and having a plurality of elongated, axially extending, second wedge guide slots formed therein adapted respectively to receive slot wedges at a first location, said second wedge guide slots being respectively in axial alignment with said first wedge guide slots and communicating therewith, and means for pushing said slot wedges axially forwardly toward said distal ends of said blade elements from said first location through said first and second wedge guide slots and into said core member slots; the improvement wherein said pushing means comprises means for pushing said slot wedges forwardly from said first location through said second wedge guide slots and said first wedge guide slots into said stator core slots.
Claim 15
Dependent Claim
52 words
The apparatus of claim 12 wherein said pushing means comprises a supporting member mounted for movement in parallelism with said wedge guide slots, a plurality of pushing elements on said supporting member extending radially outwardly into said wedge guide slots to push the same forwardly upon forward movement of said supporting member.
Claim 16
Dependent Claim
58 words
The apparatus of claim 13 wherein said first moving means includes an elongated rod member extending coaxially rearwardly within said bore and extension thereof, an elongated hollow sleeve which coaxially receives said rod member when said pushing means is moved forwardly from the rearmost position thereof, said supporting member being mounted on said hollow sleeve and movable therewith.
Claim 17
Dependent Claim
32 words
The apparatus of claim 12 wherein the rear portions of said wedge guide elements are spaced about an extension of said bore, said first wedge guide slots communicating with said bore extension.
Claim 18
Dependent Claim
87 words
The apparatus of claim 15 wherein said receiving means defines a second bore coaxial with said first-named bore, said second wedge guide slots communicating with said second bore, said first pushing means comprising a member secured to said rear end of said sleeve member for axial movement in said second bore and having a second plurality of pushing elements thereon extending radially outwardly into said second wedge guide slots for engaging said slot wedges thereby to push the same forwardly upon forward movement of said sleeve member.
Claim 19
Dependent Claim
42 words
The apparatus of claim 16 wherein said receiving means is a slot wedge magazine member, and further comprising means for mounting said magazine member for rotation about said axis, and power means operatively coupled to said sleeve member for moving the same.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |