US3689976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil transfer apparatus
Assignee: AO Smith Corp
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Filing: 1971-04-15
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Granted: 1972-09-12
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Expires: 1991-04-15
Abstract
Abstract Prewound coils are placed into stator slots of a dynamoelectric machine by an insertion apparatus which has a plurality of fixed blades arranged in a circle within the inside diameter of the stator. The blades are spaced to provide blade gaps corresponding in position to the stator slots, and a piston driven stripper operating within the circle of blades inserts the coils through the gaps and into the stator slots. The stripper carries movable blades that alternate with the fixed blades, and the blade gaps are off-center between the movable and fixed blades. The movable blades are removably attached to the stripper.
Inventors
- 👤 Glenn R Donovan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:32
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; Y10T29/53161
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
116 words
In a coil transfer apparatus for inserting coils in stator slots, the apparatus having a slotted cylindrical body defined by first elongated members spaced apart to provIde elongated slots, and having a movable stripper within the cylindrical body with stripper teeth extending into the elongated slots; the improvement comprising: a plurality of second elongated members disposed alternately with first elongated members in the perimeter of the cylindrical body, the second elongated members being spaced from adjacent first elongated members to provide additional slots into which stripper teeth extend; and the first and second elongated members having beveled longitudinal edges with alternate radii of curvature to shape the slots off-center between the first and second elongating members.
Claim 2
Dependent Claim
116 words
In a coil transfer apparatus for inserting coils in stator slots, the apparatus having a slotted cylindrical body defined by first elongated members spaced apart to provIde elongated slots, and having a movable stripper within the cylindrical body with stripper teeth extending into the elongated slots; the improvement comprising: a plurality of second elongated members disposed alternately with first elongated members in the perimeter of the cylindrical body, the second elongated members being spaced from adjacent first elongated members to provide additional slots into which stripper teeth extend; and the first and second elongated members having beveled longitudinal edges with alternate radii of curvature to shape the slots off-center between the first and second elongating members.
Claim 3
Dependent Claim
13 words
The apparatus of claim 1, wherein the second elongated members are removable blades.
Claim 4
Dependent Claim
47 words
The apparatus of claim 2, wherein the beveled edges of the removable blades each have a radius of curvature larger than the radius of curvature for the first elongated members, to shape the slots between the first and second elongated members off-center toward the first elongated members.
Claim 5
Dependent Claim
36 words
The apparatus of claim 1, wherein the second elongated members are blades attached to the movable stripper and are movable between adjacent first elongated members, and wherein the elongated members are fixed within the cylindrical body.
Claim 6
Dependent Claim
69 words
The apparatus of claim 1, wherein the apparatus is adaptable for inserting any wire size that said elongated slots can accept, and wherein the second elongated members are blades removably attached to the movable stripper and are dimensioned in accordance with the size of the wire being inserted to provide the slots between the blades and the first elongated members with the optimum width for the wire being inserted.
References Cited (Backward Citations)
US2432267A
Cited
US3559268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |