Patent US5379706A successfully refreshed from Google Patents.
Patent US3818587A successfully refreshed from Google Patents.
US3818587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for providing staggered joint, single turn, cut core laminations
Assignee: General Electric Co
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Filing: 1972-11-13
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Granted: 1974-06-25
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Expires: 1992-11-13
Abstract
Abstract A spirally wound roll of core steel is mounted on the arbor of a cutting and stacking machine. As the roll of core steel is cut by a moving blade, a table moves beneath the arbor at a constant speed catching each lamination as it is cut. The movement of the table as a function of the cutting speed of the blade provides for the offsetting of the ends of the cut laminations thereby providing staggered packets of laminations for later assembly into a staggered joint, single turn, cut core.
Inventors
- 👤 L Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:57
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/0206; H01F41/0213; Y; Y10; Y10S; Y10S83/00; Y10S83/924; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49073; Y10T29/49075; Y10T29/49078; Y10T29/51; Y10T29/5176; Y10T29/53; Y10T29/5313; Y10T29/5317; Y10T83/00; Y10T83/04; Y10T83/0476; Y10T83/202; Y10T83/2033; Y10T83/2037; Y10T83/2042
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
123 words
A method of making single turn cut core laminations with the ends of each lamination offset relative to adjacent laminations comprising the steps of winding a strip of electrical grade core steel into a spiral roll comprising a plurality of turns, cutting through the turns of said roll one at a time, each of the cut turns comprising a lamination, each of the cut laminations dropping from said roll to a flat surface and becoming stacked on said surface and moving each said cut lamination longitudinally a predetermined distance with respect to said roll prior to cutting the next lamination thereby to offset the ends of each said cut lamination said predetermined distance from the ends of the next cut lamination upon stacking.
Claim 2
Independent Claim
123 words
A method of making single turn cut core laminations with the ends of each lamination offset relative to adjacent laminations comprising the steps of winding a strip of electrical grade core steel into a spiral roll comprising a plurality of turns, cutting through the turns of said roll one at a time, each of the cut turns comprising a lamination, each of the cut laminations dropping from said roll to a flat surface and becoming stacked on said surface and moving each said cut lamination longitudinally a predetermined distance with respect to said roll prior to cutting the next lamination thereby to offset the ends of each said cut lamination said predetermined distance from the ends of the next cut lamination upon stacking.
Claim 3
Dependent Claim
47 words
A method as set forth in claim 1 in which the outer lamination turn of said roll is formed into a stacking ring after cutting and the remaining offset cut laminations are assembled into said stacking ring to form a single turn cut core having staggered joints.
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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |