Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1993-02-25
1994-01-25
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 42, 310 89, 310 91, 310258, H02K 118
Patent
active
052818810
ABSTRACT:
A frame and magnet assembly for a dynamoelectric machine. The assembly includes an imperforate frame member formed of metallic magnetic material. A one-piece tubular imperforate stainless steel magnet supporting part is disposed within the frame. The magnet supporting part has pockets that contain permanent magnets. The opposite ends of the frame have annular chamfered or tapered surfaces which intersect a tubular inner surface of the frame to define annular ridges. Annular end portions of the magnet support are bent into engagement with the tapered surfaces on the frame to thereby provide ridges on the magnet support that are aligned with the ridges on the frame. The ridges on the frame are welded to the ridges on the magnet support by a welding current that is supplied to a pair of welding electrodes that respectively engage the ridges on the magnet support. The welding electrodes have annular tapered surfaces which have line contact with the ridges on the magnet support.
REFERENCES:
patent: 3772546 (1973-11-01), Means
patent: 3789250 (1974-01-01), Macoit
patent: 3790830 (1974-02-01), Bonfiglio
patent: 4587449 (1986-05-01), West
patent: 4769624 (1988-09-01), Merritt et al.
patent: 5105114 (1992-04-01), Sickle et al.
Gentry Ronald D.
Heuer Kenneth P.
Van Sickle Richard A.
General Motors Corporation
Meland Creighton R.
Simon A. Luke
Skudy R.
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