Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1985-08-14
1986-07-29
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 90, 310 91, 310217, 310259, H02K 500
Patent
active
046032738
ABSTRACT:
A dynamoelectric machine is provided with a laminated stator having a central opening for receiving a rotor and a plurality of longitudinal slots adjacent to its peripheral surface. Each of these longitudinal slots contains an extended cleat. The cleats extend beyond each end of the stator stack and are shaped to define a tab and shoulder on each end. A pair of end bells are positioned on opposite ends of the stator stack and each includes a central aperture in axial alignment with the central opening of the stator stack and a plurality of holes for receiving the extended cleat tabs. During assembly, an expandable arbor is positioned within the central opening and the end bell apertures to provide positive axial alignment between the end bells and the stator stack. Each end bell aperture has an initial diameter which is less than the diameter of the stator stack central opening. However expansion of the arbor resizes the end bell apertures so that their diameters become approximately equal to that of the central opening. The extended cleat tabs are then attached to the motor end bells, thereby securing the stator stack, cleats and end bells into a single unit.
REFERENCES:
patent: 3209434 (1965-10-01), Anderson, Jr.
patent: 3256590 (1966-06-01), Myers
patent: 3714705 (1973-02-01), Lewis
patent: 3867654 (1975-02-01), Otto
patent: 4060744 (1977-11-01), Starcevic
patent: 4471246 (1984-09-01), Paillet
patent: 4480378 (1984-11-01), White et al.
patent: 4494027 (1985-01-01), Otto
Lenart R. P.
Skudy R.
Westinghouse Electric Corp.
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