Epoxy coated motor with shading band having tapered edges

Details Epoxy coated motor with shading band having tapered edges Epoxy coated motor with shading band having tapered edges

1990-04-23

1991-08-27

Wong, Peter S.

Electrical generator or motor structure

Dynamoelectric

Rotary

310172, H02K 1710

Patent

active

050436120

ABSTRACT:
A shading band for use in creating a shading pole in a shaded pole motor has tapered edges along its length, instead of the square cross-sectional edges with 90.degree. inside angles of the prior art, in order to increase the thickness of epoxy deposited thereon which insulates the winding slot within which the shading band extends. The shading band may be formed with a cross-sectional shape of many different geometries, as long as its cross-sectional shape does not include inside angles less than 90.degree.. The edge height for each shading band should be controlled in order to maintain an effective angle of transition from the wire slot sidewall tot he shading band of greater than about 90.degree..

REFERENCES:
patent: 2025817 (1935-12-01), Lanz
patent: 3122667 (1961-05-01), Baciu
patent: 3191083 (1965-06-01), Meijer
patent: 3975654 (1976-08-01), Dryburgh

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