Epoxy coated motor with shading band having tapered edges
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United States of America Patent
Stats
-
Aug 27, 1991
Grant Date -
N/A
app pub date -
Apr 23, 1990
filing date -
Apr 23, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
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..
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Cited Art Landscape
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