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Insulation assembly for electric machine

United States Patent

October 15, 2013
View the Complete Patent at the US Patent & Trademark Office
An insulation assembly is provided that includes a generally annularly-shaped main body and at least two spaced-apart fingers extending radially inwards from the main body. The spaced-apart fingers define a gap between the fingers. A slot liner may be inserted within the gap. The main body may include a plurality of circumferentially distributed segments. Each one of the plurality of segments may be operatively connected to another of the plurality of segments to form the continuous main body. The slot liner may be formed as a single extruded piece defining a plurality of cavities. A plurality of conductors (extendable from the stator assembly) may be axially inserted within a respective one of the plurality of cavities. The insulation assembly electrically isolates the conductors in the electric motor from the stator stack and from other conductors.
Rhoads; Frederick W. (Holly, MI), Titmuss; David F. (Commerce Township, MI), Parish; Harold (Shelby Township, MI), Campbell; John D. (Rochester Hills, MI)
GM Global Technology Operations LLC (Detroit, MI)
13/ 017,160
January 31, 2011
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with U.S. Government support under an Agreement/Project number: DE-EE0002629, awarded by the United States Department of Energy. The United States Government may have certain rights in this invention.