This wraps the ObjectARX AcDbAssocSweptSurfaceActionBody class.

Autodesk.AutoCAD.DatabaseServices.DBObject
    Autodesk.AutoCAD.DatabaseServices.AssocActionBody
        Autodesk.AutoCAD.DatabaseServices.AssocParamBasedActionBody
            Autodesk.AutoCAD.DatabaseServices.AssocSurfaceActionBody
                Autodesk.AutoCAD.DatabaseServices.AssocPathBasedSurfaceActionBody
                    Autodesk.AutoCAD.DatabaseServices.AssocSweptSurfaceActionBody

Public Class AssocSweptSurfaceActionBody
Inherits AssocPathBasedSurfaceActionBody

public class AssocSweptSurfaceActionBody : AssocPathBasedSurfaceActionBody;