Bradley D Bryant

US Patent:

20100127592, May 27, 2010

Filed:

Nov 25, 2008

Appl. No.:

12/277413

Inventors:

Johnny D. Yu - Centerville OH, US
Joseph A. Zahora - Kettering OH, US
Bradley S. Bryant - Xenia OH, US

Assignee:

Dayton-Phoenix Group, Inc. - Dayton OH

International Classification:

H02K 3/493

US Classification:

310214

Abstract:

A dynamoelectric-machine stator includes a stator lamination stack, a plurality of electrically-conductive magnetic wedges, a plurality of electrically-insulative nonmagnetic wedges, and coil windings. The stator lamination stack has circumferentially-spaced-apart stator teeth. Adjacent stator teeth each have a tooth side bounding an intervening stator slot. Adjacent stator teeth each have a radially-outermost tooth tip which circumferentially projects from the corresponding tooth side into the intervening stator slot to partially close the intervening stator slot. The coil windings are randomly wound in the stator slots. The magnetic wedges are each positioned in a corresponding stator slot and physically and solid-magnetically contact the corresponding tooth tips to fully close the corresponding stator slot proximate the corresponding tooth tips. The nonmagnetic wedges are each positioned in a corresponding stator slot between the corresponding coil windings and the corresponding magnetic wedge. A stator-slot magnetic wedge of particular shape is also described.

US Patent:

8575796, Nov 5, 2013

Filed:

Feb 26, 2010

Appl. No.:

12/713957

Inventors:

Joseph A. Zahora - Oakwood OH, US
Johnny D. Yu - Centerville OH, US
Bradley S. Bryant - Xenia OH, US

Assignee:

Dayton-Phoenix Group, Inc. - Dayton OH

International Classification:

H02K 1/04
H02K 15/12

US Classification:

310 45, 310 43, 310214, 310215

Abstract:

A heavy-duty stator core and coil assembly that can accommodate severe input voltage spiking and harmonics may include a coat of varnish applied to the stator core and coil assembly by steps of dipping the stator core and coil assembly end-first along a longitudinal axis into a first tank of liquid epoxy resin having a relatively low viscosity, baking the coating, inverting the stator core and coil assembly and applying a second coat of varnish in the same manner, then dipping the core and coil assembly into a second tank having a liquid epoxy resin of a relatively high viscosity, then baking the second coat.