a planar overrunning coupling assembly for a geared transmission . the coupling assembly has a circular pocket plate , a notch plate , and torque transmitting struts in pockets formed in the pocket plate . the geometry of the pockets prevents displacement of the struts toward the notch plate under the influence of centrifugal force when the pocket plate overruns the notch plate . the pocket plate and the notch plate define in part friction disc coupling assemblies .