Patent ID: 8602189

Claim:
A coupling member for an engageable coupling assembly, the coupling member being formed as a unitary die-casting from a die-casting alloy strengthened by an alloying material in a die casting process, the coupling member comprising: a coupling face having a pocket which is sized and shaped to receive and nominally retain a locking member that moves in the pocket during an overrun condition of the assembly; a relatively hard base portion including particles of the strengthening alloying material of the die-casting alloy; and a plurality of surface portions which define the pocket wherein at least one generally vertical surface portion of the surface portions is soft relative to the hard base portion and is substantially devoid of the particles of the alloying material so that the at least one generally vertical surface portion wears or deforms during contact of the locking member against the at least one generally vertical surface portion during the overrun condition.