Patent ID: 6877526

Claim:
A magnetic actuator assembly comprising: a spool surrounded by a coil; a primary plate disposed at a first end of said spool; a secondary plate disposed at a second end opposite said first end; a plunger slidably disposed within respective annular portions defined by said spool and said secondary plate and surrounded by said coil energizable to urge said plunger toward said primary plate; a first spring biasing a ball against a supply valve seat configured in one of said primary plate and a valve seat assembly, a non-magnetic rod having a first portion in operable communication with said plunger and a second portion in contact with said ball opposite said first spring, wherein said rod is stepped and defined by a shoulder defining an interface between said first and second portions said rod, said second portion configured to be translatable within a bore while allowing fluid communication between said supply valve seat and an exhaust valve seat, said first portion configured to seal said exhaust valve seat when said shoulder abuts said exhaust valve seat, and wherein said first portion of said rod is detachably coupled to said plunger via a cavity configured in said plunger, said cavity allowing said first portion of said rod to float therein to allow said second portion of said rod to align with at least one of said bore and said supply valve seat; and a second spring biasing said plunger and rod toward said exhaust valve seat configured in said one of said primary plate and said valve seat assembly opposite said supply valve seat, wherein said supply valve seat and said exhaust valve seat are in fluid communication with each other via said bore in said one of said primary plate and said valve seat assembly connecting said supply valve seat and said exhaust valve seat, said bore having a control port intermediate said supply valve seat and said exhaust valve seat.