Modular structural disc drive assembly

Abstract From the Canadian patent

A modular rotary disc drive or disc file having three major subassemblies. These are a rotary actuator structure subassembly having an actuator housing and a pivotally mounted actuator member in said housing an arm-, stack subassembly including the transducer heads and their electric circuits including the plug terminal therefor and, a magnetic driver subassembly having a magnetic housing and a movable coil assembly. The armstack subassembly is attached and removed from the actuator member without removing the actuator member from the actuator housing. The magnetic housing of the magnetic driver subassembly is secured to the actuator housing and its moving coil assembly is secured to the …