An improved rotary-type read-write head actuator assembly for use in a rotating disc data storage device is provided. The head actuator assembly includes an elongated actuator arm pivotally mounted at one end and having flexible read-write head support arms at the other end. The elongated actuator arm...http://www.google.fr/patents/US4751597?utm_source=gb-gplus-shareBrevet US4751597 - Center of percussion head actuator assembly