Patents Assigned to Nomai S.A.
  • Hard disk platter assembly with plastic hub for use in a removable cartridge
    Patent number: 6333833
    Abstract: A hard disk assembly comprises a hub made of injection molded liquid crystal plastic, to which is mounted a magnetic disk by a twist-lock screw top. The expensive step of machining the critical hub component is avoided because sufficient accuracies can be achieved with the liquid crystal plastic when injection molded.
    Type: Grant
    Filed: July 14, 1994
    Date of Patent: December 25, 2001
    Assignee: Nomai S.A.
    Inventors: Jacques Bordes, Marc Frouin
  • Magneto-resistive removable hard disk cartridge and disk drive and quadrature embedded servo bursts
    Patent number: 6301087
    Abstract: A disk drive comprises a magneto-resistive read head and an inductive write head for use with removable hard disk cartridges. A four-burst embedded servo is written and read to guide the servo-positioning of the magneto-resistive read head over data tracks recorded on the removable hard disk.
    Type: Grant
    Filed: July 14, 1994
    Date of Patent: October 9, 2001
    Assignee: Nomai S.A.
    Inventor: Anthony David Combe
  • Hard disk recording platter with injection-molded liquid-crystal-plastic hub
    Patent number: 5805379
    Abstract: A cartridge disk that includes a door assembly mounted in a combination base and cover shell. The door assembly mounted in a combination base and cover shell. The door assembly has a single lever that opens both doors at once to allow for mounting of the cartridge disk to a drive. The cartridge disk includes a plastic hub and an aluminum disk.
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: September 8, 1998
    Assignee: Nomai S.A.
    Inventor: Jacques Bordes