公开(公告)号：FR2306503A1

公开(公告)日：1976-10-29

申请号：FR7605920

申请日：1976-02-25

Applicant: IBM

Inventor： BOLTON IVOR W ,  GEORGE IAN C

IPC: G11B25/04 ,  G11B33/14 ,  G11C5/00

Abstract: A gas filtering arrangement is described for a magnetic disk file consisting of a closed housing surrounding the magnetic disks. A bearing mounted in a wall of the housing carries a drive shaft upon which the disk (or disks) and a gas impeller are mounted. The impeller pumps gas through a main filter, located within the housing, to clean the gas. The air flow due to the impeller and the disk is arranged to maintain a positive air pressure adjacent the bearing to prevent gas entering the housing through the bearing. A breather filter within the housing connected to the exterior of the housing by a breather aperture is arranged so that during operation a negative pressure is applied to the breather filter to prevent gas leaving the housing through the breather filter.

公开(公告)号：CA1012640A

公开(公告)日：1977-06-21

申请号：CA136741

申请日：1972-03-09

Applicant: IBM

Inventor： CUZNER DAVID E ,  DODMAN CHARLES O R ,  HEATH JOHN S ,  RIGBEY LEONARD J ,  CROUCH HOWARD S ,  GEORGE IAN C

IPC: G11B5/48 ,  G11B5/55 ,  G11B17/028 ,  G11B23/02 ,  G11B23/50 ,  H02K41/035

Abstract: A magnetic disc apparatus including a sealed module which encloses magnetic discs, magnetic heads attached to head arm assemblies, an electromagnetic actuator for positioning the magnetic heads on the head arm assemblies, and a drive spindle on which the discs are seated. All control of the positioning of the head arm assembly, the operation of the electromagnetic actuator and the read write function being provided by electrical signals communicated between the file housing and the sealed module. A drive motor within the file housing is coupled to the enclosed spindle, which extends from the module while maintaining the module seal, for providing only rotary motion to the discs attached to the spindle.