公开(公告)号：CH621645A5

公开(公告)日：1981-02-13

申请号：CH1219577

申请日：1977-10-06

Applicant: IBM

Inventor： COX ALLEN RONALD ,  HATCHETT MICHAEL ROBERT ,  RIGBEY LEONARD JOHN

IPC: G11B25/04 ,  G11B17/32

公开(公告)号：DE2840500A1

公开(公告)日：1979-04-12

申请号：DE2840500

申请日：1978-09-18

Applicant: IBM

Inventor： RIGBEY LEONARD JOHN ,  PASCUAL RAFAEL ,  COX ALLEN RONALD

IPC: G11B5/60 ,  G11B17/32 ,  G11B21/16 ,  G11B5/22

Abstract: In a recorder having a transducer with a gap which coacts with a flexible medium to record and/or reproduce data, an endless groove is positioned on the transducer to circumscribe the gap.

公开(公告)号：DE2735317A1

公开(公告)日：1978-04-06

申请号：DE2735317

申请日：1977-08-05

Applicant: IBM

Inventor： HATCHETT MICHAEL ROBERT ,  RIGBEY LEONARD JOHN

IPC: G11B23/033 ,  G11B17/32 ,  G11B25/04 ,  G11B5/016

公开(公告)号：FI761760A

公开(公告)日：1976-12-21

申请号：FI761760

申请日：1976-06-17

Applicant: IBM

Inventor： RIGBEY LEONARD JOHN ,  WALLIS CHRISTOPHER NORMAN

IPC: G11B21/02 ,  G11B5/55 ,  G11B21/24 ,  G11B

公开(公告)号：NO150099B

公开(公告)日：1984-05-07

申请号：NO773305

申请日：1977-09-27

Applicant: IBM

Inventor： HATCHETT MICHAEL ROBERT ,  RIGBEY LEONARD JOHN

IPC: G11B23/033 ,  G11B17/32 ,  G11B25/04 ,  G11B5/016

公开(公告)号：FI62428B

公开(公告)日：1982-08-31

申请号：FI44772

申请日：1972-02-18

Applicant: IBM

Inventor： CUZNER DAVID EVERARD ,  DODMAN CHARLES OWEN REARDON ,  HEATH JOHN STEWARD ,  RIGBEY LEONARD JOHN ,  CROUCH HOWARD STANLEY ,  GEORGE IAN CHARLES

IPC: G11B5/48 ,  G11B5/55 ,  G11B17/028 ,  G11B23/02 ,  G11B23/50 ,  H02K41/035 ,  G11B25/04 ,  G11B21/08

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.

公开(公告)号：AU3133177A

公开(公告)日：1979-06-14

申请号：AU3133177

申请日：1977-12-07

Applicant: IBM

Inventor： COX ALLEN RONALD ,  HATCHETT MICHAEL ROBERT ,  RIGBEY LEONARD JOHN

IPC: G11B25/04 ,  G11B17/32 ,  G11B3/60 ,  G11B19/20

公开(公告)号：NO774300L

公开(公告)日：1978-06-16

申请号：NO774300

申请日：1977-12-14

Applicant: IBM

Inventor： COX ALLEN RONALD ,  HATCHETT MICHAEL ROBERT ,  RIGBEY LEONARD JOHN

IPC: G11B25/04 ,  G11B17/32 ,  G11B

公开(公告)号：CH600476A5

公开(公告)日：1978-06-15

申请号：CH543876

申请日：1976-04-30

Applicant: IBM

Inventor： RIGBEY LEONARD JOHN ,  WALLIS CHRISTOPHER NORMAN

IPC: G11B21/02 ,  G11B5/55 ,  G11B21/24 ,  G11B17/06

公开(公告)号：AU1510776A

公开(公告)日：1978-01-05

申请号：AU1510776

申请日：1976-06-21

Applicant: IBM

Inventor： RIGBEY LEONARD JOHN ,  WALLIS CHRISTOPHER NORMAN

IPC: G11B21/02 ,  G11B5/55 ,  G11B21/24 ,  G11B21/10