公开(公告)号：FI59889B

公开(公告)日：1981-06-30

申请号：FI234174

申请日：1974-08-06

Applicant: IBM

Inventor： FRASER JR HARVEY REED ,  LARSON RICHARD THOR ,  RINKLEIB HELFRIED OTTO

IPC: B65H75/18 ,  F16L37/098 ,  G11B23/107 ,  G11B23/04

Abstract: A tape spool and cover are latched together by a tubular sleeve arrangement. A hollow core tape spool has an inner frustro-conical camming surface adjacent an axially outwardly facing shoulder. A releasable latch includes a unitary resilient sleeve inserted into the hollow core and is cammed radially inwardly for creating radial outward forces on the opposite sleeve end outside the spool. A first axial end portion of the sleeve has a first type locking resilient finger extending out of the hollow core and a second type resilient finger in locking engagement with the hollow core tape spool. A radially inwardly extending annular rib divides the first and second axial end portions to provide a bending moment transfer ring. The slots defining the axially extending fingers extend to and preferably into the rib for providing a moment bridge for transferring the radial inward compression on the second axial end portion to a radially outwardly exerting force in the first axial end portion. It is preferred that such slots terminate on or near a common circumferential line extending around the sleeve. The outer end portion of the first type of fingers includes a latching shoulder, plus a camming surface for enabling radial inward camming all first type fingers for enabling releasable engagement between the tape spool and a cylindrical cover.

公开(公告)号：FI62192C

公开(公告)日：1982-11-10

申请号：FI752718

申请日：1975-09-29

Applicant: IBM

Inventor： FOWLER THOMAS MARSHALL ,  FRASER JR HARVEY REED ,  HAUKE FRANCIS EDWARD

IPC: G11B21/04 ,  G11B5/52 ,  G11B15/61 ,  G11B15/64

Abstract: Various pneumatic means are shown for lifting tape locally away from a rotating head as the rotating head moves. Only the tape in the vicinity of the head is lifted. The lifting is done with minimal pneumatic force, and done only locally about the head so that recovery time for read/write operations after a lifting operation is short, Air to lift the tape can be blown from passages around the head, from passages through the head, or from passages in front of the head. Local lifting about the head is enhanced by insuring that the pneumatic air flow to lift the tape does not easily dissipate in air space between the mandrel and the head rotor.

公开(公告)号：FI62192B

公开(公告)日：1982-07-30

申请号：FI752718

申请日：1975-09-29

Applicant: IBM

Inventor： FOWLER THOMAS MARSHALL ,  FRASER JR HARVEY REED ,  HAUKE FRANCIS EDWARD

IPC: G11B21/04 ,  G11B5/52 ,  G11B15/61 ,  G11B15/64

Abstract: Various pneumatic means are shown for lifting tape locally away from a rotating head as the rotating head moves. Only the tape in the vicinity of the head is lifted. The lifting is done with minimal pneumatic force, and done only locally about the head so that recovery time for read/write operations after a lifting operation is short, Air to lift the tape can be blown from passages around the head, from passages through the head, or from passages in front of the head. Local lifting about the head is enhanced by insuring that the pneumatic air flow to lift the tape does not easily dissipate in air space between the mandrel and the head rotor.

公开(公告)号：FI59889C

公开(公告)日：1981-10-12

申请号：FI234174

申请日：1974-08-06

Applicant: IBM

Inventor： FRASER JR HARVEY REED ,  LARSON RICHARD THOR ,  RINKLEIB HELFRIED OTTO

IPC: B65H75/18 ,  F16L37/098 ,  G11B23/107 ,  G11B23/04

Abstract: A tape spool and cover are latched together by a tubular sleeve arrangement. A hollow core tape spool has an inner frustro-conical camming surface adjacent an axially outwardly facing shoulder. A releasable latch includes a unitary resilient sleeve inserted into the hollow core and is cammed radially inwardly for creating radial outward forces on the opposite sleeve end outside the spool. A first axial end portion of the sleeve has a first type locking resilient finger extending out of the hollow core and a second type resilient finger in locking engagement with the hollow core tape spool. A radially inwardly extending annular rib divides the first and second axial end portions to provide a bending moment transfer ring. The slots defining the axially extending fingers extend to and preferably into the rib for providing a moment bridge for transferring the radial inward compression on the second axial end portion to a radially outwardly exerting force in the first axial end portion. It is preferred that such slots terminate on or near a common circumferential line extending around the sleeve. The outer end portion of the first type of fingers includes a latching shoulder, plus a camming surface for enabling radial inward camming all first type fingers for enabling releasable engagement between the tape spool and a cylindrical cover.

公开(公告)号：FI752718A

公开(公告)日：1976-03-31

申请号：FI752718

申请日：1975-09-29

Applicant: IBM

Inventor： FOWLER THOMAS MARSHALL ,  FRASER JR HARVEY REED ,  HAUKE FRANCIS EDWARD

IPC: G11B21/04 ,  G11B5/52 ,  G11B15/61 ,  G11B15/64 ,  G11B

Abstract: Various pneumatic means are shown for lifting tape locally away from a rotating head as the rotating head moves. Only the tape in the vicinity of the head is lifted. The lifting is done with minimal pneumatic force, and done only locally about the head so that recovery time for read/write operations after a lifting operation is short, Air to lift the tape can be blown from passages around the head, from passages through the head, or from passages in front of the head. Local lifting about the head is enhanced by insuring that the pneumatic air flow to lift the tape does not easily dissipate in air space between the mandrel and the head rotor.