公开(公告)号：US2924201A

公开(公告)日：1960-02-09

申请号：US69467757

申请日：1957-11-05

Applicant: IBM

Inventor： GILOVICH PAUL A

IPC: F15B11/12 ,  F15B15/12

CPC classification number: F15B11/121 ,  F15B15/12

公开(公告)号：US2974492A

公开(公告)日：1961-03-14

申请号：US74821358

申请日：1958-07-14

Applicant: IBM

Inventor： GILOVICH PAUL A

IPC: F15B7/00 ,  F15B7/08 ,  F15B11/12 ,  H04L17/28

CPC classification number: H04L17/28 ,  F15B7/005 ,  F15B7/08 ,  F15B11/125

公开(公告)号：US3882541A

公开(公告)日：1975-05-06

申请号：US43645474

申请日：1974-01-25

Applicant: IBM

Inventor： GHOSE SANJOY ,  GILOVICH PAUL A

IPC: G11B21/02 ,  G11B5/54 ,  G11B5/55 ,  H04N5/781 ,  G11B5/52

CPC classification number: G11B5/54 ,  G11B5/5547

Abstract: A system for recording and reproducing data streams in continuous or segmented form on a rotating buffer memory comprises a pair of head accessing mechanisms that are alternately shifted from track to track in synchronism with the rotation of the disk, such that one head is always available for data transfer. The mechanism provides high speed, but stable, shifting between tracks, by a cam arrangement driven by a stepping motor and in turn controlling the head accessing mechanism. The cam comprises a low mass, low inertia disk having a peripheral cam surface with a periodic progression of alternating dwell and ramp portions spaced in accordance with the stepping motor increments. Flexural members urge support devices for the head mechanisms in a direction to maintain cam followers in engagement with the cam surface and insure precise head positioning while filtering out vibrations and eliminating resonances induced by the stepping motor and associated system.

公开(公告)号：US2873725A

公开(公告)日：1959-02-17

申请号：US73390258

申请日：1958-05-08

Applicant: IBM

Inventor： GILOVICH PAUL A

IPC: F15B11/12 ,  F15B15/12

CPC classification number: F15B15/12 ,  F15B11/121

公开(公告)号：CA904660A

公开(公告)日：1972-07-11

申请号：CA904660D

Applicant: IBM

Inventor： GILOVICH PAUL A ,  NASSIMBENE ERNIE G ,  PRICE GEORGE E ,  O'ROURKE THOMAS F ,  JOHNSON REYNOLD B ,  MCMURTRY DAVID H ,  LONG EDWARD E

IPC: B41J2/50 ,  B41J5/00

公开(公告)号：CA1189967A

公开(公告)日：1985-07-02

申请号：CA379178

申请日：1981-06-05

Applicant: IBM

Inventor： MCMURTRY DAVID H ,  CRAWFORD ROY P ,  GILOVICH PAUL A

IPC: G11B15/67 ,  G11B15/32

Abstract: A method and apparatus is disclosed for automatically threading web material, e.g., magnetic tape, from a replacable supply reel to a non-replacable take-up reel of a web transport device, e.g., a reel-to-reel type magnetic tape drive, in which the web path is nonlinear and relatively complex as a result of various components, e.g., magnetic transducer tape guides, which act on the web while it is being transported. The apparatus comprises a coupling device and a mechanism for moving and guiding the coupling device between the supply reel and the take-up reel. The coupling device couples to a leader block attached to the tape at the supply reel. The mechanism moves and guides the coupling device to thread the tape over the predefined tape path and positions the leader block wholly within a radially disposed slot in the hub of the take-up reel. The coupling device remains attached to the moving mechanism and coupled to the leader block when the leader block is rotated with the take-up reel. The method is characterized by the steps of maintaining the relationship of the coupling device to the leader block and to the moving and guiding means during rotation of the take-up reel when the leader block is positioned in the radially disposed slot of the take-up reel.

公开(公告)号：CA1055154A

公开(公告)日：1979-05-22

申请号：CA214235

申请日：1974-11-20

Applicant: IBM

Inventor： GHOSE SANJOY ,  GILOVICH PAUL A

IPC: G11B21/02 ,  G11B5/54 ,  G11B5/55 ,  H04N5/781 ,  G11B5/52

Abstract: ROTATING MEMORY ACCESSING MECHANISM A system for recording and reproducing data streams in continuous or segmented form on a rotating buffer memory comprises a pair of head accessing mechanisms that are alternately shifted from track to track in synchronism with the rotation of the disk, such that one head is always available for data transfer. The mechanism provides high speed, but stable, shifting between tracks, by a cam arrangement driven by a stepping motor and in turn controlling the head accessing mechanism. The cam comprises a low mass, low inertia disk having a peripheral cam surface with a periodic progression of alternating dwell and ramp portions spaced in accordance with the stepping motor increments. Flexural members urge support devices for the head mechanisms in a direction to maintain cam followers in engagement with the cam surface and insure precise head positioning while filtering out vibrations and eliminating resonances induced by the stepping motor and associated system.