公开(公告)号：US3534380A

公开(公告)日：1970-10-13

申请号：US3534380D

申请日：1968-11-01

Applicant: IBM

Inventor： EAST DON G ,  HERMAN PHILIP A ,  KEKAS DENNIS H

IPC: G01R13/04 ,  G01R13/06 ,  G01R13/14

CPC classification number: G01R13/04

公开(公告)号：CA2097227A1

公开(公告)日：1993-12-23

申请号：CA2097227

申请日：1993-05-28

Applicant: IBM

Inventor： ALBRECHT THOMAS R ,  ARGUMEDO ARMANDO J ,  EATON JAMES H ,  EAST DON G ,  FELDE STEVEN L ,  JOHNSON DOUGLAS W

IPC: G11B23/037 ,  G11B23/08 ,  G11B23/087 ,  G11B33/14

Abstract: A tape reel brake (207) which is mounted in a well (215) in the top of a tape reel hub. The brake (207) is mounted to be compliantly biased away from the base of the well (215). The hub and brake (207) are seated in the tape cartridge (10) such that teeth (239) on the periphery of the brake (207) are biased against the opposite inside surface (14) of the cartridge housing about the periphery of an opening (20) therein. The biasing of the brake (207) against the opposite inside surface (14) both prevents the rotation of the reel (200) and shields out dust when the tape cartridge (10) is removed from a tape drive. To rotate the reel (200), a tape drive clutch enters the opening (20) in the opposite inside surface and depresses the brake (207) into the well (215) to mate with a smaller diameter portion (220) of the hub.

公开(公告)号：CA2062119C

公开(公告)日：1995-02-28

申请号：CA2062119

申请日：1992-03-02

Applicant: IBM

Inventor： COMEAUX WAYNE T ,  EAST DON G ,  FELDE STEVEN L ,  JOHNSON DOUGLAS W

IPC: G11B15/43 ,  G11B15/60 ,  G11B15/67 ,  G11B23/04 ,  G11B23/107

Abstract: The invention is a tape path having an implicit squeeze bearing. In such a tape path, one end of the tape is wound upon a first reel, the tape extends around one or more guides, briefly comes into close proximity with itself at the outer wrap of the tape wound upon the first reel, and is wound upon a second reel. By coming within close proximity with itself, the tape forms an implicit squeeze bearing which damps tape tension variation, inhibits the transmission of vibrations from one reel to the other, and eliminates the entrapment of entrained air without any additional rollers or other components. The tape path is suitable for use in a peripheral storage device, such as a magnetic tape drive, and is compatible with a variety of tape cartridge configurations.

公开(公告)号：CA2097228A1

公开(公告)日：1993-12-23

申请号：CA2097228

申请日：1993-05-28

Applicant: IBM

Inventor： EAST DON G ,  FELDE STEVEN L ,  HU PAUL Y ,  ROBLES GUILLERMO S

IPC: G11B15/675 ,  G11B23/087 ,  G11B5/00

Abstract: A tape cartridge (10) having a solid metal mount plate (12) including a plurality of surfaces (51, 52, 53) thereon simultaneously machined to the same plane. Tape reels (200, 300) and tape guides (105, 125) are affixed to the mount plate (12), thereby ensuring precise alignment to each other. A portion of at least one of the surfaces is exposed to the outside of the tape cartridge (10) by recesses (30, 31) in the tape cartridge cover. Upon seating the tape cartridge (10) in a tape drive, guides (105, 125) are inserted into the recesses, thereby ensuring precise alignment of tape wound upon the tape to a tape head in the tape drive.