Patents by Inventor Paul Yu-Fei Hu

Paul Yu-Fei Hu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6088184
    Abstract: A magnetic recording apparatus and method for the azimuthal recording of data to and from data storage tracks contained on digital linear tape. The magnetic recording apparatus includes a magnetic data recording head assembly. A magnetic recording head is centrally located within the magnetic data recording head assembly. The magnetic data recording head assembly includes a control device coupled to a left servo sensor, wherein the left sensor is located to the left of and external to the magnetic recording head. The magnetic recording apparatus additionally includes a control device coupled to a right servo sensor, wherein the right servo sensor is located to the right of and external to the magnetic recording head.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: July 11, 2000
    Assignee: International Business Machines Corporation
    Inventor: Paul Yu-Fei Hu
  • Patent number: 6082844
    Abstract: Disclosed is a mounting structure for mounting a horizontal insertion loading data storage drive in a data storage library having downwardly inclined shelves. A bracket mounts the data storage drive, and support bars are mounted in parallel in the data storage library and support the bracket on each side at a downwardly inclined angle. Thus, the horizontal insertion loading data storage drive is mounted at the downwardly inclined angle to receive data storage media from a robot accessor at the angle of the downwardly inclined shelves. The mounting structure support bars are parallel slides which slidably support the bracket at the downwardly inclined angle. A ratchet bar is mounted in the library at the downwardly inclined angle, and has a plurality of ratchet holes in the downwardly inclined direction. A latch is mounted on the bracket for engaging the ratchet holes of the ratchet bar to support the bracket and data storage drive against sliding on the support bar slides.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: July 4, 2000
    Assignee: International Business Machines Corporation
    Inventors: Hartmut Ernst Hausler, Paul Yu-Fei Hu, Kevin Keith Kartchner, Steve John Roffinoli
  • Patent number: 5961343
    Abstract: Disclosed is a strain relief clamp for supporting one or more flexible ribbon cables. A first stiff member has an indentation wider than a flexible ribbon cable, and a height less than the thickness of a flexible ribbon cable. Stacked pliant members are stacked on the first stiff member. Each pliant member has an indentation on the side facing away from the first stiff member. The indentations are substantially equal in width and height to the indentation of the first stiff member. A second stiff member is located on the end of the stack opposite the first stiff member and has a protrusion at least as wide as a flexible ribbon cable facing the indentation of the adjacent pliant member. The protrusion height is such that the sum of its height and the thicknesses of the flexible ribbon cables is greater than the sum of the heights of the indentations of the first stiff member and of the stacked pliant members.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: October 5, 1999
    Assignee: International Business Machines
    Inventors: Paul Yu-Fei Hu, Rudolph Manuel Lopez
  • Patent number: 5901048
    Abstract: The invention relates to a printed circuit board having chips attached to the PCB. One or more of the chips has a planar collar mounted around the chip. The collar has a top and bottom planar surface without any projections. The collar extends laterally away from the edge of the chip to protect the leads electrically connecting the chip to the circuit board.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: May 4, 1999
    Assignee: International Business Machines Corporation
    Inventor: Paul Yu-Fei Hu
  • Patent number: 5659440
    Abstract: A cartridge magazine with interfaces to automatic cartridge feeder devices. On one side, the magazine has an open interface that provides unencumbered access by a robotic picker that accesses cartridges for a library. The magazine is accessible on another side by a transport mechanism of an automatic cartridge feeder (ACF). The transport carries a cartridge from the magazine to a drive unit where the data stored on the cartridge is read or new data is written. The interface to the ACF includes a handle member for placing the magazine into the feeder. The magazine is mounted by loading it into the feeder and pushing the handle inward allowing a plunger on the ACF to engage a groove on the handle member that locks the magazine into place. Locking the magazine in place activates a sensor, thereby enabling the operation of the feeder. The interface securely engages the ACF so that the magazine cannot be accidentally dislodged from it.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: August 19, 1997
    Assignee: International Business Machines Corporation
    Inventors: Donald Charles Acosta, David Conrad Graves, Paul Yu-Fei Hu, James Alfred Jackmond, Loyal Keith Whitted