Patents Represented by Attorney, Agent or Law Firm Steven G. Roeder
  • Patent number: 6424499
    Abstract: A flexible multi-channel trace interconnect array has a head end for electrically connecting write and read trace pairs respectively to write and read elements of a data transducer head, a body formed of a flexible dielectric material and carrying the write and read trace pairs, and at least one circuit end for connecting the write and read trace pairs respectively to write driver and read preamplifier circuits of a data storage device. Each trace pair includes two trace conductors each having a trace width, and an inter-conductor separation space. Adjacent trace pairs are separated by an inter-pair space having a width greater than, and preferably two to twenty times greater than the inter-conductor separation space in order to decouple adjacent channel pairs.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: July 23, 2002
    Assignee: Quantum Corporation
    Inventors: Arun Balakrishnan, Gregory P. Hertrich, Mark Sheppard, Doug Gunther
  • Patent number: 6424485
    Abstract: A method for improving disk drive performance by adaptively calculating skew values for each drive. During a production phase of the disk drive manufacturing process, skew values are calculated using measured seek times, then implemented to each drive. The calculation scheme permits slipped revolutions to occur during a percentage of the time so that skew values are not so high as to hinder high performance.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: July 23, 2002
    Assignee: Maxtor Corporation
    Inventors: Yoko Enokida, Richard D. Pitzer, Karman Tam
  • Patent number: 6417997
    Abstract: Mechanically formed standoffs in a disk drive integrated circuit interconnect reduces the cost of manufacturing and improves the reliability of the electrical interconnections thereof. Connection pads defined along the interconnect are bonded with bonding pads of a signal producing source and a signal processing source. The standoffs provide mechanical stops during the bonding process, enabling sufficient bonding material to form between bonding areas. The standoffs are mechanically formed with a punch and die assembly either directly through a bonding pad predefined along traces on the interconnect or adjacent the bonding pad. The standoffs formed through the bonding pads are covered with solder or other electrically conductive bonding material.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: July 9, 2002
    Inventor: Stephen P. Williams
  • Patent number: 6408767
    Abstract: A suspension system (18) for suspending a stage (14) spaced apart from a stage base (12) is provided herein. The suspension system (18) includes a plurality of spaced apart suspension assemblies (20). Each suspension assembly (20) includes a fluid pad (22) and an adaptable section (24). A bearing fluid (48) is directed from the fluid pad (22) to create a fluid bearing (52) between the fluid pad (22) and the stage base (12). The fluid bearing (52) allows for large displacement, frictionless motion along an X axis, along a Y axis and rotation about a Z axis. The adaptable section (24) secures the fluid pad (22) to the stage (14). The adaptable section (24) allows for relative movement between the fluid pad (22) and the stage (14). More specifically, the adaptable section (24) allows for small displacement, low stiffness motion along the Z axis and rotation about the X axis and the Y axis.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: June 25, 2002
    Assignee: Nikon Corporation
    Inventors: Mike Binnard, Douglas C. Watson
  • Patent number: 6405659
    Abstract: A stage assembly (10) for moving and positioning one or more objects (24) for an exposure apparatus (28) is provided herein. The stage assembly (10) includes a mounting frame (14) and a stage frame (16). The stage frame (16) includes a holder (50) that retains the object (24). The stage assembly (10) also includes X movers (58A) (58B), Y movers (60A) (60B) and Z movers (62A) (62B) that precisely move the stage frame (16) relative to the mounting frame (16). Uniquely, the stage frame (16) is monolithic. With this design, the resulting stage frame (16) is rigid and has a relatively high servo bandwidth. Further, the movers (58A) (58B) (60A) (60B) (62A) (62B) are positioned to act through a center of gravity (51) of the stage frame (16).
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: June 18, 2002
    Assignee: Nikon Corporation
    Inventor: Andrew J. Hazelton
  • Patent number: 6398143
    Abstract: A tape drive (10) that includes a cartridge receiver (18), a take-up reel (16) and a drive leader (32) is adapted for use with a cartridge (22) that includes a cartridge leader (28) having a cartridge buckle component (56). The drive leader (32) includes a drive buckle component (54) that engages the cartridge buckle component (56) to couple the drive leader (32) to the cartridge leader (28). The drive leader (32) includes a leader connector (88) having a connector aperture (102). The take-up reel (16) includes a hub (120) that receives the drive leader (32). Uniquely, the hub (120) including a drive component channel (146) that is sized and shaped to receive the drive buckle component (54). Preferably, the hub (120) also includes a cartridge component channel (148) that is sized and shaped to receive the cartridge buckle component (56) and a pair of member channels (150) (152) for receiving the leader connector (88).
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: June 4, 2002
    Assignee: Quantum Corporation
    Inventors: Chan Kim, Roy MacKinnon, George Saliba
  • Patent number: 6375108
    Abstract: A tape drive (10) adapted for use with a cartridge (22) that includes a storage tape (26) having a cartridge buckle component (56). The tape drive (10) includes a cartridge receiver (18), a take-up reel (16), a drive buckle component (54), and a drive leader (32). The drive buckle component (54) engages the cartridge buckle component (56). The drive leader (32) secures the drive buckle component (54) to the take-up reel (16). Importantly, the drive leader (32) includes a first layer (94), a second layer (96) and a third layer (98) that are secured together. Further, the second layer (96) includes a plurality of interwoven strands (102). The drive leader (32) has improved flexibility characteristics. As a result thereof, the drive leader (32) is better able to flex to conform to the tape path. This reduces the amount of wear between the drive leader (32) and the components along the tape path and reduces the amount of contamination created by the drive leader (32).
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: April 23, 2002
    Assignee: Quantum Corporation
    Inventors: Tom Drechsler, Richard McGrail, Frank Osowski
  • Patent number: 6369982
    Abstract: A floating head for magnetic tape includes a longitudinal raised mesa and side wings and has a mesa major dimension less than a width of the tape without outriggers and employs a minimized tape wrap angle. The head may be rotated between operating positions for longitudinal track patterns and azimuthal track patterns. In one preferred form, the head is employed as a read-only head within a secondary head positioning mechanism included for backward compatibility within a high track density tape unit for reading longitudinal and azimuth track patterns recorded in accordance with earlier tape track standards.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: April 9, 2002
    Assignee: Quantum Corporation
    Inventor: George A. Saliba
  • Patent number: 6349020
    Abstract: A magnetic tape head tilting mechanism for adjusting the zenith of the magnetic head. The zenith adjustment mechanism eliminates the cumulative tolerances inherent in the components of mechanisms of prior art. The zenith adjustment mechanism utilizes a single adjustment screw to align the magnetic head such that the face is in parallel alignment relative to the tape path, along the transverse direction.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: February 19, 2002
    Assignee: Quantum Corporation
    Inventor: Kumaraswamy Kasetty
  • Patent number: 6344944
    Abstract: A tape mini-cartridge is functionally compatible with a larger industry standard tape cartridge. A mini-cartridge adapter adapts the mini-cartridge to be compatible with a standard tape drive by presenting the standard structural and functional appearances to the tape drive as presented by the larger standard tape cartridge. Since the standard cartridge has a plurality of structural elements including reel locks, leader buckle guide, and write protect flag engaged by the standard drive, the cartridge adapter effectively transfers these engagements and forces to and from the mini-cartridge in a manner providing full structural interchangeability with the standard tape cartridge.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: February 5, 2002
    Assignee: Quantum Corporation
    Inventors: Joe Stabile, Larry Albrecht, Rich Hayes, Joseph Kozak
  • Patent number: 6331920
    Abstract: A tape recording and playback unit records and reads back data from tape either in a high track density standard format or alternatively reads back data from a tape previously recorded on another unit in accordance with a previous low density standard track format. The unit includes a primary head positioning mechanism for positioning a primary multi-channel write/read head and a secondary head positioning mechanism for positioning a secondary read-only head. The secondary head may be positioned angularly to read longitudinal and azimuth track patterns, and also to be retracted when not needed.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: December 18, 2001
    Assignee: Quantum Corporation
    Inventors: Laurence J. Albrecht, George A. Saliba
  • Patent number: 6323567
    Abstract: A circulating system (10) for cooling a shaft-type linear motor (12) is provided herein. The motor (12) includes a magnet array (22) and a coil assembly (16). The circulating system (10) includes coil housing (36) that encircles the coil assembly (16) and defines a fluid passageway (46) between the coil housing (36) and the coil assembly (16). Fluid (44) from a fluid source (42) is forced through an inlet (38) into the fluid passageway (46). The flow rate of the fluid (44) is controlled to maintain an outer surface (111) of the coil housing (36) at a set temperature to control the effect of the motor (12) on the surrounding environment and the surrounding components.
    Type: Grant
    Filed: December 24, 1999
    Date of Patent: November 27, 2001
    Assignee: Nikon Corporation
    Inventors: Andrew J. Hazelton, Kazuya Ono
  • Patent number: 6319284
    Abstract: A toe implant (10) for a first metatarsal phalangeal joint (22) between a metatarsal (24) and a proximal phalanx (26) of a great toe (12) includes a proximal stem (16), a distal stem (18) and a hinge (20) and a strength rib (92). Importantly, the toe implant (10) is designed to accommodate an axis of motion in a unique location (82) and the distal stem (18) is naturally positioned lower than the proximal stem (16). Further, the toe implant (10) provides a relatively good available range of motion. With this design, the toe implant (10) maintains the proximal phalanx (26) in the correct anatomic position relative to the metatarsal (24) during bending and flexing. Additionally, the toe implant (10) allows the toe (12) to move in a fashion that simulates the natural motion of the first metatarsal phalangeal joint (22). As a result thereof, the toe implant (10) that does not significantly increase the stress at the joint (22) or alter the normal flexing of the toe (12).
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: November 20, 2001
    Assignee: Futura Biomedical LLC
    Inventors: Jamal Rushdy, Bruce R. Lawrence
  • Patent number: 6313551
    Abstract: A magnet array (20) for a shaft type linear motor (10) is provided herein. In one embodiment, the magnet array (20) includes a plurality of magnetic, axial sections (40) and a plurality of magnetic, transverse sections (42) positioned along an array axis (34) of the magnet array (20). Each axial section (40) has an axial polarization (52) relative to the array axis (34) and each transverse section (42) has transverse polarization (54) relative to the array axis (34). The resulting magnet array (20) has improved flux density for a given mass. In another embodiment, each magnetic section (36) of the magnet array (20) includes a first channel (60) and a second channel (62) that extends inward from the sides (44,46) of each section (36). The resulting magnet array (20) has a reduced mass for a given flux density. Importantly, for each embodiment, the magnet array (20) has an improved ratio of flux density to magnet mass. This allows the magnet array (20) and the motor (10) to be more efficient.
    Type: Grant
    Filed: February 4, 2000
    Date of Patent: November 6, 2001
    Assignee: Nikon Corporation
    Inventor: Andrew J. Hazelton
  • Patent number: 6313550
    Abstract: A coil assembly (14) used with a magnet assembly (12) for a linear or planar electric motor (10) is provided herein. The coil assembly (14) includes a plurality of coils (18) attached to a coil base (16) with a plurality of coil supports (22). The coil supports (22) secure the coils (18) to the coil base (16) with the coils (18) spaced apart from a first surface (23) of the coil base (16). As a result thereof, both sides (32), (34) of each coil (18) are exposed for cooling. Further, the coil supports (22) allow the coils (18) to expand laterally with minimal stress and thermal deformation. The coil assembly (14) can also include a plurality of spaced apart covers (62). Each cover (62) fits over one of the coils (18) and is secured to the coil base (16). A fluid (24) can be directed into a fluid passageway (58) around each coil (18) to cool each coil (18).
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: November 6, 2001
    Assignee: Nikon Corporation
    Inventors: Mike Binnard, Andrew J. Hazelton
  • Patent number: 6311915
    Abstract: An improved tape drive (10) includes a cartridge receiver (18) and a buckler (20). The cartridge receiver (18) receives a cartridge (22) having a cartridge leader (28). The buckler (20) selectively retains a drive leader (32) of the tape drive (10). The tape drive (10) and cartridge (22) include a buckle (30) that securely couples the drive leader (32) of the tape drive (10) to the cartridge leader (28) of the cartridge (22). The buckler (20) includes one or more buckler retainers (96) and a deflector (121). The buckler retainers (96) selectively engage the drive leader (32) and move the drive leader (32) relative to the cartridge leader (28) to couple the drive leader (32) to the cartridge leader (28). The deflector (121) selectively deflects a portion of the drive leader (32) during buckling to enhance the reliability of buckling with certain types of cartridges (22).
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: November 6, 2001
    Assignee: Quantum Corporation
    Inventor: Christopher Rathweg
  • Patent number: 6307718
    Abstract: A magnetic tape head tilting mechanism for tilting the magnetic head to a desired azimuth angle. The azimuth tilting mechanism uses a worm gear and worm, driven by a stepper motor, which automatically adjusts the position of the magnetic head during recording of the signal onto the tape by the write head gap to maintain the strongest signal that is received by the read head gap. The fine angular resolution enables writing very high track densities and providing strong read signals.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: October 23, 2001
    Assignee: Quantum Corporation
    Inventor: Kumaraswamy Kasetty
  • Patent number: 6297928
    Abstract: A mounting assembly for securing a disk drive to a frame of a computer is provided herein. The mounting assembly includes three rigid mounts and a single flexible mount. Each rigid mount rigidly secures the drive housing to the frame and prevents degradation of performance of the disk drive. The flexible mount diminishes the level of vibration transferred from the frame to drive housing. Further, the flexible mount facilitates flexing of the drive housing intermediate the flexible mount and the rigid mounts. This reduces the effects of a shock pulse to the disk drive and inhibits head slap between a transducer head and a storage disk.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: October 2, 2001
    Assignee: Maxtor Corporation
    Inventors: Peter Hahn, Arthur Lin, Shin John Choi, Rodney Ngai
  • Patent number: 6289833
    Abstract: A device (10) for moving an individual (12) over a surface (14) with the assistance of wind (16) is provided herein. The device (10) includes a support section (18), and a sail section (20) which is pivotally fixed to the support section (18). The sail section (20) catches wind (16) to move the support section (18) and the individual (12) relative to the surface (14) The sections (18, 20) are made from a resiliently deformable material, and may be inflatable, non-inflatable, or a combination of both. The device (10) can also include one or more rudders (66) secured to the support section (18) for steering the device (10). Further, the device (10) can include one or more skegs (76) secured to the support section (18) to guide movement of the device (10). The sail section (20) preferably includes a sail controller (40) for directionally catching wind (16) to steer the device (10).
    Type: Grant
    Filed: October 26, 2000
    Date of Patent: September 18, 2001
    Inventor: Gerry Kirk
  • Patent number: 6288870
    Abstract: A self-aligned multi-channel tape head structure has a non-magnetic ceramic substrate defining an interior longitudinal channel and a plurality of head regions. At least one head leg at each region defines lateral openings to the interior longitudinal channel. Each head region has a thin-film metal magnetic core deposited on an inside wall surface of the ceramic substrate and a magnetic gap in a longitudinal face of the ceramic substrate. A coil of wire is wound around each head leg to provide a magnetic transducer head at each head region.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: September 11, 2001
    Assignee: Quantum Corporation
    Inventor: George A. Saliba