Patents Examined by Carl E. Hall
  • Patent number: 6321442
    Abstract: A method, apparatus, and a disk file for adjusting the height of a set of load/unload lift cams with respect to the axial height of an associated stack of disks. The method steps comprise supporting load/unload lift cams with an adjustment tool, measuring the relative height of the load/unload lift cams with respect to the stack of disks in the axial direction with a non-contact transducer, and fixing the load/unload lift cams at a registered height with respect to the stack of disks.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: November 27, 2001
    Assignee: International Business Machines Corporation
    Inventors: James William Berberich, Neal Bertram Schirle
  • Patent number: 6321428
    Abstract: A method of forming an ultrasound transducer having thermoformed protuberances comprises providing a substrate having a plurality of perforations of a given dimension. The perforations or apertures are formed in the substrate and operate to determine the resonance frequency associated with the transducer. A film of polymeric material capable of showing piezoelectric properties when strained in its plane and electrically biassed by a field applied in a direction normal to its faces, is then laminated onto the substrate. The film is heated to a given temperature and a pressure differential is applied between the top and bottom surfaces of the film for a sufficient time to form protuberances in the film through the apertures in the substrate.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: November 27, 2001
    Assignee: Measurement Specialties, Inc.
    Inventors: Minoru Toda, Kyung-Tae Park, Jeffrey D. Swan
  • Patent number: 6321429
    Abstract: Method of manufacturing an enveloped multilayer capacitor and an enveloped multilayer comprising a method of manufacturing enveloped multilayer capacitors, in which a flat supporting plate of an electrically insulating material is provided with through-holes, dielectric layers and electrode layers are provided in the holes and on both surfaces of the flat supporting plate, after a sufficient number of layers has been provided for the intended purpose, the supporting plate is covered on both sides with a cover plate of an electrically insulating material which is hermetically secured to the supporting plate of an electrically insulating material, the assembly is subdivided into blocks which each comprise a multilayer capacitor enveloped by an electrically insulating material, with partition lines extending through the electrode layers situated on both surfaces of the supporting plate, and, subsequently, end contacts are provided on two opposing ends of the blocks.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: November 27, 2001
    Assignee: U.S. Philips Corporation
    Inventor: Johannus W. Weekamp
  • Patent number: 6317962
    Abstract: In a method for producing a stator of an alternating current dynamo-electric machine, a laminated assembly with a roughly rectangular parallelopiped shape is produced, and a stator coil assembly is disposed in slots of the laminated assembly. Thereafter, a cylindrical stator core is produced by bending the laminated assembly. The stator coil assembly can thereby be easily disposed in the slots at a higher density, and damage to the conductors of the stator coil assembly can be prevented.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: November 20, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Katsumi Adachi, Etsuji Yano, Kyoko Kurusu
  • Patent number: 6305071
    Abstract: This concerns a method and kit for converting a flat panel switch to a raised panel switch by mounting a rotary switch thereto. The flat panel switch has a carrier layer. A set of electrodes forming an electrical circuit is disposed on the carrier. The kit includes a rotor having a head mounted in a front cover. A stem attached to the head extends through the front cover for actuation by a user. An electrical contact member is connected to the head for movement therewith. The contact member is associated with the electrodes to alter the condition of the electrical circuit upon actuation of the rotor. The front cover has latches that extend through perforations in the carrier for engagement with a back cover. The latches lock the front and back cover in place on the carrier.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: October 23, 2001
    Assignee: Duraswitch Industries, Inc.
    Inventor: Anthony J. Van Zeeland
  • Patent number: 6305060
    Abstract: An acoustic array of independently sensitive detecting elements is produced by locating a pattern of electrodes on a piezoelectric polymer film. Sensitivity of the film and a spaced away supporting structure are used to reduce artifacts caused by acoustic reflection in the supporting structure.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: October 23, 2001
    Assignee: GE Lunar Corporation
    Inventor: Richard F. Morris
  • Patent number: 6305072
    Abstract: When manufacturing a thin film magnetic head in which an upper magnetic pole is formed on a lower magnetic pole through a magnetic gap, firstly, at least on the lower magnetic pole, a convex portion possessing the width equivalent to a track width is formed. The convex portion forms a lower magnetic pole tip. Conforming to a contour of the convex shape of the lower magnetic pole, a non-magnetic material layer is formed. A flattening layer is formed on the non-magnetic material layer. The non-magnetic layer is etched with the flattening layer, for example, as a mask. In the non-magnetic material layer, a concave portion self-aligned to the lower portion magnetic pole top (convex portion) is formed. Inside the concave portion, a magnetic layer (upper magnetic pole tip) destined to be a part of the upper magnetic pole is formed.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: October 23, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroaki Yoda, Susumu Hashimoto, Michiko Hara, Masashi Sahashi
  • Patent number: 6301773
    Abstract: A method for manufacturing a motor core having a plurality of metallic plate-like laminations includes the steps of a) juxtaposing the laminations in a stacked relation, b) placing the laminations over an alignment post of an alignment fixture, c) flowing at least one bead of hardenable adhesive material along the outer peripheral surface of the laminations where the adhesive material, when cured, fixes the laminations in a predetermined non-moving orientation, d) removing the laminations from the alignment fixture; and e) applying windings to the laminated stack.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: October 16, 2001
    Assignee: General Electric Company
    Inventor: Dilip V. Chemburkar
  • Patent number: 6298545
    Abstract: A system for positioning a transducing head in a disc drive device over a selected track of a rotatable disc includes an actuator arm which is rotatable about an axis, a head suspension mechanism connected to the actuator arm, and a slider carrying a transducing head and supported by the head suspension mechanism. A low resolution motor moves the actuator arm about the axis to effect coarse movement of the head between tracks of the disc. A piezoelectric element is embedded in the actuator arm to distort the arm to effect fine positioning of the head. Control circuitry distributes electrical signals to the low resolution motor and the piezoelectric element to selectively control movement thereof. The piezoelectric element is embedded in the actuator arm by removing a predetermined amount of material from the actuator arm and bonding the piezoelectric element in the resulting space in the actuator arm.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: October 9, 2001
    Assignee: Seagate Technology LLC
    Inventors: Khosrow Mohajerani, Joseph M. Sampietro, Anoush M. Fard, Jeffrey G. Barina, Muhammad A. Hawwa, LeRoy A. Volz, Tien Q. Le, Daniel R. Vigil
  • Patent number: 6295718
    Abstract: Within a method for forming a magnetoresistive (MR) sensor element there is first provided a substrate. There is then formed over the substrate a first magnetoresistive (MR) layer having formed contacting the first magnetoresistive (MR) layer a magnetically biased first magnetic bias layer biased in a first magnetic bias direction with a first magnetic bias field strength. There is also formed separated from the first magnetoresistive (MR) layer by a spacer layer a second magnetoresistive (MR) layer having formed contacting the second magnetoresistive (MR) layer a magnetically un-biased second magnetic bias layer.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: October 2, 2001
    Assignee: Headway Technologies, Inc.
    Inventors: Min Li, Simon H. Liao
  • Patent number: 6295720
    Abstract: Method for manufacturing a coil arrangement with a plurality of winding wire regions (54, 55, 56) constructed in superimposed winding wire planes in a winding tool (28) with the following method steps: fixing of the winding wire (53) in a first wire holding device (39) at the circumferential edge of a basic matrix (21), rotation of the winding tool (28) so as to lay the winding wire (53) against an additional matrix (36) arranged on the basic matrix (21) of the winding tool (28) and formation of a first winding wire region (55) arranged on the surface (26) of the basic matrix, closure of the winding tool (28) by displacing a brace (48) towards the matrix surface (26) of the basic matrix (21) and rotation of the winding tool (28) so as to lay the winding wire (53) on the winding circumference (24) of the basic matrix (21) and formation of a further winding wire region as coil element (54), fixing of the coil element (54) and rotation of the winding tool (28) with brace (48) at a distance from the matrix su
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: October 2, 2001
    Inventors: David Finn, Manfred Rietzler
  • Patent number: 6295723
    Abstract: An apparatus for building a head stack assembly from an array of head stack assembly subassemblies comprising apertured actuator arms, mounting plates, and load beams in aperture registered relation for staking that applies uniform clamping force against possibly angled subassemblies by pivoting the engagement head to be flush with the subassemblies as presented, and increases support of the mounting plates against distortion during staking by reducing the difference in size of the spacer openings and the mounting plate openings and precisely aligning the smaller spacer openings from a locus spaced from and parallel to the subassembly array.
    Type: Grant
    Filed: February 3, 1999
    Date of Patent: October 2, 2001
    Assignee: Magnecomp Corp.
    Inventor: Warren Coon
  • Patent number: 6293001
    Abstract: A lamination ceramic chip inductor includes at least one pair of insulation layers; and at least one conductive pattern which is interposed between the at least one pair of insulation layers and forming a conductive coil. At least one conductive pattern includes a conductive pattern formed as a result of electroforming.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: September 25, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Eiichi Uriu, Osamu Makino, Hironobu Chiba, Chisa Yokota
  • Patent number: 6289578
    Abstract: A thin film magnetic head in which the track width at the write pole can be set at a very small value with a high degree of accuracy without having to undergo a dry etching process. A first pole tip is laminated projecting out over a first yoke. a second pole tip is laminated onto a gap film, and has a track width which is equal to the track width of the first pole tip. The areas around the first pole tip, the second pole tip and the gap film are filled with a non-magnetic insulating film. The flattened surface of the non-magnetic insulating film forms a flat surface that is the same as the surface of the second pole tip, a second yoke, whose front end portion has a track width which is larger than the track width of the second pole tip, is laminated onto the second pole tip, with its two ends in the direction of the track width laminated onto the surface of the non-magnetic insulating film.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: September 18, 2001
    Assignee: TDK Corporation
    Inventor: Akifumi Kamijima
  • Patent number: 6289577
    Abstract: A joined metal-resin plate body having a metal plate (1, 12) and a resin plate (2, 13) joined together, in which an insert member having a through-hole therein is embedded in the resin plate. The insert member is in close contact with the resin of the resin plate in the outer periphery of the insert member except for the faces where the through-hole opens. The metal plate has a metallic joining member (4, 16) adhered thereto. The resin plate is joined to the metal plate with the aid of the joining member fitted in the through-hole. The insert member and the surrounding resin have elastic stresses (F3, F4), which give rise to a sufficient joining strength among the joining member, the insert member and the resin plate. The stress of the surrounding resin is due to elastic deformation. The amount (V2-V3) of the elastic deformation is smaller than the amount (V2) of deformation of the insert member which can give rise to an elastic stress (F3) of the insert member.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: September 18, 2001
    Assignee: Nippon Petrochemicals Company, Limited
    Inventors: Kenji Tanaka, Ken Motoi
  • Patent number: 6289564
    Abstract: A slider assembly for selectively altering a position of a transducing head with respect to a track of a rotatable disc having a plurality of concentric tracks includes a slider body having a main portion and a head portion separated by a gap. The head portion carries the transducing head. The slider body is arranged to be supported by a support structure over a surface of the rotatable disc. A pair of structural elements are disposed on opposite side surfaces of the slider body between the main portion and the head portion across the gap. At least one of the structural elements is a microactuator responsive to electrical control signals to selectively bend to alter the position of the head portion with respect to the main portion of the slider body. The structural elements may be complementary microactuators.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: September 18, 2001
    Assignee: Seagate Technology LLC
    Inventor: Vlad Joseph Novotny
  • Patent number: 6286199
    Abstract: A method for assembling an inside out motor includes the step of stacking a plurality of laminations together to form a pole member. A stator is molded around the pole member so that an end of the pole member is located adjacent an exterior surface of the molded stator. An electrically conductive magnet wire is wound around the molded stator adjacent the pole member to form a winding of the motor.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: September 11, 2001
    Assignee: General Electric Company
    Inventors: Dennis P. Bobay, Glen C. Young
  • Patent number: 6282775
    Abstract: An apparatus for injecting a plurality of coil groups into a stator core of a dynamoelectric machine is described. The injection apparatus includes, in one embodiment, a stripper assembly including a first stripper. The first stripper includes an injection disk which, in one embodiment, is formed from nylon. A first surface of the injection disk is configured to contact a segment of at least one of the coils to move the coil axially along the blades of the injection apparatus without contacting portions of the coil in gaps between the blades.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: September 4, 2001
    Assignee: General Electric Company
    Inventor: Eugene Richard Barrett
  • Patent number: 6282773
    Abstract: Insulating slot liners for insertion into stator core winding slots are formed from a narrow-width reel of insulating material. The width of the material is determined by the inner circumferential surface of the winding slot that must be insulated, instead of being based on the axial length of the stator core as has been the practice in the past. As a result, slot liners may be easily produced for stator cores of different axial lengths by simply adjusting the length of material cut from the reel. Preferably, the cutting mechanism used to cut the length of material is adapted to form a pair of opposed cuffs when the material is cut. An insulator blank formed in this manner is pushed into a die, thereby forming a U-shaped slot liner. A transfer mechanism functions to move the slot liner into a respective winding slot. The slot liner preferably passes through a reduced diameter guideway defined in a guide element as it is moved into the winding slot.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: September 4, 2001
    Assignee: Rockwell Technologies, LLC
    Inventor: C. W. Luttrell
  • Patent number: 6279223
    Abstract: A method for fabrication and testing of a magnichanical sensor for proper operation in detecting the presence of a snap ring during manufacture of an object having the snap ring for clasping a bearing. The magnichanical sensor is comprised of a magnetic field generator and a magnetic switch that are properly aligned on a sensor circuit board. The apparatus adjusts a second position of the magnetic switch with respect to a first position of the magnetic field generator on the sensor circuit board. The apparatus includes an indicator assembly coupled to the magnetic switch for indicating when the second position of the magnetic switch is properly aligned with respect to the first position of the magnetic field generator on the sensor circuit board. The second position of the magnetic switch with respect to the first position of the magnetic field generator is adjusted for proper alignment for both situations when the snap ring is present and when the snap ring is not present.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: August 28, 2001
    Assignee: Honda of America Mfg., Inc.
    Inventor: Brent C. Rankin