Patents by Inventor Takuma Kido

Takuma Kido 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: 9978408
    Abstract: A thin-film piezoelectric material element includes a piezoelectric part having a laminated structure which a lower electrode film, a piezoelectric material film and an upper electrode film are laminated sequentially, and electrode pads connected with the piezoelectric part. The thin-film piezoelectric material element has solder regulating parts formed on pad surfaces being surfaces of the electrode pads. The solder regulating parts have peripheral edge parts and crossing edge parts connected with the two outer edge parts, and formed to cross the pad surfaces. The crossing edge parts are formed in a bow like curve-shape having curved parts, being gradually distant from the shortest line as they are distant more from the outer edge parts.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: May 22, 2018
    Assignees: SAE MAGNETICS (H.K.) LTD., TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Naoto Matono, Kazushi Nishiyama, Hirofumi Nesori, Takuma Kido
  • Publication number: 20180137883
    Abstract: A thin-film piezoelectric material element includes a piezoelectric part having a laminated structure which a lower electrode film, a piezoelectric material film and an upper electrode film are laminated sequentially, and electrode pads connected with the piezoelectric part. The thin-film piezoelectric material element has solder regulating parts formed on pad surfaces being surfaces of the electrode pads. The solder regulating parts have peripheral edge parts and crossing edge parts connected with the two outer edge parts, and formed to cross the pad surfaces. The crossing edge parts are formed in a bow like curve-shape having curved parts, being gradually distant from the shortest line as they are distant more from the outer edge parts.
    Type: Application
    Filed: November 15, 2016
    Publication date: May 17, 2018
    Inventors: Naoto MATONO, Kazushi NISHIYAMA, Hirofumi NESORI, Takuma KIDO
  • Publication number: 20180040352
    Abstract: According to one embodiment, a disk device includes a housing and a sealing board fixed to a base of the housing. The base includes a through-hole and an installation surface formed around the through-hole. One of a first principal surface of the sealing board and the installation surface includes a projection formed therein. The sealing board is fixed to the installation surface by an adhesive material provided on an outer side of the projection with respect to the through-hole with the first principal surface or the installation surface abutting against the projection.
    Type: Application
    Filed: March 15, 2017
    Publication date: February 8, 2018
    Inventors: Makoto Okamoto, Takuma Kido, Yasutaka Sasaki
  • Patent number: 9886985
    Abstract: According to one embodiment, a disk device includes a housing and a sealing board fixed to a base of the housing. The base includes a through-hole and an installation surface formed around the through-hole. One of a first principal surface of the sealing board and the installation surface includes a projection formed therein. The sealing board is fixed to the installation surface by an adhesive material provided on an outer side of the projection with respect to the through-hole with the first principal surface or the installation surface abutting against the projection.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: February 6, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Makoto Okamoto, Takuma Kido, Yasutaka Sasaki
  • Patent number: 9245557
    Abstract: According to one embodiment, a head gimbal assembly includes a support plate, a wiring member including a thin metallic plate, an insulating layer and a conductive layer, the wiring member including a tongue portion located on a convex portion of the support plate, a proximal end portion fixed onto the support plate, and a bridge portion bridged between the tongue portion and the proximal end portion and including a inflection point with respect to a height direction of warping, a magnetic head attached to the tongue portion, and a piezoelectric element bonded to the bridge portion at a section between the proximal end portion and the inflection point.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: January 26, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masaya Kudo, Yasutaka Sasaki, Takuma Kido
  • Patent number: 9245552
    Abstract: According to an embodiment, a head gimbal assembly includes a support plate, a wiring member, a magnetic head and drive members. A gimbal portion of the wiring member includes a thin metallic plate including a tongue portion mounted with a magnetic head, a proximal end portion fixed to the support plate, support projections, and link portions, an insulating layer including first bridge portions extending from the proximal end portion to the tongue portion, and second bridge portions extending from the proximal end portion to middle portions of the first bridges, and a conducive layer including signal wirings extending to the tongue portion through the second and first bridge portions, and reinforcement wiring portions. The drive members are provided at the first bridge portions.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: January 26, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takuma Kido, Yasutaka Sasaki, Masaya Kudo
  • Publication number: 20150262600
    Abstract: According to one embodiment, a head gimbal assembly includes a support plate, a wiring member including a thin metallic plate, an insulating layer and a conductive layer, the wiring member including a tongue portion located on a convex portion of the support plate, a proximal end portion fixed onto the support plate, and a bridge portion bridged between the tongue portion and the proximal end portion and including a inflection point with respect to a height direction of warping, a magnetic head attached to the tongue portion, and a piezoelectric element bonded to the bridge portion at a section between the proximal end portion and the inflection point.
    Type: Application
    Filed: May 29, 2015
    Publication date: September 17, 2015
    Inventors: Masaya KUDO, Yasutaka SASAKI, Takuma KIDO
  • Publication number: 20150243309
    Abstract: According to an embodiment, a head gimbal assembly includes a support plate, a wiring member, a magnetic head and drive members. A gimbal portion of the wiring member includes a thin metallic plate including a tongue portion mounted with a magnetic head, a proximal end portion fixed to the support plate, support projections, and link portions, an insulating layer including first bridge portions extending from the proximal end portion to the tongue portion, and second bridge portions extending from the proximal end portion to middle portions of the first bridges, and a conducive layer including signal wirings extending to the tongue portion through the second and first bridge portions, and reinforcement wiring portions. The drive members are provided at the first bridge portions.
    Type: Application
    Filed: February 6, 2015
    Publication date: August 27, 2015
    Inventors: Takuma Kido, Yasutaka Sasaki, Masaya Kudo
  • Patent number: 9064510
    Abstract: According to one embodiment, a suspension assembly includes a support plate including a distal end portion, a trace member attached to the support plate, an elastic supporting member made from a distal end portion of the trace member and configured to support a head, and an actuation element expandable/contractible in the longitudinal direction of the trace member, at least a part of a bottom of which is adhered to a seating surface formed from a cover insulating layer of the trace member.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: June 23, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takafumi Kikuchi, Yasutaka Sasaki, Takuma Kido, Kenichiro Aoki, Masaya Kudo
  • Patent number: 9047896
    Abstract: According to one embodiment, a head gimbal assembly includes a support plate, a wiring member including a thin metallic plate, an insulating layer and a conductive layer, the wiring member including a tongue portion located on a convex portion of the support plate, a proximal end portion fixed onto the support plate, and a bridge portion bridged between the tongue portion and the proximal end portion and including a inflection point with respect to a height direction of warping, a magnetic head attached to the tongue portion, and a piezoelectric element bonded to the bridge portion at a section between the proximal end portion and the inflection point.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: June 2, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masaya Kudo, Yasutaka Sasaki, Takuma Kido
  • Patent number: 8988831
    Abstract: According to an embodiment, a head gimbal assembly includes a support plate, a wiring member, a magnetic head and drive members. A gimbal portion of the wiring member includes a thin metallic plate including a tongue portion mounted with a magnetic head, a proximal end portion fixed to the support plate, support projections, and link portions, an insulating layer including first bridge portions extending from the proximal end portion to the tongue portion, and second bridge portions extending from the proximal end portion to middle portions of the first bridges, and a conducive layer including signal wirings extending to the tongue portion through the second and first bridge portions, and reinforcement wiring portions. The drive members are provided at the first bridge portions.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: March 24, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takuma Kido, Yasutaka Sasaki, Masaya Kudo
  • Publication number: 20100238594
    Abstract: According to one embodiment, a head suspension assembly includes: a metal thin plate held by a head suspension; a fixed plate formed in the metal thin plate and joined to the head suspension; a supporting plate formed in the metal thin plate on the front side of the fixed plate and supporting a head slider on a surface thereof and held on a rear surface thereof by a protrusion formed on the head suspension; an arm formed in the metal thin plate and extending from the fixed plate to the supporting plate and allowing a change in a posture of the supporting plate; an insulating layer extending from the fixed plate to the supporting plate and supported by the arm; a wiring pattern formed on the insulating layer; and a visco-elastic body arranged on a flat surface formed on the arm, the insulating layer, or the wiring pattern.
    Type: Application
    Filed: March 18, 2010
    Publication date: September 23, 2010
    Applicant: TOSHIBA STORAGE DEVICE CORPORATION
    Inventors: Kenzo NAKAMURA, Shinji KOGANEZAWA, Takuma KIDO
  • Publication number: 20100142081
    Abstract: According to one embodiment, a magnetic disk device includes a magnetic disk, a magnetic head, and an actuator. The magnetic disk stores data. The magnetic head floats due to an air flow produced by the rotation of the magnetic disk to write and read data to and from the magnetic disk. The actuator includes a suspension and an actuator arm. The suspension supports the magnetic head. The actuator arm supports the suspension. The actuator is provided with a strip projection, a bump, a plurality of projections, or a concave portion on the upstream side of an air flow produced by the rotation of the magnetic disk.
    Type: Application
    Filed: December 3, 2009
    Publication date: June 10, 2010
    Applicant: TOSHIBA STORAGE DEVICE CORPORATION
    Inventors: Kei Funabashi, Takuma Kido
  • Publication number: 20100079915
    Abstract: According to one embodiment, a magnetic head assembly includes a magnetic head, a tang portion, a pair of arm portions, a connecting portion, a flexure, a load beam, and a damper. The tang portion supports the magnetic head. The arm portions support the tang portion, and are connected to the tang portion while being connected to each other at a rear side of the tang portion. The connecting portion connects the arm portions. The flexure has a narrow portion being narrow in the width direction behind the connecting portion. The flexure guides wirings extending backward the narrow portion to be connected to the magnetic head. The load beam extends in the front-back direction while supporting the flexure, and has an opening through which a portion of the flexure is exposed. The damper is arranged on the load beam and the portion of the flexure.
    Type: Application
    Filed: September 17, 2009
    Publication date: April 1, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Takuma Kido
  • Patent number: 7688551
    Abstract: A hinge plate is bonded to a base plate and a load beam in a head suspension assembly. The load beam includes a wide section and a narrow section extending forward from the front end of the wide section. The head suspension assembly allows the load beam to have a narrower width based on the narrow section. The load beam is thus allowed to enjoy a reduced weight. The mass is reduced at a position distanced from the centerline of the load beam. This results in a reduction in the inertial force around the centerline in the load beam. The inventors have demonstrated that the resonance frequency of the first torsion mode is allowed to fall in a higher frequency range. The resonance of the head suspension assembly can be reduced.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: March 30, 2010
    Assignee: Toshiba Storage Device Corporation
    Inventors: Takuma Kido, Toru Watanabe
  • Publication number: 20090195933
    Abstract: A head assembly for writing or reading information to or from a recording medium. The head assembly includes a suspension having an electrode pad; a mounting member placed on the suspension; a head mounted on the mounting member and having an electrode, for writing or reading information; and a first bonding member made of a hot-melt adhesive and fixing the electrode to the electrode pad.
    Type: Application
    Filed: January 28, 2009
    Publication date: August 6, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Takuma Kido, Atsushi Koga, Satoshi Emoto, Kenrou Yamamoto, Takeshi Ohwe
  • Patent number: 7551399
    Abstract: A plate member is made of a metal material lighter than stainless steel in a suspension for a head slider. This leads to a reduction in the weight of the suspension. The natural frequency of the suspension is thus raised. Moreover, the viscoelastic member is interposed between the front surface of the plate member and the back surface of the flexure. This structure allows either the plate member or the flexure to act as a base and the other to act as a constraining member. In other words, the plate member, the flexure and the viscoelastic member in combination act as a so-called vibration damper including constraining layers. The viscoelastic member serves to further suppress vibration of the plate member and the flexure.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: June 23, 2009
    Assignee: Fujitsu Limited
    Inventors: Takuma Kido, Keiji Aruga, Shinji Koganezawa, Toru Watanabe
  • Publication number: 20080049361
    Abstract: Connecting pieces extend outward from the support plate in the opposite directions along a crossline. A flexure body is connected to the connecting pieces. A pad is fixed to the support plate at a position ahead of the crossline. A wiring pattern extends from a pad. The wiring pattern defines a first straight portion extending forward from the flexure body along a first straight line. A second straight portion extends along a second straight line intersecting with the first straight line. A curved portion connects the first straight portion to the second straight portion. The curved portion expands outward from at least one of the first and second straight lines. The support plate merely suffers from a bending at a position ahead of the imaginary crossline even if the solder generates a stress based on its shrinkage. The wiring pattern serves to absorb the stress.
    Type: Application
    Filed: January 9, 2007
    Publication date: February 28, 2008
    Inventors: Hiroaki Kushima, Shinji Koganezawa, Takeshi Ohwe, Takuma Kido, Yasuo Suzuki
  • Patent number: 7336444
    Abstract: Vibrations in a magnetic head assembly equipped with a magnetic head, caused by the effects of the flow of air arising from the high-speed rotation of a magnetic disk, can be suppressed by affixing a damping material to the magnetic head assembly. As a result, accurate positioning is possible with high reliability, the frequency of occurrence of errors during data recording and playback can be suppressed, high data transfer rates can be maintained, and high recording densities for a magnetic disk device can be realized.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: February 26, 2008
    Assignee: Fujitsu Limited
    Inventors: Takuma Kido, Tomoo Sukagawa, Keiji Aruga
  • Publication number: 20080037176
    Abstract: A disk apparatus includes a ramp which holds a tip end of an arm at a position away from a disk, and a slit shroud having an airflow control plate. A side surface of the airflow control plate is opposed to a side surface of the disk, the airflow control plate spreads to a position where the airflow control plate is superposed on the tip end of the arm held by the ramp. The airflow control plate has the same thickness as that of the disk, and is flush with the disk 12.
    Type: Application
    Filed: January 5, 2007
    Publication date: February 14, 2008
    Inventors: Yoshiharu Matsuda, Hisashi Kaneko, Masaya Suwa, Toru Watanabe, Takuma Kido, Yasuo Suzuki