Patents by Inventor Haruhiko Ito
Haruhiko Ito 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).
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Publication number: 20120254905Abstract: A spindle motor includes a shaft, a cone, a turntable provide with a disk support portion, a cylindrical closed-top rotor holder, a rotor magnet, a stator, and a bearing mechanism. The cone includes a disk holding surface inclined radially outward and downward. The turntable further includes a resin-made table body having a disk support portion and an annular groove portion depressed upward at a lower side of the disk support portion, a plurality of balls rotatably arranged within the annular groove portion, an annular closure portion arranged between the table body and the rotor holder to close a lower opening of the annular groove portion, and a disc-shaped portion arranged radially inward of the annular groove portion of the table body, the disc-shaped portion having an upper surface bonded to the table body by an adhesive agent and a lower surface bonded to the rotor holder by the adhesive agent.Type: ApplicationFiled: February 28, 2012Publication date: October 4, 2012Applicant: NIDEC CORPORATIONInventors: Takuya Yamane, Haruhiko Ito, Takahiro Kikuichi, Akira Sakauchi
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Patent number: 8207386Abstract: Rubber-like or rubber-like-material-containing articles contain or are made from hydrogenated natural polyisoprenoids or modified products thereof. These rubber-like or rubber-like-material-containing articles include a rubber-like elastic article made from a hydrogenated natural polyisoprenoid or a modified product thereof. A polymer obtained by reacting a natural polyisoprenoid with hydrogen in a solvent in the presence of a hydrogenation catalyst, for example, can be used as the hydrogenated natural polyisoprenoid. The hydrogenated natural polyisoprenoid preferably has a degree of hydrogenation of 50% or more. The hydrogenated natural polyisoprenoid preferably has a weight-average molecular weight of 20×104 or more and a molecular-weight distribution of 2.0 or more. The rubber-like or rubber-like-material-containing articles have excellent heat resistance and weather resistance, and are also excellent in view of resources and environment, because they use plant-derived raw materials.Type: GrantFiled: December 1, 2004Date of Patent: June 26, 2012Assignees: Nitta Corporation, Shinichi InoueInventors: Shinichi Inoue, Tomohiro Nishio, Haruhiko Ito, Kenichi Horiuchi, Toshiaki Kasazaki
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Patent number: 8154162Abstract: A motor for holding a disk with a mounting opening in place includes a rotor unit including a rotor magnet rotatable about a central axis and a stator unit including a stator arranged opposite to the rotor magnet and a circuit board electrically connected to the stator. Wiring lines of the circuit board include output-side land portions electrically connected to first ends of coils of the stator, a connection-side land portion electrically connected to second ends of the coils forming a neutral point, a connection portion electrically connected to an external power source, output-side wiring portions arranged to electrically interconnect the output-side land portions and the connection portion, and a connection-side wiring portion arranged to electrically interconnect the connection-side land portion and the connection portion. Each of the output-side wiring portions has a width greater than a width of the connection-side wiring portion.Type: GrantFiled: February 25, 2009Date of Patent: April 10, 2012Assignee: Nidec CorporationInventors: Takahiro Suginohara, Haruhiko Ito, Toshihide Sonoda, Takuya Yamane
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Publication number: 20120017229Abstract: A cone part in a chucking device capable of freely attaching and detaching a disc having a disc shape includes an abutting portion for abutting an inner peripheral surface of a central through hole of the disc with substantially equal forces along an entire circumference thereof and aligning the disc. The cone part is made of a resin material having a high slidability than that of a material used for the disc.Type: ApplicationFiled: September 23, 2011Publication date: January 19, 2012Applicant: NIDEC CORPORATIONInventors: Haruhiko Ito, Hitoshi Takaki, Toshihide Sonoda, Takuya Yamane
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Patent number: 8095946Abstract: A cone part in a chucking device capable of freely attaching and detaching a disc having a disc shape includes an abutting portion for abutting an inner peripheral surface of a central through hole of the disc with substantially equal forces along an entire circumference thereof and aligning the disc. The cone part is made of a resin material having a high slidability than that of a material used for the disc.Type: GrantFiled: July 25, 2006Date of Patent: January 10, 2012Assignee: Nidec CorporationInventors: Haruhiko Ito, Hitoshi Takaki, Toshihide Sonoda, Takuya Yamane
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Publication number: 20110271292Abstract: In a chucking device, a rolling guide portion is arranged below an upper cover portion of a rotor holder and radially inwards of a cylinder portion of the rotor holder. This helps restrain the noises generated by the rolling movement of balls from propagating to the outside. Moreover, the turntable and the rolling guide portion are formed of a single resin member extending continuously through a through-hole defined in the rotor holder.Type: ApplicationFiled: April 22, 2011Publication date: November 3, 2011Applicant: NIDEC CORPORATIONInventors: Takuya Yamane, Haruhiko Ito, Hisakazu Motomochi, Shigeo Hayashi
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Publication number: 20110202940Abstract: A motor includes a turntable and a rotor holder unified with each other by insert-molding. The turntable includes a protrusion portion protruding radially outward beyond a cylinder portion and a substantially cylindrical covering portion extending downward from an radial inner end of the protrusion portion to cover an outer circumferential surface of the cylinder portion. The rotor holder has a radial outer end portion arranged in the same radial position as an outer circumferential surface of the covering portion or arranged radially inward of the outer circumferential surface of the covering portion. For this reason, a sliding contact area between a mold and the rotor holder is reduced. This helps suppress sliding contact between the mold and the rotor holder during a mold releasing process, consequently suppressing degradation of the mold.Type: ApplicationFiled: February 14, 2011Publication date: August 18, 2011Applicant: NIDEC CORPORATIONInventors: Haruhiko Ito, Takuya Yamane
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Patent number: 7982367Abstract: Disclosed is a piezoelectric/electrostrictive element equipped with a piezoelectric/electrostrictive drive unit having a piezoelectric/electrostrictive body, and a film external terminal electrode containing substantially no glass component and being disposed on at least one surface of the piezoelectric/electrostrictive body. The external terminal electrode is an electrode having a laminated structure equipped with a first electrode layer made of a first electrode material being disposed to contact the piezoelectric/electrostrictive body closely and containing a first metal component and a piezoelectric/electrostrictive material, and a second electrode layer made of a second electrode material containing a second metal component and substantially no piezoelectric/electrostrictive material, which the first and second metal components are in the same element system.Type: GrantFiled: September 10, 2010Date of Patent: July 19, 2011Assignee: NGK Insulators, Ltd.Inventors: Masayuki Uetani, Haruhiko Ito
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Patent number: 7979873Abstract: A chucking device for removably holding a disk with a central opening, includes a shaft coaxially arranged with a specified center axis; a turntable fixed to the shaft, the turntable having a disk support surface for supporting the disk; and a resin-made cone arranged axially above the turntable, the cone including a shaft-fixed portion fixed to the shaft, a disk holding portion having an annular disk holding surface inclined radially outwardly and axially downwardly, and an arm portion for radially interconnecting the shaft-fixed portion and the disk holding portion. Herein, the arm portion includes a support portion extending radially outwardly from the shaft-fixed portion and an elastically deformable portion joined to the support portion for being elastically deformed to axially downwardly move the disk holding portion as the disk comes into contact with the disk holding portion.Type: GrantFiled: August 29, 2008Date of Patent: July 12, 2011Assignee: Nidec CorporationInventors: Haruhiko Ito, Toshihide Sonoda, Takuya Yamane, Shigeo Kawamura, Yoshihisa Kitamura, Hisakazu Motomochi
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Publication number: 20110167436Abstract: A chucking device includes a disk support unit on which a disk is placed, a resin-made turntable arranged to directly or indirectly support the disk support unit from below, a metal member including a circular plate portion closely secured to a lower surface of the turntable, and a plurality of balls rollably arranged below the disk support unit and above the circular plate portion about a center axis in a circumferential direction. The turntable includes an antiskid member, a bottom rolling surface arranged to support the balls from below through the antiskid member and a cylindrical side rolling surface positioned radially outwards of the balls.Type: ApplicationFiled: January 5, 2011Publication date: July 7, 2011Applicant: NIDEC CORPORATIONInventors: Haruhiko Ito, Takuya Yamane
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Publication number: 20110119692Abstract: A space for accommodating therein a portion of an optical pickup mechanism is arranged below a disk loading portion of a turn table member of a chucking mechanism of the present invention. The space is arranged axially below a disk mounting surface. Since such space is provided, a recording/reproducing portion will be allowed to move closer to a brushless motor, and therefore a second lens arranged further away from the brushless motor will be allowed to move radially inward of a recording/reproducing area of an optical disk.Type: ApplicationFiled: January 24, 2011Publication date: May 19, 2011Applicant: NIDEC CORPORATIONInventors: Haruhiko Ito, Toshihide Sonoda, Takuya Yamane
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Patent number: 7917918Abstract: A space for accommodating therein a portion of an optical pickup mechanism is arranged below a disk loading portion of a turn table member of a chucking mechanism of the present invention. The space is arranged axially below a disk mounting surface. Since such space is provided, a recording/reproducing portion will be allowed to move closer to a brushless motor, and therefore a second lens arranged further away from the brushless motor will be allowed to move radially inward of a recording/reproducing area of an optical disk.Type: GrantFiled: June 20, 2007Date of Patent: March 29, 2011Assignee: Nidec CorporationInventors: Haruhiko Ito, Toshihide Sonoda, Takuya Yamane
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Publication number: 20110035764Abstract: A chucking device includes a turntable fixed to a shaft having a central axis and a cone arranged axially above the turntable. An annular yoke is arranged above a sliding portion of the cone and fixed to the shaft, and a clamp magnet is fixed to the yoke through an adhesive agent. The yoke includes an upper surface having an annular recess defined in a concentric relationship with the central axis, the adhesive agent being applied on a region of the upper surface existing radially inwards of the recess. The recess includes a radial outer wall parallel to the central axis and a radial inner wall inclined radially inwards and axially upwards. The angle between the radial outer wall and a lower surface of the clamp magnet is greater than the angle between the radial inner wall and the lower surface of the clamp magnet.Type: ApplicationFiled: October 20, 2010Publication date: February 10, 2011Applicant: NIDEC CORPORATIONInventors: Haruhiko Ito, Toshihide Sonoda, Daisuke Tsunashima, Takuya Yamane, Shigeo Kawamura, Yoshihisa Kitamura, Hisakazu Motomochi
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Patent number: 7873971Abstract: A motor includes a chucking device to hold a disk having a central opening in a detachable manner. In the chucking device, a turntable part is arranged above a rotor holder and has a disk support surface for supporting the disk. An axially slidable cone part is arranged above the turntable part. A resilient member is axially arranged between the turntable part and the cone part upwardly biases the cone part. Further, the turntable part includes an inner table made of a metal and fixed to the shaft, and an outer table made of a resin material and fixed to an outside of the inner table. The outer table has the disk support surface and is axially spaced apart from the rotor holder in a position where the inner table and the outer table are fixed to each other.Type: GrantFiled: February 22, 2008Date of Patent: January 18, 2011Assignee: Nidec CorporationInventors: Haruhiko Ito, Takuya Yamane, Shigeo Kawamura, Yoshihisa Kitamura
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Publication number: 20100327703Abstract: Disclosed is a piezoelectric/electrostrictive element equipped with a piezoelectric/electrostrictive drive unit having a piezoelectric/electrostrictive body, and a film external terminal electrode containing substantially no glass component and being disposed on at least one surface of the piezoelectric/electrostrictive body. The external terminal electrode is an electrode having a laminated structure equipped with a first electrode layer made of a first electrode material being disposed to contact the piezoelectric/electrostrictive body closely and containing a first metal component and a piezoelectric/electrostrictive material, and a second electrode layer made of a second electrode material containing a second metal component and substantially no piezoelectric/electrostrictive material, which the first and second metal components are in the same element system.Type: ApplicationFiled: September 10, 2010Publication date: December 30, 2010Applicant: NGK Insulators, Ltd.Inventors: Masayuki Uetani, Haruhiko Ito
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Publication number: 20100289762Abstract: This invention aims to provide a transparent conductive laminate excellent in sliding durability, edge-writing durability, finger writing durability and light resistance and suitable as a movable electrode substrate for a touch panel. Further, it aims to provide a touch panel using the above transparent conductive laminate. This invention is a transparent conductive laminate that is a laminate formed by laminating a polymer film, a cured resin layer-1 and a transparent conductive layer in this order, the cured resin layer-1 having concavoconvex shapes formed by phase separation of two components and containing no fine particles that impart concavoconvex shapes, and the cured resin layer-1 having an arithmetic average roughness (Ra), measured according to JIS B0601-1994, of 0.05 ?m or more but less than 0.5 ?m and a ten-point average roughness (Rz), measured according to JIS B0601-1982, of 0.5 ?m or more but less than 2.0 ?m, and a touch panel using the transparent conductive laminate.Type: ApplicationFiled: September 19, 2008Publication date: November 18, 2010Applicants: TEIJIN LIMITEDInventors: Haruhiko Ito, Koichi Ueda, Kazuhito Kobayashi, Hidefumi Kusuda
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Patent number: 7833588Abstract: The transparent conductive laminate of the invention is a laminate comprising a film made of a polymer with a photoelastic constant of no greater than 70×10?12 Pa?1, a light-scattering layer with a haze value in the range of 0.2-1.4% formed on one side thereof, and a transparent conductive layer formed on the other side thereof, wherein the laminate exhibits an overall retardation of ?/4. By using the laminate it is possible to provide touch panels with reduced light reflection, no coloration, excellent visibility and high reliability for outdoor use, as well as touch panel-equipped liquid crystal displays employing them.Type: GrantFiled: December 18, 2003Date of Patent: November 16, 2010Assignee: Teijin LimitedInventors: Hitoshi Mikoshiba, Haruhiko Ito, Isao Shiroishi
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Publication number: 20100260986Abstract: A transparent conductive laminate for obtaining a transparent touch panel improved in the durability in writing which has been required of conventional transparent touch panels and in durability in writing in marginal regions of the transparent touch panel (margin pushing durability). Also provided is a transparent touch panel employing the laminate. The transparent conductive laminate comprises a polymer film and, superposed on at least one side thereof in the following order, a cured resin layer, a transparent conductive layer (1), and another transparent conductive layer (2). The transparent conductive layer (1) is a crystalline transparent conductive layer containing no organic ingredient.Type: ApplicationFiled: October 23, 2008Publication date: October 14, 2010Applicant: TEIJIN LIMITEDInventor: Haruhiko Ito
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Patent number: 7807261Abstract: A transparent conductive laminate consisting of a transparent polymer substrate, an uneven cured resin layer formed on at least one side of the substrate and a transparent conductive layer formed on the cured resin layer directly or through another layer. The cured resin layer contains fine particles A having an average primary particle diameter of 0.5 to 5 ?m and super fine particles C having an average primary particle diameter of 100 nm or less made of a metal oxide and/or a metal fluoride. The above transparent conductive laminate does not cause the deterioration of visibility by sparkling even when a transparent touch panel is mounted on a high-definition display and can prevent “Newton rings” which occurs between two transparent electrode substrates constituting the transparent touch panel.Type: GrantFiled: November 25, 2004Date of Patent: October 5, 2010Assignee: Teijin LimitedInventors: Isao Shiroishi, Haruhiko Ito, Hitoshi Mikoshiba
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Publication number: 20090315849Abstract: A transparent conductive multilayer body includes a cured resin layer, a first transparent conductive layer, and a second transparent conductive layer sequentially laminated on at least one surface of a polymer film. The first transparent conductive layer is a crystalline transparent conductive layer free of an organic component. The second transparent conductive layer contains alkoxysilane, and at least one kind of fine particles A formed of conductive fine particles of metal oxide or metal having an average primary particle diameter of 100 nm or less.Type: ApplicationFiled: January 15, 2008Publication date: December 24, 2009Applicant: TEIJIN LIMITEDInventor: Haruhiko Ito