Patents by Inventor Kimihiko Sudo
Kimihiko Sudo 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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Patent number: 9704539Abstract: A hermetically-sealed hard disk drive (HDD) utilizes a laminated film seal to seal an interface of an electrical flexible cable assembly and an HDD enclosure base. The laminated film seal may be constructed of a heat sealant layer that bonds with a surface of the base and a surface of the flex cable, a barrier layer which inhibits gas from escaping from inside the HDD, and a film surface protective layer which protects the heat sealant and barrier layers. Embodiments may include a heat sealant layer comprising a thermoplastic polymer such as polypropylene, a barrier layer comprising a metal such as aluminum, and a film surface protective layer comprising a thermoplastic polymer such as polyethylene terephthalate.Type: GrantFiled: December 9, 2015Date of Patent: July 11, 2017Assignee: Western Digital Technologies, Inc.Inventors: Kimihiko Sudo, Takako Hayakawa, Yuichi Arai, Yuta Onobu
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Publication number: 20170169861Abstract: A hermetically-sealed hard disk drive (HDD) utilizes a laminated film seal to seal an interface of an electrical flexible cable assembly and an HDD enclosure base. The laminated film seal may be constructed of a heat sealant layer that bonds with a surface of the base and a surface of the flex cable, a barrier layer which inhibits gas from escaping from inside the HDD, and a film surface protective layer which protects the heat sealant and barrier layers. Embodiments may include a heat sealant layer comprising a thermoplastic polymer such as polypropylene, a barrier layer comprising a metal such as aluminum, and a film surface protective layer comprising a thermoplastic polymer such as polyethylene terephthalate.Type: ApplicationFiled: December 9, 2015Publication date: June 15, 2017Inventors: Kimihiko Sudo, Takako Hayakawa, Yuichi Arai, Yuta Onobu
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Publication number: 20170169860Abstract: A hermetically-sealed hard disk drive (HDD) utilizes a laminated film seal to seal an interface of an electrical feed-through connector and an HDD enclosure base. The laminated film seal may be constructed of a heat sealant layer that bonds with a surface of the base and a surface of the electrical connector, a barrier layer which inhibits gas from escaping from inside the HDD, and a film surface protective layer which protects the heat sealant and barrier layers. Embodiments may include a heat sealant layer comprising a thermoplastic polymer such as polypropylene, a barrier layer comprising a metal such as aluminum, and a film surface protective layer comprising a thermoplastic polymer such as polyethylene terephthalate.Type: ApplicationFiled: December 9, 2015Publication date: June 15, 2017Inventors: Kimihiko Sudo, Takako Hayakawa, Yuichi Arai, Yuta Onobu
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Publication number: 20170169862Abstract: A hermetically-sealed hard disk drive (HDD) utilizes a laminated film seal to seal an HDD cover-to-base interface. The laminated film seal may be constructed of a heat sealant layer hermetically-coupled to and forming a seal with the base, a barrier layer which inhibits gas from escaping from inside the HDD, and a film surface protective layer which protects the heat sealant and barrier layers. Embodiments may include a heat sealant layer comprising a thermoplastic polymer such as polypropylene, a barrier layer comprising a metal such as aluminum, and a film surface protective layer comprising a thermoplastic polymer such as polyethylene terephthalate.Type: ApplicationFiled: December 9, 2015Publication date: June 15, 2017Inventors: Kimihiko Sudo, Takako Hayakawa, Yuichi Arai, Yuta Onobu
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Patent number: 9570114Abstract: A hermetically-sealed hard disk drive (HDD) utilizes a laminated film enclosure to hermetically seal an HDD within. The laminated film enclosure may be constructed of a heat sealant layer hermetically-sealed around the HDD, a barrier layer which inhibits gas from escaping from inside the laminated film enclosure, and a film surface protective layer which protects the heat sealant and barrier layers. Embodiments may include a heat sealant layer comprising a thermoplastic polymer such as polypropylene, a barrier layer comprising a metal such as aluminum, and a film surface protective layer comprising a thermoplastic polymer such as polyethylene terephthalate.Type: GrantFiled: January 15, 2016Date of Patent: February 14, 2017Assignee: HGST Netherlands B.V.Inventors: Kimihiko Sudo, Kazuki Takeichi, Takako Hayakawa, Yuta Onobu
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Patent number: 9558790Abstract: Embodiments disclosed herein generally relate to hermetic electrical connectors used in hard disk drives. The hermetic electrical connector includes a barrier structure having a first plurality of connecting pads disposed on a first surface of the barrier structure and a second plurality of connecting pads disposed on a second surface of the barrier structure opposite the first surface. A plurality of conductors is disposed within the barrier structure, and each conductor is coupled to a connecting pad of the first plurality of connecting pads and a corresponding connecting pad of the second plurality of connecting pads. The barrier structure further includes a dielectric material between the first and second surfaces, and one or more layers embedded in the dielectric material. The addition of the layers helps choke the helium gas flow, thus improving sealing of the electrical connector while maintaining high-speed electrical transmission.Type: GrantFiled: March 24, 2016Date of Patent: January 31, 2017Assignee: HGST Netherlands B.V.Inventors: Yuta Onobu, Takako Hayakawa, Kimihiko Sudo, Seong-Hun Choe, Takehito Nagata, Yuji Soga, Nobumasa Nishiyama, Kazuhiro Nagaoka
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Publication number: 20150015995Abstract: Approaches to maintaining hard disk drive spindle motor rigidity and performance in low profile HDD devices comprise using an enclosure base with a bottom opening in which a separate motor cup is fitted and configured to support the spindle motor. The motor cup may then be fabricated using a different material than the enclosure base, such as a material having a higher modulus of elasticity than that of the base. Furthermore, a magnetic motor cup may be used to substitute for the thrust yoke typically used with conventional spindle motors.Type: ApplicationFiled: July 11, 2013Publication date: January 15, 2015Inventors: Kimihiko Sudo, Mutsuro Ohta, Yasuhiro Sakata, Kouki Uefune
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Patent number: 8767353Abstract: A hard disk drive including a plurality of magnetic disks and a voice coil motor. The voice coil motor includes a coil and a first damper plate for dampening vibrations generated by the coil. The first damper plate is disposed within the voice coil motor.Type: GrantFiled: December 28, 2010Date of Patent: July 1, 2014Assignee: HGST Netherlands B.V.Inventors: Kimihiko Sudo, Kouki Uefune, Hiromitsu Masuda, Takako Hayakawa
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Patent number: 8659849Abstract: A hermetically resealable hard-disk drive (HDD) configured for recharging with a low-density gas. The hermetically resealable HDD includes a disk enclosure (DE), a magnetic-recording disk, a head-slider, an actuator, a low-density gas, a through-hole, and a plug. The DE includes a base, and a first cover and a second cover joined to the base. The second cover is disposed above the first cover. The through-hole is configurable for injection of a low-density gas into the DE. The low-density gas, having a density less than air, substantially fills the DE. The plug is press-fitted into, and hermetically seals, the through-hole. The plug is removable to allow recharging the DE with the low-density gas; and, the through-hole is configured to accept a resealing plug to be press-fit into, and to reseal hermetically, the through-hole after recharging. A method for injecting low-density gas into, and sealing, the hermetically resealable HDD is also provided.Type: GrantFiled: December 29, 2011Date of Patent: February 25, 2014Assignee: HGST Netherlands B.V.Inventors: Takako Hayakawa, Kouki Uefune, Kimihiko Sudo, Noritaka Otake
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Patent number: 8630061Abstract: A hard disk drive comprising, a base plate comprising a pin, a top cover, a plurality of magnetic disks, and a spoiler. The spoiler includes a first spring fastener for temporary spring fastening the spoiler on the base plate, and a second spring fastener for resiliently fastening the spoiler when the top cover is attached to the base plate.Type: GrantFiled: December 27, 2010Date of Patent: January 14, 2014Assignee: HGST Netherlands B.V.Inventors: Kimihiko Sudo, Hiromitsu Masuda, Kouki Uefune, Yoshiyuki Hirono
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Patent number: 8547502Abstract: It is to provide a light source module capable of downsizing an edge-light type backlight in thickness and reducing the usage amount of resin. A method of manufacturing a light source module includes a process of preparing a substrate with a first reflector including a reflecting surface mounted thereon, a process of mounting a plurality of light emitting elements on the substrate, a process of mounting a wiring board having an electrode on the substrate, a process of connecting the electrode of the light emitting element and the electrode of the wiring board with metal wire, a process of mounting a second reflector having a reflecting surface on the wiring board, and a process of filling the space between the first reflector and the second reflector, with resin.Type: GrantFiled: October 21, 2008Date of Patent: October 1, 2013Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Norio Nakazato, Kimihiko Sudo, Hiroshi Akai, Naoki Yotsumoto, Hiroshi Oyama, Shigeyuki Sasaki, Atsushi Hatakeyama, Takaaki Maruyama, Kouichi Tanabe
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Publication number: 20130170074Abstract: A hermetically resealable hard-disk drive (HDD) configured for recharging with a low-density gas. The hermetically resealable HDD includes a disk enclosure (DE), a magnetic-recording disk, a head-slider, an actuator, a low-density gas, a through-hole, and a plug. The DE includes a base, and a first cover and a second cover joined to the base. The second cover is disposed above the first cover. The through-hole is configurable for injection of a low-density gas into the DE. The low-density gas, having a density less than air, substantially fills the DE. The plug is press-fitted into, and hermetically seals, the through-hole. The plug is removable to allow recharging the DE with the low-density gas; and, the through-hole is configured to accept a resealing plug to be press-fit into, and to reseal hermetically, the through-hole after recharging. A method for injecting low-density gas into, and sealing, the hermetically resealable HDD is also provided.Type: ApplicationFiled: December 29, 2011Publication date: July 4, 2013Inventors: Takako Hayakawa, Kouki Uefune, Kimihiko Sudo, Noritaka Otake
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Publication number: 20120162824Abstract: A hard disk drive comprising, a base plate comprising a pin, a top cover, a plurality of magnetic disks, and a spoiler. The spoiler includes a first spring fastener for temporary spring fastening the spoiler on the base plate, and a second spring fastener for resiliently fastening the spoiler when the top cover is attached to the base plate.Type: ApplicationFiled: December 27, 2010Publication date: June 28, 2012Inventors: Kimihiko Sudo, Hiromitsu Masuda, Kouki Uefune, Yoshiyuki Hirono
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Publication number: 20120162826Abstract: A hard disk drive including a plurality of magnetic disks and a voice coil motor. The voice coil motor includes a coil and a first damper plate for dampening vibrations generated by the coil. The first damper plate is disposed within the voice coil motor.Type: ApplicationFiled: December 28, 2010Publication date: June 28, 2012Inventors: Kimihiko Sudo, Kouki Uefune, Hiromitsu Masuda, Takako Hayakawa
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Patent number: 8179745Abstract: A head gimbal assembly including a gimbal provided with a tongue comprising a stage; a sub-mount comprising a laser diode, wherein the laser diode is disposed internally in the sub-mount, and wherein the sub-mount is mounted on said stage; a head slider for thermally assisted recording, wherein the head slider is disposed on the sub-mount; a first piezoelectric element; a second piezoelectric element; and a plurality of lead wires.Type: GrantFiled: March 17, 2010Date of Patent: May 15, 2012Assignee: Hitachi Global Storage Technologies, Netherlands B.V.Inventors: Shigeo Nakamura, Kimihiko Sudo, Irizo Naniwa, Shinobu Hagiya, Shigenori Takada
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Patent number: 8154821Abstract: A magnetic head-positioning servo system is provided to accurately test a magnetic disk with a track written in advance, by providing two fine actuators. The second fine actuator, to which a magnetic head is attached, is mounted on the first fine actuator. The second fine actuator has a larger generating displacement than a generating displacement of the first fine actuator, and lets the magnetic disk to follow the eccentricity of the track. In this way, the positioning accuracy can be increased.Type: GrantFiled: August 7, 2009Date of Patent: April 10, 2012Assignee: Hitachi High-Technologies CorporationInventors: Shigeo Nakamura, Kimihiko Sudo, Toshinori Sugiyama, Yasuhiro Matsuda, Yukio Yamamoto, Yoshihiro Sakurai
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Publication number: 20110096438Abstract: A head-gimbal assembly. The head-gimbal assembly includes a gimbal including a tongue, a stage forming a portion of the tongue, a head-slider bonded to the stage, first and second piezoelectric elements disposed on a rear side of the stage within an area of the tongue, and a trace formed on the gimbal. The first and second piezoelectric elements include respectively both a front connection pad and a rear connection pad, and are configured to extend and to contract in a fore-and-aft direction. The trace includes a plurality of leads for connecting a plurality of connection pads interconnected with a plurality of connection pads of the head-slider and configured for interconnection to connection pads of a preamplifier integrated circuit. The plurality of leads runs through and in between the front connection pad of the first piezoelectric element and the front connection pad of the second piezoelectric element.Type: ApplicationFiled: December 18, 2009Publication date: April 28, 2011Inventors: Shigenori TAKADA, Haruhide Takahashi, Shinobu Hagiya, Kousaku Wakatsuki, Hiroyasu Tsuchida, Kimihiko Sudo
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Publication number: 20100238581Abstract: A head gimbal assembly including a gimbal provided with a tongue comprising a stage; a sub-mount comprising a laser diode, wherein the laser diode is disposed internally in the sub-mount, and wherein the sub-mount is mounted on said stage; a head slider for thermally assisted recording, wherein the head slider is disposed on the sub-mount; a first piezoelectric element; a second piezoelectric element; and a plurality of lead wires.Type: ApplicationFiled: March 17, 2010Publication date: September 23, 2010Inventors: Shigeo Nakamura, Kimihiko Sudo, Irizo Naniwa, Shinobu Hagiya, Shigenori Takada
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Publication number: 20100079900Abstract: A magnetic head-positioning servo system is provided to accurately test a magnetic disk with a track written in advance, by providing two fine actuators. The second fine actuator, to which a magnetic head is attached, is mounted on the first fine actuator. The second fine actuator has a larger generating displacement than a generating displacement of the first fine actuator, and lets the magnetic disk to follow the eccentricity of the track. In this way, the positioning accuracy can be increased.Type: ApplicationFiled: August 7, 2009Publication date: April 1, 2010Inventors: Shigeo NAKAMURA, Kimihiko SUDO, Toshinori SUGIYAMA, Yasuhiro MATSUDA, Yukio YAMAMOTO, Yoshihiro SAKURAI
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Patent number: 7525191Abstract: A semiconductor light source device, for enabling to cool LED elements driven with short pulses, effectively, and also being cheaply producible without increasing the number of pats thereof, comprising a plural number of light emitting diode chips 202 on a heat diffusion plate 201, and Peltier elements 208, as being thermoelectric cooling elements, for cooling the plural number of light emitting diode chips 202, wherein a pair of members 208(n) and 2008(p), building up the Peltier element for cooling each the light emitting diode chip, are electrically connected on each of the light emitting diode chip through bumps 207, so as to form said light emitting diode chip and the Peltier element as a unit on the heat diffusion plate, respectively, and thereby moving heat generation within each of the light emitting diode chips, directly, into the heat diffusion plate and/or a heat radiation plate.Type: GrantFiled: April 7, 2006Date of Patent: April 28, 2009Assignee: Hitachi, Ltd.Inventors: Norio Nakazato, Kimihiko Sudo