Patents by Inventor Hirofumi Kuribara
Hirofumi Kuribara 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: 11948607Abstract: According to one embodiment, a disk device includes rotatable magnetic disks, a first actuator assembly rotatably supported on a pivot through a first bearing unit, a second actuator assembly rotatably supported on the pivot through a second bearing unit and provided side by side with the first actuator assembly in an axial direction of the pivot, and a filter unit provided between the magnetic disks and the first and second actuator assemblies. The filter unit includes a holder including a shielding portion facing a boundary portion between the first actuator assembly and the second actuator assembly and a ventilation opening provided at a position spaced apart from the boundary portion in the axial direction, and a filter held by the holder and facing the ventilation opening.Type: GrantFiled: March 6, 2023Date of Patent: April 2, 2024Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventor: Hirofumi Kuribara
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Publication number: 20240096377Abstract: According to one embodiment, a disk device includes a housing, magnetic disks in the housing, and a printed circuit board attached to an outer surface of a bottom wall of the housing. The housing includes a base including a bottom wall and a side wall, and at least two base-side positioning portions provided on the bottom wall in a region overlapping the side wall. The printed circuit board includes at least two board-side positioning portions each engaged with the base-side positioning portion. One of the base-side positioning portion and the board-side positioning portion includes a pin extending substantially perpendicular to the bottom wall, and another includes a hole into which the pin is fitted.Type: ApplicationFiled: March 13, 2023Publication date: March 21, 2024Inventors: Hiroshi Minami, Shigeru Juman, Kouichi Toukairin, Yasuhiko Kato, Hirofumi Kuribara, Kenji Mizuochi
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Publication number: 20230420003Abstract: According to one embodiment, a disk device includes rotatable magnetic disks, a first actuator assembly rotatably supported on a pivot through a first bearing unit, a second actuator assembly rotatably supported on the pivot through a second bearing unit and provided side by side with the first actuator assembly in an axial direction of the pivot, and a filter unit provided between the magnetic disks and the first and second actuator assemblies. The filter unit includes a holder including a shielding portion facing a boundary portion between the first actuator assembly and the second actuator assembly and a ventilation opening provided at a position spaced apart from the boundary portion in the axial direction, and a filter held by the holder and facing the ventilation opening.Type: ApplicationFiled: March 6, 2023Publication date: December 28, 2023Inventor: Hirofumi KURIBARA
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Patent number: 11783868Abstract: According to one embodiment, a disk device includes a recording medium of a disk form, a magnetic head, a housing, and a first protective member made of a resin. The recording medium includes a recording layer. The magnetic head is configured to read/write information from/to the recording medium. The housing includes a base provided with an inner chamber in which the recording medium and the magnetic head are accommodated, a cover that covers the inner chamber, and a welded part at which the base and the cover are welded to each other. The first protective member is located outside the housing, to cover at least part of the welded part.Type: GrantFiled: September 28, 2022Date of Patent: October 10, 2023Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage CorporationInventors: Naoto Akatsuka, Yoshinori Sato, Hideaki Kamezawa, Hirofumi Kuribara
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Publication number: 20230306999Abstract: According to one embodiment, a disk device includes a magnetic disk and a rotary unit. The magnetic disk is rotatable about a first rotation axis extending in the first direction. The rotary unit includes a rotary member, a bearing, and a first filter. The bearing contains a lubricant and rotatably supports the rotary member about a second rotation axis. The first filter captures at least one component contained in the lubricant. The rotary member is provided with a hole and a first communication port. The hole extends along the second rotation axis to accommodate the bearing. The first communication port extends in a direction intersecting the second rotation axis to allow the hole to be in communication with an outside of the rotary member. The first filter is disposed in the first communication port or covers the first communication port.Type: ApplicationFiled: September 9, 2022Publication date: September 28, 2023Inventors: Kouichi TOUKAIRIN, Kenji MIZUOCHI, Hirofumi KURIBARA, Hiroshi MINAMI, Yasuhiko KATO, Yuya KINUGAWA
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Publication number: 20230036546Abstract: According to one embodiment, a disk device includes a recording medium of a disk form, a magnetic head, a housing, and a first protective member made of a resin. The recording medium includes a recording layer. The magnetic head is configured to read/write information from/to the recording medium. The housing includes a base provided with an inner chamber in which the recording medium and the magnetic head are accommodated, a cover that covers the inner chamber, and a welded part at which the base and the cover are welded to each other. The first protective member is located outside the housing, to cover at least part of the welded part.Type: ApplicationFiled: September 28, 2022Publication date: February 2, 2023Inventors: Naoto Akatsuka, Yoshinori Sato, Hideaki Kamezawa, Hirofumi Kuribara
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Patent number: 11488637Abstract: According to one embodiment, a disk device includes a recording medium of a disk form, a magnetic head, a housing, and a first protective member made of a resin. The recording medium includes a recording layer. The magnetic head is configured to read/write information from/to the recording medium. The housing includes a base provided with an inner chamber in which the recording medium and the magnetic head are accommodated, a cover that covers the inner chamber, and a welded part at which the base and the cover are welded to each other. The first protective member is located outside the housing, to cover at least part of the welded part.Type: GrantFiled: March 11, 2021Date of Patent: November 1, 2022Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Naoto Akatsuka, Yoshinori Sato, Hideaki Kamezawa, Hirofumi Kuribara
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Publication number: 20220084558Abstract: According to one embodiment, a disk device includes a recording medium of a disk form, a magnetic head, a housing, and a first protective member made of a resin. The recording medium includes a recording layer. The magnetic head is configured to read/write information from/to the recording medium. The housing includes a base provided with an inner chamber in which the recording medium and the magnetic head are accommodated, a cover that covers the inner chamber, and a welded part at which the base and the cover are welded to each other. The first protective member is located outside the housing, to cover at least part of the welded part.Type: ApplicationFiled: March 11, 2021Publication date: March 17, 2022Inventors: Naoto Akatsuka, Yoshinori Sato, Hideaki Kamezawa, Hirofumi Kuribara
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Patent number: 10186289Abstract: According to one embodiment, a stopper of a disk device, to regulate movement of movable member of a disk device, includes a fixing member to be fixed to a supporter of the disk device, and a cushioning member formed of a rubber and attached to the fixing member. The cushioning member includes a contact surface which contacts the fixing member, a first contact surface which can contact the supporter of the disk device, and a second contact surface which can contact a movable member in the disk device, the first contact surface has a first surface adhesive force based on adhesion of the rubber, and the second contact surface is subjected to a non-adhesive surface treatment and has a second surface adhesive force which is less than the first surface adhesive force.Type: GrantFiled: April 10, 2018Date of Patent: January 22, 2019Assignee: Kabushiki Kaisha ToshibaInventor: Hirofumi Kuribara
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Publication number: 20180226090Abstract: According to one embodiment, a stopper of a disk device includes a fixing member to be fixed to a supporter of the disk device, and a cushioning member formed of a fluorine rubber and attached to the fixing member. The cushioning member includes a contact surface which contacts the fixing member, a first contact surface which can contact the supporter of the disk device, and a second contact surface which can contact a movable member in the disk device, the first contact surface has a first surface adhesive force based on adhesion of the fluorine rubber, and the second contact surface is subjected to a non-adhesive surface treatment and has a second surface adhesive force which is less than or equal to 1/20 the first surface adhesive force.Type: ApplicationFiled: April 10, 2018Publication date: August 9, 2018Inventor: Hirofumi Kuribara
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Publication number: 20180158477Abstract: According to one embodiment, a stopper of a disk device includes a fixing member to be fixed to a supporter of the disk device, and a cushioning member formed of a fluorine rubber and attached to the fixing member. The cushioning member includes a contact surface which contacts the fixing member, a first contact surface which can contact the supporter of the disk device, and a second contact surface which can contact a movable member in the disk device, the first contact surface has a first surface adhesive force based on adhesion of the fluorine rubber, and the second contact surface is subjected to a non-adhesive surface treatment and has a second surface adhesive force which is less than or equal to 1/20 the first surface adhesive force.Type: ApplicationFiled: March 16, 2017Publication date: June 7, 2018Inventor: Hirofumi Kuribara
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Patent number: 9990948Abstract: According to one embodiment, a stopper of a disk device includes a fixing member to be fixed to a supporter of the disk device, and a cushioning member formed of a fluorine rubber and attached to the fixing member. The cushioning member includes a contact surface which contacts the fixing member, a first contact surface which can contact the supporter of the disk device, and a second contact surface which can contact a movable member in the disk device, the first contact surface has a first surface adhesive force based on adhesion of the fluorine rubber, and the second contact surface is subjected to a non-adhesive surface treatment and has a second surface adhesive force which is less than or equal to 1/20 the first surface adhesive force.Type: GrantFiled: March 16, 2017Date of Patent: June 5, 2018Assignee: Kabushiki Kaisha ToshibaInventor: Hirofumi Kuribara
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Patent number: 8885292Abstract: According to one embodiment, a disk device includes a disk recording medium, a drive motor, an actuator, a housing which accommodates the recording medium, the drive motor, and the actuator, a printed circuit board opposed to an outer surface of the housing, and an insulating sheet interposed between the printed circuit board and the outer surface of the housing. The insulating sheet has rigidity and elasticity and includes a convex portion. The convex portion has a height not smaller than a clearance between the printed circuit board and the outer surface of the housing and is sandwiched between the printed circuit board and the outer surface of the housing.Type: GrantFiled: April 11, 2014Date of Patent: November 11, 2014Assignee: Kabushiki Kaisha ToshibaInventor: Hirofumi Kuribara
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Publication number: 20090323221Abstract: According to one embodiment, a head stack assembly includes stack members stacked on a bearing unit, a suspension and a head on one of the stack members, and an elastic member being between the stack members to damp vibration when there is the vibration which is transmitted from the bearing unit to the stack members.Type: ApplicationFiled: May 28, 2009Publication date: December 31, 2009Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Hirofumi Kuribara