Patents by Inventor Yasuhiro Terasaki
Yasuhiro Terasaki 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: 11303783Abstract: A drive apparatus includes an actuator, an engaging body configured to frictionally engage the actuator, and an optical-path-changing member configured so as to be magnetically linked to the engaging body, and configured to change the direction of an optical path. The actuator causes the engaging body to move in a first direction and in a second direction opposite to the first direction. The optical-path-changing member moves due to being biased by the engaging body when the engaging body has moved in the first direction, and the optical-path-changing member moves following movement of the engaging body due to magnetic attraction when the engaging body has moved in the second direction.Type: GrantFiled: February 19, 2019Date of Patent: April 12, 2022Assignee: TDK CORPORATIONInventors: Yasuhiro Terasaki, Naoki Yusa
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Publication number: 20190260913Abstract: A drive apparatus includes an actuator, an engaging body configured to frictionally engage the actuator, and an optical-path-changing member configured so as to be magnetically linked to the engaging body, and configured to change the direction of an optical path. The actuator causes the engaging body to move in a first direction and in a second direction opposite to the first direction. The optical-path-changing member moves due to being biased by the engaging body when the engaging body has moved in the first direction, and the optical-path-changing member moves following movement of the engaging body due to magnetic attraction when the engaging body has moved in the second direction.Type: ApplicationFiled: February 19, 2019Publication date: August 22, 2019Applicant: TDK CORPORATIONInventors: Yasuhiro TERASAKI, Naoki YUSA
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Patent number: 10272789Abstract: A wireless power supply system is a wireless power supply system provided with a travel lane for wirelessly transmitting power to a moving body and includes a power transmitting coil that is disposed such that the axial direction of the coil is substantially parallel to the width direction of the travel lane, and electromagnetic shielding walls that are disposed on the respective sides of the travel lane in the extension direction of the travel lane.Type: GrantFiled: May 14, 2015Date of Patent: April 30, 2019Assignee: TDK CORPORATIONInventors: Noritaka Chiyo, Yasuhiro Terasaki, Mitsunari Suzuki
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Patent number: 10014105Abstract: A coil unit includes a non-magnetic conductive plate which is disposed along an axis of a coil, and a magnetic body. The magnetic body includes a first portion which is positioned in an outer side than an outline of one side of the conductive plate in the axis direction of the coil, and a second portion which is positioned in an outer side than an outline of the other side of the conductive plate in the axis direction of the coil. When viewing from the axis direction of the coil, the first and second portions are positioned on a side of the conductive plate where is opposite to a side which faces the coil.Type: GrantFiled: March 18, 2015Date of Patent: July 3, 2018Assignee: TDK CORPORATIONInventors: Noritaka Chiyo, Tetsuya Nishiyama, Yasuhiro Terasaki, Mitsunari Suzuki
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Patent number: 10002708Abstract: A coil unit includes a non-magnetic conductive plate which is disposed in an arrangement direction of first and second coils have reverse winding direction to each other, and a magnetic body. The magnetic body includes a first portion which is positioned in an outer side than an outline of one side of the conductive plate in the arrangement direction of the first and second coils, and a second portion which is positioned in an outer side than an outline of the other side of the conductive plate in the arrangement direction of the first and second coils. When viewing from the arrangement direction of the first and second coils, the first and second portions are positioned on a side of the conductive plate where is opposite to a side which faces the first and second coils.Type: GrantFiled: March 18, 2015Date of Patent: June 19, 2018Assignee: TDK CORPORATIONInventors: Noritaka Chiyo, Tetsuya Nishiyama, Yasuhiro Terasaki, Mitsunari Suzuki
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Patent number: 9984817Abstract: A coil for wireless power transmission in which a plurality of magnetic connection members are disposed in a manner which magnetically connects coils among a plurality of coils, which are adjacent with one or more coils therebetween, and does not magnetically connect coils among the plurality of coils, which are next to each other, and in adjacent coils among the plurality of coils, which are magnetically connected, directions of magnetic fields that are generated when a current flows through the coils are mutually inverse directions.Type: GrantFiled: March 25, 2015Date of Patent: May 29, 2018Assignee: TDK CORPORATIONInventors: Noritaka Chiyo, Yasuhiro Terasaki
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Patent number: 9728325Abstract: A power feeding coil unit includes a power feeding coil, and first and second auxiliary coils located outside of the region defined by a wire of the power feeding coil. The axis of the first auxiliary coil and the axis of the second auxiliary coil are substantially perpendicular to the axis of the power feeding coil. The power feeding coil and the first and second auxiliary coils simultaneously generate respective magnetic fluxes, each of which interlinks the corresponding one of the power feeding coil and the first and second auxiliary coils in a direction from the center to the outside of the power feeding coil unit.Type: GrantFiled: November 20, 2014Date of Patent: August 8, 2017Assignee: TDK CORPORATIONInventors: Noritaka Chiyo, Yasuhiro Terasaki, Tetsuya Nishiyama
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Publication number: 20170043668Abstract: A wireless power supply system is a wireless power supply system provided with a travel lane for wirelessly transmitting power to a moving body and includes a power transmitting coil that is disposed such that the axial direction of the coil is substantially parallel to the width direction of the travel lane, and electromagnetic shielding walls that are disposed on the respective sides of the travel lane in the extension direction of the travel lane.Type: ApplicationFiled: May 14, 2015Publication date: February 16, 2017Applicant: TDK CORPORATIONInventors: Noritaka CHIYO, Yasuhiro TERASAKI, Mitsunari SUZUKI
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Patent number: 9570229Abstract: A power feeding coil unit includes a power feeding coil, and first and second auxiliary coils located outside of the region defined by a wire of the power feeding coil. The axis of the first auxiliary coil and the axis of the second auxiliary coil are substantially perpendicular to the axis of the power feeding coil. The power feeding coil and the first and second auxiliary coils simultaneously generate respective magnetic fluxes, each of which interlinks the corresponding one of the power feeding coil and the first and second auxiliary coils in a direction from the center to the outside of the power feeding coil unit.Type: GrantFiled: November 20, 2014Date of Patent: February 14, 2017Assignee: TDK CORPORATIONInventors: Noritaka Chiyo, Yasuhiro Terasaki, Tetsuya Nishiyama
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Publication number: 20160284466Abstract: A coil which maintains a balance of a parasitic capacitance and has a structure that can be multilayered. The coil is stacked with a structure which includes winding wire portions formed of a wire wound for several turns in a plane in each layer, wherein winding wire portions in each layer include a first winding portion formed by performing a single turn of winding in each layer in a same winding direction from a bottom layer to an uppermost layer, and a second winding portion formed by performing a single turn of winding in each layer in a same winding direction from the uppermost layer to the bottom layer, and the winding directions of the first and second winding portions are identical to each other and the first winding portion and the second winding portion are joined in the uppermost layer or the bottom layer.Type: ApplicationFiled: June 9, 2016Publication date: September 29, 2016Applicant: TDK CORPORATIONInventors: Mitsunari SUZUKI, Takeshi KAMONO, Yasuhiro TERASAKI, Noritaka CHIYO
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Patent number: 9390851Abstract: A coil which maintains a balance of a parasitic capacitance and has a structure that can be multilayered. The coil is stacked with a structure which includes winding wire portions formed of a wire wound for several turns in a plane in each layer, wherein winding wire portions in each layer include a first winding portion formed by performing a single turn of winding in each layer in a same winding direction from a bottom layer to an uppermost layer, and a second winding portion formed by performing a single turn of winding in each layer in a same winding direction from the uppermost layer to the bottom layer, and the winding directions of the first and second winding portions are identical to each other and the first winding portion and the second winding portion are joined in the uppermost layer or the bottom layer.Type: GrantFiled: November 26, 2014Date of Patent: July 12, 2016Assignee: TDK CORPORATIONInventors: Mitsunari Suzuki, Takeshi Kamono, Yasuhiro Terasaki, Noritaka Chiyo
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Publication number: 20150279555Abstract: A coil unit includes a non-magnetic conductive plate which is disposed along an axis of a coil, and a magnetic body. The magnetic body includes a first portion which is positioned in an outer side than an outline of one side of the conductive plate in the axis direction of the coil, and a second portion which is positioned in an outer side than an outline of the other side of the conductive plate in the axis direction of the coil. When viewing from the axis direction of the coil, the first and second portions are positioned on a side of the conductive plate where is opposite to a side which faces the coil.Type: ApplicationFiled: March 18, 2015Publication date: October 1, 2015Inventors: Noritaka CHIYO, Tetsuya NISHIYAMA, Yasuhiro TERASAKI, Mitsunari SUZUKI
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Publication number: 20150279556Abstract: A coil unit includes a non-magnetic conductive plate which is disposed in an arrangement direction of first and second coils have reverse winding direction to each other, and a magnetic body. The magnetic body includes a first portion which is positioned in an outer side than an outline of one side of the conductive plate in the arrangement direction of the first and second coils, and a second portion which is positioned in an outer side than an outline of the other side of the conductive plate in the arrangement direction of the first and second coils. When viewing from the arrangement direction of the first and second coils, the first and second portions are positioned on a side of the conductive plate where is opposite to a side which faces the first and second coils.Type: ApplicationFiled: March 18, 2015Publication date: October 1, 2015Inventors: Noritaka CHIYO, Tetsuya NISHIYAMA, Yasuhiro TERASAKI, Mitsunari SUZUKI
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Publication number: 20150279557Abstract: A coil for wireless power transmission in which a plurality of magnetic connection members are disposed in a manner which magnetically connects coils among a plurality of coils, which are adjacent with one or more coils therebetween, and does not magnetically connect coils among the plurality of coils, which are next to each other, and in adjacent coils among the plurality of coils, which are magnetically connected, directions of magnetic fields that are generated when a current flows through the coils are mutually inverse directions.Type: ApplicationFiled: March 25, 2015Publication date: October 1, 2015Inventors: Noritaka CHIYO, Yasuhiro TERASAKI
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Publication number: 20150145343Abstract: A power feeding coil unit includes a power feeding coil, and first and second auxiliary coils located outside of the region defined by a wire of the power feeding coil. The axis of the first auxiliary coil and the axis of the second auxiliary coil are substantially perpendicular to the axis of the power feeding coil. The power feeding coil and the first and second auxiliary coils simultaneously generate respective magnetic fluxes, each of which interlinks the corresponding one of the power feeding coil and the first and second auxiliary coils in a direction from the center to the outside of the power feeding coil unit.Type: ApplicationFiled: November 20, 2014Publication date: May 28, 2015Inventors: Noritaka CHIYO, Yasuhiro TERASAKI, Tetsuya NISHIYAMA
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Publication number: 20150145630Abstract: A coil which maintains a balance of a parasitic capacitance and has a structure that can be multilayered. The coil is stacked with a structure which includes winding wire portions formed of a wire wound for several turns in a plane in each layer, wherein winding wire portions in each layer include a first winding portion formed by performing a single turn of winding in each layer in a same winding direction from a bottom layer to an uppermost layer, and a second winding portion formed by performing a single turn of winding in each layer in a same winding direction from the uppermost layer to the bottom layer, and the winding directions of the first and second winding portions are identical to each other and the first winding portion and the second winding portion are joined in the uppermost layer or the bottom layer.Type: ApplicationFiled: November 26, 2014Publication date: May 28, 2015Inventors: Mitsunari SUZUKI, Takeshi KAMONO, Yasuhiro TERASAKI, Noritaka CHIYO
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Patent number: 7468851Abstract: The invention provides an optical head device in which the influence of mechanical vibration generated at resonance frequencies of high orders (second and higher orders) can be eliminated and an optical recording/reproducing apparatus utilizing the same. Sidewalls are formed from both ends of a sidewall constituting the top side of a trapezoidal contour of a lens holder portion, the sidewalls extending in the form of a fan to define a predetermined angle between them. A damping system includes a weight in the form of a metal thin plate and a visco-elastic adhesive for bonding the weight to the sidewalls. The visco-elastic adhesive transfers vibration of the lens holder in the direction of an optical axis of an objective lens to the weight and has a viscous damping property which damps vibration of the weight in the direction of the optical axis.Type: GrantFiled: June 13, 2006Date of Patent: December 23, 2008Assignees: TDK Corporation, TDK Taiwan CorporationInventors: Masara Uno, Yasuhiro Terasaki, Nobuo Uekusa, Yi Lang Chan
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Publication number: 20070011694Abstract: The invention provides an optical head device in which the influence of mechanical vibration generated at resonance frequencies of high orders (second and higher orders) can be eliminated and an optical recording/reproducing apparatus utilizing the same. Sidewalls are formed from both ends of a sidewall constituting the top side of a trapezoidal contour of a lens holder portion, the sidewalls extending in the form of a fan to define a predetermined angle between them. A damping system includes a weight in the form of a metal thin plate and a visco-elastic adhesive for bonding the weight to the sidewalls. The visco-elastic adhesive transfers vibration of the lens holder in the direction of an optical axis of an objective lens to the weight and has a viscous damping property which damps vibration of the weight in the direction of the optical axis.Type: ApplicationFiled: June 13, 2006Publication date: January 11, 2007Applicants: TDK CORPORATION, TDK TAIWAN CORP.Inventors: Masaru Uno, Yasuhiro Terasaki, Nobuo Uekusa, Yi Chan
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Patent number: 6285517Abstract: An objective lens driver in which a movable portion 1 with an objective lens 11 is supported on a fixed portion by two groups of elastic supporting members each being horizontally bent which are disposed on both sides of the objective lens 11 such that each group of elastic supporting members are vertically arranged on each side of the objective lens, and the upper elastic supporting members of the groups of elastic supporting members are spaced from each other horizontally, is improved such that each group of elastic supporting members vertically arranged on each side of the objective lens are not parallel to each other. Further, damping material are fixedly disposed between both ends of the elastic supporting members and stuck onto the elastic supporting members, and the amount of the damping material on one side of the objective lens is different from that of the damping material on the other side of the objective lens, and a method of manufacturing the objective lens driver.Type: GrantFiled: November 1, 2000Date of Patent: September 4, 2001Assignee: TDK CorporationInventors: Nobuo Uekusa, Yasuhiro Terasaki, Noriyuki Kawano
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Patent number: 6163416Abstract: An objective lens driver in which a movable portion 1 with an objective lens 11 is supported on a fixed portion by two groups of elastic supporting members each being horizontally bent which are disposed on both sides of the objective lens 11 such that each group of elastic supporting members are vertically arranged on each side of the objective lens, and the upper elastic supporting members of the groups of elastic supporting members are spaced from each other horizontally, is improved such that each group of elastic supporting members vertically arranged on each side of the objective lens are not parallel to each other. Further, damping material are fixedly disposed between both ends of the elastic supporting members and stuck onto the elastic supporting members, and the amount of the damping material on one side of the objective lens is different from that of the damping material on the other side of the objective lens, and a method of manufacturing the objective lens driver.Type: GrantFiled: April 23, 1999Date of Patent: December 19, 2000Assignee: TDK CorporationInventors: Nobuo Uekusa, Yasuhiro Terasaki, Noriyuki Kawano