Patents by Inventor Kazutaka Tanaka
Kazutaka Tanaka 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: 20240052915Abstract: A ball screw device has: a screw shaft rotationally moving during use, a nut having a protruding non-rotating side engaging portion at an end portion on one side in an axial direction, the nut linearly moving during use, balls arranged between a shaft-side and nut-side grooves, and a driving member fixed to the screw shaft having an arc-shaped rotating-side engaging groove portion into which the non-rotating side engaging portion can be inserted in the axial direction, and which can be engaged with the non-rotating side engaging portion in a circumferential direction.Type: ApplicationFiled: June 22, 2022Publication date: February 15, 2024Applicant: NSK LTD.Inventors: Ryo SEGAWA, Kazutaka TANAKA
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Publication number: 20220223438Abstract: The object of the technique disclosed in this specification is to prevent or reduce the occurrence of chipping of a ceramic tubular member. A holding device is a device that includes a plate-like member, a tubular member, and a connecting member and holds an object on a holding surface of the plate-like member. The tubular member is made of ceramic and is joined to a second surface of the plate-like member at an end of the tubular member on one side in a first direction, which is perpendicular to the holding surface. The tubular member has, at an end thereof on the other side in the first direction, a flange portion having a first through-hole. The connecting member is disposed on the other side of the tubular member in the first direction and has, in a third surface, which is an end face of the connecting member on one side in the first direction, a hole into which a fastening member inserted through the first through-hole in the flange portion is to be screwed.Type: ApplicationFiled: December 10, 2020Publication date: July 14, 2022Inventors: Takahisa KOMATSU, Kazutaka TANAKA
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Patent number: 10963548Abstract: An information acquisition device and method. The information acquisition device includes a first control circuitry. The first control circuitry is configured to acquire user information including a user's voiceprint, and a user name indicated by the user's voiceprint, based on an authentication audio data acquired in a state where functions related to an information acquisition are restricted, execute a user authentication to cancel the restrictions on the information acquisition when the user's voiceprint agrees with a registered user's voiceprint which is a voiceprint of a preliminarily registered user, and the user name agrees with a registered user name indicated by the registered user's voiceprint, perform the information acquisition after the user authentication is executed, and generate an authenticated data so that the information acquired by the information acquisition is associated with the user name.Type: GrantFiled: October 10, 2018Date of Patent: March 30, 2021Assignee: OLYMPUS CORPORATIONInventors: Yutaka Shibata, Kazutaka Tanaka, Yuichi Ito
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Patent number: 10783903Abstract: A sound collection apparatus includes: a sound collection unit including a microphone configured to collect sound; a noise determination unit configured to determine noise in dictation based on voice collected by the sound collection unit; and a presentation unit configured to perform presentation based on a determination result by the noise determination unit. With this configuration, presentation is performed to indicate environmental noise at sound collection for dictation, which leads to improved efficiency of dictation work.Type: GrantFiled: May 2, 2018Date of Patent: September 22, 2020Assignee: OLYMPUS CORPORATIONInventors: Kazutaka Tanaka, Osamu Nonaka, Kazuhiko Osa
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Patent number: 10626501Abstract: A heating device includes a holding member having a resistive heating element, a columnar support member joined to the holding member, power receiving electrodes connected to the resistive heating element, and an electrode terminal unit disposed in each of through holes in the columnar support member. Each of the electrode terminal units includes a first columnar member having one end portion connected to the power receiving electrode and the other end portion connected to a metal stranded wire, and a second columnar member having an end portion connected to the metal stranded wire. A columnar member assembly having a portion of the first columnar member and a portion of the second columnar member includes a general portion and a large-diameter portion. The distance between the large-diameter portion and an inner peripheral surface of the through hole is smaller than the distance between the general portion and the inner peripheral surface.Type: GrantFiled: September 15, 2017Date of Patent: April 21, 2020Assignee: NGK SPARK PLUG CO., LTD.Inventors: Jun Kurano, Kazutaka Tanaka
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Patent number: 10480635Abstract: A rotation transmission device having a high torque measurement resolution is provided.Type: GrantFiled: February 20, 2017Date of Patent: November 19, 2019Assignee: NSK Ltd.Inventors: Yasuyuki Matsuda, Daisuke Gunji, Masafumi Hikida, Kazutaka Tanaka, Tooru Ueda, Tetsu Takehara, Tomoharu Saito, Hiroyasu Yoshioka, Yuka Kaneko
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Patent number: 10309501Abstract: A sun roller of a friction roller-type transmission includes a movable sun roller element (23) capable of moving in an axial direction. Furthermore, the sun roller is provided with a loading cam mechanism which is formed along the circumferential direction of an input shaft (12), the loading cam mechanism having a first cam surface (75), a second cam surface (77) arranged facing the first cam surface (75) and secured to the input shaft (12), rolling elements (63) held between the first and second cam surfaces (75, 77), and an annular holding device (51), and the loading cam mechanism axially displacing the movable sun roller element (23). The holding device (51) has an inside-diameter-surface guiding part (81) for positioning the holding device relative to the input shaft by being fitted over the input shaft, the guiding part being provided to the inside diameter surface.Type: GrantFiled: March 25, 2015Date of Patent: June 4, 2019Assignee: NSK LTD.Inventors: Hiroyasu Yoshioka, Yasuyuki Matsuda, Kazutaka Tanaka, Takashi Imanishi
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Publication number: 20190114405Abstract: According to an aspect of the invention, an information acquisition device includes a first control circuitry. The first control circuitry is configured to acquire a user information including a user's voiceprint, and a user name indicated by the user's voiceprint, based on an authentication audio data acquired in a state where functions related to an information acquisition are restricted, execute a user authentication to cancel the restrictions on the information acquisition when the user's voiceprint agrees with a registered user's voiceprint which is a voiceprint of a preliminarily registered user, and the user name agrees with a registered user name indicated by the registered user's voiceprint, perform the information acquisition after the user authentication is executed, and generate an authenticated data so that the information acquired by the information acquisition is associated with the user name.Type: ApplicationFiled: October 10, 2018Publication date: April 18, 2019Applicant: OLYMPUS CORPORATIONInventors: Yutaka SHIBATA, Kazutaka TANAKA, Yuichi ITO
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Publication number: 20180330742Abstract: A speech acquisition device, comprising a microphone for converting speech to voice data, and a sound quality adjustment circuit that adjusts sound quality of the voice data, wherein the sound quality adjustment circuit performs different sound quality adjustment in a case where a transcript is created using speech recognition and in a case where a transcript is created by a person listening to speech.Type: ApplicationFiled: May 2, 2018Publication date: November 15, 2018Applicant: OLYMPUS CORPORATIONInventor: Kazutaka TANAKA
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Publication number: 20180322896Abstract: A sound collection apparatus includes: a sound collection unit including a microphone configured to collect sound; a noise determination unit configured to determine noise in dictation based on voice collected by the sound collection unit; and a presentation unit configured to perform presentation based on a determination result by the noise determination unit. With this configuration, presentation is performed to indicate environmental noise at sound collection for dictation, which leads to improved efficiency of dictation work.Type: ApplicationFiled: May 2, 2018Publication date: November 8, 2018Applicant: OLYMPUS CORPORATIONInventors: Kazutaka TANAKA, Osamu NONAKA, Kazuhiko OSA
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Publication number: 20180087153Abstract: A heating device includes a holding member having a resistive heating element, a columnar support member joined to the holding member, power receiving electrodes connected to the resistive heating element, and an electrode terminal unit disposed in each of through holes in the columnar support member. Each of the electrode terminal units includes a first columnar member having one end portion connected to the power receiving electrode and the other end portion connected to a metal stranded wire, and a second columnar member having an end portion connected to the metal stranded wire. A columnar member assembly having a portion of the first columnar member and a portion of the second columnar member includes a general portion and a large-diameter portion. The distance between the large-diameter portion and an inner peripheral surface of the through hole is smaller than the distance between the general portion and the inner peripheral surface.Type: ApplicationFiled: September 15, 2017Publication date: March 29, 2018Inventors: Jun KURANO, Kazutaka TANAKA
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Patent number: 9845848Abstract: A friction roller type reduction gear includes a first sun roller so mounted on an input shaft movably in the axial direction of the input shaft, a plurality of first cam grooves formed in the end face of the first sun roller, a cam plate so mounted on the input shaft as is opposed to the first cam groove side of the first sun roller, a plurality of second cam grooves so formed in the cam plate as are opposed to the first cam grooves, rolling elements interposed between the first and second cam grooves, and a cage for holding the rolling elements rollably, while a pitch circle diameter of the position for holding the rolling elements is different from pitch circle diameter of the first and second cam grooves.Type: GrantFiled: September 26, 2014Date of Patent: December 19, 2017Assignee: NSK LTD.Inventors: Kazutaka Tanaka, Yasuyuki Matsuda
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Publication number: 20170227111Abstract: A rotation transmission device having a high torque measurement resolution is provided.Type: ApplicationFiled: February 20, 2017Publication date: August 10, 2017Inventors: Yasuyuki MATSUDA, Daisuke Gunji, Masafumi Hikida, Kazutaka Tanaka, Tooru Ueda, Tetsu Takehara, Tomoharu Saito, Hiroyasu Yoshioka, Yuka Kaneko
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Publication number: 20170191552Abstract: A sun roller of a friction roller-type transmission includes a movable sun roller element (23) capable of moving in an axial direction. Furthermore, the sun roller is provided with a loading cam mechanism which is formed along the circumferential direction of an input shaft (12), the loading cam mechanism having a first cam surface (75), a second cam surface (77) arranged facing the first cam surface (75) and secured to the input shaft (12), rolling elements (63) held between the first and second cam surfaces (75, 77), and an annular holding device (51), and the loading cam mechanism axially displacing the movable sun roller element (23). The holding device (51) has an inside-diameter-surface guiding part (81) for positioning the holding device relative to the input shaft by being fitted over the input shaft, the guiding part being provided to the inside diameter surface.Type: ApplicationFiled: March 25, 2015Publication date: July 6, 2017Applicant: NSK LTD.Inventors: Hiroyasu YOSHIOKA, Yasuyuki MATSUDA, Kazutaka TANAKA, Takashi IMANISHI
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Patent number: 9625332Abstract: In order to implement a structure capable of improving the resolution of torque measurement while preventing the plastic deformation of a torsion bar (15), an input-side stopper (61) having an uneven shape (gear shape) in the circumferential direction is provided in a portion of an input-side rotating body (55) that includes an input shaft (13) and an input gear (7), and an output-side stopper (63) having an uneven shape (gear shape) in the circumferential direction is provided in a portion of an output-side rotating body (56) that includes an output shaft (14) and an output gear (8). The input-side stopper (61) and the output-side stopper (63) are combined so as to be engaged to be able to transmit torque only when the torsional angle within the elastic range of the torsion bar (15) reaches a predetermined amount.Type: GrantFiled: September 3, 2014Date of Patent: April 18, 2017Assignee: NSK Ltd.Inventors: Tomoharu Saito, Yasuyuki Matsuda, Daisuke Gunji, Masafumi Hikida, Kazutaka Tanaka, Tohru Ueda, Yuka Kaneko, Tetsu Takehara, Hiroyasu Yoshioka
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Patent number: 9482323Abstract: Construction of a friction roller reducer is achieved wherein displacement of intermediate rollers due to the change in thickness in the axial direction of loading cam apparatuses can be performed smoothly, and excellent transmission efficiency can be obtained. Long guide holes that are long in the radial direction of a sun roller and ring-shaped roller are provided in guide blocks that are fastened to a support frame for supporting the end sections of rotation shafts of intermediate rollers. The outer rings of ball bearings, of which the inner rings are fitted around and fastened to the outside of the end sections of the rotation shafts, engage with the long guide holes so as to be able to displace in the radial direction of the sun roller and the ring-shaped roller.Type: GrantFiled: March 9, 2012Date of Patent: November 1, 2016Assignee: NSK, LTD.Inventors: Kazutaka Tanaka, Yasuyuki Matsuda, Takashi Imanishi, Eiji Inoue, Hiroyasu Yoshioka, Tsutomu Hibi
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Publication number: 20160252168Abstract: A friction roller type reduction gear includes a first sun roller so mounted on an input shaft movably in the axial direction of the input shaft, a plurality of first cam grooves formed in the end face of the first sun roller, a cam plate so mounted on the input shaft as is opposed to the first cam groove side of the first sun roller, a plurality of second cam grooves so formed in the cam plate as are opposed to the first cam grooves, rolling elements interposed between the first and second cam grooves, and a cage for holding the rolling elements rollably, while a pitch circle diameter of the position for holding the rolling elements is different from pitch circle diameter of the first and second cam grooves.Type: ApplicationFiled: September 26, 2014Publication date: September 1, 2016Applicant: NSK LTD.Inventors: Kazutaka TANAKA, Yasuyuki MATSUDA
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Publication number: 20160195442Abstract: In order to implement a structure capable of improving the resolution of torque measurement while preventing the plastic deformation of a torsion bar (15), an input-side stopper (61) having an uneven shape (gear shape) in the circumferential direction is provided in a portion of an input-side rotating body (55) that includes an input shaft (13) and an input gear (7), and an output-side stopper (63) having an uneven shape (gear shape) in the circumferential direction is provided in a portion of an output-side rotating body (56) that includes an output shaft (14) and an output gear (8). The input-side stopper (61) and the output-side stopper (63) are combined so as to be engaged to be able to transmit torque only when the torsional angle within the elastic range of the torsion bar (15) reaches a predetermined amount.Type: ApplicationFiled: September 3, 2014Publication date: July 7, 2016Inventors: Tomoharu SAITO, Yasuyuki MATSUDA, Daisuke GUNJI, Masafumi HIKIDA, Kazutaka TANAKA, Tohru UEDA, Yuka KANEKO, Tetsu TAKEHARA, Hiroyasu YOSHIOKA
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Publication number: 20160195183Abstract: A rotation transmission device having a high torque measurement resolution is provided.Type: ApplicationFiled: November 8, 2013Publication date: July 7, 2016Inventors: Yasuyuki MATSUDA, Daisuke Gunji, Masafumi Hikida, Kazutaka Tanaka, Tooru Ueda, Tetsu Takehara, Tomoharu Saito, Hiroyasu Yoshioka, Yuka Kaneko
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Patent number: 9120370Abstract: A drive apparatus for an electric automobile in which a planetary gear transmission 12 is assembled for which it is possible to lengthen the traveling distance per one electric charge, and thus improve the convenience of the electric automobile. A planetary gear transmission 12 comprises a first single-pinion planetary gear mechanism 16 and a second double-pinion planetary gear mechanism 17, and after changing the power from first and second electric motors 10, 11 by a desired gear ratio, transmits the power to a driven-side rotating shaft 15. A one-way clutch 18 is provided between a first carrier 19 and a portion 27 that is fastened to the vehicle so as to allow the first carrier 19 to rotate in a specified direction and prevent the first carrier 19 from rotating in a direction opposite the specified direction.Type: GrantFiled: February 29, 2012Date of Patent: September 1, 2015Assignee: NSK LTD.Inventors: Masafumi Hikida, Yasuyuki Matsuda, Kazutaka Tanaka, Daisuke Gunji