Patents by Inventor Daisuke Yatsushiro
Daisuke Yatsushiro 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: 10718378Abstract: A track member or a movable member constituting a motion guide device includes a rolling part formed of a metal material contacting with a plurality of rolling bodies and forming a rolling body rolling surface a, a mounting part formed of a metal material having a mounting hole for mounting an external member, and a track body or a movable body formed of FRP jointed with the rolling part and the mounting part and forming the track member or the movable member, and the mounting part and the track body or the movable body have joint holes, opened in a direction orthogonal to a lamination direction of FRP reinforced fiber sheets S forming the track body or the movable body at a time of the joint, and can be jointed using jointing means. An external member can be securely mounted to the motion guide device formed of FRP.Type: GrantFiled: August 6, 2019Date of Patent: July 21, 2020Assignee: THK CO., LTD.Inventors: Kazuto Homma, Akimasa Yoshida, Daisuke Yatsushiro, Takuya Iguchi
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Publication number: 20190360570Abstract: A track member or a movable member constituting a motion guide device includes a rolling part formed of a metal material contacting with a plurality of rolling bodies and forming a rolling body rolling surface a, a mounting part formed of a metal material having a mounting hole for mounting an external member, and a track body or a movable body formed of FRP jointed with the rolling part and the mounting part and forming the track member or the movable member, and the mounting part and the track body or the movable body have joint holes, opened in a direction orthogonal to a lamination direction of FRP reinforced fiber sheets S forming the track body or the movable body at a time of the joint, and can be jointed using jointing means. An external member can be securely mounted to the motion guide device formed of FRP.Type: ApplicationFiled: August 6, 2019Publication date: November 28, 2019Applicant: THK CO., LTD.Inventors: Kazuto Homma, Akimasa Yoshida, Daisuke Yatsushiro, Takuya Iguchi
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Patent number: 10415640Abstract: A track member or a movable member constituting a motion guide device includes a rolling part formed of a metal material contacting with a plurality of rolling bodies and forming a rolling body rolling surface a, a mounting part formed of a metal material having a mounting hole for mounting an external member, and a track body or a movable body formed of FRP jointed with the rolling part and the mounting part and forming the track member or the movable member, and the mounting part and the track body or the movable body have joint holes, opened in a direction orthogonal to a lamination direction of FRP reinforced fiber sheets S forming the track body or the movable body at a time of the joint, and can be jointed using jointing means. An external member can be securely mounted to the motion guide device formed of FRP.Type: GrantFiled: November 22, 2016Date of Patent: September 17, 2019Assignee: THK CO., LTD.Inventors: Kazuto Homma, Akimasa Yoshida, Daisuke Yatsushiro, Takuya Iguchi
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Publication number: 20180355959Abstract: A track member or a movable member constituting a motion guide device includes a rolling part formed of a metal material contacting with a plurality of rolling bodies and forming a rolling body rolling surface a, a mounting part formed of a metal material having a mounting hole for mounting an external member, and a track body or a movable body formed of FRP jointed with the rolling part and the mounting part and forming the track member or the movable member, and the mounting part and the track body or the movable body have joint holes, opened in a direction orthogonal to a lamination direction of FRP reinforced fiber sheets S forming the track body or the movable body at a time of the joint, and can be jointed using jointing means. An external member can be securely mounted to the motion guide device formed of FRP.Type: ApplicationFiled: November 22, 2016Publication date: December 13, 2018Applicant: THK CO., LTD.Inventors: Kazuto Homma, Akimasa Yoshida, Daisuke Yatsushiro, Takuya Iguchi
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Patent number: 7870935Abstract: A traction drive power transmission device, where a lubrication oil can be stably and continuously applied for a long period to portions at which rollers and a shaft are in contact with each other, shortage of the lubrication oil does not occur at the contact portions, the lubrication oil is not wasted, and which does not impair work environment by contaminating floor surface etc. A traction drive power transmission device has at least one drive roller (12a), a follower roller (12b), and a circular cylinder-like shaft (11). The shaft (11) is held between the drive roller (12a) and the follower roller (12b). When the drive roller (12a) is rotated, rotational force by the rotation is transmitted to the shaft (11) to drive it in its axial direction. The device has a lubrication oil-delivering portion (20) with application bodies (22-1, 22-2) for applying a lubrication oil only to portions where the shaft (11) is in contact with the drive roller (12a) and the follower roller (12b).Type: GrantFiled: December 26, 2003Date of Patent: January 18, 2011Assignees: THK Co., Ltd., Mitutoyo CorporationInventors: Daisuke Yatsushiro, Takeki Shirai, Hidekazu Michioka, Takahiro Kawaguchi, Haruo Kusakabe, Mitsuru Fukuda, Seiichi Otsubo
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Patent number: 7819584Abstract: A guide apparatus including a track rail and a moving block is free from the possibility of foreign matter entering the moving block through the gaps between the side surfaces of the track rail and the inner side surfaces of the moving block even in an environment where many fine dust particles are flying. A guide apparatus has a track rail and a moving block 20 relatively movably attached to the track rail with rolling elements interposed therebetween. The rolling elements recirculate through rolling element recirculation passages. Foreign matter entry preventing plates 34 are provided so that their respective distal ends longitudinally contact the opposite side surfaces of the track rail to close the gaps between the side surfaces of the track rail and at least the inner side surfaces of skirt portions on both sides of a moving block body 21 and the inner side surfaces of end plates of the moving block 20.Type: GrantFiled: October 5, 2004Date of Patent: October 26, 2010Assignee: THK Co., Ltd.Inventors: Hidekazu Michioka, Daisuke Yatsushiro, Yoshiaki Saito
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Patent number: 7785010Abstract: In order to provide a long-life, highly-reliable guide apparatus which exhibits dustproof performance and prevents intrusion of dust into the moving block in environments where there are lots of fine dust such as gypsum and ceramic powder and where no oil contents or oil contents are not liked, there is provided a guide apparatus having a track rail 11, in which rolling-element raceway grooves 12-1 to 12-4 are formed along a longitudinal direction thereof, and a moving block 20 attached to the track rail by way of a plurality of rolling elements in a relatively-movable manner, wherein an end-face dustproof brush 25, which has a brush member 36 whose tip end contacts a surface of the track rail 11 and which eliminates extraneous matters adhering to the surface of the track rail 11 by means of the brush member 36, is attached to outside of each of the side covers 22 with respect to the direction of relative movement.Type: GrantFiled: November 19, 2004Date of Patent: August 31, 2010Assignee: THK Co., Ltd.Inventors: Hidekazu Michioka, Daisuke Yatsushiro, Tadashi Hirokawa, Yoshiaki Saito
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Patent number: 7500409Abstract: A seal for a ball screw is provided with a foreign material removing member having a hole of a shape corresponding to a sectional shape of a ball screw shaft taken perpendicularly to an axis thereof to prevent a foreign material from invading from an outside of a ball screw nut and a seal member having a hole of a shape corresponding to a sectional shape of the ball screw shaft to retain a lubricant existing inside the ball screw nut. The foreign material removing member and the seal member are mounted to the ball screw shaft, at each of both the axial ends of the nut, while being overlapped to each other in a state that inner peripheral portions of the foreign material removing member and the seal member contact an outer peripheral surface of the ball screw shaft and the ball rolling groove thereof. The foreign material removing member is disposed outside the seal member in the axial direction of the ball screw nut.Type: GrantFiled: May 16, 2005Date of Patent: March 10, 2009Assignee: THK Co., Ltd.Inventors: Daisuke Yatsushiro, Tetsuhiro Nishide
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Patent number: 7430933Abstract: A seal for a ball screw is provided with a foreign material removing member having a hole of a shape corresponding to a sectional shape of a ball screw shaft taken perpendicularly to an axis thereof to prevent a foreign material from invading from an outside of a ball screw nut and a seal member having a hole of a shape corresponding to a sectional shape of the ball screw shaft to retain a lubricant existing inside the ball screw nut. The foreign material removing member and the seal member are mounted to the ball screw shaft, at each of both the axial ends of the nut, while being overlapped to each other in a state that inner peripheral portions of the foreign material removing member and the seal member contact an outer peripheral surface of the ball screw shaft and the ball rolling groove thereof. The foreign material removing member is disposed outside the seal member in the axial direction of the ball screw nut.Type: GrantFiled: July 8, 2005Date of Patent: October 7, 2008Assignee: THK Co., Ltd.Inventors: Daisuke Yatsushiro, Tetsuhiro Nishide
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Publication number: 20070269148Abstract: In order to provide a long-life, highly-reliable guide apparatus which exhibits dustproof performance and prevents intrusion of dust into the moving block in environments where there are lots of fine dust such as gypsum and ceramic powder and where no oil contents or oil contents are not liked, there is provided a guide apparatus having a track rail 11, in which rolling-element raceway grooves 12-1 to 12-4 are formed along a longitudinal direction thereof, and a moving block 20 attached to the track rail by way of a plurality of rolling elements in a relatively-movable manner, wherein an end-face dustproof brush 25, which has a brush member 36 whose tip end contacts a surface of the track rail 11 and which eliminates extraneous matters adhering to the surface of the track rail 11 by means of the brush member 36, is attached to outside of each of the side covers 22 with respect to the direction of relative movement.Type: ApplicationFiled: November 19, 2004Publication date: November 22, 2007Applicant: THK CO., LTD.Inventors: Hidekazu Michioka, Daisuke Yatsushiro, Tadashi Hirokawa, Yoshiaki Saito
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Publication number: 20070041671Abstract: A guide apparatus including a track rail and a moving block is free from the possibility of foreign matter entering the moving block through the gaps between the side surfaces of the track rail and the inner side surfaces of the moving block even in an environment where many fine dust particles are flying. A guide apparatus has a track rail and a moving block 20 relatively movably attached to the track rail with rolling elements interposed therebetween. The rolling elements recirculate through rolling element recirculation passages. Foreign matter entry preventing plates 34 are provided so that their respective distal ends longitudinally contact the opposite side surfaces of the track rail to close the gaps between the side surfaces of the track rail and at least the inner side surfaces of skirt portions on both sides of a moving block body 21 and the inner side surfaces of end plates of the moving block 20.Type: ApplicationFiled: October 5, 2004Publication date: February 22, 2007Applicant: THK CO. LTD.Inventors: Hidekazu Michioka, Daisuke Yatsushiro, Yoshiaki Saito
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Publication number: 20060219036Abstract: A hypoid gear device is provided with a backlash eliminating unit arranged between a driven wheel and a driving pinion to be meshed with the driven wheel. The backlash eliminating unit includes a driven pinion mounted on the same shaft as that of the driving pinion so as to be meshed with the driven wheel, and an elastic member urging the driven pinion on the same shaft of the driving pinion in the direction reverse thereto.Type: ApplicationFiled: April 23, 2004Publication date: October 5, 2006Applicant: THK CO., LTD.,Inventors: Hidekazu Michioka, Masahiko Tamano, Masayuki Imamura, Takeki Shirai, Daisuke Yatsushiro
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Publication number: 20060194668Abstract: A traction drive power transmission device, where a lubrication oil can be stably and continuously applied for a long period to portions at which rollers and a shaft are in contact with each other, shortage of the lubrication oil does not occur at the contact portions, the lubrication oil is not wasted, and which does not impair work environment by contaminating floor surface etc. A traction drive power transmission device has at least one drive roller (12a), a follower roller (12b), and a circular cylinder-like shaft (11). The shaft (11) is held between the drive roller (12a) and the follower roller (12b). When the drive roller (12a) is rotated, rotational force by the rotation is transmitted to the shaft (11) to drive it in its axial direction. The device has a lubrication oil-delivering portion (20) with application bodies (22-1, 22-2) for applying a lubrication oil only to portions where the shaft (11) is in contact with the drive roller (12a) and the follower roller (12b).Type: ApplicationFiled: December 26, 2003Publication date: August 31, 2006Inventors: Daisuke Yatsushiro, Takeki Shirai, Hidekazu Michioka, Takahiro Kawaguchi
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Publication number: 20060096397Abstract: A ball screw having a lubricant oil feeder constructed so as not to allow the lubricating oil in a ball rolling groove to leak outside. A ball screw having a lubricating oil feeding mechanism installed at the shaft end of a nut, and a seal disposed outside the same, wherein the lubricating oil feeding mechanism has an application with its front end held in slide contact with the ball rolling groove, is being arranged that the lubricating oil is fed to the ball rolling groove through the applicator, and an oil lip with its front end held in slide contact with the surface of the ball rolling groove is installed in the vicinity of the applicators with a predetermined spacing defined between the oil lip and the applicator.Type: ApplicationFiled: August 26, 2003Publication date: May 11, 2006Applicant: THK Co., Ltd.Inventors: Hidekazu Michioka, Daisuke Yatsushiro, Masahiko Yoshino
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Publication number: 20050241419Abstract: A seal for a ball screw is provided with a foreign material removing member having a hole of a shape corresponding to a sectional shape of a ball screw shaft taken perpendicularly to an axis thereof to prevent a foreign material from invading from an outside of a ball screw nut and a seal member having a hole of a shape corresponding to a sectional shape of the ball screw shaft to retain a lubricant existing inside the ball screw nut. The foreign material removing member and the seal member are mounted to the ball screw shaft, at each of both the axial ends of the nut, while being overlapped to each other in a state that inner peripheral portions of the foreign material removing member and the seal member contact an outer peripheral surface of the ball screw shaft and the ball rolling groove thereof. The foreign material removing member is disposed outside the seal member in the axial direction of the ball screw nut.Type: ApplicationFiled: July 8, 2005Publication date: November 3, 2005Applicant: THK Co., Ltd.Inventors: Daisuke Yatsushiro, Tetsuhiro Nishide
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Publication number: 20050204836Abstract: A seal for a ball screw is provided with a foreign material removing member having a hole of a shape corresponding to a sectional shape of a ball screw shaft taken perpendicularly to an axis thereof to prevent a foreign material from invading from an outside of a ball screw nut and a seal member having a hole of a shape corresponding to a sectional shape of the ball screw shaft to retain a lubricant existing inside the ball screw nut. The foreign material removing member and the seal member are mounted to the ball screw shaft, at each of both the axial ends of the nut, while being overlapped to each other in a state that inner peripheral portions of the foreign material removing member and the seal member contact an outer peripheral surface of the ball screw shaft and the ball rolling groove thereof. The foreign material removing member is disposed outside the seal member in the axial direction of the ball screw nut.Type: ApplicationFiled: May 16, 2005Publication date: September 22, 2005Applicant: THK CO., LTD.Inventors: Daisuke Yatsushiro, Tetsuhiro Nishide
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Patent number: 6931955Abstract: A seal for a ball screw is provided with a foreign material removing member having a hole of a shape corresponding to a sectional shape of a ball screw shaft taken perpendicularly to an axis thereof to prevent a foreign material from invading from an outside of a ball screw nut and a seal member having a hole of a shape corresponding to a sectional shape of the ball screw shaft to retain a lubricant existing inside the ball screw nut. The foreign material removing member and the seal member are mounted to the ball screw shaft, at each of both the axial ends of the nut, while being overlapped to each other in a state that inner peripheral portions of the foreign material removing member and the seal member contact an outer peripheral surface of the ball screw shaft and the ball rolling groove thereof. The foreign material removing member is disposed outside the seal member in the axial direction of the ball screw nut.Type: GrantFiled: April 1, 2002Date of Patent: August 23, 2005Assignee: THK Co., LTDInventors: Daisuke Yatsushiro, Tetsuhiro Nishide
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Patent number: 6830378Abstract: An object of the invention is to provide a method of manufacturing a rolling element string wherein a smaller rolling element string can be manufactured easily at low cost, and a rolling element string being superior in the tensile strength and the flexural strength even after downsizing can be manufactured.Type: GrantFiled: August 22, 2003Date of Patent: December 14, 2004Assignee: THK Co., Ltd.Inventors: Hidekazu Michioka, Yasuhiro Matsumoto, Hiroshi Nakabayashi, Katsuya Iida, Daisuke Yatsushiro
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Publication number: 20040057640Abstract: An object of the invention is to provide a method of manufacturing a rolling element string wherein a smaller rolling element string can be manufactured easily at low cost, and a rolling element string being superior in the tensile strength and the flexural strength even after downsizing can be manufactured.Type: ApplicationFiled: August 22, 2003Publication date: March 25, 2004Applicant: THK CO., LTDInventors: Hidekazu Michioka, Yasuhiro Matsumoto, Hiroshi Nakabayashi, Katsuya Iida, Daisuke Yatsushiro
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Publication number: 20040029740Abstract: A lubricant supplying device for a guiding apparatus which can control as accurately as possible the amount per unit time of a lubricant to be supplied even when the amount per unit time of the lubricant to be supplied from lubricant accommodating chambers to lubricant coaters is very small, and stably can apply a predetermined amount of the lubricant to the rolling faces of a track shaft and/or a slide member from the lubricant coaters stably for a long period of time even when the feeder is made small in size. The lubricant stored in the lubricant accommodating chambers is lubricating grease which contains 0.05 to 4 wt % of a thickener in lubricating base oil.Type: ApplicationFiled: April 30, 2003Publication date: February 12, 2004Inventors: Daisuke Yatsushiro, Masahiko Yoshino, Mitsuaki Honma