Patents Assigned to Miki Pulley Co., Ltd.
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Patent number: 12021466Abstract: To provide a characteristic evaluation device that can properly evaluate a characteristic of a shaft coupling while considering a delay in a response of a motor, a characteristic evaluation device of a shaft coupling includes: a motor system including a drive motor, a rotation angle sensor configured to acquire a rotation angle of a drive shaft, and a motor control unit configured to control the drive motor based on a torque command; a rotational load connected to a driven shaft; and a processor configured to output the torque command and calculate a frequency response of a gain of an amplitude of an angular velocity ? of the rotation angle, wherein the processor is configured to calculate a characteristic of the shaft coupling based on a response characteristic of the motor system and the frequency response.Type: GrantFiled: August 7, 2020Date of Patent: June 25, 2024Assignees: MIKI PULLEY CO., LTD., NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITYInventors: Ryuta Sato, Makoto Taniyama, Masaharu Hirosawa, Takayuki Satomi, Taichi Sasaki
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Patent number: 11669651Abstract: In the design of a mechanical component for a mechanical device driven by a feedback controlled electric motor, the user is enabled to easily know how the properties of mechanical component affect the generation of abnormal vibrations of the mechanical device. In a design assist apparatus (1), the processor (11) is configured to set a plurality of parameters of a mathematical model of an analysis target component selected from one or more mechanical components (24, 56, 58) forming the mechanical device, compute a pole of a transfer function of the mechanical device associated with one or more vibration modes of the mechanical device according to the parameters, and create a stability determination diagram including an isoline of a real part of the pole of the transfer function.Type: GrantFiled: December 17, 2018Date of Patent: June 6, 2023Assignees: MIKI PULLEY CO., LTD, NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITYInventors: Ryuta Sato, Atsushi Nagao, Takeshi Hashimoto, Taichi Sasaki
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Patent number: 9689436Abstract: In one aspect, a torque limiter may include a roller provided on one end of a lever member that selectively engages an engagement recess. The other end of the lever member is connected to an end of a tension spring to urge the lever member in the direction to engage the one end of the lever member in the engagement recess.Type: GrantFiled: November 5, 2014Date of Patent: June 27, 2017Assignee: Miki Pulley Co., Ltd.Inventors: Katsuhiko Sato, Tomio Watanabe
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Patent number: 9587665Abstract: Provided is a screw fastener provided with the function of a torque limiter which allows a high limit value to be set for the fastening torque without increasing the size thereof or the spring force of the spring member, and is easy to assemble and service. A multiple plate torque limiter is formed by a plurality of drive disk members (50) and a plurality of driven disk members (52) between a first member (10) and a second member (30), and the first member (10) and the second member (30) are detachably joined to each other by a retaining screw (22).Type: GrantFiled: February 9, 2015Date of Patent: March 7, 2017Assignee: Miki Pulley Co., Ltd.Inventors: Tomio Watanabe, Hideo Sato
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Publication number: 20160327100Abstract: Provided is a torque limiter that allows a prescribed torque value to be set with a great freedom. A roller (58) provided on one end of a lever member (54) selectively engages an engagement recess (44), and the other end of the lever member (54) is connected to an end of a tension spring (62) to urge the lever member (54) in the direction to engage the one end of the lever member (54) in the engagement recess (44).Type: ApplicationFiled: November 5, 2014Publication date: November 10, 2016Applicant: Miki Pulley Co., Ltd.Inventors: Katsuhiko SATO, Tomio WATANABE
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Patent number: 9289838Abstract: Disclosed is a guide roller wherein bearings are held in a housing, and liquid mixed with abrasive grains is prevented from entering the interior of the housing through a small hole, thereby improving service life. The guide roller is configured to comprise a housing wherein the bearings are held in the housing, and the housing has a shaft hole wherein a support shaft is inserted that is installed upon the bearings. The shaft hole is formed to have a tapered wall, and the diameter of the hole decreases continuously toward the interior of the housing.Type: GrantFiled: October 26, 2010Date of Patent: March 22, 2016Assignee: Miki Pulley Co., Ltd.Inventors: Katsuhiko Sato, Tomio Watanabe
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Publication number: 20150240856Abstract: Provided is a screw fastener provided with the function of a torque limiter which allows a high limit value to be set for the fastening torque without increasing the size thereof or the spring force of the spring member, and is easy to assemble and service. A multiple plate torque limiter is formed by a plurality of drive disk members (50) and a plurality of driven disk members (52) between a first member (10) and a second member (30), and the first member (10) and the second member (30) are detachably joined to each other by a retaining screw (22).Type: ApplicationFiled: February 9, 2015Publication date: August 27, 2015Applicant: Miki Pulley Co., Ltd.Inventors: Tomio Watanabe, Hideo Sato
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Patent number: 8992334Abstract: A flexible shaft coupling demonstrates a high performance in transmitting torque and accommodating positional deviations, and is yet highly durable. A first elastomer member (82) having a relatively high rubber hardness is circumferentially interposed between a first claw (32) of a first shaft coupling member (20) and a second claw (62) of a second shaft coupling member (50), and a second elastomer member (84, 86) having a lower rubber hardness than the first elastomer member is interposed between a surface portion (end surface) (30) of the first shaft coupling member (20) and the second claw (62) and/or between a surface portion (end surface) (60) of the second shaft coupling member (50) and the first claw (32).Type: GrantFiled: October 28, 2013Date of Patent: March 31, 2015Assignee: Miki Pulley Co., Ltd.Inventors: Tatsuya Sato, Shigeyuki Hattori, Takayuki Satomi, Junpei Kajiyama
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Publication number: 20140116608Abstract: Provided is a flexible shaft coupling which demonstrates a high performance in transmitting torque and accommodating positional deviations, and is yet highly durable. A first elastomer member (82) having a relatively high rubber hardness is circumferentially interposed between a first claw (32) of a first shaft coupling member (20) and a second claw (62) of a second shaft coupling member (50), and a second elastomer member (84, 86) having a lower rubber hardness than the first elastomer member is interposed between a surface portion (end surface) (30) of the first shaft coupling member (20) and the second claw (62) and/or between a surface portion (end surface) (60) of the second shaft coupling member (50) and the first claw (32).Type: ApplicationFiled: October 28, 2013Publication date: May 1, 2014Applicant: Miki Pulley Co., Ltd.Inventors: Tatsuya Sato, Shigeyuki Hattori, Takayuki Satomi, Junpei Kajiyama
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Patent number: D678040Type: GrantFiled: August 29, 2011Date of Patent: March 19, 2013Assignee: Miki Pulley Co., Ltd.Inventors: Yoshitaka Shikama, Koji Honda
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Patent number: D688549Type: GrantFiled: November 18, 2011Date of Patent: August 27, 2013Assignee: Miki Pulley Co., Ltd.Inventors: Yoshitaka Shikama, Koji Honda
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Patent number: D767375Type: GrantFiled: April 27, 2015Date of Patent: September 27, 2016Assignee: Miki Pulley Co., Ltd.Inventors: Etsuo Nakano, Satoshi Kinoshita
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Patent number: D783135Type: GrantFiled: April 27, 2015Date of Patent: April 4, 2017Assignee: Miki Pulley Co., Ltd.Inventors: Katsuhiko Sato, Toru Shibuya
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Patent number: D788271Type: GrantFiled: April 27, 2015Date of Patent: May 30, 2017Assignee: Miki Pulley Co., Ltd.Inventors: Katsuhiko Sato, Toru Shibuya
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Patent number: D812725Type: GrantFiled: April 12, 2017Date of Patent: March 13, 2018Assignee: Miki Pulley Co., Ltd.Inventors: Katsuhiko Sato, Tomio Watanabe
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Patent number: D816192Type: GrantFiled: June 15, 2016Date of Patent: April 24, 2018Assignee: Miki Pulley Co., Ltd.Inventors: Katsuhiko Sato, Tomio Watanabe
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Patent number: D839939Type: GrantFiled: September 6, 2016Date of Patent: February 5, 2019Assignee: Miki Pulley Co., Ltd.Inventor: Hideo Sato
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Patent number: D880989Type: GrantFiled: June 19, 2017Date of Patent: April 14, 2020Assignee: MIKI PULLEY CO., LTD.Inventors: Takeshi Hashimoto, Ryota Chiba
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Patent number: D883210Type: GrantFiled: April 5, 2018Date of Patent: May 5, 2020Assignee: Miki Pulley Co., Ltd.Inventors: Junpei Kajiyama, Satoshi Kinoshita, Takayuki Satomi, Masaharu Hirosawa
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Patent number: D883211Type: GrantFiled: April 5, 2018Date of Patent: May 5, 2020Assignee: Miki Pulley Co., Ltd.Inventors: Junpei Kajiyama, Satoshi Kinoshita, Takayuki Satomi, Masaharu Hirosawa