Patents by Inventor Mikio Takimoto
Mikio Takimoto 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: 9099640Abstract: Electrodes (7, 8, 9), having curved sections in the shape of the outline thereof, are disposed in areas of a rectangular plate-shaped piezoelectric transducer element (1) in which the strain in the natural mode of vibration is large. The electrodes (7, 8) which excite a bending vibration are disposed in areas in which the strain in the bending natural mode is at least a predetermined value, and the outline curved sections of the electrodes (7, 8) are shaped so as to follow along strain contours (3, 4), and the electrode (9) which excites a stretching vibration is disposed in an area in which the strain in the stretching natural mode is at least a predetermined value, thus providing a transducer for an ultrasonic motor which aims to reduce transducer loss (increasing vibration efficiency), and improve transducer durability and reliability.Type: GrantFiled: January 26, 2011Date of Patent: August 4, 2015Assignees: ISHIKAWA PREFECTURE, NIKKO COMPANY, TOKYO INSTITUTE OF TECHNOLOGYInventors: Masahiro Takano, Kenichi Hirosaki, Yuta Yoshida, Takuya Nagata, Shou Makino, Satoru Ichimura, Takashi Yoshida, Masayuki Ishida, Hiroshi Kawai, Mikio Takimoto, Kentaro Nakamura
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Patent number: 8531091Abstract: A holding device for a piezoelectric vibrator including a support member (11) for separately accommodating a piezoelectric vibrator (1), a first plate spring member (13) which extends from a proximal end fixedly bonded to one side of the support member (11) so as to sandwich opposing sides of the piezoelectric vibrator (1) and is folded back to be fixedly bonded to the piezoelectric vibrator, and a second plate spring member (18) which extends from a proximal end fixedly bonded to another side of the support member (11) so as to sandwich the opposing sides of the piezoelectric vibrator (1) and is folded back to be fixedly bonded to the piezoelectric vibrator. The first plate spring member (13) and the second plate spring member (18) are integrated at portions fixedly bonded to the piezoelectric vibrator (1).Type: GrantFiled: October 30, 2008Date of Patent: September 10, 2013Assignees: Nikko Company, Ishikawa PrefectureInventors: Takashi Yoshida, Mikio Takimoto, Masahiro Takano, Kenichi Hirosaki
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Publication number: 20120314269Abstract: A piezoelectric actuator mechanism including: a screw-driven feeding mechanism that has a feed screw (11) and a feed screw nut (14); a disc-shaped rotor (17) mounted on the rear-end face of the feed screw nut (14); an ultrasonic motor (18) having a piezoelectric vibrator (19) that comes in contact with the circumference face of the rotor (17); and a driven mounting portion that is pressed against the leading end of the feed screw 11 by spring force, and displaced and positioned by the feeding operation of the feed screw. The driven mounting portion can be made to be a mirror holder (1) for use in an optical system, or a movable table (21) of a linear stage.Type: ApplicationFiled: January 26, 2011Publication date: December 13, 2012Applicants: ISHIKAWA PREFECTURE, TOKYO INSTITUTE OF TECHNOLOGY, NIKKO COMPANY, SIGMA KOKI CO., LTDInventors: Masahiro Takano, Kenichi Hirosaki, Ryuji Shintani, Yuta Yoshida, Toshiharu Minamikawa, Kouichi Nakano, Takuya Nagata, Shou Makino, Satoru Ichimura, Takashi Yoshida, Masayuki Ishida, Hiroshi Kawai, Mikio Takimoto, Kentaro Nakamura
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Publication number: 20120293043Abstract: Electrodes (7, 8, 9), having curved sections in the shape of the outline thereof, are disposed in areas of a rectangular plate-shaped piezoelectric transducer element (1) in which the strain in the natural mode of vibration is large. The eletrodes (7, 8) which excite a bending vibration are disposed in areas in which the strain in the bending natural mode is at least a predetermined value, and the outline curved sections of the electrodes (7, 8) are shaped so as to follow along strain contours (3, 4), and the electrode (9) which excites a stretching vibration is disposed in an area in which the strain in the stretching natural mode is at least a predetermined value, thus providing a transducer for an ultrasonic motor which aims to reduce transducer loss (increasing vibration efficiency), and improve transducer durability and reliability.Type: ApplicationFiled: January 26, 2011Publication date: November 22, 2012Applicants: ISHIKAWA PREFECTURE, TOKYO INSTITUTE OF TECHNOLOGY, NIKKO COMPANY, SIGMA KOKI CO., LTDInventors: Masahiro Takano, Kenichi Hirosaki, Yuta Yoshida, Takuya Nagata, Shou Makino, Satoru Ichimura, Takashi Yoshida, Masayuki Ishida, Hiroshi Kawai, Mikio Takimoto, Kentaro Nakamura
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Publication number: 20110133606Abstract: An object is to provide a holding device for a piezoelectric vibrator, which eliminates vibration energy loss and a change in vibration characteristics, and is capable of supplying stable output with high efficiency. The holding device for a piezoelectric vibrator of the present invention includes: a support member (11) of a frame shape or a box shape for separately accommodating a piezoelectric vibrator (1); and a plate spring structure (12) interposed between sides of the support member (11) and the piezoelectric vibrator (1).Type: ApplicationFiled: October 30, 2008Publication date: June 9, 2011Applicants: NIKKO COMPANY, ISHIKAWA PREFECTUREInventors: Takashi Yoshida, Mikio Takimoto, Masahiro Takano, Kenichi Hirosaki
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Patent number: 7932661Abstract: In the invention, each piezoelectric element for a vibrator for an ultrasonic motor has electrode regions for exciting stretching vibration and flexural vibration separately. Thus, the invention provides a vibrator for an ultrasonic motor, in which electrodes are provided for applying voltage to each of the polarized region, and further provides a stack-type piezoelectric vibrator for an ultrasonic motor, consisting of a stack of the said vibrators and having an extraction electrode pattern provided for short circuit with an external electrode. The vibrator of the invention has high controllability, especially in a fine movement region and is useful as a driving source in a positioning device, in which enhanced vibration efficiency can be obtained.Type: GrantFiled: September 23, 2008Date of Patent: April 26, 2011Assignees: Nikko Company, Ishikawa Prefectural GovernmentInventors: Koji Ando, Mikio Takimoto, Masahiro Takano, Ryuji Shintani
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Publication number: 20100095995Abstract: The present invention provides a thermoelectric conversion module, comprising plural first electrode films (11, 12, 13) formed apart from each other on the top surface of an insulating body (10), plural p- and n-type thermoelectric semiconductor element films (16, 19) and (17, 18) formed thereon, which are arranged apart from each other so that p- and n-type thermoelectric semiconductor element films alternate with each other, and second electrode films (20) connecting p-type thermoelectric semiconductor element film (19) and n-type thermoelectric semiconductor element film (18) over the gaps between the first electrode films; and a terminal electrode is connected to each of the p-and n-type thermoelectric semiconductor element film (16, 17) at the end; and a production method thereof.Type: ApplicationFiled: October 17, 2008Publication date: April 22, 2010Applicants: ISHIKAWA PREFECTURAL GOVERNMENT, NIKKO COMPANY, ACTREE CORPORATIONInventors: Takeshi Toyoda, Shizuo Nakamura, Mikio Takimoto, Naoki Kidani, Hiroshi Kamei, Hiroharu Mizukoshi, Megumi Masui
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Publication number: 20100072858Abstract: In the invention, each piezoelectric element for a vibrator for an ultrasonic motor has electrode regions for exciting stretching vibration and flexural vibration separately. Thus, the invention provides a vibrator for an ultrasonic motor, in which electrodes are provided for applying voltage to each of the polarized region, and further provides a stack-type piezoelectric vibrator for an ultrasonic motor, consisting of a stack of the said vibrators and having an extraction electrode pattern provided for short circuit with an external electrode. The vibrator of the invention has high controllability, especially in a fine movement region and is useful as a driving source in a positioning device, in which enhanced vibration efficiency can be obtained.Type: ApplicationFiled: September 23, 2008Publication date: March 25, 2010Applicants: NIKKO COMPANY, ISHIKAWA PREFECTURAL GOVERNMENTInventors: Koji ANDO, Mikio TAKIMOTO, Masahiro TAKANO, Ryuji SHINTANI
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Patent number: 7300897Abstract: A low temperature sintering ceramic composition can be sintered at 850 to 1,000° C., and the sintered ceramic has a low dielectric constant (9 or less at 16 Ghz or more) and a high Qf (10,000 or more). The composition can be co-sintered with wiring material containing Ag, Au, or Cu. The ceramic composition includes (by mass) CaO, MgO, and SiO2 in total: over 60% to 98.6%; Bi2O3: from 1% to under 35%; and Li2O: from 0.4% to under 6%; wherein (CaO+MgO) and SiO2 are contained in the molar ratio of from 1:1 to under 1:2.5.Type: GrantFiled: April 14, 2004Date of Patent: November 27, 2007Assignee: Nikko CompanyInventors: Naoki Kidani, Kiyoshi Mizushima, Mikio Takimoto
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Patent number: 7276460Abstract: A low temperature sintering ceramic composition that can be sintered at a temperature equal to or less than 1000° C. and has low dielectric constant and dielectric loss in a high frequency region of 17 Ghz or more, an electronic component using the same and a method of fabricating the low temperature sintering ceramic are provided. The composition comprises MgO and SiO2 in sum total in the range of from 64.0 to 99.2% by mass; Bi2O3 in the range of from 0.4 to 33.0% by mass; Li2O in the range of from 0.4 to 3.0% by mass; and MgO and SiO2 are contained in the molar ratio of from 2:1 to 2:3.5, at least part thereof being contained as a complex oxide of Mg and Si.Type: GrantFiled: December 24, 2003Date of Patent: October 2, 2007Assignee: Nikko CompanyInventors: Naoki Kidani, Kiyoshi Mizushima, Mikio Takimoto
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Publication number: 20060172878Abstract: A low temperature sintering ceramic composition can be sintered at 850 to 1,000° C., and the sintered ceramic has a low dielectric constant (9 or less at 16 Ghz or more) and a high Qf (10,000 or more). The composition can be co-sintered with wiring material containing Ag, Au, or Cu. The ceramic composition includes (by mass) CaO, MgO, and SiO2 in total: over 60% to 98.6%; Bi2O3: from 1% to under 35%; and Li2O: from 0.4% to under 6%; wherein (CaO+MgO) and SiO2 are contained in the molar ratio of from 1:1 to under 1:2.5.Type: ApplicationFiled: April 14, 2004Publication date: August 3, 2006Applicant: NIKKO COMPANYInventors: Naoki Kidani, Kiyoshi Mizushima, Mikio Takimoto
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Publication number: 20060058170Abstract: A low temperature sintering ceramic composition that can be sintered at a temperature equal to or less than 1000° C. and has low dielectric constant and dielectric loss in a high frequency region of 17 Ghz or more, an electronic component using the same and a method of fabricating the low temperature sintering ceramic are provided. The composition comprises MgO and SiO2 in sum total in the range of from 64.0 to 99.2% by mass; Bi2O3 in the range of from 0.4 to 33.0% by mass; Li2O in the range of from 0.4 to 3.0% by mass; and MgO and SiO2 are contained in the molar ratio of from 2:1 to 2:3.5, at least part thereof being contained as a complex oxide of Mg and Si.Type: ApplicationFiled: December 24, 2003Publication date: March 16, 2006Applicant: NIKKO COMPANYInventors: Naoki Kidani, Kiyoshi Mizushima, Mikio Takimoto