Patents by Inventor Yasuo Matsuda
Yasuo Matsuda 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: 8854820Abstract: A power module can prevent damages due to cracking or breakage of an insulating substrate when molding even if a heat plate constituting a power module pre-product is made areally smaller than the insulating substrate, and can also sufficiently satisfy demand for minimization. Specifically, the power module pre-product is sealed by a molding resin layer in a state where externally exposed end portion on one end side in both external connecting terminals and the other surface side of a heat plate are each exposed to the outside. The power module substrate constituting a multilayer substrate body includes an aligning hole, into which an aligning pin is inserted, the pin being included in a lower molding die constituting a molding die with an upper molding die that molds a molding resin layer, so as to position the power module pre-product inside a cavity.Type: GrantFiled: June 22, 2010Date of Patent: October 7, 2014Assignee: Omron CorporationInventors: Shingo Yamamoto, Akio Sumiya, Yasuo Matsuda, Naoto Inoue, Makoto Tami, Ryo Sugihara, Fumiaki Tanaka, Shintaro Hara, Shota Akinaga
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Publication number: 20130291879Abstract: A testicular support belt for improving disorders of micturition in men and also helping to improve their quality of life by preventing deterioration in male testicular function, activating testicular function by improving the status of the micturition disorder, and preventing prostatic disease, while at the same time improving voiding completion, thereby reducing phenomena associated with disorders of micturition such as sensations of residual urine and the phenomenon of dripping after passing urine. A testicular support belt for men to improve disorders of micturition, wherein a scrotal support pad is sewn onto the inside or outside of a tape-type elastic component, and the elastic component includes a woven elastic tape, and the scrotal support pad a woven band of cotton fabric.Type: ApplicationFiled: April 22, 2013Publication date: November 7, 2013Inventor: Yasuo MATSUDA
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Publication number: 20120127668Abstract: A power module can prevent damages due to cracking or breakage of an insulating substrate when molding even if a heat plate constituting a power module pre-product is made areally smaller than the insulating substrate, and can also sufficiently satisfy demand for minimization. Specifically, the power module pre-product is sealed by a molding resin layer in a state where externally exposed end portion on one end side in both external connecting terminals and the other surface side of a heat plate are each exposed to the outside. The power module substrate constituting a multilayer substrate body includes an aligning hole, into which an aligning pin is inserted, the pin being included in a lower molding die constituting a molding die with an upper molding die that molds a molding resin layer, so as to position the power module pre-product inside a cavity.Type: ApplicationFiled: June 22, 2010Publication date: May 24, 2012Applicant: OMRON CORPORATIONInventors: Shingo Yamamoto, Akio Sumiya, Yasuo Matsuda, Naoto Inoue, Makoto Tami, Ryo Sugihara, Fumiaki Tanaka, Shintaro Hara, Shota Akinaga
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Patent number: 7779532Abstract: A manufacturing method of a hybrid permanent magnet type electric rotating machine including a stator that is constructed by winding excitation coils around respective main poles. A rotor is constructed by fixing a first rotor unit, which consists of a pair of rotor cores and a magnetic material sandwiched between the rotor cores, and a second rotor unit, which has the same construction as the first rotor unit, to a rotation shaft. The rotor is assembled to the stator to form an assembled body. The magnet material of the first rotor unit is magnetized in the axial direction by a magnetizing flux passing through a half of the assembled body in the axial direction. The magnet material of the second rotor unit is magnetized in the axial direction in an opposite polarity by a magnetizing flux passing through the remaining half of the assembled body in the axial direction.Type: GrantFiled: February 22, 2007Date of Patent: August 24, 2010Assignee: Nidec Servo CorporationInventors: Masafumi Sakamoto, Toru Kobayashi, Masahiko Azegami, Yasuaki Motegi, Takaya Kato, Shoji Oiwa, Yasuo Matsuda, Kazuo Onishi, Tadashi Fukushima, Norimoto Tanaka
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Patent number: 7589440Abstract: A stepping motor includes: a stator having main magnetic poles each having small stator teeth on its tip, a core-back portion that connects outer portions of the poles, and windings wound around the poles; and two sets of rotor units that are arranged in an axial direction and face the stator with an air gap therebetween. Each rotor unit consists of two rotor cores that are separated in the axial direction and a magnet sandwiched thereby and magnetized in the axial direction. Each rotor core has small rotor teeth around its outer surface. The rotor cores of each rotor unit are deviated by ½ pitch of the small rotor teeth, and the two rotor units are arranged to make the magnetic polarities of the small rotor teeth of the adjacent two rotor cores identical. A magnet thickness Tm and a rotor core thickness Tc satisfy 0.25?Tm/Tc?0.45.Type: GrantFiled: November 22, 2006Date of Patent: September 15, 2009Assignee: Nidec Servo CorporationInventors: Shoji Oiwa, Masafumi Sakamoto, Toru Kobayashi, Masahiko Azegami, Yasuaki Motegi, Takaya Kato, Yasuo Matsuda, Kazuo Onishi, Naoyuki Kanamori, Tadashi Fukushima
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Publication number: 20070200464Abstract: A stator is constructed by winding excitation coils around respective main poles. A rotor is constructed by fixing a first rotor unit, which consists of a pair of rotor cores and a magnetic material sandwiched between the rotor cores, and a second rotor unit, which has the same construction as the first rotor unit, to a rotation shaft. The rotor is assembled to the stator to form an assembled body. The magnet material of the first rotor unit is magnetized in the axial direction by a magnetizing flux passing through a half of the assembled body in the axial direction. The magnet material of the second rotor unit is magnetized in the axial direction in an opposite polarity by a magnetizing flux passing through the remaining half of the assembled body in the axial direction.Type: ApplicationFiled: February 22, 2007Publication date: August 30, 2007Applicant: JAPAN SERVO CO., LTD.Inventors: Masafumi Sakamoto, Toru Kobayashi, Masahiko Azegami, Yasuaki Motegi, Takaya Kato, Shoji Oiwa, Yasuo Matsuda, Kazuo Onishi, Tadashi Fukushima, Norimoto Tanaka
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Publication number: 20070120426Abstract: A stepping motor includes: a stator having main magnetic poles each having small stator teeth on its tip, a core-back portion that connects outer portions of the poles, and windings wound around the poles; and two sets of rotor units that are arranged in an axial direction and face the stator with an air gap therebetween. Each rotor unit consists of two rotor cores that are separated in the axial direction and a magnet sandwiched thereby and magnetized in the axial direction. Each rotor core has small rotor teeth around its outer surface. The rotor cores of each rotor unit are deviated by ½ pitch of the small rotor teeth, and the two rotor units are arranged to make the magnetic polarities of the small rotor teeth of the adjacent two rotor cores identical. A magnet thickness Tm and a rotor core thickness Tc satisfy 0.25?Tm/Tc?0.45.Type: ApplicationFiled: November 22, 2006Publication date: May 31, 2007Applicant: JAPAN SERVO CO., LTD.Inventors: Shoji Oiwa, Masafumi Sakamoto, Toru Kobayashi, Masahiko Azegami, Yasuaki Motegi, Takaya Kato, Yasuo Matsuda, Kazuo Onishi, Yuji Enomoto, Naoyuki Kanamori, Tadashi Fukushima
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Patent number: 7068001Abstract: A motor control system according to the present invention comprises a magnetic encoder including a magnetic drum fixed to an output shaft of a motor and a magnetic sensor provided against a periphery of the magnetic drum through a space, an angle calculating unit for calculating a rotational angle of the motor from an output of the magnetic encoder, an angle estimating unit for estimating the rotational angle, an error angle calculating unit for finding an error angle from an calculated angle calculated by the angle calculating unit and an estimated angle estimated by the angle estimating unit, an error-correction value calculating unit for calculating from the error angle an error-correction value that corresponds to the rotational angle, a correction calculating unit for calculating a correction angle or a correction speed from the calculated angle and the error-correction value, and a motor operation controlling unit for outputting to an inverter a voltage command value that corresponds to the correction aType: GrantFiled: July 22, 2005Date of Patent: June 27, 2006Assignee: Japan Servo Co., Ltd.Inventors: Yoshihiro Okumatsu, Yasuo Matsuda, Shoji Ohiwa
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Motor having cores structure wherein magnetic circuit is designed in three dimensional configuration
Publication number: 20060113849Abstract: In order to provide a motor characterized by a high level of efficiency equal to or better than that of using the silicon steel plate, achieved by easy production method and reduced core loss, which result from reduction in the manpower for production by using the sintered metal or powdered iron core in at least one of the stator and rotor, the present invention provides a motor comprising a stator and a rotor wherein either one of said stator or rotor has a magnet, and the other has a magnetic substance. This motor is further characterized in that the main magnetic flux flowing between the stator and rotor changes in the three-dimensional directions according to the magnetic structure of this motor, and at least part of said magnetic substance is composed of an aggregate of magnetic powder.Type: ApplicationFiled: January 6, 2006Publication date: June 1, 2006Inventors: Yuji Enomoto, Noriaki Hino, Shouichi Kawamata, Kazumasa Ide, Yasuo Matsuda, Toshihiko Sakai -
Publication number: 20060022628Abstract: A motor control system according to the present invention comprises a magnetic encoder including a magnetic drum fixed to an output shaft of a motor and a magnetic sensor provided against a periphery of the magnetic drum through a space, an angle calculating unit for calculating a rotational angle of the motor from an output of the magnetic encoder, an angle estimating unit for estimating the rotational angle, an error angle calculating unit for finding an error angle from an calculated angle calculated by the angle calculating unit and an estimated angle estimated by the angle estimating unit, an error-correction value calculating unit for calculating from the error angle an error-correction value that corresponds to the rotational angle, a correction calculating unit for calculating a correction angle or a correction speed from the calculated angle and the error-correction value, and a motor operation controlling unit for outputting to an inverter a voltage command value that corresponds to the correction aType: ApplicationFiled: July 22, 2005Publication date: February 2, 2006Inventors: Yoshihiro Okumatsu, Yasuo Matsuda, Shoji Ohiwa
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Patent number: 6897633Abstract: A stepping motor driver which drives a stepping motor for position and speed control. The stepping motor driver comprises: a current control means which outputs values corresponding to applied voltages; current sensors which detect phase currents; and a magnetic pole position estimation unit which uses the values corresponding to applied voltages and detected phase current values as outputs of the current sensors to obtain a magnetic pole position estimate. The magnetic pole position estimation unit calculates a magnetic pole position estimate from speed electromotive force estimates or from differences between phase currents at zero speed and detected phase current values.Type: GrantFiled: March 9, 2004Date of Patent: May 24, 2005Assignee: Japan Servo Co., Ltd.Inventors: Yoshifumi Kuwano, Akio Takemori, Hiroaki Taka, Yasuo Matsuda, Yoshihiro Okumatsu, Atsuo Kawamura, Yukinari Takahashi
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Patent number: 6850027Abstract: The stepping motor driver comprises an inverter for feeding stepped currents to windings of a stepping motor, a position detector for obtaining a detected angle of a rotor of the stepping motor and a current controller for controlling the inverter. In a d-q rotational coordinate system in which the d-axis is in the direction of the magnetic flux of the rotor and the q-axis is in the direction perpendicular to the d-axis, an excitation angle for a winding is determined from a d-axis component and a q-axis component of a command current to the winding, a lead angle control signal is computed from the excitation angle, and a phase of an applied voltage to the stepping motor is controlled using the lead angle control signal.Type: GrantFiled: March 18, 2003Date of Patent: February 1, 2005Assignee: Japan Servo Co., Ltd.Inventors: Yoshifumi Kuwano, Akio Takemori, Yasuo Matsuda, Yoshihiro Okumatsu, Atsuo Kawamura
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Publication number: 20040178763Abstract: A stepping motor driver which drives a stepping motor for position and speed control. The stepping motor driver comprises: a current control means which outputs values corresponding to applied voltages; current sensors which detect phase currents; and a magnetic pole position estimation unit which uses the values corresponding to applied voltages and detected phase current values as outputs of the current sensors to obtain a magnetic pole position estimate. The magnetic pole position estimation unit calculates a magnetic pole position estimate from speed electromotive force estimates or from differences between phase currents at zero speed and detected phase current values.Type: ApplicationFiled: March 9, 2004Publication date: September 16, 2004Inventors: Yoshifumi Kuwano, Akio Takemori, Hiroaki Taka, Yasuo Matsuda, Yoshihiro Okumatsu, Atsuo Kawamura, Yukinari Takahashi
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Publication number: 20040108782Abstract: In order to provide a motor characterized by a high level of efficiency equal to or better than that of using the silicon steel plate, achieved by easy production method and reduced core loss, which result from reduction in the manpower for production by using the sintered metal or powdered iron core in at least one of the stator and rotor, the present invention provides a motor comprising a stator and a rotor wherein either one of said stator or rotor has a magnet, and the other has a magnetic substance. This motor is further characterized in that the main magnetic flux flowing between the stator and rotor changes in the three-dimensional directions according to the magnetic structure of this motor, and at least part of said magnetic substance is composed of an aggregate of magnetic powder.Type: ApplicationFiled: August 15, 2003Publication date: June 10, 2004Inventors: Yuji Enomto, Noriaki Hino, Shouichi Kawamata, Kazumasa Ide, Yasuo Matsuda, Toshihiko Sakai
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Publication number: 20030178965Abstract: The stepping motor driver comprises an inverter for feeding stepped currents to windings of a stepping motor, a position detector for obtaining a detected angle of a rotor of the stepping motor and a current controller for controlling the inverter. In a d-q rotational coordinate system in which the d-axis is in the direction of the magnetic flux of the rotor and the q-axis is in the direction perpendicular to the d-axis, an excitation angle for a winding is determined from a d-axis component and a q-axis component of a command current to the winding, a lead angle control signal is computed from the excitation angle, and a phase of an applied voltage to the stepping motor is controlled using the lead angle control signal.Type: ApplicationFiled: March 18, 2003Publication date: September 25, 2003Inventors: Yoshifumi Kuwano, Akio Takemori, Yasuo Matsuda, Yoshihiro Okumatsu, Atsuo Kawamura
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Patent number: 6546760Abstract: There is provided an optical fiber drawing furnace capable of drawing an optical fiber having small non circularity, which drawing furnace includes a muffle tube, in which an optical fiber preform is supplied, a heater surrounding the muffle tube, a plurality of electrode connecting portion extending from the heater, a plurality of electrodes connected to electrode connecting portions, and in conjunction therewith to an electric power source, and unifying means for unifying the temperature distribution along the circumferential direction.Type: GrantFiled: July 3, 1996Date of Patent: April 15, 2003Assignee: Sumitomo Electric Industries, Ltd.Inventors: Ichiro Tsuchiya, Kohei Kobayashi, Hiroaki Ohta, Kazuya Kuwahara, Katsuyuki Tsuneishi, Hideo Miyaki, Yasuo Matsuda
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Patent number: 6181859Abstract: A coated optical fiber comprising a drawn glass fiber, and a primary coating and a secondary coating which are formed by photo-curing primary and secondary coating resins simultaneously applied to an outer periphery of the glass fiber, wherein an adhesion force S (g/cm) at an interface between the primary coating resin after curing and the glass fiber is at least {fraction (1/13)} ((g/cm)/° C.) with respect to a glass transition temperature Tg (° C.) of the secondary coating resin after curing.Type: GrantFiled: July 19, 1999Date of Patent: January 30, 2001Assignee: Sumitomo Electric Industries, Ltd.Inventors: Atsushi Suzuki, Nobuhiro Akasaka, Yasuo Matsuda
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Patent number: 6173102Abstract: A coated optical fiber comprising a glass fiber constituted by a silica based glass core and cladding; and a primary coating and a secondary coating which are formed by photo-curing a primary coating resin layer and a secondary coating resin layer which are applied to an outer periphery of the glass fiber, wherein a maximum value As(max) of absorbances As of the secondary coating resin layer before curing with respect to light in a wavelength region of 310 to 340 nm is not more than 0.5, whereas absorbances Ap of the primary coating resin layer before curing with respect to light in this wavelength region are greater than the absorbances As.Type: GrantFiled: July 19, 1999Date of Patent: January 9, 2001Assignee: Sumitomo Electric Industries, Ltd.Inventors: Atsushi Suzuki, Nobuhiro Akasaka, Yasuo Matsuda
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Patent number: 6078715Abstract: This invention concerns a large-diameter optical fiber that is improved in the bandwidth and bending loss and that can be produced at low cost with higher productivity. The optical fiber comprises an inner core having a refractive index profile in which refractive indices increase toward the center axis thereof, an outer core provided outside the inner core and having a constant refractive index not more than the minimum refractive index of the inner core, and a cladding provided outside the outer core and containing a plastic material having a refractive index lower than that of the outer core. In the optical fiber, total refractive index difference (.DELTA.n.sub.total), defined as the difference between the maximum refractive index of the inner core and the refractive index of the cladding, is not less than 0.015 and not more than 0.1; and a outside core diameter of the outer core (d.sub.1) is not less than 100 .mu.m and not more than 500 .mu.m.Type: GrantFiled: June 12, 1998Date of Patent: June 20, 2000Assignee: Sumitomo Electric Industries, Ltd.Inventors: Takashi Fujii, Yasuo Matsuda, Kazuki Sogabe, Takayuki Mishima
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Patent number: D899573Type: GrantFiled: November 15, 2018Date of Patent: October 20, 2020Assignee: OMRON HEALTHCAE Co., Ltd.Inventors: Tsuyoshi Ogihara, Masahiko Yumoto, Yukiko Mitsunami, Kengo Nishiyama, Kosuke Inoue, Tadashi Koike, Nobuhiko Osoegawa, Hiroyuki Shino, Takaaki Okanishi, Misaki Inaga, Yuka Tanioka, Katsumi Matsuda, Junji Kawamoto, Naoki Uchida, Yasuo Matsuda, Takahisa Suzuki, Takuya Togawa