Patents by Inventor Toshiyuki Aso
Toshiyuki Aso 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: 9797447Abstract: In a bearing for vertical axis windmill configured to rotatably support a vertical axis of a vertical axis windmill, the bearing includes a ball (7), a diameter of the ball and a curvature of a rolling groove of the bearing are set to satisfy a predetermined starting torque and a load rating. For example, the curvature of the rolling groove of the bearing is 54% or more and 100% or less, and the diameter of the ball has a ratio of 20% or less with respect to a vertical shaft (2).Type: GrantFiled: November 28, 2012Date of Patent: October 24, 2017Assignee: THK CO., LTD.Inventors: Toshiyuki Aso, Katsuya Iida, Tomoyuki Aida, Yuki Hayashi, Takashi Sakuyama
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Patent number: 9722467Abstract: According to one embodiment, there is provided armature windings of a rotating electrical machine, in which a 3-phase winding of two layers including upper and lower layers is constituted of phase belts having an electrical phase difference of 60° in between, pairs of upper coil pieces and lower coil pieces are contained in slots, the number of slots per pole per phase includes a fractional number, and a denominator thereof is an integral number greater than or equal to 4, wherein coil arrangement is carried out such that at least one coil piece in either of the upper or lower coil pieces included in two layers of upper and lower layers in one phase belt is replaced with a coil piece of an adjacent different phase.Type: GrantFiled: May 9, 2014Date of Patent: August 1, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Kadek Fendy Sutrisna, Hiroaki Ishizuka, Masashi Okubo, Toshiyuki Aso, Takashi Ueda, Kazuma Tsujikawa, Hideyuki Hachiya, Daisuke Hiramatsu, Toru Otaka
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Patent number: 9548641Abstract: A linear and rotary actuator system includes a shaft member moving linearly in an axial direction and rotating around an axis line, a hollow rotor surrounding the shaft member, a stator of a rotary motor having a space for holding the rotor and which rotates the rotor around the axis line, linear bearings, that rotates together with the rotor to transmit rotation of the rotor of the rotary motor to the shaft member and accepts linear movement of the shaft member, an angle measuring unit for measuring a rotation angle of the rotor, and a rotary motor driver for controlling the rotary motor in such a manner that the rotation angle of the rotor of the rotary motor measured by the angle measuring unit conforms to a command value. The rotation angle of the shaft member is controlled by controlling the rotation angle of the rotor of the rotary motor.Type: GrantFiled: February 18, 2014Date of Patent: January 17, 2017Assignee: THK CO., LTD.Inventors: Toshiyuki Aso, Shuhei Yamanaka, Takayuki Kuze
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Patent number: 9127643Abstract: A rotary moto actuator with a base 22, a table 21, a stator 25 and a rotor 26 of a rotary motor 31 and a first member 12 and a second member 14 of a guide mechanism 24 that have a plurality of base segments 22a, a plurality of table segments 21a, a plurality of stator segments 25a, a plurality of rotor segments 26a, a plurality of first member segments 12a and a plurality of second member segments 14, respectively, which all arranged circumferentially around a center line C. The stator segments 25a are connected to the base segments 22a, to which the first member segments 12a are connected. The rotor segments 26a are connected to the table segments 21a, to which the second member segments 14a are connected.Type: GrantFiled: September 14, 2010Date of Patent: September 8, 2015Assignee: THK CO., LTD.Inventors: Toshiyuki Aso, Tomoyuki Aida, Akihiro Unno, Yuki Hayashi, Ayako Miyajima, Kazuhiro Tani
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Patent number: 9088201Abstract: A drive guide device capable of effectively releasing heat produced by a mover. The drive guide device has a movement unit 100 moved by a linear motor while being guided by a rail 230. The movement unit 100 has the mover 140 to which electricity is conducted to produce a magnetic field, a table 110 placed on the mover 140 on the opposite side of a base 210 to which the rail 230 is fixed, a heat sink 130 having heat radiation fins for releasing heat produced by the mover 140 and placed between the mover 140 and the table 110, and a heat transmission route for transmitting heat, which cannot be released by the heat sink 130, to the table 110. The table 110 is made from a material having a low thermal expansion coefficient.Type: GrantFiled: March 26, 2008Date of Patent: July 21, 2015Assignee: THK CO., LTD.Inventors: Toshiyuki Aso, Akihiro Unno
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Publication number: 20140333170Abstract: According to one embodiment, there is provided armature windings of a rotating electrical machine, in which a 3-phase winding of two layers including upper and lower layers is constituted of phase belts having an electrical phase difference of 60° in between, pairs of upper coil pieces and lower coil pieces are contained in slots, the number of slots per pole per phase includes a fractional number, and a denominator thereof is an integral number greater than or equal to 4, wherein coil arrangement is carried out such that at least one coil piece in either of the upper or lower coil pieces included in two layers of upper and lower layers in one phase belt is replaced with a coil piece of an adjacent different phase.Type: ApplicationFiled: May 9, 2014Publication date: November 13, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Kadek Fendy SUTRISNA, Hiroaki Ishizuka, Masashi Okubo, Toshiyuki Aso, Takashi Ueda, Kazuma Tsujikawa, Hideyuki Hachiya, Daisuke Hiramatsu, Toru Otaka
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Patent number: 8872449Abstract: A distributed-arrangement linear motor in which stators are arranged in a distributed manner and a method of controlling the distributed-arrangement linear motor are provided. The linear motor 1 is a linear motor in which a stator and a movable member are relatively movable, wherein the stator and the movable member respectively have periodic structures in which plural kinds of poles of the stator and the movable member (12a, 12b, 12c) (22a, 22b, 22c) which magnetically act each other and arranged periodically subsequently in an order according to the arrangement in a direction of the relative motion therebetween; a plurality of stators are arranged in a distributed manner in the direction of the relative motion; a distance D1, D2 between adjacent stators is not more than a length Lmv of the movable member; the pole of the stator is formed of a coil 11; and a current control unit that controls current to be supplied to the coil based on the distance between the stators is provided.Type: GrantFiled: August 5, 2010Date of Patent: October 28, 2014Assignee: THK Co., Ltd.Inventors: Toshiro Tojo, Toshiyuki Aso, Yuki Nomura, Akihiro Unno
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Publication number: 20140306459Abstract: In a bearing for vertical axis windmill configured to rotatably support a vertical axis of a vertical axis windmill, the bearing includes a ball (7), a diameter of the ball and a curvature of a rolling groove of the bearing are set to satisfy a predetermined starting torque and a load rating. For example, the curvature of the rolling groove of the bearing is 54% or more and 100% or less, and the diameter of the ball has a ratio of 20% or less with respect to a vertical shaft (2).Type: ApplicationFiled: November 28, 2012Publication date: October 16, 2014Inventors: Toshiyuki Aso, Katsuya Iida, Tomoyuki Aida, Yuki Hayashi, Takashi Sakuyama
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Publication number: 20140159551Abstract: A linear and rotary actuator system includes a shaft member moving linearly in an axial direction and rotating around an axis line, a hollow rotor surrounding the shaft member, a stator of a rotary motor having a space for holding the rotor and which rotates the rotor around the axis line, linear bearings, that rotates together with the rotor to transmit rotation of the rotor of the rotary motor to the shaft member and accepts linear movement of the shaft member, an angle measuring unit for measuring a rotation angle of the rotor, and a rotary motor driver for controlling the rotary motor in such a manner that the rotation angle of the rotor of the rotary motor measured by the angle measuring unit conforms to a command value. The rotation angle of the shaft member is controlled by controlling the rotation angle of the rotor of the rotary motor.Type: ApplicationFiled: February 18, 2014Publication date: June 12, 2014Applicant: THK CO., LTD.Inventors: Toshiyuki ASO, Shuhei YAMANAKA, Takayuki KUZE
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Patent number: 8686603Abstract: Provided is a linear and rotary actuator capable of bearing moment and load from a movable body and downsizing its radial dimension. A spline shaft is held in housings to be movable linearly in the axial direction and rotatable about the axis. The spline shaft is connected to a mover shaft of a linear motor. The spline shaft is surrounded with a hollow rotor of a rotary motor. The rotor is connected to a spline nut which transmits rotation of the rotor to the spline shaft by rotating together with the rotor and allows linear movement of the spline shaft. The rotor of the rotary motor is rotated by a stator of the rotary motor. The spline nut, the stator of the rotary motor and a stator of the linear motor are arranged in this order from an end of the spline shaft and mover shaft along the axial direction.Type: GrantFiled: September 29, 2009Date of Patent: April 1, 2014Assignee: THK Co., Ltd.Inventors: Toshiyuki Aso, Shuhei Yamanaka, Takayuki Kuze
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Patent number: 8650978Abstract: There is provided a linear actuator provided with a dust-proof mechanism capable of preventing dust-proof belts from being deformed, improving a sealing performance between the dust-proof belts and a housing member, and achieving high dust-proof performance irrespective of a size of the linear actuator.Type: GrantFiled: December 7, 2010Date of Patent: February 18, 2014Assignee: THK Co., Ltd.Inventors: Toshiyuki Aso, Toshiya Tanaka, Toshiaki Mizuno, Norinobu Ogawa, Minoru Tsukada, Yukitoshi Kobayashi
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Publication number: 20130147286Abstract: There is provided a linear actuator provided with a dust-proof mechanism capable of preventing dust-proof belts from being deformed, improving a sealing performance between the dust-proof belts and a housing member, and achieving high dust-proof performance irrespective of a size of the linear actuator.Type: ApplicationFiled: December 7, 2010Publication date: June 13, 2013Applicant: THK CO., LTD.Inventors: Toshiyuki Aso, Toshiya Tanaka, Toshiaki Mizuno, Norinobu Ogawa, Minoru Tsukada, Yukitoshi Kobayashi
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Patent number: 8439338Abstract: A rotary table device includes a cooling structure and a rotary bearing provided with a cooling structure. A rotary table device provided with a cooling structure includes a hollow motor as a drive source, a table rotated by the hollow motor, and a rotary bearing supporting rotational motion of the table, in which the rotary bearing includes an outer ring having an inner peripheral surface to which a rolling surface is formed, an inner ring having an outer peripheral surface to which a rolling surface facing the rolling surface of the outer ring is formed, and a number of rolling members in a rolling passage formed by the rolling surface of the outer ring and the rolling surface of the inner ring, and a heat sink is formed to either one of the inner and outer rings.Type: GrantFiled: February 16, 2009Date of Patent: May 14, 2013Assignee: THK Co., Ltd.Inventors: Shigeru Taniguchi, Toshiyuki Aso, Toshiya Tanaka
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Patent number: 8390153Abstract: Provided is a linear motor capable of simplifying assembling of a coil unit and stabilizing a coil pitch and the overall length of the coil unit. The linear motor has a rod 1 having magnets 3, a plurality of coils 4 arranged in the axial direction of the rod 1, a housing 2 covering the coils 4, and a coil holder 5 holding the coils 4 in the housing 2. The coil holder 5 includes a holder main body 5a elongating in the coil arrangement direction and a plurality of spacer portions 5b made of resin and each interposed between each adjacent two of the coils 4 to insulate the coils 4 from each other, the spacer portions 5b being formed integrally with the holder main body 5a.Type: GrantFiled: September 28, 2006Date of Patent: March 5, 2013Assignee: THK Co., Ltd.Inventors: Toshiyuki Aso, Shuhei Yamanaka, Kazuya Horiike, Taro Miyamoto, Yukitaka Ikeya, Tadao Yoneta
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Patent number: 8362720Abstract: A position detection system includes a linear motor having a rod in which magnetic poles of N pole and S pole are arranged alternately in an axial direction and a plurality of coils surrounding the rod a magnetic sensor for detecting change in the direction of the magnetic field of the rod caused by linear movement of the rod relative to the coils to output a sine wave signal and a cosine wave signal which are 90° phase shifted with respect to one another, and a position detecting circuit for detecting a position of the rod relative to the coils. As the magnetic sensor detects the change in the direction of the magnetic field of the rod, the sine wave signal and the cosine wave signal output from the magnetic sensor hardly vary even when the distance between the rod and the magnetic sensor is changed.Type: GrantFiled: May 30, 2008Date of Patent: January 29, 2013Assignee: THK Co., Ltd.Inventors: Toshiyuki Aso, Shuhei Yamanaka, Toshiro Tojo
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Patent number: 8316776Abstract: A rotary table device includes a hollow motor drive source, a table rotated thereby, and a rotary bearing supporting the table. The rotary bearing is provided an outer race having an inner surface to which a rolling surface is formed, an inner race having an outer peripheral surface to which a rolling surface opposing to the rolling surface of the outer race is formed, and a plurality of rolling members disposed in a rolling passage formed by the rolling surface of the outer race and the rolling surface of the inner race, and a cooling medium passage (?, ?) is formed so as to be adjacent to either one of the inner race and outer race constituting a rotational driving side. According to the structure mentioned above, a rotary bearing and a rotary table device capable of achieving suitable cooling effect can be provided.Type: GrantFiled: March 28, 2008Date of Patent: November 27, 2012Assignee: THK Co., Ltd.Inventors: Shigeru Taniguchi, Toshiya Tanaka, Toshiyuki Aso
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Publication number: 20120261920Abstract: Provided is a rotary motor actuator capable of simplifying the manufacture and assembly process. A base 22, a table 21, a stator 25 and a rotor 26 of a rotary motor 31 and a first member 12 and a second member 14 of a guide mechanism 24 have a plurality of base segments 22a, a plurality of table segments 21a, a plurality of stator segments 25a, a plurality of rotor segments 26a, a plurality of first member segments 12a and a plurality of second member segments 14, respectively, which all arranged circumferentially around a center line C. The stator segments 25a are connected to the base segments 22a, to which the first member segments 12a are connected. The rotor segments 26a are connected to the table segments 21a, to which the second member segments 14a are connected.Type: ApplicationFiled: September 14, 2010Publication date: October 18, 2012Applicant: THK Co., Ltd.Inventors: Toshiyuki Aso, Tomoyuki Aida, Akihiro Unno, Yuki Hayashi, Ayako Miyajima, Kazuhiro Tani
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Patent number: 8272286Abstract: A linear actuator with a dustproof mechanism provides reliable dustproof capability over the entire stroke of the actuator. A linear actuator 100 with a dustproof mechanism includes a ball screw, a movable stage 4 including a ball screw nut that engages the ball screw, the movable stage capable of making linear reciprocating motion in the axial direction of the ball screw in response to rotary motion of the ball screw, a housing member 2 disposed to cover at least the ball screw, openings 27, 28 formed in the housing member 2 along the path along which the movable stage 4 travels, and dustproof belts 29, 30 disposed inside the housing member 2 to block the openings 27, 28. The linear actuator 100 with a dustproof mechanism further includes end plate covers 105a, 105b that cover both ends of the housing member 2 and hence has high dustproof performance.Type: GrantFiled: August 12, 2008Date of Patent: September 25, 2012Assignee: THK Co., Ltd.Inventors: Toshiyuki Aso, Toshiya Tanaka, Norinobu Ogawa, Toshiaki Mizuno, Minoru Tsukada, Yukitoshi Kobayashi
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Publication number: 20120139455Abstract: A distributed-arrangement linear motor in which stators are arranged in a distributed manner and a method of controlling the distributed-arrangement linear motor are provided. The linear motor 1 is a linear motor in which a stator and a movable member are relatively movable, wherein the stator and the movable member respectively have periodic structures in which plural kinds of poles of the stator and the movable member (12a, 12b, 12c) (22a, 22b, 22c) which magnetically act each other and arranged periodically subsequently in an order according to the arrangement in a direction of the relative motion therebetween; a plurality of stators are arranged in a distributed manner in the direction of the relative motion; a distance D1, D2 between adjacent stators is not more than a length Lmv of the movable member; the pole of the stator is formed of a coil 11; and a current control unit that controls current to be supplied to the coil based on the distance between the stators is provided.Type: ApplicationFiled: August 5, 2010Publication date: June 7, 2012Applicant: THK CO., LTD.Inventors: Toshiro Tojo, Toshiyuki Aso, Yuki Nomura, Akihiro Unno
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Patent number: 8143750Abstract: A compact linear motor is provided which is able to limit a rod, which linearly moves relatively to coils, from revolving. The linear motor comprises a rod (11) equipped with magnets (13), coils (4) surrounding the rod (11), and a housing (5) covering the coils (4), and the rod (11) is made to linearly move relatively to the coils (4) by magnetic fields from the magnets (13) and current made to flow through the coils (4). And the rod (11) comprises an outer circumferential surface on which spline grooves (10a) are formed so as to run along an axial direction of the rod (11). The housing (5) comprises a spline nut (8) that fits the spline grooves (10a) and limits the rod (11) from revolving around an axis line thereof.Type: GrantFiled: August 22, 2006Date of Patent: March 27, 2012Assignee: THK Co., Ltd.Inventors: Toshiyuki Aso, Shuhei Yamanaka