Patents by Inventor Takeshi Tamaki
Takeshi Tamaki 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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Publication number: 20160268855Abstract: There is provided a rotor which can be created at low cost and in a short period of time without decreasing its strength. The rotor includes: a plurality of pole magnetic bodies which are disposed so as to sandwich each of a plurality of permanent magnets around a rotation axis in a circumferential direction; a ring-shaped magnetic body which is radially-inwardly placed relative to the permanent magnets and the pole magnetic bodies; an engaging part which is radially-inwardly formed on the pole magnetic body; and an engaged part which is formed on the ring-shaped magnetic body so as to be engaged with the engaging part. The engaging part and the engaged part are engaged with each other via a non-magnetic material part which consists of a non-magnetic material and is placed in a gap between the engaging part and the engaged part.Type: ApplicationFiled: March 8, 2016Publication date: September 15, 2016Applicant: FANUC CORPORATIONInventor: Takeshi Tamaki
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Patent number: 9369010Abstract: In a stator of an electric motor having a resin molding portion formed in an inner circumferential portion and an outer circumferential portion by means of injection molding, a partition member for partitioning the inner circumferential portion and the outer circumferential portion of the stator is provided in an axial end portion of the stator. Resin injected from the axial end portion flows in a bifurcated passage into the inner circumferential portion and the outer circumferential portion. The partition member may be provided with a resin passage which allows resin to flow from the axial end portion of the stator to the outer circumferential portion.Type: GrantFiled: May 8, 2014Date of Patent: June 14, 2016Assignee: FANUC CORPORATIONInventor: Takeshi Tamaki
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Publication number: 20160006327Abstract: A rotor (10) of a motor includes a rotor core (11) and a plurality of magnets (14a, 14b) which are arranged at a circumferential surface of the rotor core or at the inside of the rotor core, the length of a magnet of the plurality of magnets in the axial direction of the rotor core determined in accordance with the residual magnetic flux density of the magnet. The axial direction length of the magnet is preferably determined by multiplying a reference axial direction length of the magnet with the residual magnetic flux density of the magnet and dividing this by a reference residual magnetic flux density of the magnet.Type: ApplicationFiled: September 14, 2015Publication date: January 7, 2016Applicant: FANUC CORPORATIONInventors: Hidetoshi Uematsu, Takeshi Tamaki
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Publication number: 20150274164Abstract: A lane deviation prevention control apparatus of a vehicle calculates a lane width direction vehicle lateral position and a yaw angle of the vehicle with respect to a lane, calculates, on the basis of the lane width direction vehicle lateral position, the yaw angle, and vehicle speed, a lane deviation predicted time in which the vehicle deviates from the lane, calculates, on the basis of the yaw angle and the lane deviation predicted time, a target yaw moment applied to the vehicle for preventing deviation from the lane, observes a change rate of the target yaw moment, and, when the change rate of the target yaw moment is equal to or larger than a threshold set in advance, limits the change rate of the target yaw moment to be equal to or smaller than a change rate limit value variably set according to at least traveling road information.Type: ApplicationFiled: March 23, 2015Publication date: October 1, 2015Inventors: Takeshi TERAZAWA, Takeshi TAMAKI
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Patent number: 9034095Abstract: An object is to overcome the drawbacks of conventional blue phthalocyanine pigments upon the formation of images, and to develop a blue pigment that can satisfactorily exhibit a greenish blue color high in chroma and excellent in colorfulness, brightness, dispersibility, hue, tinting power and the like and that is applicable to various image recording methods. The object can be achieved by a greenish blue pigment, which exhibits a greenish blue hue of high chroma and contains a pigment represented by the following formula (I): wherein the number, m, of substituent phthalimidomethyl group(s) is in a range of 1.0?m?5.0, and the number, n, of a substituent sulfonic group R1 is in a range of 0.05?n?1.0.Type: GrantFiled: July 19, 2012Date of Patent: May 19, 2015Assignee: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.Inventors: Koji Tsuchiya, Masahiko Aoba, Kenjiro Matsumoto, Takeshi Tamaki
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Publication number: 20150047878Abstract: An electroconductive particle including an electroconductive layer made of copper or a copper alloy, or silver or a silver alloy, and a surface layer made of nickel or a nickel alloy and formed on the electroconductive layer is used. By use of the electroconductive particle obtained such that a surface is coated with hard nickel, and an inner side of a nickel layer is copper or silver having low specific resistance, low resistance and high reliability can be obtained. An electroconductive particle having low resistance and high reliability, a circuit connecting material containing electroconductive particles, a mounting body using a circuit connecting material, and a method for manufacturing a mounting body are provided.Type: ApplicationFiled: March 22, 2013Publication date: February 19, 2015Inventors: Takeshi Tamaki, Yoshito Tanaka
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Publication number: 20140333158Abstract: In a stator of an electric motor having a resin molding portion formed in an inner circumferential portion and an outer circumferential portion by means of injection molding, a partition member for partitioning the inner circumferential portion and the outer circumferential portion of the stator is provided in an axial end portion of the stator. Resin injected from the axial end portion flows in a bifurcated passage into the inner circumferential portion and the outer circumferential portion. The partition member may be provided with a resin passage which allows resin to flow from the axial end portion of the stator to the outer circumferential portion.Type: ApplicationFiled: May 8, 2014Publication date: November 13, 2014Applicant: Fanuc CorporationInventor: Takeshi Tamaki
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Publication number: 20140199870Abstract: A connector for power or braking attached to an electric motor is based on resin molding around a ground pin and a power supply pin. In this connector, an electrical junction between the ground pin and the body of the electric motor or of a brake is disposed in a predetermined position on the inner peripheral side of a sealing portion which seals the interior of the brake or electric motor body from the air.Type: ApplicationFiled: January 9, 2014Publication date: July 17, 2014Applicant: FANUC CorporationInventors: Takeshi TAMAKI, Kouji KOBAYASHI
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Publication number: 20140150692Abstract: An object is to overcome the drawbacks of conventional blue phthalocyanine pigments upon the formation of images, and to develop a blue pigment that can satisfactorily exhibit a greenish blue color high in chroma and excellent in colorfulness, brightness, dispersibility, hue, tinting power and the like and that is applicable to various image recording methods. The object can be achieved by a greenish blue pigment, which exhibits a greenish blue hue of high chroma and contains a pigment represented by the following formula (I): wherein the number, m, of substituent phthalimidomethyl group(s) is in a range of 1.0?m?5.0, and the number, n, of a substituent sulfonic group R1 is in a range of 0.05?n?1.0.Type: ApplicationFiled: July 19, 2012Publication date: June 5, 2014Applicant: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.Inventors: Koji Tsuchiya, Masahiko Aoba, Kenjiro Matsumoto, Takeshi Tamaki
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Patent number: 8729760Abstract: In accordance with the present invention, a rotor of an electric motor including a rotor core, a plurality of magnets spaced apart from each other on an outer circumferential surface of the rotor core, and a cylindrical protective pipe surrounding the magnets is provided. The protective pipe has an inner diameter smaller than a diameter of a circumscribed circle passing through tops of outer surfaces of the magnets. A space defined by an inner surface of the protective pipe, the outer surfaces of the magnets and the outer surface of the rotor core is filled with resin, and the protective pipe is held so as to have a diameter larger than that of the circumscribed circle, due to injection pressure of the resin.Type: GrantFiled: February 7, 2013Date of Patent: May 20, 2014Assignee: FANUC CorporationInventors: Kouji Kobayashi, Takeshi Tamaki
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Publication number: 20140117789Abstract: A rotor (10) of a motor includes a rotor core (11) and a plurality of magnets (14a, 14b) which are arranged at a circumferential surface of the rotor core or at the inside of the rotor core, the length of a magnet of the plurality of magnets in the axial direction of the rotor core determined in accordance with the residual magnetic flux density of the magnet. The axial direction length of the magnet is preferably determined by multiplying a reference axial direction length of the magnet with the residual magnetic flux density of the magnet and dividing this by a reference residual magnetic flux density of the magnet.Type: ApplicationFiled: October 31, 2013Publication date: May 1, 2014Applicant: FANUC CORPORATIONInventors: Hidetoshi Uematsu, Takeshi Tamaki
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ROTOR FOR ELECTRIC MOTOR INCLUDING ROTATIONAL SHAFT AND YOKE SECURELY FITTED ON THE ROTATIONAL SHAFT
Publication number: 20130234557Abstract: According to the present invention, in a rotor of an electric motor including a rotational shaft and a yoke fitted on an outer circumferential surface of the rotational shaft, fitting between an inner circumferential surface of the yoke and the outer circumferential surface of the rotational shaft is interference fit. Further, fitting between a convex portion (or concave portion) formed on the outer circumferential surface of the rotational shaft and a concave portion (or convex portion) formed on the inner circumferential surface of the yoke is also interference fit.Type: ApplicationFiled: February 28, 2013Publication date: September 12, 2013Applicant: FANUC CORPORATIONInventors: Kouji KOBAYASHI, Takeshi TAMAKI -
Patent number: 7646125Abstract: A rotor of an electric motor, including a rotor core having a plurality of magnet-retaining apertures, a plurality of permanent magnets individually received and retained in the magnet-retaining apertures of the rotor core, and a resinous filler filling a gap defined between each magnet-retaining aperture and each permanent magnet and fixing the permanent magnets to the magnet-retaining apertures. The rotor also includes an engaging projection provided in the rotor core, the engaging projection tightly engaged with each of the permanent magnets received in the magnet-retaining apertures and temporarily holding each permanent magnet at a predetermined position in a corresponding magnet-retaining aperture, in an unfinished state of the rotor where the resinous filler is not arranged in the gap.Type: GrantFiled: December 20, 2006Date of Patent: January 12, 2010Assignee: Fanuc LtdInventors: Takashi Okamoto, Takuya Maeda, Makoto Funakubo, Takeshi Tamaki
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Patent number: 7500848Abstract: A mold used in a manufacturing process of a rotor of an electric motor, the rotor including a rotor core with a plurality of magnet-retaining apertures and a plurality of permanent magnets individually retained in the magnet-retaining apertures of the rotor core, for pouring a resinous material into gaps defined between the magnet-retaining apertures and the permanent magnets. The mold includes a cavity for accommodating the rotor core at a predetermined position, with the rotor core receiving the permanent magnets individually in the magnet-retaining apertures; and a deformation inhibiting surface provided in the cavity and coming into at least local contact with an outer circumferential surface of the rotor core, during a period when the resinous material is poured into the gaps, to inhibit the bulging deformation of the outer circumferential surface.Type: GrantFiled: November 29, 2006Date of Patent: March 10, 2009Assignee: Fanuc LtdInventors: Takuya Maeda, Takashi Okamoto, Makoto Funakubo, Takeshi Tamaki
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Publication number: 20070145849Abstract: A rotor of an electric motor, including a rotor core having a plurality of magnet-retaining apertures, a plurality of permanent magnets individually received and retained in the magnet-retaining apertures of the rotor core, and a resinous filler filling a gap defined between each magnet-retaining aperture and each permanent magnet and fixing the permanent magnets to the magnet-retaining apertures. The rotor also includes an engaging projection provided in the rotor core, the engaging projection tightly engaged with each of the permanent magnets received in the magnet-retaining apertures and temporarily holding each permanent magnet at a predetermined position in a corresponding magnet-retaining aperture, in an unfinished state of the rotor where the resinous filler is not arranged in the gap.Type: ApplicationFiled: December 20, 2006Publication date: June 28, 2007Applicant: FANUC LTDInventors: Takashi OKAMOTO, Takuya MAEDA, Makoto FUNAKUBO, Takeshi TAMAKI
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Publication number: 20070134368Abstract: A mold used in a manufacturing process of a rotor of an electric motor, the rotor including a rotor core with a plurality of magnet-retaining apertures and a plurality of permanent magnets individually received and retained in the magnet-retaining apertures of the rotor core, for pouring a resinous material into gaps defined between the respective magnet-retaining apertures and the respective permanent magnets. The mold includes a cavity for accommodating the rotor core at a predetermined position, with the rotor core receiving the plurality of permanent magnets individually in the plurality of magnet-retaining apertures; and an adjustable support mechanism for securely supporting the rotor core accommodated in the cavity in a manner as to meet a dimensional deviation in an axial direction of the rotor core.Type: ApplicationFiled: December 7, 2006Publication date: June 14, 2007Applicant: FANUC LTDInventors: Takashi OKAMOTO, Takuya MAEDA, Makoto FUNAKUBO, Takeshi TAMAKI
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Publication number: 20070128307Abstract: A mold used in a manufacturing process of a rotor of an electric motor, the rotor including a rotor core with a plurality of magnet-retaining apertures and a plurality of permanent magnets individually retained in the magnet-retaining apertures of the rotor core, for pouring a resinous material into gaps defined between the magnet-retaining apertures and the permanent magnets. The mold includes a cavity for accommodating the rotor core at a predetermined position, with the rotor core receiving the permanent magnets individually in the magnet-retaining apertures; and a deformation inhibiting surface provided in the cavity and coming into at least local contact with an outer circumferential surface of the rotor core, during a period when the resinous material is poured into the gaps, to inhibit the bulging deformation of the outer circumferential surface.Type: ApplicationFiled: November 29, 2006Publication date: June 7, 2007Applicant: FANUC LTDInventors: Takuya MAEDA, Takashi OKAMOTO, Makoto FUNAKUBO, Takeshi TAMAKI
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Patent number: 5763978Abstract: An insulating member (10), which is disposed in each of slots (20) in a stator core (16) of a motor in order to insulate electrically the core (16) and windings (22) set in the slots (20), comprises a main insulating section 30, which covers the inner wall surface of the slot (20), and auxiliary insulating sections (32) having desired flexibility and flexural repulsiveness to substantially close and opening (26) of the slot. The auxiliary insulating sections (32) are easily deformed to allow the slot opening (26) to open partially when it is subjected to an external force, and are restored to their original state such that the opening (26) is closed when the external force is removed.Type: GrantFiled: December 2, 1996Date of Patent: June 9, 1998Assignee: Fanuc Ltd.Inventors: Hiroyuki Uchida, Tomonaga Yamamoto, Takeshi Tamaki
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Patent number: 5563378Abstract: A cable clamp for clamping a motor cable includes a fixing member having a pair of bottom plates. The bottom plates are placed in parallel to each other to thereby define an opening. A pair of guide members are also placed in parallel to each other and bridge the bottom plates to further limit the opening. The motor cable is then received through the opening. A slide member slides along the pair of guide members to thereby clamp the cable. The bottom plates may optionally include a depression near the opening which defines a recess. A waterproof adhesive may be disposed within the recess to thereby form a watertight barrier.Type: GrantFiled: November 4, 1994Date of Patent: October 8, 1996Assignee: Fanuc, Ltd.Inventors: Hiroyuki Uchida, Tomonaga Yamamoto, Takeshi Tamaki