Patents by Inventor Atsushi Kawahara
Atsushi Kawahara 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: 20240318701Abstract: A first annular groove is filled with a material of a solenoid case and a first joined portion is formed after a second annular groove is filled with the material of the solenoid case and a second joined portion is formed. This allows a load applied to a piston rod when the material of the solenoid case flows into the first annular groove to be partially received by the second joined portion, thereby contributing to reducing a reaction force received by the piston rod and thus preventing the deformation of an upper-end portion of the piston rod due to the reaction force received by the piston rod.Type: ApplicationFiled: July 22, 2022Publication date: September 26, 2024Inventors: Masato HIGUMA, Atsushi KOSHIZAKA, Keiji KAWAHARA, Yu ISHIMARU
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Publication number: 20240189949Abstract: The present invention provides a welding electrode capable of spot-welding a workpiece having a surface oxide film with stable welding quality, the welding electrode allowing general tip dressers to be used. The welding electrode of the present invention is used for spot welding of a workpiece. The welding electrode includes an end face provided so as to contact the workpiece, and at least one elongated groove provided in the end face or a plurality of blind holes provided in the end face. A depth of the groove or a depth of the blind holes is 0.5 mm or more and 20 mm or less. A ratio (d/w) of the depth d of the groove to a width w of the groove or a ratio (d/s) of the depth d of the blind holes to a size s of the blind holes is 2 or more.Type: ApplicationFiled: February 16, 2022Publication date: June 13, 2024Inventors: Masakazu SHIBAHARA, Kazuki IKUSHIMA, Ryoma TANAKA, Atsushi KAWAHARA
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Patent number: 11898923Abstract: A residual stress distribution measuring method of the present invention is characterized by comprising: by using an analytical model in which a cut-surface is interpolated to a cross section of a metal member, the step of calculating a residual force vector that is a sum of a load vector acting on a first metal piece at the cut-surface and a load vector acting on a second metal piece at the cut-surface; the step of calculating, as a modified displacement vector, an amount of movement at the cross section by interpolating the residual force vector as a forced load to the cross section of an analytical model of the metal member; by using an analytical model having the shape of a cut-surface of a measured first or second metal piece, the step of modifying the shape of the cut-surface of the first or the second metal piece on the basis of the calculated modified displacement vector; and by using the analytical model in which the shape of the cut-surface of the first or the second metal piece is modified, theType: GrantFiled: August 22, 2019Date of Patent: February 13, 2024Assignee: UNIVERSITY PUBLIC CORPORATION OSAKAInventors: Masakazu Shibahara, Kazuki Ikushima, Atsushi Kawahara, Yoshitaka Kawajiri, Yui Okimi
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Publication number: 20220018724Abstract: A residual stress distribution measuring method of the present invention is characterized by comprising: by using an analytical model in which a cut-surface is interpolated to a cross section of a metal member, the step of calculating a residual force vector that is a sum of a load vector acting on a first metal piece at the cut-surface and a load vector acting on a second metal piece at the cut-surface; the step of calculating, as a modified displacement vector, an amount of movement at the cross section by interpolating the residual force vector as a forced load to the cross section of an analytical model of the metal member; by using an analytical model having the shape of a cut-surface of a measured first or second metal piece, the step of modifying the shape of the cut-surface of the first or the second metal piece on the basis of the calculated modified displacement vector; and by using the analytical model in which the shape of the cut-surface of the first or the second metal piece is modified, theType: ApplicationFiled: August 22, 2019Publication date: January 20, 2022Inventors: Masakazu SHIBAHARA, Kazuki IKUSHIMA, Atsushi KAWAHARA, Yoshitaka KAWAJIRI, Yui OKIMI
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Publication number: 20200331102Abstract: A displacement/stress computation unit computes residual stress and deformation by conducting a thermal-elastic-plastic analysis using idealized explicit FEM. A temperature increment is set in magnitude to have a value larger in magnitude than a temperature increment used in a thermal-elastic-plastic analysis using static implicit FEM. Heating is performed for each plurality of blocks according to a heating pattern in which blocks that are not adjacent to one another are simultaneously heated. Each block is heated with a surface heat source having a heat input quantity adjusted with respect to a heat input quantity applied when a moving heat source is used to heat the block.Type: ApplicationFiled: September 7, 2018Publication date: October 22, 2020Inventors: Masakazu Shibahara, Kazuki Ikushima, Atsushi Kawahara, Rino Takeuchi, Hikaru Hashizume
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Patent number: 10287688Abstract: A plating method has an electroless plating step for forming a conductive coating on a non-conductive substrate and an electrolytic plating step for forming a metallic coating on the conductive coating by using an auxiliary electrode. In the electroless plating step, with the position of the auxiliary electrode adjusted in relation to the non-conductive substrate, the non-conductive substrate and the auxiliary electrode are both immersed in an electroless plating solution to form the conductive coating. In the electrolytic plating step, with the position of the auxiliary electrode adjusted in relation to the non-conductive substrate, the non-conductive substrate and the auxiliary electrode are both immersed in an electrolytic plating solution to form the metallic coating. In the electroless plating step, electric current is applied by using the auxiliary electrode as an anode and a conductive member immersed in the electroless plating solution as a cathode.Type: GrantFiled: February 24, 2016Date of Patent: May 14, 2019Assignee: TOYODA GOSEI CO., LTD.Inventors: Takao Hiei, Atsushi Kawahara
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Patent number: 10067427Abstract: Provided is a holding device for vacuum-attracting and holding a substrate, the device comprising: an attracting unit configured to have attraction mechanisms; and a control unit configured to control the attracting unit, wherein the control unit is configured: to acquire a sequence for attracting the substrate and reference data for determining whether the substrate has been successfully attracted, from time-dependent variation in pressure in an attraction mechanism in a case where the substrate is held by the attraction mechanisms; to control the attracting unit to hold a first substrate based on the sequence and to acquire measurement data that indicates time-dependent variation in pressure in the attraction mechanism in a case where the first substrate is held; and to compare the reference data and the measurement data, and to control the attracting unit to hold a second substrate based on the sequence if a comparison result satisfies a predetermined condition.Type: GrantFiled: March 23, 2017Date of Patent: September 4, 2018Assignee: CANON KABUSHIKI KAISHAInventor: Atsushi Kawahara
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Publication number: 20170277039Abstract: Provided is a holding device for vacuum-attracting and holding a substrate, the device comprising: an attracting unit configured to have attraction mechanisms; and a control unit configured to control the attracting unit, wherein the control unit is configured: to acquire a sequence for attracting the substrate and reference data for determining whether the substrate has been successfully attracted, from time-dependent variation in pressure in an attraction mechanism in a case where the substrate is held by the attraction mechanisms; to control the attracting unit to hold a first substrate based on the sequence and to acquire measurement data that indicates time-dependent variation in pressure in the attraction mechanism in a case where the first substrate is held; and to compare the reference data and the measurement data, and to control the attracting unit to hold a second substrate based on the sequence if a comparison result satisfies a predetermined condition.Type: ApplicationFiled: March 23, 2017Publication date: September 28, 2017Inventor: Atsushi Kawahara
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Patent number: 9575413Abstract: An exposure apparatus sequentially performs exposure in each of a plurality of underlying shot regions formed on a substrate and includes a controller. The controller is configured to judge, for each of the plurality of shot regions, whether to perform one-shot exposure without dividing the shot region or divided exposure, based on information of respective shapes of the plurality of shot regions, determine a shape of each partial region in the shot region in which the divided exposure is to be performed, and control the exposure so as to perform the one-shot exposure or the divided exposure in each of the plurality of shot regions based on a result of the judgment and the determined shape of each partial region.Type: GrantFiled: May 19, 2015Date of Patent: February 21, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Takuro Tsujikawa, Atsushi Kawahara, Issei Funayoshi, Shinichi Egashira
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Patent number: 9564780Abstract: A rotary electric machine is provided, which includes a rotor core, a plurality of permanent magnets embedded in the rotor core, and a stator core arranged so as to oppose to the rotor core. The plurality of permanent magnets include a pair of first permanent magnets. The pair of first permanent magnets are arranged so that first magnetic poles thereof having the same polarity oppose to each other and are separated from each other on both sides of a magnetic path of d-axis by a predetermined distance. The rotor core includes gaps formed within the magnetic path of the d-axis.Type: GrantFiled: February 27, 2015Date of Patent: February 7, 2017Assignee: KABUSHIKI KAISHA YASKAWA DENKIInventors: Yukio Tsutsui, Atsushi Kawahara, Motomichi Ohto
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Publication number: 20160258066Abstract: A plating method has an electroless plating step for forming a conductive coating on a non-conductive substrate and an electrolytic plating step for forming a metallic coating on the conductive coating by using an auxiliary electrode. In the electroless plating step, with the position of the auxiliary electrode adjusted in relation to the non-conductive substrate, the non-conductive substrate and the auxiliary electrode are both immersed in an electroless plating solution to form the conductive coating. In the electrolytic plating step, with the position of the auxiliary electrode adjusted in relation to the non-conductive substrate, the non-conductive substrate and the auxiliary electrode are both immersed in an electrolytic plating solution to form the metallic coating. In the electroless plating step, electric current is applied by using the auxiliary electrode as an anode and a conductive member immersed in the electroless plating solution as a cathode.Type: ApplicationFiled: February 24, 2016Publication date: September 8, 2016Inventors: Takao HIEI, Atsushi KAWAHARA
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Publication number: 20150338746Abstract: An exposure apparatus sequentially performs exposure in each of a plurality of underlying shot regions formed on a substrate and includes a controller. The controller is configured to judge, for each of the plurality of shot regions, whether to perform one-shot exposure without dividing the shot region or divided exposure, based on information of respective shapes of the plurality of shot regions, determine a shape of each partial region in the shot region in which the divided exposure is to be performed, and control the exposure so as to perform the one-shot exposure or the divided exposure in each of the plurality of shot regions based on a result of the judgment and the determined shape of each partial region.Type: ApplicationFiled: May 19, 2015Publication date: November 26, 2015Inventors: Takuro Tsujikawa, Atsushi Kawahara, Issei Funayoshi, Shinichi Egashira
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Publication number: 20150326101Abstract: This disclosure discloses a rotary electric machine including a magnetic body and a rotor core. The magnetic body includes at least a first columnar part, a second columnar part and a third columnar part. The rotor core includes an outer peripheral part, a first inner peripheral part, a second inner peripheral part, a first connecting part and a second connecting part. The first inner peripheral part is capable of facing a radial outer side of the first columnar part. The second inner peripheral part is capable of facing a radial outer side of the second columnar part.Type: ApplicationFiled: July 7, 2015Publication date: November 12, 2015Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Toshiyuki ISHIBASHI, Takaaki ISHII, Atsushi KAWAHARA, Sohei OGA
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Publication number: 20150171678Abstract: A rotary electric machine is provided, which includes a rotor core, a plurality of permanent magnets embedded in the rotor core, and a stator core arranged so as to oppose to the rotor core. The plurality of permanent magnets include a pair of first permanent magnets. The pair of first permanent magnets are arranged so that first magnetic poles thereof having the same polarity oppose to each other and are separated from each other on both sides of a magnetic path of d-axis by a predetermined distance. The rotor core includes gaps formed within the magnetic path of the d-axis.Type: ApplicationFiled: February 27, 2015Publication date: June 18, 2015Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Yukio TSUTSUI, Atsushi KAWAHARA, Motomichi OHTO
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Publication number: 20130033125Abstract: A linear motor armature according to embodiments includes an armature core, supporting teeth, and a detecting unit. The armature core includes main teeth. The supporting teeth are provided on stroke direction ends of the armature core. The detecting unit detects a position of the armature core. Moreover, the detecting unit is provided at a position overlapping with the supporting teeth in the stroke direction.Type: ApplicationFiled: December 12, 2011Publication date: February 7, 2013Applicant: Kabushiki Kaisha Yaskawa DenkiInventors: Seigo NAGAMATSU, Yasuaki Kamiki, Atsushi Kawahara, Kazuya Yugawa, Keiji Yanagi
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Patent number: 8330949Abstract: A foreign substance inspection apparatus includes a light projecting unit, a detector which detects the intensity of scattered light of light projected onto the surface of an object to be detected by the light projecting unit, in association with the two-dimensional coordinate position on the surface, and a processing unit. The relationship between the intensity of the scattered light detected by the detector and the particle size of the foreign substance differs depending on the two-dimensional coordinate position on the surface. The processing unit determines, a conversion curve to convert the intensity of the scattered light detected by the detector into the particle size of the foreign substance, in accordance with the two-dimensional coordinate position of the foreign substance detected by the detector, and converts the intensity of the scattered light detected by the detector into the particle size of the foreign substance using the determined conversion curve.Type: GrantFiled: August 30, 2010Date of Patent: December 11, 2012Assignee: Canon Kabushiki KaishaInventor: Atsushi Kawahara
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Patent number: 8173192Abstract: The invention provides a W1/O/W2 type composite emulsified dressing characterized in that it comprises a polyglycerol polyricinoleate having a degree of esterification of 10-30% and a degree of ricinoleic acid-condensation of 5-8 and that it has a viscosity of 1,000-300,000 mPa·s, and a method for the preparation of the dressing which comprises the steps of 90-10 parts by mass of an aqueous phase (W1) is mixed with 10-90 parts by mass of an oily phase (O) to thus form a W1/O type emulsion and then 100 parts by mass of the resulting W1/O type emulsion is blended with 25-150 parts by mass of an aqueous phase (W2) to thus give a W1/O/W2 type composite emulsified dressing, wherein the dressing comprises a polyglycerol polyricinoleate having a degree of esterification of 10-30% and a degree of ricinoleic acid-condensation of 5-8, in an amount ranging from 0.01-5% by mass on the basis of the total mass of the W1/O/W2 type composite emulsified dressing. The dressing are quite excellent in their storage stability.Type: GrantFiled: April 14, 2008Date of Patent: May 8, 2012Assignees: Knorr Foods Co., Ltd., Ajinomoto Co., Inc.Inventors: Jiro Taki, Takashi Isomura, Kazumichi Kanda, Atsushi Kawahara, Kentaro Maruyama, Soichiro Kusumoto
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Patent number: 8059269Abstract: A particle inspection apparatus includes an irradiation unit configured to apply a light beam onto front and back surfaces of an object to be inspected, first and second detection units configured to detect scattering light from the surfaces, a calculation unit configured to conduct a particle inspection on the surfaces on the basis of outputs from the detection units, and a control unit configured to control the irradiation unit, the detection units, and the calculation unit. The irradiation unit can selectively apply the beam onto the front or back surface. The control unit causes the calculation unit to conduct the particle inspection on the inspection surface on which the light beam is selectively applied, on the basis of outputs made by the detection unit corresponding to simultaneous application and selective application of the light beam.Type: GrantFiled: July 6, 2010Date of Patent: November 15, 2011Assignee: Canon Kabushiki KaishaInventor: Atsushi Kawahara
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Publication number: 20110219989Abstract: A linear motor includes a field magnet unit, an armature unit, and a connecting unit. The field magnet unit includes a first field magnet yoke and a second field magnet yoke each of which has an odd number of permanent magnets arranged thereon in a longitudinal direction such that polarities of the permanent magnets are alternately different, where the first field magnet yoke and the second field magnet yoke are arranged such that respective permanent magnets are opposite to each other and that polarities of the opposite permanent magnets are different from each other. The armature unit is wound with a winding and is arranged between the first field magnet yoke and the second field magnet yoke. The connecting unit is configured by a magnetic substance and connects the first field magnet yoke and the second field magnet yoke. One of the field magnet unit and the armature unit moves relatively to the other.Type: ApplicationFiled: March 8, 2011Publication date: September 15, 2011Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Kazuya YUGAWA, Atsushi Kawahara, Seigo Nagamatsu
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Patent number: 7936452Abstract: An inspection apparatus includes a projecting unit, a first receiving unit, a second receiving unit, and a controller. The projection unit is configured to project linear light on a surface of an object. The first and second receiving units are configured to receive scattered light of the projected linear light. The controller is configured to scan the projecting unit, the first and second receiving units and determine the present or absence of a foreign substance on the surface based on intensity distribution signals output from the first and second receiving units.Type: GrantFiled: July 20, 2009Date of Patent: May 3, 2011Assignee: Canon Kabushiki KaishaInventor: Atsushi Kawahara