Patents by Inventor Kazuyoshi Saito
Kazuyoshi Saito 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: 20240038427Abstract: A superconducting coil device according to one embodiment of the present invention includes: A superconducting coil device including: a bobbin having a tubular body; superconducting wires, a part of which constitutes a wound portion where the superconducting wires are wound on the bobbin; a bobbin-side guide portion holding the superconducting wires extending from the bobbin, the bobbin-side guide portion being provided to extend in a bobbin axial direction, which is an axial direction of the body of the bobbin; a first guide portion holding the superconducting wires extending from the bobbin-side guide portion, the first guide portion being arranged on an outer side of the bobbin-side guide portion in a direction intersecting the bobbin axial direction and provided to extend in the direction intersecting the bobbin axial direction; and a second guide portion capable of holding the superconducting wires extending from the first guide portion, the second guide portion being provided to extend in a direction inType: ApplicationFiled: October 11, 2021Publication date: February 1, 2024Applicants: JAPAN SUPERCONDUCTOR TECHNOLOGY INC., RIKEN, SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Masatoshi YOSHIKAWA, Yasuyuki MIYOSHI, Mamoru HAMADA, Kazuyoshi SAITO, Yoshinori YANAGISAWA, Renzhong PIAO, Kotaro OHKI, Takashi YAMAGUCHI, Tatsuoki NAGAISHI
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Publication number: 20220185202Abstract: A long belt molding including: a molding main body including vehicle interior and exterior lateral wall portions, a top wall portion, a design lip, and a vehicle interior lip; and an end cap attached to an end of the molding main body and including a lid portion, a cover portion, and a base portion, wherein the base portion extends from the lid portion and is at least partially fixed to a vehicle-interior-side surface of the vehicle interior lateral wall portion, and the cover portion protrudes obliquely downward toward the vehicle interior lip from at least a part of an upper end of the base portion and, in a state where the belt molding is mounted on a door panel, at least a part of the cover portion is in contact with the vehicle interior lip to close a gap between the design lip and the vehicle interior lip.Type: ApplicationFiled: December 8, 2021Publication date: June 16, 2022Applicants: TOKAI KOGYO CO., LTD., HONDA MOTOR CO., LTD.Inventors: Nobufumi UI, Kazuyoshi SAITO, Takayuki KAWAI, Kazuaki HIWATASHI
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Patent number: 9776019Abstract: A particle beam therapy system is disclosed which includes: a synchrotron accelerating a charged particle beam injected from a pre-accelerator up to a predetermined energy level before applying a high-frequency voltage to an extraction device to extract the charged particle beam caused to exceed a stability limit; a beam transportation system transporting the charged particle beam extracted from the synchrotron up to a treatment room, and an irradiation device irradiating a patient in the treatment room with the charged particle beam in conformity to the patient's tumor shape. The synchrotron has functionality to accelerate or decelerate the charged particle beam successively to extract the charged particle beam at a plurality of energy levels during an extraction phase of the synchrotron, the beam transportation system further having functionality to block off an unnecessary charged particle beam extracted from the synchrotron during acceleration or deceleration.Type: GrantFiled: December 18, 2013Date of Patent: October 3, 2017Assignee: Hitachi, Ltd.Inventors: Kazuyoshi Saito, Takuya Nomura, Hideaki Nishiuchi
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Patent number: 9422974Abstract: A fluid bearing apparatus includes a stationary member and a rotating member. A bearing surface of the stationary member and a bearing surface of the rotating member are arranged opposite to each other with a minute gap intervening therebetween. A lubricating fluid is arranged in the minute gap. At least one of the bearing surfaces includes a dynamic pressure groove, and a plurality of striations defined in a bottom portion of the dynamic pressure groove. Each of the dynamic pressure groove and the striations is arranged to extend in a direction at an angle greater than 0° to a circumferential direction. An angle defined between each striation and the circumferential direction is equal to or smaller than an angle defined between the dynamic pressure groove and the circumferential direction. Thus, an improvement in a force of dynamic pressure at the dynamic pressure groove is achieved.Type: GrantFiled: August 11, 2015Date of Patent: August 23, 2016Assignee: NIDEC CORPORATIONInventors: Kazuyoshi Saito, Mitsuo Kodama, Junya Mizukami, Yuichi Shigematsu
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Publication number: 20160153490Abstract: A fluid bearing apparatus includes a stationary member and a rotating member. A bearing surface of the stationary member and a bearing surface of the rotating member are arranged opposite to each other with a minute gap intervening therebetween. A lubricating fluid is arranged in the minute gap. At least one of the bearing surfaces includes a dynamic pressure groove, and a plurality of striations defined in a bottom portion of the dynamic pressure groove. Each of the dynamic pressure groove and the striations is arranged to extend in a direction at an angle greater than 0° to a circumferential direction. An angle defined between each striation and the circumferential direction is equal to or smaller than an angle defined between the dynamic pressure groove and the circumferential direction. Thus, an improvement in a force of dynamic pressure at the dynamic pressure groove is achieved.Type: ApplicationFiled: August 11, 2015Publication date: June 2, 2016Inventors: Kazuyoshi SAITO, Mitsuo KODAMA, Junya MIZUKAMI, Yuichi SHIGEMATSU
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Patent number: 8989219Abstract: When a transmission rate of each of lines that transmit data simultaneously between two STAs by using a plurality of radio channels and/or MIMO can be set independently, one data frame is fragmented in accordance with the transmission rates of the respective lines so as to generate a plurality of data packets having the same packet time length and data sizes equal to or smaller than a maximum data size. Those data packets are transmitted simultaneously by using a plurality of radio channels, or one radio channel and MIMO, or a plurality of radio channels and MIMO.Type: GrantFiled: April 18, 2011Date of Patent: March 24, 2015Assignee: Nippon Telegraph and Telephone CorporationInventors: Kengo Nagata, Tomoaki Kumagai, Shinya Otsuki, Kazuyoshi Saito, Satoru Aikawa, Akinori Hirukawa, Atsushi Ohta
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Patent number: 8989108Abstract: In retransmission processing due to a failure of transmission of data packets, a plurality of data packets are simultaneously transmitted between two STAs by utilizing multiple wireless channels and MIMO, and the number of idle channels and the number of retransmission packets are compared. Then, when both of the numbers are different or only when the number of idle channels is larger than the number of retransmission packets, the retransmission packets are reconstructed according to the number of idle channels, and the reconstructed retransmission packets are simultaneously transmitted by using the idle channels.Type: GrantFiled: May 16, 2011Date of Patent: March 24, 2015Assignee: Nippon Telegraph and Telephone CorporationInventors: Kengo Nagata, Tomoaki Kumagai, Shinya Otsuki, Kazuyoshi Saito, Satoru Aikawa, Atsushi Ohta, Akinori Hirukawa
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Publication number: 20140187844Abstract: A particle beam therapy system is disclosed which includes: a synchrotron accelerating a charged particle beam injected from a pre-accelerator up to a predetermined energy level before applying a high-frequency voltage to an extraction device to extract the charged particle beam caused to exceed a stability limit; a beam transportation system transporting the charged particle beam extracted from the synchrotron up to a treatment room, and an irradiation device irradiating a patient in the treatment room with the charged particle beam in conformity to the patient's tumor shape. The synchrotron has functionality to accelerate or decelerate the charged particle beam successively to extract the charged particle beam at a plurality of energy levels during an extraction phase of the synchrotron, the beam transportation system further having functionality to block off an unnecessary charged particle beam extracted from the synchrotron during acceleration or deceleration.Type: ApplicationFiled: December 18, 2013Publication date: July 3, 2014Applicant: Hitachi, Ltd.Inventors: Kazuyoshi SAITO, Takuya NOMURA, Hideaki NISHIUCHI
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Patent number: 8508884Abstract: A spindle motor includes a stationary portion and a rotating portion. The rotating portion includes a magnet arranged around a central axis extending in a vertical direction. The stationary portion includes a base member and a magnetic member arranged below the magnet and fixed to the base member. The base member includes an upper surface extending out perpendicularly or substantially perpendicularly to the central axis, and a wall surface extending in an axial direction. The magnetic member includes an annular plate portion arranged on the base member and a projecting portion arranged to extend downward from the plate portion. At least a portion of the projecting portion is arranged to be in contact with the wall surface. An adhesive is arranged between the plate portion and the upper surface of the base member and between the projecting portion and the wall surface.Type: GrantFiled: December 5, 2012Date of Patent: August 13, 2013Assignee: Nidec CorporationInventors: Yoichi Sekii, Hirokazu Shirai, Junya Mizukami, Kazuyoshi Saito, Hideki Nishimura, Atsushi Yawata
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Patent number: 8358483Abstract: A stationary portion of a spindle motor includes a base member and a magnetic member. The magnetic member is arranged below a magnet and fixed to the base member. The magnetic member includes an annular plate portion arranged on an upper surface of the base member, and a projecting portion arranged to extend from the plate portion in an axial direction. At least a portion of the projecting portion is press fitted to a wall surface of the base member.Type: GrantFiled: September 1, 2010Date of Patent: January 22, 2013Assignee: Nidec CorporationInventors: Yoichi Sekii, Hirokazu Shirai, Junya Mizukami, Kazuyoshi Saito, Hideki Nishimura, Atsushi Yawata
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Patent number: 8253113Abstract: A charged particle beam irradiation system includes a synchrotron which accelerates an ion beam, an irradiation apparatus for irradiating an object with the ion beam introduced from the synchrotron, detection means for measuring an amount of accumulated charge of the ion beam that orbits in the synchrotron immediately before an extraction control period in an operating cycle of the synchrotron, and beam extraction control means for controlling extraction of the ion beam based on the measurement result of the accumulated beam charge amount so that extraction of a total amount of the ion beam is to be completed with an expiration of an extraction control time, the extraction control time representing a length of the extraction control period of the synchrotron and being set in advance.Type: GrantFiled: June 24, 2009Date of Patent: August 28, 2012Assignee: Hitachi, Ltd.Inventors: Hideaki Nishiuchi, Kazuyoshi Saito, Masahiro Tadokoro, Hiroshi Akiyama, Kazuo Hiramoto
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Patent number: 8240920Abstract: Channels and gaps inside a bearing mechanism are filled with lubricating oil, and the lubricating oil is retained in a first tapered seal portion arranged radially outward of a sleeve, and a second tapered seal portion arranged between the shaft and an upper cap placed above the sleeve. An arrangement of groove-shaped recessed portions on an inner circumferential surface of the upper cap and raised portions on a lower surface of a top portion thereof contributes to increasing a channel cross-sectional area of a channel provided between the upper cap and the sleeve to connect the first tapered seal portion with the second tapered seal portion.Type: GrantFiled: May 12, 2008Date of Patent: August 14, 2012Assignee: Nidec CorporationInventors: Yoichi Sekii, Kazuyoshi Saito, Hisaya Nakagawa
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Patent number: 8227775Abstract: A particle beam therapy system includes a synchrotron which accelerates beams of charged particles to a desired energy level and permits extraction of the beams of charged particles exceeding a stability limit, an irradiation device which irradiates an object with the beams of charged particles, a beam transport system which conducts the beams of charged particles extracted from the synchrotron to the irradiation device, and a control unit which provides control to remove part of the beams of charged particles circling in the synchrotron and allow the rest of the circling beams of charged particles to be extracted from the synchrotron and conducted to the irradiation device. The particle beam therapy system produces irradiation beams suitable for high-precision particle beam therapy by the spot scanning method or the like.Type: GrantFiled: October 16, 2008Date of Patent: July 24, 2012Assignee: Hitachi, Ltd.Inventors: Kazuyoshi Saito, Hiroaki Sakurabata
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Patent number: 8153990Abstract: A particle beam therapy system that is capable of irradiating a target area with an irradiation beam suitable for a particle beam therapy using a spot scanning method includes a synchrotron, a beam transport system and an irradiation device. The beam transport system is provided with a beam interrupting device adapted to block supply of a charged particle beam to the irradiation device. The beam interrupting device has a beam shielding magnet, an exciting power supply for the beam shielding magnet and a beam dump. The beam transport system has a bending magnet. The beam shielding magnet is provided on an inlet side of the bending magnet. The beam dump is provided on an outlet side of the bending magnet. A controller controls the exciting power supply to control the timing of an operation of the beam shielding magnet.Type: GrantFiled: April 21, 2009Date of Patent: April 10, 2012Assignee: Hitachi, Ltd.Inventor: Kazuyoshi Saito
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Patent number: 8148862Abstract: A bearing device includes a shaft, a sleeve and a thrust plate. The shaft includes a convex portion having a curved surface provided at one end thereof. The sleeve includes an inner circumferential surface opposed to an outer circumferential surface of the shaft. The thrust plate includes a concave portion having a curved surface and arranged to make contact with the convex portion of the shaft. The shaft is supported by the sleeve and the thrust plate such that it may rotate about the central axis with respect to the sleeve and the thrust plate. A curvature radius of the concave portion is greater than a curvature radius of the convex portion but equal to or smaller than about 2.0 times of the curvature radius of the convex portion.Type: GrantFiled: December 2, 2009Date of Patent: April 3, 2012Assignee: Nidec CorporationInventors: Hirokazu Shirai, Kazuyoshi Saito, Shigeki Nakatani
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Publication number: 20110216728Abstract: In retransmission processing due to a failure of transmission of data packets, a plurality of data packets are simultaneously transmitted between two STAs by utilizing multiple wireless channels and MIMO, and the number of idle channels and the number of retransmission packets are compared. Then, when both of the numbers are different or only when the number of idle channels is larger than the number of retransmission packets, the retransmission packets are reconstructed according to the number of idle channels, and the reconstructed retransmission packets are simultaneously transmitted by using the idle channels.Type: ApplicationFiled: May 16, 2011Publication date: September 8, 2011Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kengo Nagata, Tomoaki Kumagai, Shinya Otsuki, Kazuyoshi Saito, Satoru Aikawa, Atsushi Ohta, Akinori Hirukawa
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Publication number: 20110194517Abstract: When a transmission rate of each of lines that transmit data simultaneously between two STAs by using a plurality of radio channels and/or MIMO can be set independently, one data frame is fragmented in accordance with the transmission rates of the respective lines so as to generate a plurality of data packets having the same packet time length and data sizes equal to or smaller than a maximum data size. Those data packets are transmitted simultaneously by using a plurality of radio channels, or one radio channel and MIMO, or a plurality of radio channels and MIMO.Type: ApplicationFiled: April 18, 2011Publication date: August 11, 2011Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kengo Nagata, Tomoaki Kumagai, Shinya Otsuki, Kazuyoshi Saito, Satoru Aikawa, Akinori Hirukawa, Atsushi Ohta
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Patent number: 7982198Abstract: It is an object of the present invention to provide a charged particle beam extraction method and particle beam irradiation system that make it possible to exercise intensity control over an extracted ion beam while a simple device configuration is employed. To accomplish the above object, there is provided a particle beam irradiation system comprising: a synchrotron for accelerating and extracting an charged particle beam; an irradiation apparatus for extracting the charged particle beam that is extracted from the synchrotron; first beam intensity modulation means for controlling the beam intensity of the charged particle beam extracted from the synchrotron during an extraction control period of an operation cycle of the synchrotron; and second beam intensity modulation means for controlling the beam intensity during each of a plurality of irradiation periods contained in the extraction control period of the operation cycle.Type: GrantFiled: June 29, 2009Date of Patent: July 19, 2011Assignee: Hitachi, Ltd.Inventors: Hideaki Nishiuchi, Kazuyoshi Saito
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Patent number: 7974243Abstract: In retransmission processing due to a failure of transmission of data packets, a plurality of data packets are simultaneously transmitted between two STAs by utilizing multiple wireless channels and MIMO, and the number of idle channels and the number of retransmission packets are compared. Then, when both of the numbers are different or only when the number of idle channels is larger than the number of retransmission packets, the retransmission packets are reconstructed according to the number of idle channels, and the reconstructed retransmission packets are simultaneously transmitted by using the idle channels.Type: GrantFiled: June 18, 2004Date of Patent: July 5, 2011Assignee: Nippon Telegraph and Telephone CorporationInventors: Kengo Nagata, Tomoaki Kumagai, Shinya Otsuki, Kazuyoshi Saito, Satoru Aikawa, Atsushi Ohta, Akinori Hirukawa
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Publication number: 20110134566Abstract: A stationary portion of a spindle motor includes a base member and a magnetic member. The magnetic member is arranged below a magnet and fixed to the base member. The magnetic member includes an annular plate portion arranged on an upper surface of the base member, and a projecting portion arranged to extend from the plate portion in an axial direction. At least a portion of the projecting portion is press fitted to a wall surface of the base member.Type: ApplicationFiled: September 1, 2010Publication date: June 9, 2011Applicant: NIDEC CORPORATIONInventors: Yoichi SEKII, Hirokazu SHIRAI, Junya MIZUKAMI, Kazuyoshi SAITO, Hideki NISHIMURA, Atsushi YAWATA