Patents by Inventor Nobuhiro Fujiwara
Nobuhiro Fujiwara 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: 8830650Abstract: An ionizer includes two needle electrodes, and a high voltage generating unit for applying a first AC voltage to one of the needle electrodes, and for applying a second AC voltage, having a frequency higher than a frequency of the first AC voltage, to another of the needle electrodes. Static charge of a charged body is eliminated by releasing generated positive ions or negative ions, which are generated in the vicinity of the needle electrodes, toward the body.Type: GrantFiled: December 7, 2010Date of Patent: September 9, 2014Assignee: SMC Kabushiki KaishaInventors: Satoshi Suzuki, Nobuhiro Fujiwara, Masayuki Orihara
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Patent number: 8523154Abstract: In a vibration control equipment 1 constituted by inserting an outer tube 20 of pair of damping rubbers 2A, 2B into an opening 30 of a bracket member 3, clamping the pair of damping rubbers 2A, 2B by means of plate members 4A, 4B, tightening a fastening member 5 for coupling the plate members 4A, 4B, and then compressing the rubber elastic bodies 22 of the damping rubbers 2A, 2B in the axial direction, the outside diameter of the outer tube 20 before tightening the fastening member 5 is smaller than the inside diameter of the fixing hole 30, the rubber elastic bodies 22 are compression deformed by tightening the fastening member 5 and thus a bracket member 3 is clamped by means of upper and lower flange portions 23, at least one of the rubber elastic bodies 22 is provided with mold cavity portions 26A, 26B and at least one of the pair of outer tubes 20 is provided with a positioning portion 24 for determining the circumferential position of the pair of damping rubbers 2A, 2B relative to the bracket member 3.Type: GrantFiled: March 28, 2008Date of Patent: September 3, 2013Assignee: Bridgestone CorporationInventor: Nobuhiro Fujiwara
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Patent number: 8497754Abstract: The electromagnetic actuator is a linear electromagnetic actuator in which the relative position between a slide table that supports permanent magnets thereon and a guide rail that supports a coil, which is arranged in confronting relation to the permanent magnets, is displaced by means of a thrust force generated by a current flowing through the coil. The coil is disposed on the guide rail through a low coercive force magnetizable material body, the coercive force of which is lower than a predetermined value. Consequently, generation of residual magnetization can be suppressed, and an influence on the thrust force caused by such residual magnetization can also be suppressed.Type: GrantFiled: February 21, 2013Date of Patent: July 30, 2013Assignee: SMC Kabushiki KaishaInventors: Nobuhiro Fujiwara, Hisashi Yajima
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Patent number: 8421564Abstract: The electromagnetic actuator is a linear electromagnetic actuator in which the relative position between a slide table that supports permanent magnets thereon and a guide rail that supports a coil, which is arranged in confronting relation to the permanent magnets, is displaced by means of a thrust force generated by a current flowing through the coil. The coil is disposed on the guide rail through a low coercive force magnetizable material body, the coercive force of which is lower than a predetermined value. Consequently, generation of residual magnetization can be suppressed, and an influence on the thrust force caused by such residual magnetization can also be suppressed.Type: GrantFiled: August 30, 2010Date of Patent: April 16, 2013Assignee: SMC Kabushiki KaishaInventors: Hisashi Yajima, Nobuhiro Fujiwara
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Publication number: 20120123564Abstract: An actuator drive control apparatus is equipped with a movement distance setting means for setting a movement distance of a displaceable member, a movement time setting means for setting a movement time, a target value calculating means for calculating a target value of a displacement amount or a displacement velocity of the displaceable member at an arbitrary timing based on the movement distance and the movement time, and a drive controller for generating driving power based on the displacement amount or the displacement velocity target value of the displaceable member and sending the drive power to an actuator.Type: ApplicationFiled: November 8, 2011Publication date: May 17, 2012Applicant: SMC Kabushiki KaishaInventors: Hisashi YAJIMA, Nobuhiro Fujiwara
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Patent number: 8174344Abstract: First and second projections are formed to protrude toward a guide rail from both sides of a slide table. Third and fourth projections are formed to protrude toward the slide table from both sides of the guide rail. A plurality of balls are arranged in clearances between the first and second projections and the third and fourth projections.Type: GrantFiled: February 3, 2010Date of Patent: May 8, 2012Assignee: SMC Kabushiki KaishaInventors: Hisashi Yajima, Nobuhiro Fujiwara
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Patent number: 8174814Abstract: An ionizer includes positive and negative wire electrodes each formed of a conductive wire with a circular cross section. The wire electrodes are arranged in parallel with each other, each having circumferential surfaces serving as a discharge surface on which a corona discharge occurs upon application of positive and negative high voltages for discharging positive and negative ions.Type: GrantFiled: November 6, 2008Date of Patent: May 8, 2012Assignee: SMC CorporationInventors: Koichi Yasuoka, Youhei Miyata, Nobuhiro Fujiwara, Satoshi Suzuki, Toshio Sato
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Publication number: 20110134580Abstract: An ionizer includes two needle electrodes, and a high voltage generating unit for applying a first AC voltage to one of the needle electrodes, and for applying a second AC voltage, having a frequency higher than a frequency of the first AC voltage, to another of the needle electrodes. Static charge of a charged body is eliminated by releasing generated positive ions or negative ions, which are generated in the vicinity of the needle electrodes, toward the body.Type: ApplicationFiled: December 7, 2010Publication date: June 9, 2011Applicant: SMC Kabushiki KaishaInventors: Satoshi SUZUKI, Nobuhiro FUJIWARA, Masayuki ORIHARA
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Patent number: 7920368Abstract: A static eliminator that can be placed at a close distance capable of eliminating static electricity while preventing furious elevation of the surface electric potential of a work when the static eliminator is placed at a close distance to the work. A cover formed by an electro conductive porous material covering discharge needles is attached to a holding member in which a plurality of the discharge needles are provided and air blowing openings for ejecting air around the discharge needles are provided. The cover evenly discharges ionized air from the surface of the cover, and is electrically connected to ground to have a function for absorbing a part of generated ions.Type: GrantFiled: June 19, 2006Date of Patent: April 5, 2011Assignee: SMC CorporationInventors: Nobuhiro Fujiwara, Noriaki Kusaba, Takashi Yasuoka, Satoshi Suzuki
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Publication number: 20110050375Abstract: The electromagnetic actuator is a linear electromagnetic actuator in which the relative position between a slide table that supports permanent magnets thereon and a guide rail that supports a coil, which is arranged in confronting relation to the permanent magnets, is displaced by means of a thrust force generated by a current flowing through the coil. The coil is disposed on the guide rail through a low coercive force magnetizable material body, the coercive force of which is lower than a predetermined value. Consequently, generation of residual magnetization can be suppressed, and an influence on the thrust force caused by such residual magnetization can also be suppressed.Type: ApplicationFiled: August 30, 2010Publication date: March 3, 2011Applicant: SMC Kabushiki KaishaInventors: Hisashi YAJIMA, Nobuhiro Fujiwara
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Patent number: 7821762Abstract: With a piezoelectric transformer formed of a ferroelectric element which generates a high voltage in a secondary section upon application of an AC voltage to a primary section, ground electrodes are attached to upper and lower surfaces of the secondary section of the piezoelectric transformer via a dielectric sheet for insulation in tight contact therewith such that a dielectric barrier discharge occurs around the ground electrodes to generate positive and negative ions, and an air flow is injected from an air nozzle to flow toward a neutralized subject across the ground electrodes.Type: GrantFiled: November 6, 2008Date of Patent: October 26, 2010Assignee: SMC CorporationInventors: Koichi Yasuoka, Yuki Shibata, Nobuhiro Fujiwara, Satoshi Suzuki, Toshio Sato
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Publication number: 20100133734Abstract: In a vibration control equipment 1 constituted by inserting an outer tube 20 of pair of damping rubbers 2A, 2B into an opening 30 of a bracket member 3, clamping the pair of damping rubbers 2A, 2B by means of plate members 4A, 4B, tightening a fastening member 5 for coupling the plate members 4A, 4B, and then compressing the rubber elastic bodies 22 of the damping rubbers 2A, 2B in the axial direction, the outside diameter of the outer tube 20 before tightening the fastening member 5 is smaller than the inside diameter of the fixing hole 30, the rubber elastic bodies 22 are compression deformed by tightening the fastening member 5 and thus a bracket member 3 is clamped by means of upper and lower flange portions 23, at least one of the rubber elastic bodies 22 is provided with mold cavity portions 26A, 26B and at least one of the pair of outer tubes 20 is provided with a positioning portion 24 for determining the circumferential position of the pair of damping rubbers 2A, 2B relative to the bracket member 3.Type: ApplicationFiled: March 28, 2008Publication date: June 3, 2010Applicant: BRIDGESTONE CORPORATIONInventor: Nobuhiro Fujiwara
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Publication number: 20100134225Abstract: First and second projections are formed to protrude toward a guide rail from both sides of a slide table. Third and fourth projections are formed to protrude toward the slide table from both sides of the guide rail. A plurality of balls are arranged in clearances between the first and second projections and the third and fourth projections.Type: ApplicationFiled: February 3, 2010Publication date: June 3, 2010Applicant: SMC KABUSHIKI KAISHAInventors: Hisashi Yajima, Nobuhiro Fujiwara
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Patent number: 7711453Abstract: A positioning control system has a disturbance observer for estimating a disturbance from a displaced distance of a cylinder of a controlled object, and feeding back an estimated disturbance. The positioning control system also includes a saturation element and a low-pass element disposed in a feedback loop including the disturbance observer, and a saturated value changer for changing a saturated value of the saturation element based on a deviation. The saturation element is disposed in a forward path of a positive-feedback minor loop, whereas the low-pass element is disposed in a feedback path of the positive-feedback minor loop.Type: GrantFiled: January 24, 2007Date of Patent: May 4, 2010Assignee: SMC Kabushiki KaishaInventors: Seikai Yo, Kazuo Nakano, Nobuhiro Fujiwara, Hiroshi Miyachi, Masatoshi Hatakeyama
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Publication number: 20100073842Abstract: A static eliminator that can be placed at a close distance capable of eliminating static electricity while preventing furious elevation of the surface electric potential of a work when the static eliminator is placed at a close distance to the work. A cover formed by an electro conductive porous material covering discharge needles is attached to a holding member in which a plurality of the discharge needles are provided and air blowing openings for ejecting air around the discharge needles are provided. The cover evenly discharges ionized air from the surface of the cover, and is electrically connected to ground to have a function for absorbing a part of generated ions.Type: ApplicationFiled: June 19, 2006Publication date: March 25, 2010Applicant: SMC CORPORATIONInventors: Nobuhiro Fujiwara, Noriaki Kusaba, Takashi Yasuoka, Satoshi Suzuki
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Patent number: 7683749Abstract: First and second projections are formed to protrude toward a guide rail from both sides of a slide table. Third and fourth projections are formed to protrude toward the slide table from both sides of the guide rail. A plurality of balls are arranged in clearances between the first and second projections and the third and fourth projections.Type: GrantFiled: November 23, 2005Date of Patent: March 23, 2010Assignee: SMC Kabushiki KaishaInventors: Hisashi Yajima, Nobuhiro Fujiwara
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Patent number: 7648193Abstract: A frame of a vehicle supports a cabin via four vibration-isolating apparatuses. A vibration-isolating supporting plane, which contains the four vibration-isolating apparatuses, passes through a center of gravity point G of the cabin. Due to an arranged structure of the vibration-isolating apparatuses, shaking of the center of gravity point of the cabin due to vibration transferred from the frame at times of riding on poor roads or at times of operation can be kept small, as compared with a vibration-isolating supporting structure in which the vibration-isolating supporting plane is far apart from the center of gravity point G. A vibration-isolating supporting structure which does not increase shaking of a center of gravity of the cabin is provided.Type: GrantFiled: November 20, 2006Date of Patent: January 19, 2010Assignee: Bridgestone CorporationInventors: Nobuhiro Fujiwara, Kiyoshi Oozu
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Publication number: 20090135538Abstract: With a piezoelectric transformer formed of a ferroelectric element which generates a high voltage in a secondary section upon application of an AC voltage to a primary section, ground electrodes are attached to upper and lower surfaces of the secondary section of the piezoelectric transformer via a dielectric sheet for insulation in tight contact therewith such that a dielectric barrier discharge occurs around the ground electrodes to generate positive and negative ions, and an air flow is injected from an air nozzle to flow toward a neutralized subject across the ground electrodes.Type: ApplicationFiled: November 6, 2008Publication date: May 28, 2009Applicant: SMC CorporationInventors: Koichi YASUOKA, Yuki Shibata, Nobuhiro Fujiwara, Satoshi Suzuki, Toshio Sato
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Publication number: 20090135537Abstract: An ionizer includes positive and negative wire electrodes each formed of a conductive wire with a circular cross section. The wire electrodes are arranged in parallel with each other, each having circumferential surfaces serving as a discharge surface on which a corona discharge occurs upon application of positive and negative high voltages for discharging positive and negative ions.Type: ApplicationFiled: November 6, 2008Publication date: May 28, 2009Applicant: SMC CorporationInventors: Koichi Yasuoka, Youhei Miyata, Nobuhiro Fujiwara, Satoshi Suzuki, Toshio Sato
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Patent number: D635165Type: GrantFiled: September 22, 2010Date of Patent: March 29, 2011Assignee: SMC CorporationInventors: Hisashi Yajima, Tatsuya Hosaka, Takehiko Kanazawa, Nobuhiro Fujiwara