Patents by Inventor Hirohide Ishiguro
Hirohide Ishiguro 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: 20100295220Abstract: Provided is a multi-leaf spring-type vibration damping device capable of suppressing the resonance caused by rotations near the major critical speed of a rotating shaft system and suppressing self-excited vibrations due to rotations at or higher than the major critical speed of the rotating shaft system. In the multi-leaf spring-type vibration damping device, a bearing (9) of a rotating shaft system (6) that includes at least a rotating shaft (4) fit in the bearing and a rotor (5) mounted on the rotating shaft is clamped between a plurality of fixedly mounted and properly spaced-apart multi-leaf springs (11) at the portions near their distal ends, or the plurality of multi-leaf springs contact at those portions near the distal ends with the bearing, thereby to suppress the whirling vibrations of the bearing.Type: ApplicationFiled: January 10, 2007Publication date: November 25, 2010Inventors: Masaya Hotta, Hirohide Ishiguro, Hideki Morimitsu, Masahiko Nagasaka, Tomohiro Aoki
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Patent number: 7694540Abstract: A device for damping runout vibration of a rotating shaft system at least including a rotating shaft and a rotating body rotatably supported by the shaft. A ring (24) is provided outside a bearing (23) fitted on a rotating shaft with a clearance between the ring and an outer ring of the bearing. A vibration damping mechanism includes, in order to suppress runout vibration of a rotating shaft system from the radially outside of the ring (24), a blade spring (25) compressed by a preload and a stopper (26) for setting an operation limit of the blade spring.Type: GrantFiled: September 10, 2004Date of Patent: April 13, 2010Assignees: Sintokogio, Ltd.Inventors: Yukio Ishida, Jun Liu, Shoji Uchimura, Hideki Morimitsu, Hirohide Ishiguro
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Patent number: 7459178Abstract: A process for producing a ceramic sinter or inorganic film in which anisotropic particles or anisotropic crystals have been oriented; or a process for producing a bonded composite material which comprises a base sample and another material tenaciously bonded to a surface of the base. The processes are characterized by imposing a centrifugal force during buming (heating).Type: GrantFiled: November 5, 2002Date of Patent: December 2, 2008Assignees: National Institute of Advanced Industrial Science and Technology, Sinto V-Cerax, Ltd.Inventors: Koji Watari, Kazuo Nakamura, Kimiyasu Sato, Yoshiaki Kinemuchi, Shoji Uchimura, Hirohide Ishiguro, Hideki Morimitsu
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Publication number: 20070006393Abstract: A device for damping runout vibration of a rotating shaft system at least including a rotating shaft and a rotating body rotatably supported by the shaft. A ring (24) is provided outside a bearing (23) fitted on a rotating shaft with a clearance between the ring and an outer ring of the bearing. A vibration damping mechanism includes, in order to suppress runout vibration of a rotating shaft system from the radially outside of the ring (24), a blade spring (25) compressed by a preload and a stopper (26) for setting an operation limit of the blade spring.Type: ApplicationFiled: September 10, 2004Publication date: January 11, 2007Applicant: SINTOKOGIO, LTD.Inventors: Yukio Ishida, Jun Liu, Shoji Uchimura, Hideki Morimitsu, Hirohide Ishiguro
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Publication number: 20060055092Abstract: The present invention provides a rotor, a shaft or a sample holder for a centrifugal sintering system, and the present invention relates to a ceramic member for a centrifugal sintering system which is a member consisting of a rotor, a shaft or a sample holder for use in a centrifugal sintering system imparting a centrifugal force field and a temperature field to a molded body of ceramics or metal powder or a ceramic precursor film wherein a rotor for turning a sample holder, a shaft or a sample holder is composed of ceramics, to the ceramic member wherein the rotor which turns the sample holder is composed of conductive silicon carbide ceramics and the rotor alone is selectively caused to self heat by induction heating means to indirectly heat the sample, and to the ceramic member wherein the sample holder is composed of a material with a large dielectric loss and the sample holder alone is selectively heated using dielectric heating means to indirectly heat the sample.Type: ApplicationFiled: December 25, 2003Publication date: March 16, 2006Applicants: NATIONAL INSTIT OF ADVANCE INDUST SCIENCE AND TECH, SINTO V-CERAX , LTD.Inventors: Koji Watari, Yoshiaki Kinemuchi, Shoji Uchimura, Hirohide Ishiguro, Hideki Morimitsu
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Publication number: 20050006022Abstract: A process for producing a ceramic sinter or inorganic film in which anisotropic particles or anisotropic crystals have been oriented; or a process for producing a bonded composite material which comprises a base sample and another material tenaciously bonded to a surface of the base. The processes are characterized by imposing a centrifugal force during buming (heating).Type: ApplicationFiled: November 5, 2002Publication date: January 13, 2005Inventors: Koji Watari, Kazuo Nakamura, Kimiyasu Sato, Yoshiaki Kinemuchi, Shoji Uchimura, Hirohide Ishiguro, Hideki Morimitsu
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Publication number: 20040247855Abstract: It is an object to provide a method of manufacturing a porous medium having a grading porous structure, and there are provided a method of manufacturing a porous medium having a grading porous structure, comprising the steps of installing a sample consisting of a powder compact or a porous body in a rotating body, and heating the sample while applying a centrifugal force to the sample through high-speed rotation of the rotating body to produce a porous medium having a grading porous structure in which the pore size and the porosity change gradually by using the pressure grading in the sample arising through the centrifugal force, and such a method wherein the pore size and the porosity of the sample are predicted based on a linear shrinkage factor calculated through the equation:Type: ApplicationFiled: December 4, 2003Publication date: December 9, 2004Applicants: National Inst. of Adv. Industrial Sci. and Tech., Sinto V-Cerax, LTDInventors: Yoshiaki Kinemuchi, Koji Watari, Shoji Uchimura, Hirohide Ishiguro, Hideki Morimitsu
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Patent number: 6663828Abstract: A method and an apparatus for sintering a compact of particulate material for a ceramic or of particles of a metal, or a ceramic precursor film, wherein the sintering is performed by heating and burning the compact or the ceramic precursor film while applying centrifugal force to the compact or the ceramic precursor film.Type: GrantFiled: December 21, 2001Date of Patent: December 16, 2003Assignees: National Institute of Advanced Industrial Science and Technology, Sinto V-Cerax, Ltd.Inventors: Koji Watari, Mamoru Aizawa, Syoji Uchimura, Hirohide Ishiguro, Hideki Morimitsu
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Publication number: 20020110475Abstract: A method and an apparatus for sintering a compact of particulate material for a ceramic or of particles of a metal, or a ceramic precursor film, wherein the sintering is performed by heating and burning the compact or the ceramic precursor film while applying centrifugal force to the compact or the ceramic precursor film.Type: ApplicationFiled: December 21, 2001Publication date: August 15, 2002Inventors: Koji Watari, Mamoru Aizawa, Syoji Uchimura, Hirohide Ishiguro, Hideki Morimitsu
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Patent number: 6123452Abstract: An apparatus for testing the thermal shock fracture strength of ceramics. The apparatus includes supporting means for supporting a ceramic test piece shaped as a rectangular parallelepiped at a first side surface thereof, force-detecting means for restraining a predetermined location of a second side surface of the ceramic test piece, the second side surface facing the first side surface, the force-detecting means and the supporting means restraining any deformation of the ceramic test piece when the second side surface of the ceramic test piece is heated, the force-detecting means being adapted to detect a force acting on the force-detecting means from the ceramic test piece, which tends to be deformed, but which deformation is restrained, means for moving the supporting means to press the ceramic test piece against the force-detecting means, and a heat-emissive element, which is an electric heater, for covering and heating the second side surface to cause a thermal shock in the ceramic test piece.Type: GrantFiled: January 28, 1999Date of Patent: September 26, 2000Assignee: Sintokogio, Ltd.Inventors: Shoji Uchimura, Hirohide Ishiguro, Kazuhiro Ohta, Manabu Takatsu, Yasunobu Mizutani
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Patent number: 4931242Abstract: A method of forming from a sintering material slurry a shaped-body to be sintered having a complicated configuration. A mold is prepared using frames, a shielding member swollen with a solvent, and a filler including a substance formed of particles, and utilizing the action of vacuum. A sintering material slurry is poured into the thus prepared mold to form a shaped-body to be sintered.Type: GrantFiled: November 29, 1988Date of Patent: June 5, 1990Assignee: Sintokogio, Ltd.Inventors: Shoji Uchimura, Hironobu Amano, Kazuhiro Ohta, Hirohide Ishiguro, Takehiko Matsumoto, Takuya Ito