Patents by Inventor Atsushi Chiba
Atsushi Chiba 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: 20090281387Abstract: Using a guidance system with a simple configuration, propulsive motion along a longitudinal direction and changing of the propulsion direction are easily performed with good precision and stability. There is provided a capsule-type medical apparatus 201 which is inserted into the body of a subject and is guided by an external magnetic field, the capsule-type medical apparatus 201 comprising: a substantially cylindrical capsule 202; a propulsion mechanism 207 for converting rotary motion about a longitudinal axis R of the capsule 202 into propulsive motion along the longitudinal axis R; a magnet 205 accommodated inside the capsule 202 and disposed in such a manner that the magnetic-pole direction thereof can be switched between a direction along the longitudinal axis R and a direction intersecting the longitudinal axis R; and a securing portion 212 for securing the magnet 205 to the capsule 202 in each of the switched states of the magnetic-pole direction.Type: ApplicationFiled: October 5, 2006Publication date: November 12, 2009Applicants: OLYMPUS MEDICAL SYSTEMS CORP., OLYMPUS CORPORATIONInventors: Hironobu Takizawa, Hironao Kawano, Akio Uchiyama, Shinsuke Tanaka, Atsushi Chiba
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Publication number: 20090227840Abstract: A capsule guiding system includes: an electrode pad arranged outside a human body to perform human body communication with a capsule endoscope and detect at least one of position and direction of the capsule endoscope; a magnetically guiding device which moves the capsule endoscope; a detector which detects a relative position between the electrode pad and the magnetically guiding device; a calculator which calculates at least one of the position and direction of the capsule endoscope based on a detection value of the electrode pad, and calculates at least one of an absolute position and direction of the capsule endoscope with respect to the magnetically guiding device based on at least one of the position and direction of the capsule endoscope and the relative position detected by the detector; and a control unit which controls the magnetically guiding device based on at least one of the absolute position and direction.Type: ApplicationFiled: February 27, 2009Publication date: September 10, 2009Applicants: OLYMPUS MEDICAL SYSTEMS CORP., OLYMPUS CORPORATIONInventors: Akio Uchiyama, Ryoji Sato, Atsushi Kimura, Atsushi Chiba, Hironobu Takizawa, Takeshi Mori, Tetsuo Minai
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Publication number: 20090171190Abstract: Position detection of a medical device is prevented from being impossible even when the frequency characteristic of a magnetic induction coil is varied in accordance with the state of an external magnetic field for guiding the medical device.Type: ApplicationFiled: December 4, 2006Publication date: July 2, 2009Inventors: Akio Uchiyama, Atsushi Kimura, Ryoji Sato, Atsushi Chiba
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Publication number: 20090137883Abstract: A capsule medical system is provided with a capsule medical device to be inserted into a subject, at least one electrode pad having a plurality of receiving electrodes, a receiving electrode switching unit, a control unit for controlling operations of the receiving electrode switching unit, and a position detector. The capsule medical device has a biological information acquiring unit for acquiring biological information of the subject, and a transmitting unit for outputting the biological information from a transmitting electrode through a living body. At least one electrode pad detects the biological information by a plurality of receiving electrodes. The receiving electrode switching unit switches a pair of receiving electrodes among the plurality of receiving electrodes. The position detector detects a position of the capsule medical device inside the subject based on the biological information detected by the electrode pad, and position coordinate data of the plurality of receiving electrodes.Type: ApplicationFiled: November 28, 2008Publication date: May 28, 2009Applicant: OLYMPUS CORPORATIONInventors: Atsushi Chiba, Akio Uchiyama, Hironobu Takizawa, Ryoji Sato, Atsushi Kimura, Tetsuo Minai, Takeshi Mori
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Patent number: 7396215Abstract: A water pump comprises a pump body, a cylindrical supporting portion, a pulley, a shaft portion, an impeller, a seal member, a pulley cylinder portion, a wall portion, a through-hole formed, a cover covering the wall portion and the pulley cylinder portion of the pulley from one side of the pulley, and the cover formed in a cylindrical shape with a bottom portion and including a reservoir for receiving fluid that has leaked through the seal member.Type: GrantFiled: April 13, 2005Date of Patent: July 8, 2008Assignee: Aisin Seiki Kabushiki KaishaInventors: Yasuo Ozawa, Yojiro Koga, Atsushi Chiba, Itsuro Hashiguchi
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Patent number: 7311499Abstract: An impeller apparatus for a water pump includes a driven side rotation body having a shaft portion and a plane portion positioned outside of the shaft portion in a radial direction, the driven side rotation body being arranged coaxially to a drive side rotation body which operates an auxiliary and being connected to the drive side rotation body through the plane portion and an intermediate member provided on an internal periphery of the drive side rotation body to project inwardly in a radial direction to integrally rotate with the drive side rotation body, and an impeller attached on the shaft portion to integrally rotate with the driven side rotation body.Type: GrantFiled: March 22, 2006Date of Patent: December 25, 2007Assignee: Aisin Seiki Kabushiki KaishaInventors: Takumi Hattori, Atsushi Chiba, Makoto Yoshida
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Patent number: 7229276Abstract: The present invention provides a manufacturing method for manufacturing an outer tube of an injector having a barrel portion having an excellent circularity, while preventing generation of distortion or warp. A molten resin is injected into a cavity 17 of a metal mold 11 including: a fixed mold 13 having a hole portion 12 having a shape along the outer shape of the injector outer tube 1; a movable mold 14 closing the hole portion 12; and a core 15 inserted into the hole portion 12. A cylindrical vacant portion is provided communicating with a flange forming portion 20 of the hole portion 12. The molten resin R is injected from a sprue 22 and a runner 23 via a submarine gate 24 into the cylindrical vacant portion 21 and the molten resin R is introduced into the cavity 17. The cylindrical vacant portion 21 has a push pin 25. When the molten resin has become half-molten state, the resin in the cylindrical vacant portion is introduced with pressure into the cavity 17 by the push pin 25.Type: GrantFiled: September 5, 2006Date of Patent: June 12, 2007Assignee: Kabushiki Kaisha TopInventor: Atsushi Chiba
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Publication number: 20070003662Abstract: The present invention provides a manufacturing method for manufacturing an outer tube of an injector having a barrel portion having an excellent circularity, while preventing generation of distortion or warp. A molten resin is injected into a cavity 17 of a metal mold 11 including: a fixed mold 13 having a hole portion 12 having a shape along the outer shape of the injector outer tube 1; a movable mold 14 closing the hole portion 12; and a core 15 inserted into the hole portion 12. A cylindrical vacant portion is provided communicating with a flange forming portion 20 of the hole portion 12. The molten resin R is injected from a sprue 22 and a runner 23 via a submarine gate 24 into the cylindrical vacant portion 21 and the molten resin R is introduced into the cavity 17. The cylindrical vacant portion 21 has a push pin 25. When the molten resin has become half-molten state, the resin in the cylindrical vacant portion is introduced with pressure into the cavity 17 by the push pin 25.Type: ApplicationFiled: September 5, 2006Publication date: January 4, 2007Applicant: KABUSHIKI KAISHA TOPInventor: Atsushi Chiba
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Publication number: 20060216164Abstract: An impeller apparatus for a water pump includes a driven side rotation body having a shaft portion and a plane portion positioned outside of the shaft portion in a radial direction, the driven side rotation body being arranged coaxially to a drive side rotation body which operates an auxiliary and being connected to the drive side rotation body through the plane portion and an intermediate member provided on an internal periphery of the drive side rotation body to project inwardly in a radial direction to integrally rotate with the drive side rotation body, and an impeller attached on the shaft portion to integrally rotate with the driven side rotation body.Type: ApplicationFiled: March 22, 2006Publication date: September 28, 2006Inventors: Takumi Hattori, Atsushi Chiba, Makoto Yoshida
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Patent number: 7087037Abstract: There is provided an injector having a gasket held in excellent intimate contact with an inner wall surface of a barrel and shortened in overall length. A gasket is joined to a mount base disposed on a tip end of a plunger and having a bendable portion which bends toward an axis of the plunger radially outwardly of the mount base. The gasket is joined to the mount base with a gap left for allowing the bendable portion to bend toward the tip end of the plunger when the gasket slides toward an injection needle. The gasket is made of a synthetic resin having an A-scale Shore hardness in the range from 20 to 70. The gasket has a groove define therein radially outwardly of the mount base, and the bendable portion comprises a portion of the gasket disposed radially outwardly of the groove.Type: GrantFiled: March 9, 2001Date of Patent: August 8, 2006Assignee: Kabushiki Kaisha TopInventors: Atsushi Chiba, Kazuhiro Ichikawa
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Publication number: 20050238511Abstract: A water pump comprises a pump body, a cylindrical supporting portion, a pulley, a shaft portion, an impeller, a seal member, a pulley cylinder portion, a wall portion, a through-hole formed, a cover covering the wall portion and the pulley cylinder portion of the pulley from one side of the pulley, and the cover formed in a cylindrical shape with a bottom portion and including a reservoir for receiving fluid that has leaked through the seal member.Type: ApplicationFiled: April 13, 2005Publication date: October 27, 2005Inventors: Yasuo Ozawa, Yojiro Koga, Atsushi Chiba, Itsuro Hashiguchi
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Patent number: 6793459Abstract: A water pump includes a body, a fixing member to which the body is fixed hermetically via a gasket, and an impeller which is fixed to an end part of a shaft supported rotatably by the body and housed in a vortex chamber formed in the body or in the fixing member. Further, the impeller has a circular plate into which the end part of the shaft is inserted and a plurality of blades radially provided on the circular plate at one side facing the fixing member or the other side facing the body and project from the circular plate to the fixing member side or the body side. In the water pump, the gasket has an intermediate plate with high rigidity and metal gaskets disposed between the intermediate plate and the body, and between the intermediate plate and the fixing member for sealing. The intermediate plate extends in radial direction to keep a predetermined axial distance between an inner peripheral portion of the intermediate plate and an end part of the blades facing to the fixing member or to the body.Type: GrantFiled: March 12, 2003Date of Patent: September 21, 2004Assignee: Aisin Seiki Kabushiki KaishaInventors: Masaki Chujo, Yoshiaki Nakano, Atsushi Chiba, Shuhei Yamazaki
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Publication number: 20040169318Abstract: The present invention provides a manufacturing method for manufacturing an outer tube of an injector having a barrel portion having an excellent circularity, while preventing generation of distortion or warp. A molten resin is injected into a cavity 17 of a metal mold 11 including: a fixed mold 13 having a hole portion 12 having a shape along the outer shape of the injector outer tube 1; a movable mold 14 closing the hole portion 12; and a core 15 inserted into the hole portion 12. A cylindrical vacant portion is provided communicating with a flange forming portion 20 of the hole portion 12. The molten resin R is injected from a sprue 22 and a runner 23 via a submarine gate 24 into the cylindrical vacant portion 21 and the molten resin R is introduced into the cavity 17. The cylindrical vacant portion 21 has a push pin 25. When the molten resin has become half-molten state, the resin in the cylindrical vacant portion is introduced with pressure into the cavity 17 by the push pin 25.Type: ApplicationFiled: December 31, 2003Publication date: September 2, 2004Inventor: Atsushi Chiba
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Publication number: 20030175118Abstract: A water pump includes a body, a fixing member to which the body is fixed hermetically via a gasket, and an impeller which is fixed to an end part of a shaft supported rotatably by the body and housed in a vortex chamber formed in the body or in the fixing member. Further, the impeller has a circular plate into which the end part of the shaft is inserted and a plurality of blades radially provided on the circular plate at one side facing the fixing member or the other side facing the body and project from the circular plate to the fixing member side or the body side.Type: ApplicationFiled: March 12, 2003Publication date: September 18, 2003Applicant: Aisin Seiki Kabushiki KaishaInventors: Masaki Chujo, Yoshiaki Nakano, Atsushi Chiba, Shuhei Yamazaki
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Patent number: 6561756Abstract: To provide a water pump capable of preventing coolant leaked from a shaft sealing member from invading a bearing by a simple construction, a water pump has an outer ring of a bearing attached to an inner peripheral face of a pulley, an inner ring of the bearing attached to an outer peripheral face of a cylindrical portion of a housing and a shaft sealing member attached to an inner peripheral face of the cylindrical portion.Type: GrantFiled: September 19, 2001Date of Patent: May 13, 2003Assignee: Aisin Seiki Kabushiki KaishaInventors: Yasuo Ozawa, Atsushi Chiba, Masaki Chujo, Junya Yamamoto
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Publication number: 20030014005Abstract: There is provided an injector having a gasket held in excellent intimate contact with an inner wall surface of a barrel and shortened in overall length. A gasket 6 is joined to a mount base 10 disposed on a tip end of a plunger 5 and having a bendable portion 14 which bends toward an axis of the plunger 5 radially outwardly of the mount base 10. The gasket 6 is joined to the mount base 10 with a gap left for allowing the bendable portion 14 to bend toward the tip end of the plunger 5 when the gasket 6 slides toward an injection needle 2. The gasket 6 is made of a synthetic resin having an A-scale Shore hardness in the range from 20 to 70. The gasket 6 has a groove 16 defined therein radially outwardly of the mount base 10, and the bendable portion 14 comprises a portion of the gasket 6 disposed radially outwardly of the groove.Type: ApplicationFiled: August 15, 2002Publication date: January 16, 2003Inventors: Atsushi Chiba, Kazuhiro Ichikawa
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Publication number: 20020034438Abstract: To provide a water pump capable of preventing coolant leaked from a shaft sealing member from invading a bearing by a simple construction, a water pump has an outer ring of a bearing attached to an inner peripheral face of a pulley, an inner ring of the bearing attached to an outer peripheral face of a cylindrical portion of a housing and a shaft sealing member attached to an inner peripheral face of the cylindrical portion.Type: ApplicationFiled: September 19, 2001Publication date: March 21, 2002Inventors: Yasuo Ozawa, Atsushi Chiba, Masaki Chujo, Junya Yamamoto
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Patent number: 5102820Abstract: In a manufacturing method for a dynamic random access memory with box-structured memory cells is disclosed, a polysilicon side wall is again formed inside the polysilicon side wall forming the outer wall. After that, with the side wall formed on this inner wall used as mask, an opening for forming a cavity is made in the center of the storage node in a self-aligned manner.Type: GrantFiled: June 28, 1991Date of Patent: April 7, 1992Assignee: Oki Electric Industry Co., Ltd.Inventor: Atsushi Chiba
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Patent number: 5032036Abstract: A joint structure of an annular member and a shaft member softer than the former is produced by(a) providing a shaft member with an oil spreading over its circumference, the shaft member having a plurality of discrete grooves, on its circumference in an inclined angular configuration about the axis of the shaft member, and(b) press fitting the annular member to the bore of the annular member with an interference such that the inner periphery of the annular member bore meshingly expands into the grooves. Press fitting proceeds under resilient deformation of the inner periphery of the annular member in the boundary friction state. A continuous oil film remains on the mating surfaces while securing firm joint.Type: GrantFiled: December 8, 1989Date of Patent: July 16, 1991Assignees: Koyo Seiko Co., Ltd., Aisin Seiki Kabushiki KaishaInventors: Yukitoshi Murakami, Hirofumi Dodoro, Naoki Minamoto, Atsushi Chiba, Minoru Kinbara