Patents by Inventor Akira Muramatsu
Akira Muramatsu 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: 20150159409Abstract: A vehicle door fixing device is provided with a door lock striker arranged in a first panel that is one of a vehicle body panel and a door panel, and a latch mechanism arranged in a second panel that is the other of the vehicle body panel and the door panel. The latch mechanism is capable of holding the vehicle door in a closed state by being engaged with the door lock striker. A wedge and an urging member are arranged in the second panel. An inclined surface arranged in the wedge contacts the door lock striker by a closing operation of the vehicle door. A contact portion arranged in the door lock striker contacts the inclined surface of the wedge. The urging member presses the wedge in the direction in which the inclined surface of the wedge is pressed against the contact portion of the door lock striker.Type: ApplicationFiled: August 27, 2013Publication date: June 11, 2015Applicant: AISIN SEIKI SABUSHIKI KAISHAInventors: Akira Muramatsu, Kosuke Tsukamoto, Yoshiki Odaka
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Patent number: 9027972Abstract: A vehicle door locking apparatus is equipped with a movable wedge, a fixed wedge, and an elastic member. The movable wedge is movable in the open/close direction of the vehicle door towards the vehicle body opening. The elastic member impels the movable wedge toward the fixed wedge. A slanted surface on the movable wedge and a slanted surface on the fixed wedge are configured to come into contact when the door is closed. The movable wedge is assembled on the end surface on the vehicle body opening side along with the base plate of a door lock striker that is assembled on the end surface on the vehicle body opening side. The fixed wedge is immovably assembled on the mounting section of the end surface on the vehicle door side, which is involved in a door lock assembly that is assembled on the end surface on the vehicle door side.Type: GrantFiled: February 21, 2011Date of Patent: May 12, 2015Assignee: Aisin Seiki Kabushiki KaishaInventors: Akira Muramatsu, Kosuke Tsukamoto, Kimito Shimizu, Kenji Oriishi, Yoshiki Odaka
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Patent number: 8944479Abstract: A vehicle door fixing apparatus, a fixed wedge configured to be fixedly attached to one of a vehicle body panel and a door panel, a base plate configured to be fixedly attached to the other one of the vehicle body panel and the door panel, a movable wedge slidably provided at the base plate, a biasing member biasing the movable wedge toward the fixed wedge, and a cover fixedly attached to the base plate and covering around the biasing member.Type: GrantFiled: December 14, 2011Date of Patent: February 3, 2015Assignee: Aisin Seiki Kabushiki KaishaInventors: Akira Muramatsu, Kosuke Tsukamoto, Yoshiki Odaka
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Patent number: 8837078Abstract: A rotating body for a fluid dynamic bearing used for rotating a recording disk that has been mounted therein include: a rotating shaft portion in which a cylindrical portion that serves as a rotating shaft and a protruding portion extended radially outward from one end of the cylindrical portion are formed integrally with each other; and a hub that is to be connected to the end portion near to the outer circumference of the protruding portion and that has a mounting seat portion on which the recording disk is to be mounted.Type: GrantFiled: August 2, 2011Date of Patent: September 16, 2014Assignee: Samsung Electro-Mechanics Japan Advanced Technology Co., LtdInventors: Akira Muramatsu, Takuji Yamada
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Publication number: 20140070546Abstract: A vehicle door fixing apparatus includes a door lock striker configured to be provided at one of a vehicle body panel and a door panel, a door lock assembly configured to be provided at the other one of the vehicle body panel and the door panel, a latch mechanism, a wedge member, and a fastening member including a fastening member head portion configured to protrude from a panel surface, the fastening member fastening the door lock assembly, the fastening member head portion including a contact portion which comes in contact with an inclined surface of the wedge member in response to a closing operation of the vehicle door, wherein a vehicle door is fixed in a closed state in a case where the door lock striker engages with the latch mechanism in response to the closing operation of the vehicle door.Type: ApplicationFiled: August 13, 2013Publication date: March 13, 2014Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Akira MURAMATSU, Kosuke Tsukamoto, Yoshiki Odaka
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Patent number: 8638526Abstract: In a rotating device, a housing includes a cylindrical outer surface facing an inner surface of a through hole and a guiding surface arranged on the underside of the outer surface, the diameter of the guiding surface being less than the diameter of the outer surface. Glue has an interface in an end space. In at least a part of the end space where the glue does not exist, conductive resin seamlessly is applied from the guiding surface to the inner surface of the through hole. With regard to a portion of the inner surface of the through hole that radially faces the guiding surface, the length, in the axial direction, of the portion that touches the conductive resin is greater than the length, in the axial direction, of the portion that touches the glue.Type: GrantFiled: December 22, 2011Date of Patent: January 28, 2014Assignee: Samsung Electro-Mechanics Japan Advanced Technology Co., Ltd.Inventors: Naoki Shinji, Hirotake Nishino, Akira Muramatsu, Yoshio Kurokawa
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Patent number: 8608856Abstract: A sealing part that is inexpensive and enable excellent durability to be secured without the need for a predetermined sealing space as would be required for a double sealing structure. A sealing part seals an inside of a reduced pressure vessel from an outside, in which a high-elasticity polymeric material-eroding eroding substance is present and which is comprised of a substrate processing apparatus carrying out predetermined processing on a substrate housed in the reduced pressure vessel. The sealing part has a radical sealing member and a vacuum sealing member. The radical sealing member is disposed on an inside side of the reduced pressure vessel and is resistant to the eroding substance. The vacuum sealing member is made of the high-elasticity polymeric material and is disposed on an outside side of the reduced pressure vessel. At least one refuge space is formed through at least part of the radical sealing member and at least part of the vacuum sealing member being separated from one another.Type: GrantFiled: April 20, 2006Date of Patent: December 17, 2013Assignees: Tokyo Electron Limited, Nippon Valqua Industries, Ltd.Inventors: Daisuke Hayashi, Akira Muramatsu
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Patent number: 8485534Abstract: A metal gasket includes an outer ring that is formed in a substantially C-shaped cross-section having an opening in a circumferential direction and an inner ring that is disposed inside the outer ring, wherein the inner ring is configured in a polygonal shape of a cross section, and a pair of corner portions opposing to each other in the inner ring are disposed on inner circumferential faces on the both sides of the opening in the outer ring.Type: GrantFiled: May 7, 2009Date of Patent: July 16, 2013Assignees: Tohoku University, Nippon Valqua Industries, Ltd.Inventors: Tadahiro Ohmi, Yasuyuki Shirai, Koji Sato, Masayuki Noguchi, Tsutomu Yoshida, Akira Muramatsu, Satoshi Kumaki, Yuki Kuwamura
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Patent number: 8425405Abstract: An electronic endoscope apparatus includes: an image pickup apparatus mounted at a distal end portion of an insertion portion; an operation portion provided consecutively at the insertion portion, with a frame member incorporated therein; and an electrical cable extended from the operation portion for connection with an external device. In the electronic endoscope apparatus, the frame member has a circuit board portion which establishes electrical connection between shields of the insertion portion and the electrical cable, and on which various electronic parts for exchanging signals with the image pickup apparatus are mounted. In spite of the arrangement of the image pickup apparatus that can acquire high-quality images at a distal end portion of the insertion portion, a size of the apparatus, in particular, a diameter of the insertion portion, can be prevented from being increased.Type: GrantFiled: April 29, 2009Date of Patent: April 23, 2013Assignee: Olympus Medical Systems Corp.Inventors: Takahiko Mitani, Akira Muramatsu, Seiji Sakai, Tomoaki Yamashita, Masahiro Kawauchi, Yuichi Wataya
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Patent number: 8407899Abstract: A fluid dynamic bearing includes a shaft to which a resin flange is fixed by insert molding. The process where the flange is fixed to the shaft by insert molding includes a flange forming process in which the flange, fixed to the shaft, is formed by injecting the resin into a filled portion in the lower mold through an upper mold, while cooling at least part of the shaft, arranged in a shaft arrangement portion in a lower mold, with cooling water circulating through a cooling pipe.Type: GrantFiled: February 8, 2010Date of Patent: April 2, 2013Assignee: Alphana Technology Co., Ltd.Inventor: Akira Muramatsu
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Publication number: 20130047374Abstract: A vehicle door fixing apparatus includes a fixed wedge configured to be fixed to one of a vehicle body panel and a door panel, and a wedge device configured to be fixed to the other of the vehicle body panel and the door panel, the fixed wedge including an attachment member configured to be attached to the vehicle body panel or the door panel, and a wedge member provided to be pressure contactable with the wedge device and being attachable and removable relative to the attachment member, the wedge member forming a design surface of the fixed wedge.Type: ApplicationFiled: August 24, 2012Publication date: February 28, 2013Applicant: Aisin Seiki Kabushiki KaishaInventors: Akira MURAMATSU, Kosuke TSUKAMOTO, Yoshiki ODAKA, Takahiro SOGAWA
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Publication number: 20130047373Abstract: A vehicle door fixing apparatus includes a fixed wedge configured to be provided at one of a vehicle body panel and a door panel, and a movable wedge configured to be provided at the other one of the vehicle body panel and the door panel, wherein the movable wedge is configured to be assembled together with a base plate of a door lock striker or with a door lock assembly that is engageable with a shaft of the door lock striker, the movable wedge includes a strength member, the movable wedge includes a contact member fixedly attached to the strength member and configured to be in pressure contact with the fixed wedge, and the strength member includes a rigidity that is higher than a rigidity of the contact member.Type: ApplicationFiled: August 23, 2012Publication date: February 28, 2013Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Akira MURAMATSU, Kosuke Tsukamoto, Yoshiki Odaka
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Patent number: 8376419Abstract: A vehicle door latch device, comprising: a housing provided in a vehicle door; a latch rotatably supported by the housing, wherein a striker provided in the vehicle body can be fitted to the latch; a pawl having a shaft portion rotatably supported by the housing, wherein the pawl is engageable with the latch to restrict rotation of the latch; a helical torsion spring having a helical portion through which the shaft portion is passed, first and second engaging legs extending radially outward in relation to the helical portion, wherein the first engaging leg is engaged with the pawl, and the second engaging leg is engaged with the housing, the helical torsion spring always urging the pawl to rotate to an engagement position where the pawl can be engaged with the latch; and a projecting wall formed in the housing, the projecting wall contacting an outer circumferential surface of the helical portion.Type: GrantFiled: September 29, 2008Date of Patent: February 19, 2013Assignee: Aisin Seiki Kabushiki KaishaInventors: Norio Konomoto, Akira Muramatsu, Kosuke Tsukamoto
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Publication number: 20120311819Abstract: A vehicle door locking apparatus is equipped with a movable wedge, a fixed wedge, and an elastic member. The movable wedge is movable in the open/close direction of the vehicle door towards the vehicle body opening. The elastic member impels the movable wedge toward the fixed wedge. A slanted surface on the movable wedge and a slanted surface on the fixed wedge are configured to come into contact when the door is closed. The movable wedge is assembled on the end surface on the vehicle body opening side along with the base plate of a door lock striker that is assembled on the end surface on the vehicle body opening side. The fixed wedge is immovably assembled on the mounting section of the end surface on the vehicle door side, which is involved in a door lock assembly that is assembled on the end surface on the vehicle door side.Type: ApplicationFiled: February 21, 2011Publication date: December 13, 2012Applicant: Aisin Seiki Kabushiki KaishaInventors: Akira Muramatsu, Kosuke Tsukamoto, Kimito Shimizu, Kenji Oriishi, Yoshiki Odaka
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Publication number: 20120292079Abstract: A composite cable formed by unitizing coaxial wires of a drive signal system by twisting and bundling, and a composite cable formed by unitizing coaxial wires of an output signal system by twisting and bundling are arranged so as to be positioned substantially on a straight line passing through a cable center axis, and other electric wires of a power supply system are arranged at positions that are substantially symmetrical to each other with respect to the straight line passing through the cable center axis. Then, the composite cables and the simple wires are collectively twisted and bundled, a binding tape is wound on an outer circumference thereof, and an outer circumference of the binding tape is further shielded by an overall shield and covered by a sheath, which is an outer coating, thereby forming a signal cable.Type: ApplicationFiled: July 31, 2012Publication date: November 22, 2012Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Akira MURAMATSU, Takahiko MITANI
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Publication number: 20120176700Abstract: In a rotating device, a housing includes a cylindrical outer surface facing an inner surface of a through hole and a guiding surface arranged on the underside of the outer surface, the diameter of the guiding surface being less than the diameter of the outer surface. Glue has an interface in an end space. In at least a part of the end space where the glue does not exist, conductive resin seamlessly is applied from the guiding surface to the inner surface of the through hole. With regard to a portion of the inner surface of the through hole that radially faces the guiding surface, the length, in the axial direction, of the portion that touches the conductive resin is greater than the length, in the axial direction, of the portion that touches the glue.Type: ApplicationFiled: December 22, 2011Publication date: July 12, 2012Applicant: ALPHANA TECHNOLOGY CO., LTD.Inventors: Naoki SHINJI, Hirotake NISHINO, Akira MURAMATSU, Yoshio KUROKAWA
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Publication number: 20120161454Abstract: A vehicle door fixing apparatus, a fixed wedge configured to be fixedly attached to one of a vehicle body panel and a door panel, a base plate configured to be fixedly attached to the other one of the vehicle body panel and the door panel, a movable wedge slidably provided at the base plate, a biasing member biasing the movable wedge toward the fixed wedge, and a cover fixedly attached to the base plate and covering around the biasing member.Type: ApplicationFiled: December 14, 2011Publication date: June 28, 2012Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Akira MURAMATSU, Kosuke Tsukamoto, Yoshiki Odaka
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Publication number: 20120112477Abstract: A movable wedge device for a vehicle door fixing apparatus includes a base plate configured to be fixed to one of a vehicle body panel and a door panel, a mounting hole formed on the base plate and configured to be inserted with a mounting member, a movable wedge provided at the base plate to be movable between a position where the movable wedge covers the mounting hole and a position where the mounting hole is exposed, the movable wedge configured to press onto a fixed wedge configured to be provided at the other of the vehicle body panel and the door panel, a biasing member biasing the movable wedge towards the position where the movable wedge covers the mounting hole, and a hold member detachably provided for stopping a sliding movement of the movable wedge and retaining the movable wedge at the position where the mounting hole is exposed.Type: ApplicationFiled: November 3, 2011Publication date: May 10, 2012Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Akira MURAMATSU, Kosuke Tsukamoto, Yoshiki Odaka
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Publication number: 20120112474Abstract: A movable wedge device of a vehicle door fixing apparatus, includes a base plate fixedly attached to one of a vehicle body panel and a door panel, a movable wedge slidably provided at the base plate and pushed against a fixed wedge provided at the other one of the vehicle body panel and the door panel, a biasing member positioned between the base plate and the movable wedge and biasing the movable wedge toward the fixed wedge, a guide rail provided at one of the base plate and the movable wedge, a guide groove which is provided at the other one of the base plate and the movable wedge and with which the guide rail engages for allowing the movable wedge to slide, and an elastic member provided in a compressed state between a surface of the guide rail and a wall of the guide groove.Type: ApplicationFiled: November 3, 2011Publication date: May 10, 2012Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Akira MURAMATSU, Kosuke TSUKAMOTO, Yoshiki ODAKA
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Patent number: 8146924Abstract: A low-compression force metal gasket includes a coating layer containing a polymer material on at least a sealing surface of the gasket, and the coating layer satisfies the following conditions (1) to (3): (1) the layer comprises a resin, a rubber or a mixture thereof having an oxygen gas permeability coefficient at 25° C. of 10×10?12 to 0.1×10?12 (m2/s); (2) when the layer is compression deformed, the storage elastic modulus (E?) at 200° C. is in the range of 1.0×107 to 1.0×102 Pa; and (3) the coating layer has a thickness of 1 to 40 ?m. The gasket provides a high seal at a low clamping force.Type: GrantFiled: June 11, 2008Date of Patent: April 3, 2012Assignees: Tohoku University, Nippon Valqua Industries, Ltd.Inventors: Tadahiro Ohmi, Yasuyuki Shirai, Yasushi Aburatani, Akira Muramatsu, Masayuki Noguchi, Kouji Sato, Satoshi Kumaki