Patents by Inventor Takashi Miyakawa
Takashi Miyakawa 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: 20220097163Abstract: A method for monitoring welding of an electric resistance welded steel pipe of the present invention includes: an image acquisition step in which, when an electric resistance welded steel pipe is welded, a V-convergence portion including an edge detection area and a V-convergence point, and a welding portion including a position where a molten steel starts to be discharged from an inside of a wall thickness and a bead, are imaged to obtain a captured image; a determination information acquisition step in which the captured image is image-processed, and a molten length from the V-convergence point to the position where the molten steel starts to be discharged or a molten width of the welding portion or a combination thereof is acquired as a determination information; and a determining step in which it is determined whether a cold welding has occurred by comparing the determination information with a determination threshold value set in advance for each wall thickness of the electric resistance welded steel pipType: ApplicationFiled: March 6, 2020Publication date: March 31, 2022Inventors: Noboru HASEGAWA, Takashi MIYAKAWA, Michimasa MUKAI, Toshisuke FUKAMI
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Patent number: 10680377Abstract: A housing structure of a printed circuit board with a connector includes the printed circuit board on which an electronic component is implemented, the connector implemented on an end portion of the printed circuit board, the connector including a fitted portion fitted with a mating component which is a connection target, and a housing accommodating the printed circuit board and the connector. The housing includes a first case surrounding the printed circuit board and a second case covering the connector. The second case includes a first surface portion arranged at a side where the fitted portion of the connector is provided, and at least one second surface portion which is nonparallel to the first surface portion.Type: GrantFiled: April 25, 2019Date of Patent: June 9, 2020Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Junya Ichikawa, Hidetoshi Yata, Takashi Miyakawa
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Publication number: 20190334276Abstract: A housing structure of a printed circuit board with a connector includes the printed circuit board on which an electronic component is implemented, the connector implemented on an end portion of the printed circuit board, the connector including a fitted portion fitted with a mating component which is a connection target, and a housing accommodating the printed circuit board and the connector. The housing includes a first case surrounding the printed circuit board and a second case covering the connector. The second case includes a first surface portion arranged at a side where the fitted portion of the connector is provided, and at least one second surface portion which is nonparallel to the first surface portion.Type: ApplicationFiled: April 25, 2019Publication date: October 31, 2019Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Junya ICHIKAWA, Hidetoshi Yata, Takashi Miyakawa
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Patent number: 9050681Abstract: The present invention provides a method of production of electric resistance welded steel pipe able to stably reduce weld defects due to oxides by firing plasma and furthermore able to reduce plasma jet noise and comprises shaping steel plate 1 into a tube and electric resistance welding the abutting end faces 4 during which blowing on at least the abutting end faces 4a in the region 6 at the welding upstream side from the weld point 9 where the temperature becomes 650° C. or more a reducing high temperature (pseudo) laminar plasma obtained by applying voltage to a reducing gas containing H2 gas: 2 to 50 vol % to which is added a balance of Ar gas alone or a mixed gas of Ar gas to which N2 gas, He gas, or both are added. At that time, it is preferable to make the applied voltage over 120V and the make the plasma blowing conditions satisfy the following formula (1).Type: GrantFiled: February 29, 2008Date of Patent: June 9, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Hideki Hamatani, Shinji Kodama, Nobuo Mizuhashi, Sunao Takeuchi, Tomohiro Nakaji, Takashi Miyakawa, Hitoshi Asahi, Michitoshi Tanimoto, Michimasa Mukai
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Patent number: 8406504Abstract: The invention provides a system and method for monitoring the molten state of electric-resistance-welded pipe on-line. In the system, a mirror provided at a front end side inside a container receives light emitted by the welded parts of the tube-shaped steel strip through heat resistant glass from the side direction and reflects the image in the direction of a relay lens provided at a base end side of a relay lens unit. The relay lenses relay the image to a conversion lens, which forms the image on the imaging area of a CCD camera. Therefore, it is possible to capture the welded parts from the side direction by a resolution in accordance with the resolution of the CCD camera and possible to obtain information of the welded parts more accurately than in the past and on-line.Type: GrantFiled: October 31, 2008Date of Patent: March 26, 2013Assignee: Nippon Steel & Sumitomo Metal CorporationInventors: Noboru Hasegawa, Hideki Hamatani, Michimasa Mukai, Kazuto Yamamoto, Takashi Miyakawa
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Patent number: 8383978Abstract: This invention provides a steel pipe material weld zone heating method and apparatus for melting and welding the weld zone of a steel pipe material that during continuous induction heating and welding of moving steel pipe material as the material being heated controls temperature distribution and molten steel shape and weld frequency fluctuation with high accuracy and high efficiency, irrespective of the shape of the heated region of material being heated or the material properties of the material being heated, which comprises a first imaging device, a weld zone temperature distribution computation device, a heating control device, and a variable frequency alternating current power supply device.Type: GrantFiled: October 22, 2008Date of Patent: February 26, 2013Assignee: Nippon Steel CorporationInventors: Kazuhiko Fukutani, Kenji Umetsu, Yoshiaki Nakamura, Kazuto Yamamoto, Takashi Miyakawa, Ryuichi Shimada, Tadayuki Kitahara, Takanori Isobe
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Publication number: 20100258535Abstract: This invention provides a steel pipe material weld zone heating method and apparatus for melting and welding the weld zone of a steel pipe material that during continuous induction heating and welding of moving steel pipe material as the material being heated controls temperature distribution and molten steel shape and weld frequency fluctuation with high accuracy and high efficiency, irrespective of the shape of the heated region of material being heated or the material properties of the material being heated, which comprises a first imaging step in which first imaging means 3 installed opposite an end face weld zone of the steel pipe material is used to detect self-emitted light of the weld zone and output a brightness image, a weld zone temperature distribution computation step in which image processing is performed based on the brightness image and emitted light temperature measurement is applied to compute the plate-thickness direction temperature distribution of the weld zone, a heating control step inType: ApplicationFiled: October 22, 2008Publication date: October 14, 2010Inventors: Kazuhiko Fukutani, Kenji Umetsu, Yoshiaki Nakamura, Kazuto Yamamoto, Takashi Miyakawa, Ryuichi Shimada, Tadayuki Kitahara, Takanori Isobe
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Publication number: 20100232678Abstract: A system and method for monitoring the molten state for enabling a molten state, butting state, or other state of electric-resistance-welded pipe on-line more accurately than in the past are provided. That is, a mirror 23 provided at a front end side inside a container 21 receives light emitted by the welded parts 5 of the tube-shaped steel strip 1 themselves through heat resistant glass 22 from the side direction and reflects the image of the welded parts 5 of the tube-shaped steel strip 1 in the direction of a relay lens 24 provided at a base end side of a relay lens unit 13. The relay lenses 24 relay the image of the welded parts 5 of the tube-shaped steel strip 1 to a conversion lens 12, then the conversion lens 12 forms that image on the imaging area of a CCD camera 11.Type: ApplicationFiled: October 31, 2008Publication date: September 16, 2010Inventors: Noboru Hasegawa, Hideki Hamatani, Michimasa Mukai, Kazuto Yamamoto, Takashi Miyakawa
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Publication number: 20100104888Abstract: The present invention provides a method of production of electric resistance welded steel pipe able to stably reduce weld defects due to oxides by firing plasma and furthermore able to reduce plasma jet noise and comprises shaping steel plate 1 into a tube and electric resistance welding the abutting end faces 4 during which blowing on at least the abutting end faces 4a in the region 6 at the welding upstream side from the weld point 9 where the temperature becomes 650° C. or more a reducing high temperature (pseudo) laminar plasma obtained by applying voltage to a reducing gas containing H2 gas: 2 to 50 vol % to which is added a balance of Ar gas alone or a mixed gas of Ar gas to which N2 gas, He gas, or both are added. At that time, it is preferable to make the applied voltage over 120V and the make the plasma blowing conditions satisfy the following formula (1).Type: ApplicationFiled: February 29, 2008Publication date: April 29, 2010Inventors: Hideki Hamatani, Shinji Kodama, Nobuo Mizuhashi, Sunao Takeuchi, Tomohiro Nakaji, Takashi Miyakawa, Hitoshi Asahi, Michitoshi Tanimoto, Michimasa Mukai
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Publication number: 20040115392Abstract: A process for producing a formed honeycomb body, which comprises mixing, by a mixer, a raw material for forming a honeycomb body structure containing at least a ceramic raw material powder, a binder and water, to obtain a compounded mixture for forming a green body, and kneading and extruding the compounded mixture for forming a green body into a honeycomb shape by a continuous extruder, to obtain a formed honeycomb body, wherein there is added, to the raw material for forming a honeycomb body structure, a crushed green body obtained by crushing a green body having substantially the same composition as the compounded mixture for forming a green body, into the maximum particle diameter of 50 mm or smaller and the resulting mixture is mixed by a mixer to obtain a compounded mixture for forming a green body.Type: ApplicationFiled: November 21, 2003Publication date: June 17, 2004Applicant: NGK INSULATORS, LTD.Inventors: Takashi Miyakawa, Satoru Inoue
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Patent number: 6711979Abstract: The present invention provides a cutting method of a ceramic honeycomb formed body 5 for cutting the ceramic honeycomb formed body 5 with a fine line stretched at an appropriate tension substantially at right angles to the direction of throughholes 9 thereof. The method comprises the steps of providing a cutting guide groove 10 running through the outer periphery of the ceramic honeycomb formed body substantially at right angles to the direction of throughholes 9, and putting a fine line 2 to the cutting guide groove 10, to cut the ceramic honeycomb formed body 5 only by pressing the fine line 2 against the ceramic honeycomb formed body 5. By using this cutting method, it is possible to cut a ceramic honeycomb formed body having thin partition walls of under 125 &mgr;m without causing a distortion. The possibility to reduce the cutting frequency of the fine line leads to possibility to improve the cutting efficiency.Type: GrantFiled: June 7, 2001Date of Patent: March 30, 2004Assignee: NGK Insulators, Ltd.Inventors: Takashi Miyakawa, Yuji Ueda, Satoshi Sugiyama
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Patent number: 6659261Abstract: A ceramic shaped body-positioning system which can accurately position even a thin-walled ceramic honeycomb shaped body without occurring deformations, cracks and breakages of the ceramic shaped bodies and which is particularly suitable for positioning odd-shaped products is provided. A positioning system 1 for a ceramic shaped body 2 is used for positioning the ceramic shaped body 2 to accurately convey the ceramic shaped body 2 to the next step. The positioning system 1 comprises a centering table 3 for placing the ceramic shaped body 2, a plurality of chucking unit 4-1 each consisting of a chucking body 5-1 and a pair of ceramic shaped body-pushing members 5-1a and 5-1b provided in the chucking body, and a drive unit 6 for moving the chucking unit 4-1 toward/away from the ceramic shaped body 2 on the centering table 3.Type: GrantFiled: August 1, 2001Date of Patent: December 9, 2003Assignee: NGK Insulators, Ltd.Inventors: Takashi Miyakawa, Kenji Koide, Akira Maruyama
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Patent number: 6588577Abstract: In order to prevent deformations, cracks and breakages of thin-walled ceramic honeycomb shaped bodies upon conveying them, a system for conveying such ceramic shaped bodies and cradles used for the system are provided.Type: GrantFiled: July 30, 2001Date of Patent: July 8, 2003Assignee: NGK Insulators, Ltd.Inventors: Takashi Miyakawa, Yuji Ueda, Satoshi Sugiyama
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Publication number: 20020046925Abstract: In order to prevent deformations, cracks and breakages of thin-walled ceramic honeycomb shaped bodies upon conveying them, a system for conveying such ceramic shaped bodies and cradles used for the system are provided.Type: ApplicationFiled: July 30, 2001Publication date: April 25, 2002Inventors: Takashi Miyakawa, Yuji Ueda, Satoshi Sugiyama
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Publication number: 20020043444Abstract: A ceramic shaped body-positioning system which can accurately position even a thin-walled ceramic honeycomb shaped body without occurring deformations, cracks and breakages of the ceramic shaped bodies and which is particularly suitable for positioning odd-shaped products is provided. A positioning system 1 for a ceramic shaped body 2 is used for positioning the ceramic shaped body, 2 to accurately convey the ceramic shaped body 2 to the next step. The positioning system 1 comprises a centering table 3 for placing the ceramic shaped body 2, a plurality of chucking unit 4-1 each consisting of a chucking body 5-1 and a pair of ceramic shaped body-pushing members 5-1a and 5-1b provided in the chucking body, and a drive unit 6 for moving the chucking unit 4-1 toward/away from the ceramic shaped body 2 on the centering table 3.Type: ApplicationFiled: August 1, 2001Publication date: April 18, 2002Inventors: Takashi Miyakawa, Kenji Koide, Akira Maruyama
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Patent number: 6074141Abstract: A scroll member has a scroll wall having an axial end having a transverse surface on which a groove 20 is cut along the spiral direction of the scroll wall, to which groove a seal member contacting a facing scroll member is received. The scroll wall has a radially inner portion having a width larger than the width of the remaining part of the scroll wall. At the radially inner portion, the groove is also widened. When molding the scroll member, a recess deeper than the depth of the groove to be machined is created. The groove is obtained by machining the scroll member as molded by a milling tool. The widened portion of the groove is formed by moving a milling tool along a closed trajectory, so that the recess is left un-machined.Type: GrantFiled: August 2, 1996Date of Patent: June 13, 2000Assignees: Nippondenso Co., Ltd., Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Kimihiro Ishikawa, Takashi Miyakawa, Yasushi Watanabe, Tetsuhiko Fukanuma, Shinya Yamamoto
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Patent number: 5584677Abstract: A base plate 41 of a movable scroll member 4 has, at its outer periphery, a section 44 with no scroll wall, while a scroll wall 22 of a stationary scroll member 2 has a section 24 for connecting to an outer cylindrical shell 22. These sections 44 and 24 make a relative lateral slide movement during an orbital movement of the movable scroll member 4 with respect to the stationary scroll member 2. These sections 44 and 24 have axially faced inner and outer edges 44-1 and 24-1, over which the relative lateral movement occurs. These inner and outer edges 44-1 and 24-1 are bevelled, the bevelling being such that any skewed movement of the movable scroll member with respect to the stationary scroll member does not cause locally increased contact pressure, thereby preventing galling as well as seizing.Type: GrantFiled: March 14, 1995Date of Patent: December 17, 1996Assignees: Nippondenso Co., Ltd., Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Kimihiro Ishikawa, Takashi Miyakawa, Tetsuhiko Fukanuma, Tetsuo Yoshida
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Patent number: 5580228Abstract: A scroll member has a scroll wall having an axial end having a transverse surface on which a groove 20 is cut along the spiral direction of the scroll wall, to which groove a seal member contacting a facing scroll member is received. The scroll wall having a radially inner portion of having a width larger than the width of remaining part of the scroll wall. At the radially inner portion, the groove is also widened. When molding the scroll member, a recess deeper than the depth of the groove to be machined is created. The groove is obtained by machining the scroll member as molded by a milling tool. The widened portion of the groove is formed by moving a milling tool along a closed trajectory, so that the recess is left un-machined.Type: GrantFiled: December 27, 1994Date of Patent: December 3, 1996Assignees: Nippondenso Co., Ltd., Kabushiki Kaisha Toyoda Jidoshokki SeisakuchoInventors: Kimihiro Ishikawa, Takashi Miyakawa, Yasushi Watanabe, Tetsuhiko Fukanuma, Shinya Yamamoto
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Patent number: D505282Type: GrantFiled: March 31, 2004Date of Patent: May 24, 2005Inventor: Takashi Miyakawa
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Patent number: D508174Type: GrantFiled: March 31, 2004Date of Patent: August 9, 2005Inventor: Takashi Miyakawa