Patents by Inventor Takuma Nonaka
Takuma Nonaka 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: 20240068884Abstract: A thermosensitive part sensing temperature; a temperature sensor for measurement provided in the unit and measuring temperature by contacting the unit with a body to be measured; a temperature detecting part detecting, from when the unit contacts the body, the time when the sensor senses a difference from an initial temperature of the sensor, and a measured temperature of the sensor at that time, and detecting, from when the difference is sensed, a time after a certain length of time and a measured temperature of the sensor at that time; an estimating part estimating, from the time when the difference is sensed and a time after a certain length of time, the time when the thermosensitive part contacts the body, and the measured temperature at that time; and a heat conduction analyzing part estimating the measured temperature based on output information from the temperature detecting part and the estimating part.Type: ApplicationFiled: January 12, 2022Publication date: February 29, 2024Applicants: SEMITEC Corporation, National Institute of Technology, HIROSAKI UNIVERSITYInventors: Shigenao MARUYAMA, Yuya ISEKI, Takuma KOGAWA, Takashi NONAKA, Yasushi HOSOKAWA, Takahiro OKABE, Yutaro TABATA, Tadashi MATSUDATE, Toshinori NAKAJIMA, Masaya HIGASHI, Manabu ORITO
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Patent number: 8956091Abstract: In a drilling tool including: a shank located at a tip side of a tool main body; and a bit located at a tip side of the shank, the shank and the bit (connection body) are connected to each other via screws, and a guide part for center alignment for aligning the centers of the shank and the bit is formed in the vicinity of screw portions of the shank and the bit.Type: GrantFiled: August 26, 2008Date of Patent: February 17, 2015Assignee: Max Co., Ltd.Inventors: Takuma Nonaka, Terufumi Hamano, Michio Yamashita
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Patent number: 8726526Abstract: A portable cutting machine is provided with a cutting machine main body, a surface plate rotatably supported by the cutting machine main body, a saw blade supported by the cutting machine main body rotatably around a first axis, and a lower guard supported by the cutting machine main body rotatably around a second axis. The first axis is located on one side of the surface plate. A part of the saw blade passes through an opening portion formed to penetrate through the surface plate and is exposed to the other side of the surface plate. The part of the saw blade exposed to the other side is covered by the lower guard. The first axis is parallel to the second axis. The first axis is located closer to a side of the surface plate than the second axis.Type: GrantFiled: March 5, 2010Date of Patent: May 20, 2014Assignees: Max Co., Ltd., Ryobi Ltd.Inventors: Kazunobu Yoshimura, Tomofumi Ichiba, Takuma Nonaka, Atsuhito Okada
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Publication number: 20120011731Abstract: A portable cutting machine is provided with a cutting machine main body (3), a surface plate (6) rotatably supported by the cutting machine main body (3), a saw blade (1) supported by the cutting machine main body (3) rotatably around a first axis (O1), and a lower guard (25) supported by the cutting machine main body (3) rotatably around a second axis (O2). The first axis (O1) is located on one side of the surface plate (6). A part of the saw blade (1) passes through an opening portion (24) formed to penetrate through the surface plate (6) and is exposed to the other side of the surface plate (6). The part of the saw blade (1) exposed to the other side is covered by the lower guard (25). The first axis (O1) is parallel to the second axis (O2). The first axis (O1) is located closer to a side of the surface plate (6) than the second axis (O2).Type: ApplicationFiled: March 5, 2010Publication date: January 19, 2012Applicants: RYOBI LTD., MAX CO., LTD.Inventors: Kazunobu Yoshimura, Tomofumi Ichiba, Takuma Nonaka, Atsuhito Okada
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Publication number: 20110308095Abstract: A portable cutting machine is provided with: a cutting machine main body (3); a saw blade (1) provided rotatably with respect to the cutting machine main body (3); an electric motor (2) adapted to drive the saw blade (1); a handle (4) which is provided between the saw blade (1) and the electric motor (2) in a first direction parallel to a rotation shaft (9) of the saw blade (1) and extends in a second direction perpendicular to the first direction; a battery pack (5) adapted to drive the electric motor (2); and a surface plate (6) rotatably supported by the cutting machine main body (3). A center in the first direction of the battery pack (5) is located closer to a side of the electric motor (2) than a center in the first direction of the handle (4). The rotation shaft (9) of the saw blade (1) is located on one side of the surface plate (6). A part of the saw blade (1) passes through an opening portion (16) penetrating through the surface plate (6) and is exposed to the other side of the surface plate (6).Type: ApplicationFiled: March 5, 2010Publication date: December 22, 2011Applicants: RYOBI LTD., MAX CO., LTD.Inventors: Kazunobu Yoshimura, Tomofumi Ichiba, Takuma Nonaka, Atsuhito Okada
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Patent number: 8047193Abstract: A non-core drill bit is provided with a metallic seat 2 attached to the tip of a shank of a boring tool, a cylindrical first diamond grindstone body 3 fixed to the metallic seat 2 and having a recessed cutout portion 10 to be opened to one side, and a second diamond grindstone body 4 installed inside the recessed cutout portion 10. The tip of the second diamond grindstone body 4 is positioned on the metallic seat 2 side from the tip of the first diamond grindstone body 3. The inner side of the tip face of the first diamond grindstone body 3 is preferably formed in an approximately reverse-conical recessed shape.Type: GrantFiled: August 9, 2007Date of Patent: November 1, 2011Assignee: Max Co., Ltd.Inventors: Takuma Nonaka, Naohide Murakami, Kazuhisa Morita
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Publication number: 20100260562Abstract: A non-core drill bit is provided with a metallic seat 2 attached to the tip of a shank of a boring tool, a cylindrical first diamond grindstone body 3 fixed to the metallic seat 2 and having a recessed cutout portion 10 to be opened to one side, and a second diamond grindstone body 4 installed inside the recessed cutout portion 10. The tip of the second diamond grindstone body 4 is positioned on the metallic seat 2 side from the tip of the first diamond grindstone body 3. The inner side of the tip face of the first diamond grindstone body 3 is preferably formed in an approximately reverse-conical recessed shape.Type: ApplicationFiled: August 9, 2007Publication date: October 14, 2010Applicant: MAX CO., LTDInventors: Takuma Nonaka, Naohide Murakami, Kazuhisa Morita
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Publication number: 20100189523Abstract: In a drilling tool including: a shank located at a tip side of a tool main body; and a bit located at a tip side of the shank, the shank and the bit (connection body) are connected to each other via screws, and a guide part for center alignment for aligning the centers of the shank and the bit is formed in the vicinity of screw portions of the shank and the bit.Type: ApplicationFiled: August 26, 2008Publication date: July 29, 2010Applicant: MAX CO., LTD.Inventors: Takuma Nonaka, Terufumi Hamano, Michio Yamashita
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Patent number: 7568529Abstract: A drill tool is provided with: a drive source accommodated in a tool body 2; a bit drive shaft 3 which is rotation-driven by the drive source and provided projectingly from a front end of the drill body 2; and a diamond bit 4 attached to a front end of the bit drive shaft 3. Further, the drill tool is provided with a vibrating apparatus which generates vibrating force which acts in the axial direction of the bit drive shaft 3, a magnitude of which pulsates, and vibrating moment which acts in the rotational direction of the bit drive shaft 3, a magnitude of which pulsates.Type: GrantFiled: February 15, 2006Date of Patent: August 4, 2009Assignee: Max Co., Ltd.Inventors: Takuma Nonaka, Naohide Murakami
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Publication number: 20080156507Abstract: A drill tool is provided with: a drive source accommodated in a tool body 2; a bit drive shaft 3 which is rotation-driven by the drive source and provided projectingly from a front end of the drill body 2; and a diamond bit 4 attached to a front end of the bit drive shaft 3. Further, the drill tool is provided with a vibrating apparatus which generates vibrating force which acts in the axial direction of the bit drive shaft 3, a magnitude of which pulsates, and vibrating moment which acts in the rotational direction of the bit drive shaft 3, a magnitude of which pulsates.Type: ApplicationFiled: February 15, 2006Publication date: July 3, 2008Inventors: Takuma Nonaka, Naohide Murakami
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Patent number: 7103979Abstract: Fanned air generated by a fan to cool a motor is discharged from a housing through fanned air discharge ports toward an opening formed in a base. The fanned air discharged toward the opening is then introduced into a groove in fluid communication with the opening. The groove is formed in a bottom surface of the base and has an open side at a front side of the base. The fanned air is then discharged from the front side of the base, blowing off saw dust on a cutting object so as to prevent dust from accumulating on a marking line on the cutting object.Type: GrantFiled: October 21, 2003Date of Patent: September 12, 2006Assignee: Hitachi Koki Co., Ltd.Inventors: Kenichirou Yoshida, Hideyuki Tanimoto, Tomomasa Nishikawa, Shinji Takano, Takuma Nonaka, Kenji Niwa, Teruo Imai, Satoshi Shimada
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Patent number: 6951057Abstract: A portable circular saw providing high visibility to a cutting mark line and sufficient operability even in case of an angled cutting. A slant position fixing member upstands from a front side of a base, and a tiltable plate is provided pivotally to the base. A front end of a saw cover is connected to the tiltable plate by a pivot pin. A main body roratably supporting a circular saw blade is pivotally movable by a pivotal movement of the tiltable plate to change inclination of the circular saw blade relative to the base. The tiltable plate is positioned in confrontation with the slant position fixing member, and fastening unit fixes the tiltable plate to the slant position fixing member to maintain a desired inclination of the circular saw blade. The fastening unit includes a thread extending through an arcuate slot formed in the slant position fixing member and engaging the tiltable plate, and a lever fixed to one end of the thread.Type: GrantFiled: January 9, 2003Date of Patent: October 4, 2005Assignee: Hitachi Koki Co., Ltd.Inventors: Kenichirou Yoshida, Takuma Nonaka
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Publication number: 20040107584Abstract: Fanned air generated by a fan to cool a motor is discharged from a housing through fanned air discharge ports toward an opening formed in a base. The fanned air discharged toward the opening is then introduced into a groove in fluid communication with the opening. The groove is formed in a bottom surface of the base and has an open side at a front side of the base. The fanned air is then discharged from the front side of the base, blowing off saw dust on a cutting object so as to prevent dust from accumulating on a marking line on the cutting object.Type: ApplicationFiled: October 21, 2003Publication date: June 10, 2004Inventors: Kenichirou Yoshida, Hideyuki Tanimoto, Tomomasa Nishikawa, Shinji Takano, Takuma Nonaka, Kenji Niwa, Teruo Imai, Satoshi Shimada
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Publication number: 20030131484Abstract: A portable circular saw providing high visibility to a cutting mark line and sufficient operability even in case of an angled cutting. A slant position fixing member upstands from a front side of a base, and a tiltable plate is provided pivotally to the base. A front end of a saw cover is connected to the tiltable plate by a pivot pin. A main body roratably supporting a circular saw blade is pivotally movable by a pivotal movement of the tiltable plate to change inclination of the circular saw blade relative to the base. The tiltable plate is positioned in confrontation with the slant position fixing member, and fastening unit fixes the tiltable plate to the slant position fixing member to maintain a desired inclination of the circular saw blade. The fastening unit includes a thread extending through an arcuate slot formed in the slant position fixing member and engaging the tiltable plate, and a lever fixed to one end of the thread.Type: ApplicationFiled: January 9, 2003Publication date: July 17, 2003Applicant: HITACHI KOKI CO., LTD.Inventors: Kenichirou Yoshida, Takuma Nonaka
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Patent number: 5848472Abstract: A portable circular saw is disclosed which includes a mechanism for simply and efficiently adjusting parallelism of the saw blade to the base. Two connecting members positioned at the front and rear of the saw connect the base of the saw to the saw cover, and the mechanism for adjusting parallelism is part of the front connecting member.Type: GrantFiled: October 25, 1996Date of Patent: December 15, 1998Assignee: Hitachi Koki Co., Ltd.Inventors: Naoya Eto, Hiroshi Sato, Takuma Nonaka, Kenji Niwa
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Patent number: 5121545Abstract: An electric circular saw of the type including a mechanism for tilting a base relative to the plane of a blade is provided wherein a side knob for being gripped by the user during cutting operation pivotally connects the base and a body of the circular saw through a base attachment portion and a bevel plate having an arcuate guide groove extending through an angular distance corresponding to a tilt angle of the base relative to the blade. The side knob is threaded to the base attachment portion and movable together with the base when the base is tilted. The side knob is spaced from a guide surface of the base by a distance at least larger than a maximum radius of the side knob. The distance between the base and the side knob is constant regardless of the relative angular position of said base and the blade, so that circular saw can be held stably and hence is capable of performing an accurate cutting operation.Type: GrantFiled: December 14, 1990Date of Patent: June 16, 1992Assignee: Hitachi Koki Company LimitedInventors: Takuma Nonaka, Kimitaka Abo, Kouichi Sawada, Junichi Kikuchi, Yoshio Osada
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Patent number: D475266Type: GrantFiled: August 6, 2002Date of Patent: June 3, 2003Assignee: Hitachi Koki Co., Ltd.Inventors: Masato Sakai, Takuma Nonaka