Patents by Inventor Ryo Nakatsu
Ryo Nakatsu 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: 20150035636Abstract: A resin-mold core includes right and left leg portions, and a yoke portion interconnecting those. The resin-mold core includes a magnetic core, and a mold component having the magnetic core embedded therein by molding. Openings where the magnetic core in the mold component is exposed are formed in multiple faces of the mold component that are upper, lower, front, rear, and right and left faces. Apart of the yoke portion of the resin-mold core corresponding to a location where terminals are drawn to the exterior of the core from coils attached to the outer circumferences of the leg portions of the core has no opening formed in the multiple faces of the mold component. Positioning members to coaxially align the leg portions of the opposing resin-mold core are formed in abutting faces of the leg portions of the resin-mold core.Type: ApplicationFiled: July 31, 2014Publication date: February 5, 2015Inventors: Ryo Nakatsu, Toshikazu Ninomiya, Kensuke Maeno
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Publication number: 20140292456Abstract: A reactor includes an annular core, coils, a sensor detecting a state of the reactor, and a connector outputting signal from the sensor. Resin-molded bodies are provided around the annular core. The resin-molded body has bobbins for the respective coils and core covering portions formed integrally with each other. An exposed area where no resin covers the bottom of the core is formed in the lower face of the covering portions. A holder to fasten the connector is formed integrally with the upper portion of the covering portion. An assembly including the resin-molded bodies in which the annular core is embedded, and the coils wound around the bobbins are retained in a metal casing. A clearance is formed between the assembly and the casing, and a filler is filled in this clearance. The filler covers the exposed area of the core bottom.Type: ApplicationFiled: March 19, 2014Publication date: October 2, 2014Applicant: TAMURA CORPORATIONInventors: Kotaro Suzuki, Ryo Nakatsu, Naoki Inoue, Kensuke Maeno
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Publication number: 20140217642Abstract: Divided cores 11, 12 includes left and right leg portions and a yoke portion and formed by molding a yoke portion side core material within resin. The leg portions of the divided core are formed by tubular core mounting portions 41, 42. I-shaped leg portion side core materials 51-53 and spacers 6 are mounted in the tubular core mounting portions. A ring-shaped molded core 1 is formed by abutting and integrating the respective leg portions of two divided cores, and a coil 100 is wound around the molded core.Type: ApplicationFiled: April 3, 2014Publication date: August 7, 2014Applicant: TAMURA CORPORATIONInventors: Kotaro Suzuki, Kensuke Maeno, Ryo Nakatsu
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Patent number: 8730000Abstract: Divided cores 11, 12 includes left and right leg portions and a yoke portion and formed by molding a yoke portion side core material within resin. The leg portions of the divided core are formed by tubular core mounting portions 41, 42. I-shaped leg portion side core materials 51-53 and spacers 6 are mounted in the tubular core mounting portions. A ring-shaped molded core 1 is formed by abutting and integrating the respective leg portions of two divided cores, and a coil 100 is wound around the molded core.Type: GrantFiled: October 25, 2012Date of Patent: May 20, 2014Assignee: Tamura CorporationInventors: Kotaro Suzuki, Kensuke Maeno, Ryo Nakatsu
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Publication number: 20130249666Abstract: First and second divisional cores each including right and left leg portions and a yoke interconnecting those together are formed by molding respective yoke-side core members in a resin. Cylindrical core mounting portions extending from the outer circumference of the surface of the yoke-side core member are formed integrally with the respective right and left leg portions of the first. divisional core. I-shaped leg-portion-side core members and spacers are attached in the cylindrical core mounting portion formed in each of the right and left leg portions. The surface of the yoke-side core member molded in the resin and the surface of the leg-portion-side core member are disposed so as to have a spacer therebetween. The two divisional cores are joined together by butting respective leg portions of the two divisional cores with each other to form an annular mold core, and a coil is wound around the mold core.Type: ApplicationFiled: March 21, 2013Publication date: September 26, 2013Applicant: Tamura CorporationInventors: Kotaro Suzuki, Kensuke Maeno, Ryo Nakatsu
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Publication number: 20130241686Abstract: A reactor includes a coil and a core unit having partial cores butted against one another to form a closed magnetic path. The partial cores include a first partial core forming and a second partial core. The first partial core is inserted in the hollow of the coil. A pressed face of the first partial core is oriented orthogonal to the winding axis direction of the coil. The second partial core is butted against the first partial core. A pressed face of the second partial core is oriented orthogonal to a direction different from the winding axis direction. The pressed face of the second partial core is a substantially flat plane.Type: ApplicationFiled: March 14, 2013Publication date: September 19, 2013Applicant: TAMURA CORPORATIONInventors: Ryo Nakatsu, Toshikazu Ninomiya, Kotaro Suzuki, Tsutomu Hamada
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Patent number: 8427271Abstract: A reactor part includes at least a winding and a magnetic substance core, in which the core includes a pair of winding portions around each the winding is wound, and a non-winding portion around which no winding is wound, wherein a cross-sectional area in a direction orthogonal to a magnetic path of the non-winding portion of the core is made smaller than a cross-sectional area in a direction orthogonal to a magnetic path of the each of winding portions.Type: GrantFiled: May 4, 2010Date of Patent: April 23, 2013Assignee: Tamura CorporationInventors: Ryo Nakatsu, Kensuke Maeno
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Publication number: 20120154100Abstract: A reactor coil includes first and second coil elements each formed by edgewise and rectangular winding of one piece of rectangular wire rod in a manner in which the wound rectangular wire rod is stacked rectangularly and cylindrically and, at a winding terminating end point of the first coil element, the rectangular wire rod is bent approximately 90 degrees in a direction opposite to the winding direction of the first coil element so that the rectangular wire rod is stacked in a direction opposite to the stacking direction of the first coil element and is wound edgewisely and rectangularly in a direction opposite to the winding direction of the first coil element to form the second coil element and, as a result, the first coil element and second coil element are aligned in parallel to each other in a continuous state.Type: ApplicationFiled: December 8, 2011Publication date: June 21, 2012Applicants: Tamura Fa System Corporation, Tamura CorporationInventors: Masatoshi HASU, Kaoru HATTORI, Ryo NAKATSU, Sei URANO, Kensuke MAENO
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Patent number: 8091211Abstract: A reactor coil includes first and second coil elements each formed by edgewise and rectangular winding of one piece of rectangular wire rod in a manner in which the wound rectangular wire rod is stacked rectangularly and cylindrically and, at a winding terminating end point of the first coil element, the rectangular wire rod is bent approximately 90 degrees in a direction opposite to the winding direction of the first coil element so that the rectangular wire rod is stacked in a direction opposite to the stacking direction of the first coil element and is wound edgewisely and rectangularly in a direction opposite to the winding direction of the first coil element to form the second coil element and, as a result, the first coil element and second coil element are aligned in parallel to each other in a continuous state.Type: GrantFiled: May 11, 2007Date of Patent: January 10, 2012Assignees: Tamura Corporation, Tamura Fa System CorporationInventors: Masatoshi Hasu, Kaoru Hattori, Ryo Nakatsu, Sei Urano, Kensuke Maeno
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Patent number: 8033723Abstract: A securing structure for securing a measuring member having a sensor element and a lead elongated from the sensor element to a subject to be measured, the securing structure includes the measuring member including a measuring section having a covered portion in which a part of the lead elongated from the sensor element and having a predetermined length is covered by a material having a rigidity larger than that of the lead, the covered portion being folded toward the side of the lead elongated from the covered portion to produce a folded end portion; and the subject to be measured having an insertion section through which the measuring section is inserted from the side of the folded end portion, a container section which contains the measuring section inserted through the insertion section, and a contact section with which the head portion of the covered portion comes into contact and by which the measuring section is prevented from falling out, when the lead is pulled.Type: GrantFiled: April 30, 2009Date of Patent: October 11, 2011Assignee: Tamura CorporationInventors: Kensuke Maeno, Masatoshi Hasu, Koutarou Suzuki, Ryo Nakatsu
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Publication number: 20110169598Abstract: A reactor part includes at least a winding and a magnetic substance core, in which the core includes a pair of winding portions around each the winding is wound, and a non-winding portion around which no winding is wound, wherein a cross-sectional area in a direction orthogonal to a magnetic path of the non-winding portion of the core is made smaller than a cross-sectional area in a direction orthogonal to a magnetic path of the each of winding portions.Type: ApplicationFiled: May 4, 2010Publication date: July 14, 2011Applicant: TAMURA CORPORATIONInventors: Ryo Nakatsu, Kensuke Maeno
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Patent number: 7961070Abstract: An inductor has a case having an opening, a core accommodated in the case, a coil wound on a part of the core and a fixing member fixed to the case. The fixing member fixes the core by contacting a top surface of the core facing the opening and elastically biasing the core toward a bottom surface of the case. The fixing member further includes a first plate portion and a first contacting portion. The first plate portion is disposed between the top surface of the core and the opening of the case and extending in parallel with the top surface of the core. The first contacting portion extends from a fore-end portion of the first plate portion so as to be U-shaped and having a distal end portion elastically push-contacting the top surface of the core.Type: GrantFiled: October 15, 2009Date of Patent: June 14, 2011Assignee: Tamura CorporationInventors: Kotaro Suzuki, Ryo Nakatsu
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Publication number: 20100226410Abstract: A securing structure for securing a measuring member having a sensor element and a lead elongated from the sensor element to a subject to be measured, the securing structure includes the measuring member including a measuring section having a covered portion in which a part of the lead elongated from the sensor element and having a predetermined length is covered by a material having a rigidity larger than that of the lead, the covered portion being folded toward the side of the lead elongated from the covered portion to produce a folded end portion; and the subject to be measured having an insertion section through which the measuring section is inserted from the side of the folded end portion, a container section which contains the measuring section inserted through the insertion section, and a contact section with which the head portion of the covered portion comes into contact and by which the measuring section is prevented from falling out, when the lead is pulled.Type: ApplicationFiled: April 30, 2009Publication date: September 9, 2010Applicant: TAMURA CORPORATIONInventors: Kensuke Maeno, Masatoshi Hasu, Koutarou Suzuki, Ryo Nakatsu
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Patent number: 7782168Abstract: A reactor part includes at least a winding and a magnetic substance core, in which the core includes a pair of winding portions around each the winding is wound, and a non-winding portion around which no winding is wound, wherein a cross-sectional area in a direction orthogonal to a magnetic path of the non-winding portion of the core is made smaller than a cross-sectional area in a direction orthogonal to a magnetic path of the each of winding portions.Type: GrantFiled: February 6, 2007Date of Patent: August 24, 2010Assignee: Tamura CorporationInventors: Ryo Nakatsu, Kensuke Maeno
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Publication number: 20100102912Abstract: An inductor has a case having an opening, a core accommodated in the case, a coil wound on a part of the core and a fixing member fixed to the case. The fixing member fixes the core by contacting a top surface of the core facing the opening and elastically biasing the core toward a bottom surface of the case. The fixing member further includes a first plate portion and a first contacting portion. The first plate portion is disposed between the top surface of the core and the opening of the case and extending in parallel with the top surface of the core. The first contacting portion extends from a fore-end portion of the first plate portion so as to be U-shaped and having a distal end portion elastically push-contacting the top surface of the core.Type: ApplicationFiled: October 15, 2009Publication date: April 29, 2010Inventors: Kotaro Suzuki, Ryo Nakatsu
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Publication number: 20090144967Abstract: [Problem] Manufacturing work of a coil is simplified and miniaturization of a reactor is achieved by reducing occupied space as much as possible.Type: ApplicationFiled: May 11, 2007Publication date: June 11, 2009Applicant: TAMURA CORPORATIONInventors: Masatoshi Hasu, Kaoru Hattori, Ryo Nakatsu, Sei Urano, Kensuke Maeno
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Publication number: 20090027151Abstract: To reduce a reactor core shape so as to decrease an entire reactor size and to lower a cost while improving DC superimposition of a high current value. In a reactor core (108), cross-sectional area W1a*Ha of two magnetic substance blocks (109a) making up a non-winding portion while no winding is wound are reduced by about 24% to 33% as compared to cross-sectional area Wb*Hb* in the direction orthogonal to magnetic paths of magnetic substance blocks (3b) making up a winding portion.Type: ApplicationFiled: February 6, 2007Publication date: January 29, 2009Inventors: Ryo Nakatsu, Kensuke Maeno