Patents by Inventor Nobuharu Naito
Nobuharu Naito 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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Patent number: 10316883Abstract: A blind nut including an internal threaded portion, a hollow tubular portion adjacent to the internal threaded portion, and a flange with hole, formed at the end on the opposite side to the internally threaded portion. The internal threaded portion is inserted into an attaching hole of the attached-to member, a part of the tubular portion is plastically deformed to expand in diameter, and the attached-to member is held between the deformed expanded diameter portion and the flange. The internal threaded portion includes a first straight portion adjacent to the tubular portion, a first tapered portion with an outside diameter gradually decreasing from the first straight portion, a second straight portion with an outside diameter smaller than the first straight portion, a second tapered portion with an outside diameter decreasing from the first straight portion, and a third straight portion with an outside diameter smaller than the second straight portion.Type: GrantFiled: April 22, 2015Date of Patent: June 11, 2019Assignee: NEWFREY LLCInventors: Takanori Makino, Nobuharu Naito, Kanji Sakoda, Shinichi Suzuki
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Publication number: 20160010679Abstract: A blind nut including an internal threaded portion, a hollow tubular portion adjacent to the internal threaded portion, and a flange with hole, formed at the end on the opposite side to the internally threaded portion. The internal threaded portion is inserted into an attaching hole of the attached-to member, a part of the tubular portion is plastically deformed to expand in diameter, and the attached-to member is held between the deformed expanded diameter portion and the flange. The internal threaded portion includes a first straight portion adjacent to the tubular portion, a first tapered portion with an outside diameter gradually decreasing from the first straight portion, a second straight portion with an outside diameter smaller than the first straight portion, a second tapered portion with an outside diameter decreasing from the first straight portion, and a third straight portion with an outside diameter smaller than the second straight portion.Type: ApplicationFiled: April 22, 2015Publication date: January 14, 2016Inventors: Takanori MAKINO, Nobuharu NAITO, Kanji SAKODA, Shinichi SUZUKI
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Patent number: 8434215Abstract: A self-piercing rivet setting machine comprises a C-shaped arm and a receiver section disposed at one end of the C-shaped arm to receive a self-piercing rivet fed from a feeder. The receiver section has a rivet-reach detection sensor to detect the presence or absence of a self-piercing rivet in a driving chamber therein. If the rivet-reach detection sensor detects the absence of any self-piercing rivet in the driving chamber, the sensor outputs a signal to prevent a punch from being driven.Type: GrantFiled: February 4, 2011Date of Patent: May 7, 2013Assignee: Newfrey LLCInventors: Nobuharu Naito, Masahiro Hasegawa, Itsuo Endo, Misao Tsutsumi, Takashige Sekimoto
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Publication number: 20110173803Abstract: A self-piercing rivet setting machine comprises a C-shaped arm and a receiver section disposed at one end of the C-shaped arm to receive a self-piercing rivet fed from a feeder. The receiver section has a rivet-reach detection sensor to detect the presence or absence of a self-piercing rivet in a driving chamber therein. If the rivet-reach detection sensor detects the absence of any self-piercing rivet in the driving chamber, the sensor outputs a signal to prevent a punch from being driven.Type: ApplicationFiled: February 4, 2011Publication date: July 21, 2011Applicant: NEWFREY LLCInventors: Nobuharu NAITO, Masahiro HASEGAWA, Itsuo ENDO, Misao TSUTSUMI, Takashige SEKIMOTO
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Patent number: 7222405Abstract: In an apparatus in which workpieces are joined by self-piercing rivets, for example, a jig is used to determine whether axial alignment of a punch and a die is within an acceptable range. The jig substitutes for a die and has a shank and a head, the shank fitting within a die-receiving bore of the apparatus and the head having an axial opening receiving the punch when alignment is within the acceptable range. The head is constructed to permit viewing of the relationship of the punch and the opening.Type: GrantFiled: May 13, 2004Date of Patent: May 29, 2007Assignee: Newfrey LLCInventor: Nobuharu Naito
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Patent number: 7043826Abstract: A hand-held power performs three operations, selectively. A first operation corrects the setting of an improperly set self-piercing rivet. A second operation removes a self-piercing rivet from workpieces. A third operation sets a solid rivet, which may replace a removed self-piercing rivet. For performing these operations, three interchangeable sets of components are provided.Type: GrantFiled: May 25, 2004Date of Patent: May 16, 2006Assignee: Newfrey LLCInventor: Nobuharu Naito
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Patent number: 6961984Abstract: In order to detect setting defects of a self-piercing rivet in a self-piercing rivet setting machine, on a graph having X-Y coordinates representing a rivet driven stroke and a rivet driving load, a normal upper limit curve 37 defining the upper limit of a normal setting range and a normal lower limit curve 38 defining the lower limit of the normal setting range are plotted to detect a conventionally detectable setting defects. Further, a defect upper limit curve 39 and a defect lower limit curve 41 which are obtained from an additional setting defect different from the conventionally detectable setting defects are plotted between the normal upper limit curve and the normal lower limit curve, so that the additional setting defect is detected when a plotted curve 45 of actual-measurement data of a rivet under a rivet driving operation lies between the defect upper and lower limit curves.Type: GrantFiled: December 10, 2003Date of Patent: November 8, 2005Assignee: Newfrey LLCInventors: Nobuharu Naito, Toshiaki Amano
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Patent number: 6942134Abstract: A self-piercing rivet setting machine 1 comprises a C-shaped frame 3, a punch 9 disposed at one end of the C-shaped frame 3, and a die 10 disposed at the other end of the C-shaped frame 3. The punch is attached to the edge of a receiver unit 14 and it is pressed against the die by a punch-driving unit 11. A plurality of workpieces are placed between the punch and the die to be connected with each other by driving a self-piercing rivet in the workpieces to cause the self-piercing rivet to pierce the workpieces. The receiver unit 14 includes a hollow shaft 17 having one end connected with a feeding tube 13 extending from a feeding device. The hollow shaft 17 is supported by a support tube 15 of the C-shaped frame 3. The receiver unit 14 further includes a receiver head 18 having an edge to which the punch is attached. The receiver head 18 is formed to receive the self-piercing rivet fed from the other end of the hollow shaft 17 and to allow the received self-piercing rivet to be held by the punch one by one.Type: GrantFiled: October 8, 2003Date of Patent: September 13, 2005Assignee: Newfrey LLCInventor: Nobuharu Naito
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Patent number: 6910263Abstract: A self-piercing rivet setting apparatus (9) comprises a punch (14) and a die (18) for driving a self-piercing rivet into a plurality of workpieces including a receiving-side workpiece adjacent to the die. The self-piercing rivet has a large-diameter head and a hollowed leg. The leg is driven to pierce the workpieces while allowing the front end of the leg to be expanded and deformed in its radial outward direction and to be stayed in the receiving-side workpiece without passing therethrough, to connect the plurality of workpieces with each other by the expanded leg and the head. The die includes a first die member (26) having a first cavity (25), and a second die member (30) having a second cavity (27) and a protruding pin (29) provided at the center of the second cavity. The first cavity is adapted to allow the leg of the self-piercing to be driven into the workpieces in a straight direction when the self-piercing rivet is pressed by the punch (14).Type: GrantFiled: May 26, 2004Date of Patent: June 28, 2005Assignee: Newfrey LLCInventor: Nobuharu Naito
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Publication number: 20040261245Abstract: In an apparatus in which workpieces are joined by self-piercing rivets, for example, a jig is used to determine whether axial alignment of a punch and a die is within an acceptable range. The jig substitutes for a die and has a shank and a head, the shank fitting within a die-receiving bore of the apparatus and the head having an axial opening receiving the punch when alignment is within the acceptable range. The head is constructed to permit viewing of the relationship of the punch and the opening.Type: ApplicationFiled: May 13, 2004Publication date: December 30, 2004Applicant: Newfrey LLCInventor: Nobuharu Naito
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Publication number: 20040261259Abstract: A hand-held power performs three operations, selectively. A first operation corrects the setting of an improperly set self-piercing rivet. A second operation removes a self-piercing rivet from workpieces. A third operation sets a solid rivet, which may replace a removed self-piercing rivet. For performing these operations, three interchangeable sets of components are provided.Type: ApplicationFiled: May 25, 2004Publication date: December 30, 2004Applicant: Newfrey LLCInventor: Nobuharu Naito
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Publication number: 20040216304Abstract: A self-piercing rivet setting apparatus (9) comprises a punch (14) and a die (18) for driving a self-piercing rivet into a plurality of workpieces including a receiving-side workpiece adjacent to the die. The self-piercing rivet has a large-diameter head and a hollowed leg. The leg is driven to pierce the workpieces while allowing the front end of the leg to be expanded and deformed in its radial outward direction and to be stayed in the receiving-side workpiece without passing therethrough, to connect the plurality of workpieces with each other by the expanded leg and the head. The die includes a first die member (26) having a first cavity (25), and a second die member (30) having a second cavity (27) and a protruding pin (29) provided at the center of the second cavity. The first cavity is adapted to allow the leg of the self-piercing to be driven into the workpieces in a straight direction when the self-piercing rivet is pressed by the punch (14).Type: ApplicationFiled: May 26, 2004Publication date: November 4, 2004Inventor: Nobuharu Naito
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Publication number: 20040148761Abstract: In order to detect setting defects of a self-piercing rivet in a self-piercing rivet setting machine, on a graph having X-Y coordinates representing a rivet driven stroke and a rivet driving load, a normal upper limit curve 37 defining the upper limit of a normal setting range and a normal lower limit curve 38 defining the lower limit of the normal setting range are plotted to detect a conventionally detectable setting defects. Further, a defect upper limit curve 39 and a defect lower limit curve 41 which are obtained from an additional setting defect different from the conventionally detectable setting defects are plotted between the normal upper limit curve and the normal lower limit curve, so that the additional setting defect is detected when a plotted curve 45 of actual-measurement data of a rivet under a rivet driving operation lies between the defect upper and lower limit curves.Type: ApplicationFiled: December 10, 2003Publication date: August 5, 2004Inventors: Nobuharu Naito, Toshiaki Amano
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Publication number: 20040111878Abstract: A self-piercing rivet setting machine 1 comprises a C-shaped frame 3, a punch 9 disposed at one end of the C-shaped frame 3, and a die 10 disposed at the other end of the C-shaped frame 3. The punch is attached to the edge of a receiver unit 14 and it is pressed against the die by a punch-driving unit 11. A plurality of workpieces are placed between the punch and the die to be connected with each other by driving a self-piercing rivet in the workpieces to cause the self-piercing rivet to pierce the workpieces. The receiver unit 14 includes a hollow shaft 17 having one end connected with a feeding tube 13 extending from a feeding device. The hollow shaft 17 is supported by a support tube 15 of the C-shaped frame 3. The receiver unit 14 further includes a receiver head 18 having an edge to which the punch is attached. The receiver head 18 is formed to receive the self-piercing rivet fed from the other end of the hollow shaft 17 and to allow the received self-piercing rivet to be held by the punch one by one.Type: ApplicationFiled: October 8, 2003Publication date: June 17, 2004Inventor: Nobuharu Naito