Patents by Inventor Shigeto Mori
Shigeto Mori 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: 11953045Abstract: To provide a screw thread which achieves a further reduction in screwing torque while securing removability of a coating film or the like and which is capable of stabilizing conductivity. In a screw thread in which a recessed portion (7) is partially provided on a flank surface (131) of a screw thread ridge provided on a screw thread shaft main body (5), a screw thread ridge (13) in a section where the recessed portion (7) is formed is smaller than a regular screw thread ridge (3), and a ridge height (H12) in a distal end portion in a screwing direction is lower than a ridge height (H11) in a rear end portion in the screwing direction W.Type: GrantFiled: February 3, 2020Date of Patent: April 9, 2024Assignee: TOPURA CO., LTD.Inventors: Shigeto Mori, Mayumi Matsuno, Naoki Horiuchi
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Patent number: 11795986Abstract: An external screw member includes a parallel screw portion and a tapered screw portion provided on a side further toward a tip end than the parallel screw portion, and a plurality of sets of step portion and a transition screw thread portion are provided on at least one of the parallel screw portion and the tapered screw portion, the step portion having a reduced thread height in a radial direction and the transition screw thread portion gradually increasing in diameter from the step portion in an anti-driving rotation direction so as to reach a thread height of a normal screw thread portion. A top portion of the transition screw thread portion is positioned at an offset toward a pressure side relative to a position of a regular screw pitch in a minimum diameter portion of the step portion, and transitions to the regular screw pitch in the anti-driving rotation direction.Type: GrantFiled: January 27, 2021Date of Patent: October 24, 2023Assignee: TOPURA CO., LTD.Inventors: Minoru Sugiyama, Shigeto Mori, Mayumi Matsuno, Naoki Horiuchi
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Publication number: 20220128082Abstract: To provide a screw thread which achieves a further reduction in screwing torque while securing removability of a coating film or the like and which is capable of stabilizing conductivity. In a screw thread in which a recessed portion (7) is partially provided on a flank surface (131) of a screw thread ridge provided on a screw thread shaft main body (5), a screw thread ridge (13) in a section where the recessed portion (7) is formed is smaller than a regular screw thread ridge (3), and a ridge height (H12) in a distal end portion in a screwing direction is lower than a ridge height (H11) in a rear end portion in the screwing direction W.Type: ApplicationFiled: February 3, 2020Publication date: April 28, 2022Applicants: TOPURA CO., LTD., TOPURA CO., LTD.Inventors: Shigeto MORI, Mayumi MATSUNO, Naoki HORIUCHI
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Publication number: 20210231157Abstract: An external screw member includes a parallel screw portion and a tapered screw portion provided on a side further toward a tip end than the parallel screw portion, and a plurality of sets of step portion and a transition screw thread portion are provided on at least one of the parallel screw portion and the tapered screw portion, the step portion having a reduced thread height in a radial direction and the transition screw thread portion gradually increasing in diameter from the step portion in an anti-driving rotation direction so as to reach a thread height of a normal screw thread portion. A top portion of the transition screw thread portion is positioned at an offset toward a pressure side relative to a position of a regular screw pitch in a minimum diameter portion of the step portion, and transitions to the regular screw pitch in the anti-driving rotation direction.Type: ApplicationFiled: January 27, 2021Publication date: July 29, 2021Inventors: Minoru SUGIYAMA, Shigeto MORI, Mayumi MATSUNO, Naoki HORIUCHI
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Patent number: 10954985Abstract: An external screw member includes a head, a shank, a parallel threaded portion, a tapered threaded portion, a screw thread, a convex portion and a screw driving side end face of the convex portion. The convex portion protruding more radially outward than the crest of the screw thread is formed in at least one of the parallel threaded portion and the tapered threaded portion over the tapered threaded portion and the parallel threaded portion. The screw driving side end face of the convex portion is configured to form an inclined plane which gradually rises from a root position of the end face at the side of the crest of the screw thread toward a crest of the convex portion in a direction opposite to a screw driving direction of the screw thread to reach the crest of the convex portion.Type: GrantFiled: May 20, 2020Date of Patent: March 23, 2021Assignee: TOPURA CO., LTD.Inventors: Takehiro Okuwaki, Takeki Sawanishi, Shigeto Mori, Mayumi Matsuno, Yoshie Sato
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Publication number: 20200370587Abstract: An external screw member includes a head, a shank, a parallel threaded portion, a tapered threaded portion, a screw thread, a convex portion and a screw driving side end face of the convex portion. The convex portion protruding more radially outward than the crest of the screw thread is formed in at least one of the parallel threaded portion and the tapered threaded portion over the tapered threaded portion and the parallel threaded portion. The screw driving side end face of the convex portion is configured to form an inclined plane which gradually rises from a root position of the end face at the side of the crest of the screw thread toward a crest of the convex portion in a direction opposite to a screw driving direction of the screw thread to reach the crest of the convex portion.Type: ApplicationFiled: May 20, 2020Publication date: November 26, 2020Inventors: Takehiro OKUWAKI, Kenju SAWANISHI, Shigeto MORI, Mayumi MATSUNO, Yoshie SATO
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Patent number: 10294977Abstract: A fastening member includes a first alloy portion and a second alloy portion. The first alloy portion is made of an aluminum alloy including 0.005 wt % to 5.0 wt % zinc and 0.6 wt % to 2.0 wt % magnesium and is provided to a part that comes into contact with at least one of a plurality of members serving as a fastening target. The second alloy portion is made of an aluminum alloy including more than 2.0 wt % and 5.0 wt % or less magnesium and more than 5.0 wt % and 10 wt % or less zinc and is joined to the first alloy portion.Type: GrantFiled: March 20, 2015Date of Patent: May 21, 2019Assignees: NHK Spring Co., Ltd., TOPURA CO., LTD.Inventors: Toshio Kazama, Takeshi Suzuki, Shigeto Mori
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Patent number: 9752609Abstract: A threaded fastener is provided in which a head bearing surface can be in full intimate contact with a counterpart. The threaded fastener is provided with a head (10), and a screw shank (20) extending from the head (10). The screw shank (20) is provided with a parallel thread portion (22) having a complete screw thread formed therein, a neck portion (24) having no screw thread, a transition thread portion (26) having an incomplete screw thread formed to extend from the parallel thread portion (22) toward the neck portion (24) with its root diameter being the same as that of the complete screw thread and with its thread height gradually becoming lower to reach the neck portion, and an underneck rounded portion (28) formed in a corner angle portion between the neck portion (24) and a head bearing surface (11), wherein the neck portion (24) is work hardened with its diameter being narrowed from a root diameter of the parallel thread portion (22).Type: GrantFiled: July 8, 2014Date of Patent: September 5, 2017Assignee: TOPURA CO., LTD.Inventors: Shigeto Mori, Hiroshi Nakano, Yosuke Okamura, Seiya Hoshino
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Publication number: 20170089384Abstract: A fastening member includes a first alloy portion and a second alloy portion. The first alloy portion is made of an aluminum alloy including 0.005 wt % to 5.0 wt % zinc and 0.6 wt % to 2.0 wt % magnesium and is provided to a part that comes into contact with at least one of a plurality of members serving as a fastening target. The second alloy portion is made of an aluminum alloy including more than 2.0 wt % and 5.0 wt % or less magnesium and more than 5.0 wt % and 10 wt % or less zinc and is joined to the first alloy portion.Type: ApplicationFiled: March 20, 2015Publication date: March 30, 2017Inventors: Toshio Kazama, Takeshi Suzuki, Shigeto Mori
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Publication number: 20160169263Abstract: A threaded fastener is provided in which a head bearing surface can be in full intimate contact with a counterpart. The threaded fastener is provided with a head (10), and a screw shank (20) extending from the head (10). The screw shank (20) is provided with a parallel thread portion (22) having a complete screw thread formed therein, a neck portion (24) having no screw thread, a transition thread portion (26) having an incomplete screw thread formed to extend from the parallel thread portion (22) toward the neck portion (24) with its root diameter being the same as that of the complete screw thread and with its thread height gradually becoming lower to reach the neck portion, and an underneck rounded portion (28) formed in a corner angle portion between the neck portion (24) and a head bearing surface (11), wherein the neck portion (24) is work hardened with its diameter being narrowed from a root diameter of the parallel thread portion (22).Type: ApplicationFiled: July 8, 2014Publication date: June 16, 2016Inventors: Shigeto MORI, Hiroshi NAKANO, Yosuke OKAMURA, Seiya HOSHINO
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Patent number: 9181972Abstract: A novel loosening prevention threaded fastener in which a clearance side protrusion portion protruding radially outwardly toward a clearance flank surface of a female screw thread is formed on a clearance flank surface of a male screw thread, and the clearance side protrusion portion is constructed such that a tip end portion thereof interferes with the clearance flank surface of the female screw thread, in a state where a pressure flank surface of the male screw thread is in contact with a clearance flank surface of the female screw thread. At the time of screw fastening, the crest end portion of the clearance side protrusion portion is pushed to the pressure flank surface of the female screw thread so that it is deformed in a deflective manner to apply a predetermined contact pressure to a contact surface due to its elastic restoring force, thus providing resistance against a loosening direction.Type: GrantFiled: November 18, 2011Date of Patent: November 10, 2015Assignee: TOPURA CO., LTD.Inventors: Shigeto Mori, Yousuke Okamura, Shunji Tozawa
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Patent number: 8927064Abstract: Provided are a coating agent capable of forming, on the periphery of a tapping screw, a coating layer which can hold female-thread-forming chips generated during screwing of the tapping screw into a prepared hole of a workpiece, thereby preventing scattering of the female-thread-forming chips; and a tapping screw having thereon a coating layer formed from the coating agent. The coating agent is a composition containing, as primary components, calcium montanate or a calcium-montanate-containing montanic acid species mixture, a thermoplastic resin emulsion, and water. The coating agent can form, on the periphery of a tapping screw, a coating layer which exhibits a lubricating function, and a function of capturing female-thread-forming chips.Type: GrantFiled: October 4, 2007Date of Patent: January 6, 2015Assignee: Topura Co., Ltd.Inventors: Shigeto Mori, Yousuke Okamura, Mayumi Matsuno
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Publication number: 20130230364Abstract: A novel loosening prevention threaded fastener in which a clearance side protrusion portion protruding radially outwardly toward a clearance flank surface of a female screw thread is formed on a clearance flank surface of a male screw thread, and the clearance side protrusion portion is constructed such that a tip end portion thereof interferes with the clearance flank surface of the female screw thread, in a state where a pressure flank surface of the male screw thread is in contact with a clearance flank surface of the female screw thread. At the time of screw fastening, the crest end portion of the clearance side protrusion portion is pushed to the pressure flank surface of the female screw thread so that it is deformed in a deflective manner to apply a predetermined contact pressure to a contact surface due to its elastic restoring force, thus providing resistance against a loosening direction.Type: ApplicationFiled: November 18, 2011Publication date: September 5, 2013Inventors: Shigeto Mori, Yousuke Okamura, Shunji Tozawa
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Patent number: 7938609Abstract: The present invention provides a tightening structure with which a reduction in processing steps is achieved without modifying the shape of a partner member an improvements in bolt strength and fatigue strength are achieved, and with which the fitting length of a thread ridge is not altered greatly in comparison with a conventional tightening structure such that a size reduction can be achieved, thereby contributing greatly to a reduction in the weight of a vehicle.Type: GrantFiled: December 3, 2008Date of Patent: May 10, 2011Assignee: Kabushiki Kaisha TopuraInventors: Shigeto Mori, Akihide Umada, Mayumi Matsuno
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Publication number: 20100034615Abstract: Provided are a coating agent capable of forming, on the periphery of a tapping screw, a coating layer which can hold female-thread-forming chips generated during screwing of the tapping screw into a prepared hole of a workpiece, thereby preventing scattering of the female-thread-forming chips; and a tapping screw having thereon a coating layer formed from the coating agent. The coating agent is a composition containing, as primary components, calcium montanate or a calcium-montanate-containing montanic acid species mixture, a thermoplastic resin emulsion, and water. The coating agent can form, on the periphery of a tapping screw, a coating layer which exhibits a lubricating function, and a function of capturing female-thread-forming chips.Type: ApplicationFiled: October 4, 2007Publication date: February 11, 2010Applicant: TOPURA CO., LTD.Inventors: Shigeto Mori, Yousuke Okamura, Mayumi Matsuno
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Publication number: 20100008716Abstract: The present invention provides a tightening structure with which a reduction in processing steps is achieved without modifying the shape of a partner member an improvements in bolt strength and fatigue strength are achieved, and with which the fitting length of a thread ridge is not altered greatly in comparison with a conventional tightening structure such that a size reduction can be achieved, thereby contributing greatly to a reduction in the weight of a vehicle.Type: ApplicationFiled: December 3, 2008Publication date: January 14, 2010Inventors: Shigeto Mori, Akihide Umada, Mayumi Matsuno
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Patent number: 6183809Abstract: A surface-treating method of of screw parts, which method consists of coating beforehand a liquid organic resin based coating composition capable of forming a film having a volume resistivity of 1014 &OHgr;·cm or more at normal temperature onto a thread of screw parts to be mounted onto an automobile body by welding prior to a coating step of the automobile body, followed by heating and drying.Type: GrantFiled: February 25, 1997Date of Patent: February 6, 2001Assignees: Nissan Motor Co., Ltd., Topura Co., Ltd., Fuse Rashi, Co., Ltd., Kansai Paint Co., Ltd.Inventors: Hideyori Sakuragi, Kenshichiro Shima, Hajime Minagawa, Hikaru Furuta, Shigeto Mori, Shinji Nakano, Seiji Kashiwada
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Patent number: 5265118Abstract: A silicon carbide whisker production apparatus manufactured by placing a plurality of lidded reaction vessels in the longitudinal direction of an Acheson furnace at intervals, packing graphite grains in the gaps between the adjacent reaction vessels and around the reaction vessels along the longitudinal direction of the furnace starting with the furnace-side ends of terminal electrodes to form a surrounding heating zone, and packing a heat insulating packing around the surrounding heating zone.Type: GrantFiled: March 18, 1992Date of Patent: November 23, 1993Assignee: Tokai Carbon Co., Ltd.Inventors: Takashi Takenaka, Shigeto Mori, Osamu Machida
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Patent number: 4972184Abstract: A polling system for use in an audio system in which a plurality of controllers for controlling a plurality of input/output devices of the audio system and a system controller for controlling the status of the plurality of controllers are connected via a bus line. In an initial polling operation upon power-up of the system, the system controller in order confirms the connection of the plurality of controllers to the system and stores the results of confirmation. When the absence of connection of the controllers is confirmed in the initial polling operation, the system controller further monitors the level on a transmission line provided in the bus line for transmitting a requesting signal from the plurality of controllers to the system controller, and performs the polling operation once more if the presence of the requesting signal is confirmed.Type: GrantFiled: February 1, 1989Date of Patent: November 20, 1990Assignee: Pioneer Electronic CorporationInventors: Yasunao Go, Chiaki Hirano, Shigeto Mori, Masanori Kurosaki, Akira Hayama, Youichi Yamazaki, Toshiyuki Kimura, Yoshio Aoyagi
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Patent number: 4899138Abstract: In a touch panel control device for providing control signals to select an operation mode for an electronic device according to how the finger touches a touch panel, a timer starts its operation from the time instant when the finger touches the touch panel, and the direction and distance of movement of the finger in a predetermined period of time are detected, to control the operation of the electronic device or the like.Type: GrantFiled: February 29, 1988Date of Patent: February 6, 1990Assignee: Pioneer Electronic CorporationInventors: Morio Araki, Shigeto Mori, Michihiro Kaneko, Yasunao Go